✨ 完成实验部分后端

.gitignore

@@ -31,3 +31,5 @@ build/
 
 ### VS Code ###
 .vscode/
+/src/main/resources/application-dev.yml
+/src/main/resources/dev.application.properties

pom.xml

@@ -61,6 +61,38 @@
             <version>3.0.4</version>
             <scope>test</scope>
         </dependency>
+        <dependency>
+            <groupId>com.baomidou</groupId>
+            <artifactId>mybatis-plus-spring-boot3-starter</artifactId>
+            <version>3.5.11</version>
+        </dependency>
+        <dependency>
+            <groupId>io.jsonwebtoken</groupId>
+            <artifactId>jjwt-api</artifactId>
+            <version>0.11.5</version>
+        </dependency>
+        <dependency>
+            <groupId>io.jsonwebtoken</groupId>
+            <artifactId>jjwt-impl</artifactId>
+            <version>0.11.5</version>
+            <scope>runtime</scope>
+        </dependency>
+        <dependency>
+            <groupId>io.jsonwebtoken</groupId>
+            <artifactId>jjwt-jackson</artifactId>
+            <version>0.11.5</version>
+            <scope>runtime</scope>
+        </dependency>
+        <dependency>
+            <groupId>com.qcloud</groupId>
+            <artifactId>cos_api</artifactId>
+            <version>5.6.227</version>
+        </dependency>
+        <dependency>
+            <groupId>com.sun.mail</groupId>
+            <artifactId>jakarta.mail</artifactId>
+            <version>2.0.1</version>
+        </dependency>
     </dependencies>
 
     <build>

src/main/java/top/lichx/webclassbackend/config/MailProperties.java

@@ -0,0 +1,64 @@
+package top.lichx.webclassbackend.config;
+
+import org.springframework.boot.context.properties.ConfigurationProperties;
+import org.springframework.stereotype.Component;
+
+@Component
+@ConfigurationProperties(prefix = "mail.smtp")
+public class MailProperties {
+    private String host;
+    private int port;
+    private String username;
+    private String password;
+    private boolean auth;
+    private boolean starttls;
+
+    // Getters and Setters
+    public String getHost() {
+        return host;
+    }
+
+    public void setHost(String host) {
+        this.host = host;
+    }
+
+    public int getPort() {
+        return port;
+    }
+
+    public void setPort(int port) {
+        this.port = port;
+    }
+
+    public String getUsername() {
+        return username;
+    }
+
+    public void setUsername(String username) {
+        this.username = username;
+    }
+
+    public String getPassword() {
+        return password;
+    }
+
+    public void setPassword(String password) {
+        this.password = password;
+    }
+
+    public boolean isAuth() {
+        return auth;
+    }
+
+    public void setAuth(boolean auth) {
+        this.auth = auth;
+    }
+
+    public boolean isStarttls() {
+        return starttls;
+    }
+
+    public void setStarttls(boolean starttls) {
+        this.starttls = starttls;
+    }
+}

src/main/java/top/lichx/webclassbackend/config/WebConfig.java

@@ -0,0 +1,25 @@
+package top.lichx.webclassbackend.config;
+
+import jakarta.annotation.Resource;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
+import top.lichx.webclassbackend.interceptor.JwtInterceptor;
+
+@Configuration
+@Slf4j
+public class WebConfig implements WebMvcConfigurer {
+    @Resource
+    private JwtInterceptor jwtInterceptor;
+
+    @Override
+    public void addInterceptors(InterceptorRegistry registry) {
+        log.info("addInterceptors");
+        registry.addInterceptor(jwtInterceptor)
+                .addPathPatterns("/**") // 拦截所有路径
+                .excludePathPatterns("/login/**") // 放行登录接口
+                .excludePathPatterns("/file/uploadAvatar") // 放行头像上传接口
+                .excludePathPatterns("/error/**"); // 放行错误处理接口
+    }
+}

src/main/java/top/lichx/webclassbackend/controller/FileController.java

@@ -0,0 +1,68 @@
+package top.lichx.webclassbackend.controller;
+
+import jakarta.annotation.Resource;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.*;
+import org.springframework.web.multipart.MultipartFile;
+import top.lichx.webclassbackend.pojo.vo.AvatarInfo;
+import top.lichx.webclassbackend.result.Result;
+import top.lichx.webclassbackend.util.COSIO;
+
+import java.io.File;
+import java.io.IOException;
+import java.net.URL;
+
+@RestController
+@RequestMapping("/file")
+public class FileController {
+
+    @Resource
+    private COSIO cosio;
+
+    @GetMapping("/test")
+    public String test() {
+        // 使用注入的 COSIO 实例
+        System.out.println("COSIO: " + cosio);
+        return "test";
+    }
+
+//    @PostMapping("/upload")
+//    public Result<?> uploadFile(@RequestParam("file") MultipartFile multipartFile) {
+//        try {
+//            // 将 MultipartFile 转换为 File
+//            var file = File.createTempFile("upload-", multipartFile.getOriginalFilename());
+//            multipartFile.transferTo(file);
+//
+//            // 调用 COSIO 的上传方法
+//            String filename = cosio.UploadFile(file);
+//
+//            // 删除临时文件
+//            file.delete();
+//
+//            return Result.success("文件上传成功，文件路径：", filename);
+//        } catch (IOException e) {
+//            e.printStackTrace();
+//            // 处理文件上传失败的情况
+//            return Result.error("文件上传失败：" + e.getMessage());
+//        }
+//    }
+
+
+    @PostMapping("/uploadAvatar")
+    public Result<?> uploadAvatar(@RequestParam("file") MultipartFile multipartFile) throws IOException {
+        var file = File.createTempFile("upload-", multipartFile.getOriginalFilename());
+        multipartFile.transferTo(file);
+        var fileName = cosio.UploadFile(file);
+        file.delete();
+        var fileURL = cosio.GetFileLink(fileName);
+        var avatarInfo = new AvatarInfo(fileName, fileURL);
+        return Result.success("文件上传成功", avatarInfo);
+    }
+
+    @GetMapping("/getFileLink")
+    public Result<?> getFileLink(@RequestParam String fileName) {
+        URL url = cosio.GetFileLink(fileName);
+        return Result.success("获取文件链接成功", url.toString());
+    }
+
+}

