[英]Angular / Spring Boot | error: SyntaxError: “JSON.parse: unexpected character at line 1 column 1 of the JSON data”
我目前正在编写一个教程来了解 Spring Boot,目前面临以下问题。
在我的注册过程中(正常工作 -> 用户最终进入数据库)我在浏览器控制台中收到状态代码 200/OK,但还有一条关于语法不正确的错误消息:
我的后端代码如下所示:
认证控制器:
@RestController
@RequestMapping(value = "/api/auth")
@AllArgsConstructor
public class AuthController {
private final AuthService authService;
private final RefreshTokenService refreshTokenService;
@PostMapping(value = "/signup")
public ResponseEntity<String> signup(@RequestBody RegisterRequest registerRequest) {
/*
* RegisterRequest: Through this class we are transferring the user details like username, password and email as part of the RequestBody (DTO)
* */
authService.signUp(registerRequest);
return new ResponseEntity<>("Registration Successful", null, OK);
}
....
认证服务:
@Transactional
public void signUp(RegisterRequest registerRequest) {
User user = new User();
user.setUsername(registerRequest.getUsername());
user.setEmail(registerRequest.getEmail());
user.setPassword(passwordEncoder.encode(registerRequest.getPassword()));
user.setCreated(now());
user.setEnabled(false);
userRepository.save(user);
String token = generateVerificationToken(user);
String message = mailContentBuilder.build("Thank you for signing up to Spring Reddit, please click on the below url to activate your account : "
+ ACTIVATION_EMAIL + "/" + token);
mailService.sendMail(new NotificationEmail("Please Activate your account", user.get
Email(), message));
}
使用 DTO:
public class RegisterRequest {
private String email;
private String username;
private String password;
}
我的前端代码如下所示:
注册组件:
signUp() {
this.signUpRequestPayload.email = this.signUpForm.get('email').value;
this.signUpRequestPayload.password = this.signUpForm.get('password').value;
this.signUpRequestPayload.username = this.signUpForm.get('username').value;
this.authService.signUp(this.signUpRequestPayload).subscribe((data) => {
console.log('Sign up successful', data);
});
}
认证服务:
@Injectable({
providedIn: 'root'
})
export class AuthService {
private headers = new HttpHeaders({ 'Content-Type': 'application/json' });
constructor(private http: HttpClient) { }
signUp(signUpRequestPayload: SignUpRequestPayload): Observable<SignUpRequestPayload> {
const body = JSON.stringify(signUpRequestPayload);
return this.http.post<SignUpRequestPayload>('http://localhost:8080/api/auth/signup', body, { headers: this.headers });
}
}
使用的接口:
export class SignUpRequestPayload {
email: string;
password: string;
username: string;
}
我在这里做错了什么?
我是这样解决的:
signUp(signUpRequestPayload: SignUpRequestPayload): Observable<string> {
const body = signUpRequestPayload;
return this.http.post('http://localhost:8080/api/auth/signup', body, { responseType: 'text', headers: this.headers });
}
我不得不从 post 方法中删除并将 responseType 设置为“text”。 我还必须删除 JSON.stringify() 方法并将返回类型设置为 Observable。
由于您的响应(“注册成功”)无效 JSON。
所以请从下面的行中删除<SignUpRequestPayload>
return this.http.post<SignUpRequestPayload>
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.