feat(security): 添加 JWT 认证功能

- 在后端添加 JWT 认证过滤器 JwtAuthenticationTokenFilter
- 创建 JwtTokenUtil 工具类用于生成和验证 JWT token
- 在 application.yml 中配置 JWT 相关参数
- 更新前端 HomePage 组件，增加用户认证相关逻辑

biji-houdaun/src/main/java/com/test/bijihoudaun/service/UserService.java

@@ -19,7 +19,7 @@ public interface UserService extends IService<User> {
      * @param password 密码
      * @return 登录成功的用户
      */
-    User login(String username, String password);
+    String login(String username, String password);
 
     /**
      * 用户删除

biji-houdaun/src/main/java/com/test/bijihoudaun/service/impl/UserServiceImpl.java

@@ -6,21 +6,34 @@ import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
 import com.test.bijihoudaun.entity.User;
 import com.test.bijihoudaun.mapper.UserMapper;
 import com.test.bijihoudaun.service.UserService;
+import com.test.bijihoudaun.util.JwtTokenUtil;
 import com.test.bijihoudaun.util.PasswordUtils;
 import com.test.bijihoudaun.util.UuidV7;
 import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.security.core.userdetails.UserDetails;
+import org.springframework.security.core.userdetails.UserDetailsService;
+import org.springframework.security.core.userdetails.UsernameNotFoundException;
 import org.springframework.stereotype.Service;
 
-import java.time.LocalDateTime;
+import java.util.ArrayList;
 import java.util.Calendar;
 import java.util.Date;
 
 @Service
-public class UserServiceImpl extends ServiceImpl<UserMapper, User> implements UserService {
+public class UserServiceImpl extends ServiceImpl<UserMapper, User> implements UserService, UserDetailsService {
 
     @Autowired
     private UserMapper userMapper;
 
+    @Override
+    public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
+        User user = userMapper.findByUsername(username);
+        if (user == null) {
+            throw new UsernameNotFoundException("User not found with username: " + username);
+        }
+        return new org.springframework.security.core.userdetails.User(user.getUsername(), user.getPassword(), new ArrayList<>());
+    }
+
     @Override
     public User register(String username, String password, String email) {
         String encrypt = PasswordUtils.encrypt(password);
@@ -43,23 +56,16 @@ public class UserServiceImpl extends ServiceImpl<UserMapper, User> implements Us
         return user;
     }
 
+    @Autowired
+    private JwtTokenUtil jwtTokenUtil;
+
     @Override
-    public User login(String username, String password) {
-        LambdaQueryWrapper<User> queryWrapper = new LambdaQueryWrapper<>();
-        queryWrapper.eq(User::getUsername, username);
-        User user = userMapper.selectOne(queryWrapper);
-        boolean verify = PasswordUtils.verify(password, user.getPassword());
-        if (!verify) {
+    public String login(String username, String password) {
+        UserDetails userDetails = loadUserByUsername(username);
+        if (!PasswordUtils.verify(password, userDetails.getPassword())) {
             throw new RuntimeException("密码错误");
         }
-        user.setToken(UuidV7.uuidNoHyphen());
-        // 过期时间：当前时间+3天的时间
-        // 修改时间计算方式
-        Calendar calendar = Calendar.getInstance();
-        calendar.add(Calendar.DAY_OF_MONTH, 3); // 增加3天
-        user.setTokenEnddata(calendar.getTime());
-        userMapper.updateById(user);
-        return user;
+        return jwtTokenUtil.generateToken(userDetails);
     }
 
     @Override