src/main/java/top/lichx/webclassbackend/controller/Login.java

@@ -0,0 +1,287 @@
+package top.lichx.webclassbackend.controller;
+
+import jakarta.annotation.Resource;
+import jakarta.mail.MessagingException;
+import jakarta.servlet.http.HttpServletResponse;
+import org.springframework.web.bind.annotation.*;
+import top.lichx.webclassbackend.pojo.dto.LoginDTO;
+import top.lichx.webclassbackend.pojo.dto.PasswordResetDTO;
+import top.lichx.webclassbackend.pojo.dto.RegisterDTO;
+import top.lichx.webclassbackend.pojo.entity.User;
+import top.lichx.webclassbackend.result.Result;
+import top.lichx.webclassbackend.service.IdentifyingCode;
+import top.lichx.webclassbackend.service.UserService;
+import top.lichx.webclassbackend.util.JwtUtil;
+import top.lichx.webclassbackend.util.MailUtil;
+import top.lichx.webclassbackend.util.PasswordUtil;
+
+import java.time.LocalDate;
+import java.time.format.DateTimeFormatter;
+
+@RestController
+@RequestMapping("/login")
+public class Login {
+
+    private String mailTemplate = """
+            <body>
+                <table width="100%" border="0" cellspacing="0" cellpadding="0">
+                    <tbody>
+                        <tr>
+                            <td class="p-80 mpy-35 mpx-15" bgcolor="#FFFFFF" style="padding: 80px;">
+                                <table width="100%" border="0" cellspacing="0" cellpadding="0">
+                                    <tbody>
+                                        <tr>
+                                            <td>
+                                                <table width="100%" border="0" cellspacing="0" cellpadding="0">
+                                                    <tbody>
+                                                        <tr>
+                                                            <td
+                                                                style="font-size:20px; line-height:42px; font-family:Arial, sans-serif, 'Motiva Sans'; text-align:left; padding-bottom: 30px; color:#002333; font-weight:bold;">
+                                                                <span style="color: #007aff;">您好</span>
+                                                            </td>
+                                                        </tr>
+                                                    </tbody>
+                                                </table>
+                                                <table width="100%" border="0" cellspacing="0" cellpadding="0">
+                                                    <tbody>
+                                                        <tr>
+                                                            <td class="text-18 c-grey4 pb-30"
+                                                                style="font-size:18px; line-height:25px; font-family:Arial, sans-serif, 'Motiva Sans'; text-align:left; color:#002333; padding-bottom: 30px;">
+                                                                {tip}，有效时间为 {ExpireTime} 分钟。
+                                                            </td>
+                                                        </tr>
+                                                    </tbody>
+                                                </table>
+                                                <table width="100%" border="0" cellspacing="0" cellpadding="0">
+                                                    <tbody>
+                                                        <tr>
+                                                            <td class="pb-70 mpb-50" style="padding-bottom: 70px;">
+                                                                <table width="100%" border="0" cellspacing="0" cellpadding="0"
+                                                                       bgcolor="#eaebff">
+                                                                    <tbody>
+                                                                        <tr>
+                                                                            <td class="py-30 px-56"
+                                                                                style="padding-top: 30px; padding-bottom: 30px; padding-left: 56px; padding-right: 56px;">
+                                                                                <table width="100%" border="0" cellspacing="0"
+                                                                                       cellpadding="0">
+                                                                                    <tbody>
+                                                                                        <tr>
+                                                                                            <td style="font-size:18px; line-height:25px; font-family:Arial, sans-serif, 'Motiva Sans'; color:#8f98a0; text-align:center;">
+                                                                                                验证码
+                                                                                            </td>
+                                                                                        </tr>
+                                                                                        <tr>
+                                                                                            <td style="padding-bottom: 16px"></td>
+                                                                                        </tr>
+                                                                                        <tr>
+                                                                                            <td class="title-48 c-blue1 fw-b a-center"
+                                                                                                style="font-size:48px; line-height:52px; font-family:Arial, sans-serif, 'Motiva Sans'; color:#007aff; font-weight:bold; text-align:center;">
+                                                                                                {Captcha}
+                                                                                            </td>
+                                                                                        </tr>
+                                                                                    </tbody>
+                                                                                </table>
+                                                                            </td>
+                                                                        </tr>
+                                                                    </tbody>
+                                                                </table>
+                                                            </td>
+                                                        </tr>
+                                                    </tbody>
+                                                </table>
+                                                <table width="100%" border="0" cellspacing="0" cellpadding="0">
+                                                </table>
+                                                <table width="100%" border="0" cellspacing="0" cellpadding="0">
+                                                    <tbody>
+                                                        <tr>
+                                                            <td class="title-36 pb-30 c-grey6 fw-b"
+                                                                style="font-size:30px; line-height:34px; font-family:Arial, sans-serif, 'Motiva Sans'; text-align:left; padding-bottom: 20px; color:#002333; font-weight:bold;">
+                                                                不是您？
+                                                            </td>
+                                                        </tr>
+                                                    </tbody>
+                                                </table>
+                                                <table width="100%" border="0" cellspacing="0" cellpadding="0">
+                                                    <tbody>
+                                                        <tr>
+                                                            <td class="text-18 c-grey4 pb-30"
+                                                                style="font-size:18px; line-height:25px; font-family:Arial, sans-serif, 'Motiva Sans'; text-align:left; color:#002333; padding-bottom: 30px;">
+                                                               \s
+                                                                如果这不是来自您的验证请求，请您忽略本邮件并<span style="color: #002333; font-weight: bold;">不要将验证码转发给任何人</span>。<br><br>
+                                                                此电子邮件包含一个代码，您需要用它验证您的帐户。切勿与任何人分享此代码。
+                                                            </td>
+                                                        </tr>
+                                                    </tbody>
+                                                </table>
