微调了loginResponse DTO的字段名

src/main/java/org/cmh/backend/authentication/controller/AuthenticationController.java

@@ -49,7 +49,7 @@ class AuthenticationController {
         if (isValidUser) {
             return new ResponseEntity<>(new LoginResponse("登录成功", JwtUtil.generateToken(loginRequest.getUsername())), HttpStatus.OK);
         } else {
-            return new ResponseEntity<>(new LoginResponse("用户名或密码错误", ""), HttpStatus.UNAUTHORIZED);
+            return new ResponseEntity<>(new LoginResponse("用户名或密码错误", null), HttpStatus.UNAUTHORIZED);
         }
     }
 

src/main/java/org/cmh/backend/authentication/dto/LoginResponse.java

@@ -9,5 +9,5 @@ import lombok.Setter;
 @AllArgsConstructor
 public class LoginResponse {
     private String message;
-    private String jwt;
+    private String token;
 }