更新 UserService.java

src/main/java/com/gao/finalhw/service/UserService.java

@@ -1,16 +1,28 @@
 package com.gao.finalhw.service;
 
+import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
 import com.gao.finalhw.mapper.UserMapper;
 import com.gao.finalhw.model.User;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 
 @Service
 public class UserService {
+    private final Logger logger = LoggerFactory.getLogger(UserService.class);
     @Autowired
     private UserMapper userMapper;
 
     public User getUserByUsernameAndPassword(String username, String password) {
-        return userMapper.findByUsernameAndPassword(username, password);
+        logger.info("start getUserByUsernameAndPassword");
+
+        QueryWrapper<User> wrapper = new QueryWrapper<>();
+        wrapper.eq("user_name", username)  // 假设字段名为 'username'
+                .eq("password", password); // 假设字段名为 'password'
+
+        User result = userMapper.selectOne(wrapper);
+        logger.info("query result: {}",result.toString());
+        return result;
     }
 }