+                                                <table width="100%" border="0" cellspacing="0" cellpadding="0">
+                                                    <tbody>
+                                                        <tr>
+                                                            <td class="pt-30" style="padding-top: 30px;">
+                                                                <table width="100%" border="0" cellspacing="0" cellpadding="0">
+                                                                    <tbody>
+                                                                        <tr>
+                                                                            <td class="img" width="3" bgcolor="#007aff"
+                                                                                style="font-size:0pt; line-height:0pt; text-align:left;">
+                                                                            </td>
+                                                                            <td class="img" width="37"
+                                                                                style="font-size:0pt; line-height:0pt; text-align:left;">
+                                                                            </td>
+                                                                            <td>
+                                                                                <table width="100%" border="0" cellspacing="0"
+                                                                                       cellpadding="0">
+                                                                                    <tbody>
+                                                                                        <tr>
+                                                                                            <td class="text-16 py-20 c-grey4 fallback-font"
+                                                                                                style="font-size:16px; line-height:22px; font-family:Arial, sans-serif, 'Motiva Sans'; text-align:left; padding-top: 20px; padding-bottom: 20px; color:#002333;">
+                                                                                                祝您愉快，<br>
+                                                                                                Lichx
+                                                                                            </td>
+                                                                                        </tr>
+                                                                                    </tbody>
+                                                                                </table>
+                                                                            </td>
+                                                                        </tr>
+                                                                    </tbody>
+                                                                </table>
+                                                            </td>
+                                                        </tr>
+                                                    </tbody>
+                                                </table>
+                                            </td>
+                                        </tr>
+                                    </tbody>
+                                </table>
+                            </td>
+                        </tr>
+                        <tr>
+                        </tr>
+                    </tbody>
+                </table>
+            </body>
+            """;
+//    @Resource
+//    private Test test;
+
+    @Resource
+    private MailUtil mailUtil;
+
+    @Resource
+    private IdentifyingCode identifyingCode;
+
+    @Resource
+    private UserService userService;
+
+    @Resource
+    private PasswordUtil passwordUtil;
+
+//    @GetMapping("/test")
+//    public String test() {
+//        test.test();
+//        return "test";
+//    }
+//
+//    @PostMapping("/test/{id}")
+//    public String testPost(@PathVariable Integer id) {
+//        test.test();
+//        return "testPost";
+//    }
+
+    @PostMapping("/")
+    public Result<?> login(@RequestBody LoginDTO loginInfo, HttpServletResponse response) {
+        // 验证用户名和密码（此处省略具体逻辑）
+        String usernameOrEmail = loginInfo.getUsernameOrEmail();
+        String password = loginInfo.getPassword();
+        var user = usernameOrEmail.contains("@")?userService.getUserByEmail(usernameOrEmail) : userService.getUserByUserName(usernameOrEmail);
+        if (user != null && passwordUtil.matches(password,user.getPassword())) {
+            String token = JwtUtil.generateToken(user.getName());
+            // 设置HttpOnly和Secure属性的Cookie
+            response.setHeader("Set-Cookie", "Authorization=Bearer " + token + "; HttpOnly; Max-Age=86400; Path=/; SameSite=Strict");
+//            response.setHeader("Set-Cookie", "token=Bearer " + token + "; HttpOnly; Secure; Path=/; SameSite=Strict");
+            return Result.success("登录成功");
+        }
+        return Result.error("用户名或密码错误");
+    }
+
+    @GetMapping("/logout")
+    public Result<?> logout(HttpServletResponse response) {
+        // 清除Cookie
+        response.setHeader("Set-Cookie", "Authorization=; HttpOnly; Max-Age=0; Path=/; SameSite=Strict");
+        return Result.success("注销成功");
+    }
+
+    @GetMapping("/register/identifyingCode")
+    public Result<?> registerIdentifyingCode(String email) throws MessagingException {
+        var captcha = identifyingCode.getIdentifyingCode(email, IdentifyingCode.IdentifyingCodeType.REGISTER, 15 * 60);
+        if (captcha == null) {
+            return Result.error("验证码请求过于频繁，请稍后再试");
+        }
+        String mailTemplate = this.mailTemplate;
+        String tip = "您正在进行注册操作，这是您验证帐户所需的令牌验证码";
+        String expireTime = "15";
+        mailTemplate = mailTemplate.replace("{tip}", tip);
+        mailTemplate = mailTemplate.replace("{Captcha}", captcha);
+        mailTemplate = mailTemplate.replace("{ExpireTime}", expireTime);
+        mailUtil.sendHtmlEmail(
+                email,
+                "Lichx's WebClass",
+                mailTemplate);
+        return Result.success("验证码已发送到您的邮箱，请注意查收");
+    }
+
+    @PostMapping("/register")
+    public Result<?> register(@RequestBody RegisterDTO registerDTO) {
+        var user = new User();
+        user.setId(userService.getUserLastId());
+        user.setName(registerDTO.getUsername());
+        user.setPassword(passwordUtil.encrypt(registerDTO.getPassword()));
+        user.setEmail(registerDTO.getEmail());
+        user.setBirth(LocalDate.parse(registerDTO.getBirth(), DateTimeFormatter.ISO_LOCAL_DATE).atStartOfDay());
+        user.setAvatarURL(registerDTO.getAvatarFile());
+
+        if (!identifyingCode.testIdentifyingCode(registerDTO.getEmail(),
+                IdentifyingCode.IdentifyingCodeType.REGISTER,
+                registerDTO.getIdentifyingCode())) {
+            return Result.error("验证码错误或已过期");
+        }
+        if (userService.getUserByUserName(user.getName()) != null) {
+            return Result.error("用户名已存在");
+        }
+        userService.insertUser(user);
+        return Result.success("用户已注册");
+    }
+
+    @GetMapping("/passwordReset/identifyingCode")
+    public Result<?> resetIdentifyingCode(String usernameOrEmail) throws MessagingException {
+        var email = usernameOrEmail.contains("@") ? usernameOrEmail : userService.getUserByUserName(usernameOrEmail).getEmail();
+        var captcha = identifyingCode.getIdentifyingCode(email, IdentifyingCode.IdentifyingCodeType.PASSWORD_RESET, 15 * 60);
+        if (captcha == null) {
+            return Result.error("验证码请求过于频繁，请稍后再试");
+        }
+        String mailTemplate = this.mailTemplate;
+        String tip = "您正在进行密码重置操作，这是您验证帐户所需的令牌验证码";
+        String expireTime = "15";
+        mailTemplate = mailTemplate.replace("{tip}", tip);
+        mailTemplate = mailTemplate.replace("{Captcha}", captcha);
+        mailTemplate = mailTemplate.replace("{ExpireTime}", expireTime);
+        mailUtil.sendHtmlEmail(
+                email,
+                "Lichx's WebClass",
+                mailTemplate);
+        return Result.success("验证码已发送到您的邮箱，请注意查收");
+    }
+
+    @PostMapping("/passwordReset")
+    public Result<?> passwordReset(@RequestBody PasswordResetDTO passwordResetDTO) {
+        System.out.println();
+        String usernameOrEmail = passwordResetDTO.getUsernameOrEmail();
+        String password = passwordResetDTO.getPassword();
+        var user = usernameOrEmail.contains("@")?userService.getUserByEmail(usernameOrEmail) : userService.getUserByUserName(usernameOrEmail);
+        if (!identifyingCode.testIdentifyingCode(user.getEmail(),
+                IdentifyingCode.IdentifyingCodeType.PASSWORD_RESET,
+                passwordResetDTO.getIdentifyingCode())) {
+            return Result.error("验证码错误或已过期");
+        }
+        userService.changeUserPasswordByUserName(user.getName(), passwordUtil.encrypt(password));
+        return Result.success("密码已重置");
+    }
+}

src/main/java/top/lichx/webclassbackend/controller/User.java

@@ -0,0 +1,71 @@
+package top.lichx.webclassbackend.controller;
+
+import jakarta.annotation.Resource;
+import jakarta.servlet.http.HttpServletRequest;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+import top.lichx.webclassbackend.pojo.vo.VisibleUserInfoVO;
+import top.lichx.webclassbackend.result.Result;
+import top.lichx.webclassbackend.service.UserService;
+import top.lichx.webclassbackend.util.COSIO;
+import top.lichx.webclassbackend.util.JwtUtil;
+
+@RestController
+@RequestMapping("/user")
+public class User {
+    @Resource
+    private UserService userService;
+
+    @Resource
+    private COSIO cosio;
+
+    @GetMapping("/info")
+    public Result<?> getUserInfo(HttpServletRequest request) {
+
+        String cookieHeader = request.getHeader("Cookie");
+        String token = null;
+        if (cookieHeader != null) {
+            String[] cookies = cookieHeader.split("; ");
+            for (String cookie : cookies) {
+                if (cookie.startsWith("Authorization=")) {
+                    token = cookie.substring("Authorization=".length());
+                    break;
+                }
+            }
+        }
+        token = token.substring(7); // 去掉 "Bearer " 前缀
+        String username = JwtUtil.parseToken(token);
+
+        var user = userService.getUserByUserName(username);
+        if (user == null)
+            return Result.error("用户不存在");
+        var returnVO = new VisibleUserInfoVO();
+        returnVO.setUserId("" + user.getId());
+        returnVO.setUserName(user.getName());
+        returnVO.setUserEmail(user.getEmail());
+        returnVO.setUserAvatar(cosio.GetFileLink(user.getAvatarURL()));
+        return Result.success("", returnVO);
+    }
+
+    @GetMapping("/avatar")
+    public Result<?> getUserAvatar(HttpServletRequest request) {
+        String cookieHeader = request.getHeader("Cookie");
+        String token = null;
+        if (cookieHeader != null) {
+            String[] cookies = cookieHeader.split("; ");
+            for (String cookie : cookies) {
+                if (cookie.startsWith("Authorization=")) {
+                    token = cookie.substring("Authorization=".length());
+                    break;
+                }
+            }
+        }
+        token = token.substring(7); // 去掉 "Bearer " 前缀
+        String username = JwtUtil.parseToken(token);
+        var user = userService.getUserByUserName(username);
+        if (user == null)
+            return Result.error("用户不存在");
+        return Result.success("", cosio.GetFileLink(user.getAvatarURL()));
+    }
+}

src/main/java/top/lichx/webclassbackend/controller/UserManager.java

@@ -0,0 +1,67 @@
+package top.lichx.webclassbackend.controller;
+
+import com.baomidou.mybatisplus.core.metadata.IPage;
+import jakarta.annotation.Resource;
+import org.springframework.web.bind.annotation.*;
+import top.lichx.webclassbackend.pojo.dto.UserManagerDTO;
+import top.lichx.webclassbackend.pojo.entity.UserManagerInfo;
+import top.lichx.webclassbackend.result.Result;
+import top.lichx.webclassbackend.service.UserManagerService;
+
+import java.time.LocalDate;
+import java.time.format.DateTimeFormatter;
+
+@RestController
+@RequestMapping("/userManager")
+public class UserManager {
+    @Resource
+    private UserManagerService userManagerService;
+
+    @PostMapping("/addUser")
+    public Result<?> addUser(@RequestBody UserManagerDTO userManagerDTO)
+    {
+        var info = new UserManagerInfo();
+        info.setId(userManagerService.getUserManagerInfoLastId());
+        info.setName(userManagerDTO.getName());
+        info.setDate(LocalDate.parse(userManagerDTO.getDate(), DateTimeFormatter.ISO_LOCAL_DATE));
+        info.setProvince(userManagerDTO.getProvince());
+        info.setCity(userManagerDTO.getCity());
+        info.setAddress(userManagerDTO.getAddress());
+        info.setZip(userManagerDTO.getZip());
+        userManagerService.insertUserManagerInfo(info);
+        return Result.success("添加用户成功");
+    }
+
+    @GetMapping("/page")
+    public Result<IPage<UserManagerInfo>> getUserManagerInfoPage(@RequestParam int page, @RequestParam int size, @RequestParam String situation) {
+        return Result.success("",userManagerService.getUserManagerInfoPage(page, size, situation));
+    }
+
+    @PostMapping("/updateUser")
+    public Result<?>updateUser(@RequestBody UserManagerDTO userManagerDTO)
+    {
+        var info = new UserManagerInfo();
+        info.setId(userManagerDTO.getId());
+        info.setName(userManagerDTO.getName());
+        info.setDate(LocalDate.parse(userManagerDTO.getDate(), DateTimeFormatter.ISO_LOCAL_DATE));
+        info.setProvince(userManagerDTO.getProvince());
+        info.setCity(userManagerDTO.getCity());
+        info.setAddress(userManagerDTO.getAddress());
+        info.setZip(userManagerDTO.getZip());
+        userManagerService.updateUserManagerInfo(info);
+        return Result.success("更新用户成功");
+    }
+
+    @GetMapping("deleteUser")
+    public Result<?> deleteUser(@RequestParam Integer id)
+    {
+        userManagerService.deleteUserManagerInfo(id);
+        return Result.success("删除用户成功");
+    }
+
+    @GetMapping("total")
+    public Result<Integer> total(@RequestParam String situation)
+    {
+        return Result.success("", userManagerService.getTotal(situation));
+    }
+}

src/main/java/top/lichx/webclassbackend/exception/GlobalExceptionHandler.java

@@ -0,0 +1,24 @@
+package top.lichx.webclassbackend.exception;
+
+import org.springframework.web.bind.annotation.ExceptionHandler;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestControllerAdvice;
+import top.lichx.webclassbackend.result.Result;
+
+@RestControllerAdvice
+public class GlobalExceptionHandler {
+
+//    // 处理空指针异常
+//    @ExceptionHandler(NullPointerException.class)
+//    public Result<?> handleNullPointerException(NullPointerException ex) {
+//        ex.printStackTrace();
+//        return Result.error("空指针异常，请检查代码！");
+//    }
+
+    // 处理其他异常
+    @ExceptionHandler(Exception.class)
+    public Result<?> handleException(Exception ex) {
+        ex.printStackTrace();
+        return Result.error("服务器内部错误：" + ex.getMessage());
+    }
+}

src/main/java/top/lichx/webclassbackend/interceptor/JwtInterceptor.java

@@ -0,0 +1,43 @@
+package top.lichx.webclassbackend.interceptor;
+
+import jakarta.servlet.http.Cookie;
+import jakarta.servlet.http.HttpServletRequest;
+import jakarta.servlet.http.HttpServletResponse;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.stereotype.Component;
+import org.springframework.web.servlet.HandlerInterceptor;
+import top.lichx.webclassbackend.util.JwtUtil;
+
+@Component
+@Slf4j
+public class JwtInterceptor implements HandlerInterceptor {
+    @Override
+    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
+        String cookieHeader = request.getHeader("Cookie");
+        String token = null;
+        if (cookieHeader != null) {
+            String[] cookies = cookieHeader.split("; ");
+            for (String cookie : cookies) {
+                if (cookie.startsWith("Authorization=")) {
+                    token = cookie.substring("Authorization=".length());
+                    break;
+                }
+            }
+        }
+        log.info("token:{}, URI:{}", token, request.getRequestURI());
+        if (token == null || !token.startsWith("Bearer ")) {
+            response.setStatus(HttpServletResponse.SC_UNAUTHORIZED);
+            return false;
+        }
+        token = token.substring(7); // 去掉 "Bearer " 前缀
+        String username = JwtUtil.parseToken(token);
+        if (username == null) {
+            response.setStatus(HttpServletResponse.SC_UNAUTHORIZED);
+            log.error("Token解析失败");
+            return false;
+        }
+        request.setAttribute("username", username);
+        log.info("用户 {} 访问了 {}", username, request.getRequestURI());
+        return true;
+    }
+}

src/main/java/top/lichx/webclassbackend/mapper/userManagerInfoMapper.java

@@ -0,0 +1,7 @@
+package top.lichx.webclassbackend.mapper;
+
+import com.baomidou.mybatisplus.core.mapper.BaseMapper;
+import org.apache.ibatis.annotations.Mapper;
+import top.lichx.webclassbackend.pojo.entity.UserManagerInfo;
+@Mapper
+public interface userManagerInfoMapper extends BaseMapper<UserManagerInfo> { }

src/main/java/top/lichx/webclassbackend/mapper/userMapper.java

@@ -0,0 +1,9 @@
+package top.lichx.webclassbackend.mapper;
+
+import com.baomidou.mybatisplus.core.mapper.BaseMapper;
+import org.apache.ibatis.annotations.Mapper;
+import top.lichx.webclassbackend.pojo.entity.User;
+
+@Mapper
+public interface userMapper extends BaseMapper<User> { }
+

src/main/java/top/lichx/webclassbackend/pojo/dto/In.java

@@ -0,0 +1,9 @@
+package top.lichx.webclassbackend.pojo.dto;
+
+import lombok.Data;
+
+@Data
+public class In {
+    Long id;
+    String test;
+}

src/main/java/top/lichx/webclassbackend/pojo/dto/LoginDTO.java

@@ -0,0 +1,10 @@
+package top.lichx.webclassbackend.pojo.dto;
+
+import lombok.Data;
+
+@Data
+public class LoginDTO {
+
+    private String usernameOrEmail;
+    private String password;
+}

src/main/java/top/lichx/webclassbackend/pojo/dto/PasswordResetDTO.java

@@ -0,0 +1,10 @@
+package top.lichx.webclassbackend.pojo.dto;
+
+import lombok.Data;
+
+@Data
+public class PasswordResetDTO {
+    private String usernameOrEmail;
+    private String identifyingCode;
+    private String password;
+}

src/main/java/top/lichx/webclassbackend/pojo/dto/RegisterCodeDTO.java

@@ -0,0 +1,8 @@
+package top.lichx.webclassbackend.pojo.dto;
+
+import lombok.Data;
+
+@Data
+public class RegisterCodeDTO {
+    private String email;
+}

src/main/java/top/lichx/webclassbackend/pojo/dto/RegisterDTO.java

@@ -0,0 +1,13 @@
+package top.lichx.webclassbackend.pojo.dto;
+
+import lombok.Data;
+
+@Data
+public class RegisterDTO {
+    private String username;
+    private String password;
+    private String email;
+    private String identifyingCode;
+    private String birth;
+    private String avatarFile;
+}

src/main/java/top/lichx/webclassbackend/pojo/dto/UserManagerDTO.java

@@ -0,0 +1,16 @@
+package top.lichx.webclassbackend.pojo.dto;
+
+import lombok.Data;
+
+import java.time.LocalDate;
+
+@Data
+public class UserManagerDTO {
+    private Integer id;
+    private String name;
+    private String date;
+    private String province;
+    private String city;
+    private String address;
+    private String zip;
+}

src/main/java/top/lichx/webclassbackend/pojo/entity/User.java

@@ -0,0 +1,23 @@
+package top.lichx.webclassbackend.pojo.entity;
+
+import com.baomidou.mybatisplus.annotation.TableField;
+import com.baomidou.mybatisplus.annotation.TableName;
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+import java.time.LocalDateTime;
+
+@Data
+@NoArgsConstructor
+@AllArgsConstructor
+@TableName("userT")
+public class User {
+    Integer id;
+    String name;
+    String password;
+    String email;
+    LocalDateTime birth;
+    @TableField("avatarURL")
+    String avatarURL;
+}

src/main/java/top/lichx/webclassbackend/pojo/entity/UserManagerInfo.java

@@ -0,0 +1,22 @@
+package top.lichx.webclassbackend.pojo.entity;
+
+import com.baomidou.mybatisplus.annotation.TableName;
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+import java.time.LocalDate;
+
+@Data
+@NoArgsConstructor
+@AllArgsConstructor
+@TableName("User")
+public class UserManagerInfo {
+    Integer id;
+    String name;
+    LocalDate date;
+    String province;
+    String city;
+    String address;
+    String zip;
+}

src/main/java/top/lichx/webclassbackend/pojo/vo/AvatarInfo.java

@@ -0,0 +1,14 @@
+package top.lichx.webclassbackend.pojo.vo;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+import java.net.URL;
+
+@Data
+@AllArgsConstructor
+@NoArgsConstructor
+public class AvatarInfo {
+    private String avatarFilePath;
+    private URL avatarFileURL;
+}

src/main/java/top/lichx/webclassbackend/pojo/vo/VisibleUserInfoVO.java

@@ -0,0 +1,17 @@
+package top.lichx.webclassbackend.pojo.vo;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+import java.net.URL;
+
+@Data
+@AllArgsConstructor
+@NoArgsConstructor
+public class VisibleUserInfoVO {
+    private String userId;
+    private String userName;
+    private String userEmail;
+    private URL userAvatar;
+}

src/main/java/top/lichx/webclassbackend/result/Result.java

@@ -0,0 +1,50 @@
+package top.lichx.webclassbackend.result;
+
+import lombok.Data;
+
+import java.io.Serializable;
+
+@Data
+public class Result<T> implements Serializable {
+    private Integer code;
+    private String message;
+    private T data;
+
+    public static <T> Result<T> success() {
+        Result<T> result = new Result<>();
+        result.setCode(200);
+        result.setMessage("success");
+        result.data = null;
+        return result;
+    }
+
+    public static <T> Result<T> success(String msg) {
+        Result<T> result = new Result<>();
+        result.setCode(200);
+        result.setMessage(msg);
+        result.data = null;
+        return result;
+    }
+
+    public static <T> Result<T> success(String msg, T data) {
+        Result<T> result = new Result<>();
+        result.setCode(200);
+        result.setMessage(msg);
+        result.setData(data);
+        return result;
+    }
+
+    public static Result<Object> error() {
+        Result<Object> result = new Result<>();
+        result.setCode(500);
+        result.setMessage("error");
+        return result;
+    }
+
+    public static Result<Object> error(String msg) {
+        Result<Object> result = new Result<>();
+        result.setCode(500);
+        result.setMessage(msg);
+        return result;
+    }
+}

src/main/java/top/lichx/webclassbackend/service/IdentifyingCode.java

@@ -0,0 +1,13 @@
+package top.lichx.webclassbackend.service;
+
+import jakarta.mail.MessagingException;
+
+public interface IdentifyingCode {
+    String getIdentifyingCode(String email, IdentifyingCodeType type, long expireTimeInSeconds);
+    boolean testIdentifyingCode(String email, IdentifyingCodeType type, String code );
+    enum IdentifyingCodeType {
+        REGISTER,
+        PASSWORD_RESET
+    }
+
+}

src/main/java/top/lichx/webclassbackend/service/Test.java

@@ -0,0 +1,5 @@
+package top.lichx.webclassbackend.service;
+
+public interface Test {
+    void test();
+}

src/main/java/top/lichx/webclassbackend/service/UserManagerService.java

@@ -0,0 +1,14 @@
+package top.lichx.webclassbackend.service;
+
+import com.baomidou.mybatisplus.core.metadata.IPage;
+import top.lichx.webclassbackend.pojo.entity.UserManagerInfo;
+
+public interface UserManagerService {
+    public void insertUserManagerInfo(UserManagerInfo userManagerInfo);
+    public void updateUserManagerInfo(UserManagerInfo userManagerInfo);
+    public void deleteUserManagerInfo(Integer id);
+    public IPage<UserManagerInfo> getUserManagerInfoPage(int page, int size, String situation);
+    public Integer getUserManagerInfoLastId();
+    public Integer getTotal(String situation);
+
+}

src/main/java/top/lichx/webclassbackend/service/UserService.java

@@ -0,0 +1,13 @@
+package top.lichx.webclassbackend.service;
+
+import top.lichx.webclassbackend.pojo.entity.User;
+
+public interface UserService {
+    public void insertUser(User user);
+    public User getUserByUserName(String userName);
+    public void changeUserPasswordByUserName(String userName, String password);
+
+    public User getUserByEmail(String email);
+    public Integer getUserLastId();
+    public Integer getTotal();
+}

src/main/java/top/lichx/webclassbackend/service/impl/IdentifyingCodeImpl.java

@@ -0,0 +1,88 @@
+package top.lichx.webclassbackend.service.impl;
+
+import jakarta.mail.MessagingException;
+import lombok.NoArgsConstructor;
+import org.springframework.stereotype.Service;
+import top.lichx.webclassbackend.service.IdentifyingCode;
+
+import java.util.Dictionary;
+import java.util.Hashtable;
+import java.util.Random;
+
+@Service
+public class IdentifyingCodeImpl implements IdentifyingCode {
+
+    Dictionary<String, IdentifyingCodeStructure> data = new Hashtable<>();
+
+    @Override
+    public String getIdentifyingCode(String email, IdentifyingCodeType type, long expireTimeInSeconds) {
+        dataClear();
+        var structure = data.get(IdentifyingCodeStructure.getId(email, type));
+        if (structure != null && System.currentTimeMillis() / 1000 < structure.startTimeInSeconds + 60)
+            return null;
+        structure = IdentifyingCodeStructure.createIdentifyingCodeStructure(email, type, expireTimeInSeconds);
+        data.put(structure.id, structure);
+        return structure.code;
+    }
+
+    @Override
+    public boolean testIdentifyingCode(String email, IdentifyingCodeType type, String code) {
+        dataClear();
+        var structure = data.get(IdentifyingCodeStructure.getId(email, type));
+        if (structure == null) {
+            return false;
+        }
+        if (structure.isExpired()) {
+            data.remove(structure.id);
+            return false;
+        }
+        if (structure.code.equals(code)) {
+            data.remove(structure.id);
+            return true;
+        }
+        return false;
+    }
+
+    private void dataClear() {
+        var keys = data.keys();
+        while (keys.hasMoreElements()) {
+            var key = keys.nextElement();
+            var structure = data.get(key);
+            if (structure.isExpired()) {
+                data.remove(key);
+            }
+        }
+    }
+}
+
+@NoArgsConstructor
+class IdentifyingCodeStructure {
+    public String id;
+    public String username;
+    public IdentifyingCode.IdentifyingCodeType type;
+    public String code;
+    public long startTimeInSeconds;
+    public long expireTimeInSeconds;
+
+    boolean isExpired() {
+        long currentTimeInSeconds = System.currentTimeMillis() / 1000;
+        return currentTimeInSeconds > startTimeInSeconds + expireTimeInSeconds;
+    }
+
+    static String getId(String username, IdentifyingCode.IdentifyingCodeType type) {
+        return username + type;
+    }
+
+    static IdentifyingCodeStructure createIdentifyingCodeStructure(String email, IdentifyingCode.IdentifyingCodeType type, long expireTimeInSeconds) {
+        IdentifyingCodeStructure identifyingCodeStructure = new IdentifyingCodeStructure();
+        identifyingCodeStructure.id = email + type;
+        identifyingCodeStructure.username = email;
+        identifyingCodeStructure.type = type;
+        Random random = new Random();
+        int randomNumber = 100000 + random.nextInt(900000); // 范围是 100000 到 999999
+        identifyingCodeStructure.code = "" + randomNumber;
+        identifyingCodeStructure.startTimeInSeconds = System.currentTimeMillis() / 1000;
+        identifyingCodeStructure.expireTimeInSeconds = expireTimeInSeconds;
+        return identifyingCodeStructure;
+    }
+}

src/main/java/top/lichx/webclassbackend/service/impl/TestImpl.java

@@ -0,0 +1,13 @@
+package top.lichx.webclassbackend.service.impl;
+
+import org.springframework.stereotype.Service;
+import top.lichx.webclassbackend.service.Test;
+
+@Service
+public class TestImpl implements Test {
+
+    @Override
+    public void test() {
+
+    }
+}

src/main/java/top/lichx/webclassbackend/service/impl/UserManagerServiceImpl.java

@@ -0,0 +1,60 @@
+package top.lichx.webclassbackend.service.impl;
+
+import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
+import com.baomidou.mybatisplus.core.metadata.IPage;
+import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
+import jakarta.annotation.Resource;
+import org.springframework.stereotype.Service;
+import top.lichx.webclassbackend.mapper.userManagerInfoMapper;
+import top.lichx.webclassbackend.pojo.entity.UserManagerInfo;
+import top.lichx.webclassbackend.service.UserManagerService;
+@Service
+public class UserManagerServiceImpl implements UserManagerService {
+    @Resource
+    private userManagerInfoMapper userManagerInfoMapper;
+    public void insertUserManagerInfo(UserManagerInfo userManagerInfo) {
+        // 插入用户信息
+        userManagerInfoMapper.insert(userManagerInfo);
+    }
+
+    public void updateUserManagerInfo(UserManagerInfo userManagerInfo) {
+        // 更新用户信息
+        userManagerInfoMapper.updateById(userManagerInfo);
+    }
+
+    public void deleteUserManagerInfo(Integer id) {
+        // 删除用户信息
+        userManagerInfoMapper.deleteById(id);
+    }
+
+    public IPage<UserManagerInfo> getUserManagerInfoPage(int page, int size, String situation) {
+        // 使用 MyBatis-Plus 提供的分页功能
+        Page<UserManagerInfo> pageRequest = new Page<>(page, size);
+        QueryWrapper<UserManagerInfo> queryWrapper = new QueryWrapper<>();
+
+        // 如果 situation 不为空，则添加模糊查询条件
+        if (situation != null && !situation.trim().isEmpty()) {
+            queryWrapper.like("name", situation);
+        }
+
+        return userManagerInfoMapper.selectPage(pageRequest, queryWrapper);
+    }
+
+    public Integer getUserManagerInfoLastId() {
+        UserManagerInfo lastRecord = userManagerInfoMapper.selectOne(
+                new QueryWrapper<UserManagerInfo>().orderByDesc("id").last("LIMIT 1")
+        );
+        // 如果记录为空，返回 0，否则返回最后一条记录的 ID
+        return lastRecord == null ? 0 : lastRecord.getId() + 1;
+    }
+
+    @Override
+    public Integer getTotal(String situation) {
+        QueryWrapper<UserManagerInfo> queryWrapper = new QueryWrapper<>();
+        if (situation != null && !situation.trim().isEmpty()) {
+            queryWrapper.like("name", situation);
+        }
+        return userManagerInfoMapper.selectCount(queryWrapper).intValue();
+    }
+
+}

src/main/java/top/lichx/webclassbackend/service/impl/UserServiceImpl.java

@@ -0,0 +1,55 @@
+package top.lichx.webclassbackend.service.impl;
+
+import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
+import jakarta.annotation.Resource;
+import org.springframework.stereotype.Service;
+import top.lichx.webclassbackend.mapper.userMapper;
+import top.lichx.webclassbackend.pojo.entity.User;
+import top.lichx.webclassbackend.pojo.entity.UserManagerInfo;
+import top.lichx.webclassbackend.service.UserService;
+
+@Service
+public class UserServiceImpl implements UserService {
+    @Resource
+    private userMapper webclassMapper;
+
+    public void insertUser(User user) {
+        webclassMapper.insert(user);
+    }
+
+    public User getUserByUserName(String userName) {
+        QueryWrapper<User> queryWrapper = new QueryWrapper<>();
+        queryWrapper.eq("name", userName);
+        return webclassMapper.selectOne(queryWrapper);
+    }
+
+    public void changeUserPasswordByUserName(String userName, String password) {
+        User user = getUserByUserName(userName);
+        if (user != null) {
+            user.setPassword(password);
+            webclassMapper.updateById(user);
+        }
+    }
+
+    @Override
+    public User getUserByEmail(String email) {
+        QueryWrapper<User> queryWrapper = new QueryWrapper<>();
+        queryWrapper.eq("email", email);
+        return webclassMapper.selectOne(queryWrapper);
+    }
+
+    @Override
+    public Integer getUserLastId() {
+        User lastRecord = webclassMapper.selectOne(
+                new QueryWrapper<User>().orderByDesc("id").last("LIMIT 1")
+        );
+        // 如果记录为空，返回 0，否则返回最后一条记录的 ID
+        return lastRecord == null ? 0 : lastRecord.getId() + 1;
+
+    }
+
+    @Override
+    public Integer getTotal() {
+        return webclassMapper.selectCount(null).intValue();
+    }
+}

src/main/java/top/lichx/webclassbackend/util/COSIO.java

@@ -0,0 +1,70 @@
+package top.lichx.webclassbackend.util;
+
+import com.qcloud.cos.COSClient;
+import com.qcloud.cos.ClientConfig;
+import com.qcloud.cos.Headers;
+import com.qcloud.cos.auth.BasicCOSCredentials;
+import com.qcloud.cos.http.HttpMethodName;
+import com.qcloud.cos.model.GeneratePresignedUrlRequest;
+import com.qcloud.cos.model.PutObjectRequest;
+import com.qcloud.cos.model.PutObjectResult;
+import com.qcloud.cos.model.ResponseHeaderOverrides;
+import com.qcloud.cos.region.Region;
+import com.qcloud.cos.utils.DateUtils;
+import jakarta.annotation.PostConstruct;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.stereotype.Component;
+
+import java.io.File;
+import java.net.URL;
+import java.util.Date;
+import java.util.UUID;
+
+@Component
+public class COSIO {
+    private COSClient cosClient;
+
+    @Value("${tencent.secretId}")
+    private String secretId;
+
+    @Value("${tencent.secretKey}")
+    private String secretKey;
+
+    @Value("${tencent.bucketName}")
+    private String bucketName;
+
+    @Value("${tencent.baseDIR}")
+    private String baseDir;
+
+    @PostConstruct
+    public void Init() {
+        var cred = new BasicCOSCredentials(secretId, secretKey);
+        var region = new Region("ap-shanghai");
+        var clientConfig = new ClientConfig(region);
+        cosClient = new COSClient(cred, clientConfig);
+    }
+
+
+    public String UploadFile(File file) {
+        String fileName = UUID.randomUUID().toString();
+        String key = baseDir + fileName;
+        PutObjectRequest putObjectRequest = new PutObjectRequest(bucketName, key, file);
+        cosClient.putObject(putObjectRequest);
+        return fileName;
+    }
+
+    public URL GetFileLink(String fileName) {
+        GeneratePresignedUrlRequest request = new GeneratePresignedUrlRequest(bucketName, baseDir + fileName, HttpMethodName.GET);
+        ResponseHeaderOverrides responseHeaderOverrides = new ResponseHeaderOverrides();
+        String responseCacheControl = "no-cache";
+        String cacheExpireStr =
+                DateUtils.formatRFC822Date(new Date(System.currentTimeMillis() + 10L * 60L * 1000L));
+        responseHeaderOverrides.setCacheControl(responseCacheControl);
+        responseHeaderOverrides.setExpires(cacheExpireStr);
+        request.setResponseHeaders(responseHeaderOverrides);
+        Date expirationDate = new Date(System.currentTimeMillis() + 10L * 60L * 1000L);
+        request.setExpiration(expirationDate);
+        request.putCustomRequestHeader(Headers.HOST, cosClient.getClientConfig().getEndpointBuilder().buildGeneralApiEndpoint(bucketName));
+        return cosClient.generatePresignedUrl(request);
+    }
+}

src/main/java/top/lichx/webclassbackend/util/JwtUtil.java

@@ -0,0 +1,34 @@
+package top.lichx.webclassbackend.util;
+
+import io.jsonwebtoken.*;
+import io.jsonwebtoken.security.Keys;
+
+import java.security.Key;
+import java.util.Date;
+
+public class JwtUtil {
+    private static final Key key = Keys.secretKeyFor(SignatureAlgorithm.HS256); // 生成密钥
+    private static final long EXPIRATION_TIME = 86400000; // 1 天
+
+    public static String generateToken(String username) {
+        return Jwts.builder()
+                .setSubject(username)
+                .setIssuedAt(new Date())
+                .setExpiration(new Date(System.currentTimeMillis() + EXPIRATION_TIME))
+                .signWith(key)
+                .compact();
+    }
+
+    public static String parseToken(String token) {
+        try {
+            Claims claims = Jwts.parserBuilder()
+                    .setSigningKey(key)
+                    .build()
+                    .parseClaimsJws(token)
+                    .getBody();
+            return claims.getSubject();
+        } catch (JwtException e) {
+            return null; // Token 无效或过期
+        }
+    }
+}

src/main/java/top/lichx/webclassbackend/util/MailUtil.java

@@ -0,0 +1,49 @@
+package top.lichx.webclassbackend.util;
+
+import jakarta.annotation.Resource;
+import jakarta.mail.*;
+import jakarta.mail.internet.InternetAddress;
+import jakarta.mail.internet.MimeMessage;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+import top.lichx.webclassbackend.config.MailProperties;
+
+import java.util.Properties;
+
+@Component
+public class MailUtil {
+
+    @Resource
+    private MailProperties mailProperties;
+
+    public void sendHtmlEmail(String to, String subject, String htmlContent) throws MessagingException {
+        // 配置 SMTP 服务器
+        Properties props = new Properties();
+        props.put("mail.smtp.host", mailProperties.getHost());
+        props.put("mail.smtp.port", String.valueOf(mailProperties.getPort()));
+        props.put("mail.smtp.auth", String.valueOf(mailProperties.isAuth()));
+        props.put("mail.smtp.starttls.enable", String.valueOf(mailProperties.isStarttls()));
+
+        // 认证信息
+        String username = mailProperties.getUsername();
+        String password = mailProperties.getPassword();
+
+        // 创建会话
+        Session session = Session.getInstance(props, new Authenticator() {
+            @Override
+            protected PasswordAuthentication getPasswordAuthentication() {
+                return new PasswordAuthentication(username, password);
+            }
+        });
+
+        // 创建邮件
+        Message message = new MimeMessage(session);
+        message.setFrom(new InternetAddress(username));
+        message.setRecipients(Message.RecipientType.TO, InternetAddress.parse(to));
+        message.setSubject(subject);
+        message.setContent(htmlContent, "text/html; charset=utf-8"); // 设置内容为 HTML 格式
+
+        // 发送邮件
+        Transport.send(message);
+    }
+}

src/main/java/top/lichx/webclassbackend/util/PasswordUtil.java

@@ -0,0 +1,18 @@
+package top.lichx.webclassbackend.util;
+
+import org.apache.commons.codec.digest.DigestUtils;
+import org.springframework.stereotype.Component;
+
+@Component
+public class PasswordUtil {
+
+    // 加密密码（使用 SHA-256）
+    public String encrypt(String rawPassword) {
+        return DigestUtils.sha256Hex(rawPassword);
+    }
+
+    // 验证密码
+    public boolean matches(String rawPassword, String encryptedPassword) {
+        return encrypt(rawPassword).equals(encryptedPassword);
+    }
+}

src/main/resources/application.properties

@@ -1 +1,11 @@
 spring.application.name=WebClassBackend
+
+# ???????
+spring.datasource.url=jdbc:mariadb://localhost:3306/webclass
+spring.datasource.username=webclass
+spring.datasource.password=123456
+
+spring.servlet.multipart.enabled=true
+spring.servlet.multipart.max-file-size=50MB
+spring.servlet.multipart.max-request-size=50MB
+p

src/main/resources/application.yml

@@ -0,0 +1,3 @@
+spring:
+  profiles:
+    active: dev