Question

我在Spring Bboot中创建了一个REST API，在Angular 4中创建了一个客户端应用程序。我在本地运行这两个应用程序。当我从POST测试postman方法时效果很好，但是当我从Angular 4应用程序发出POST请求时，会产生400 Bad request。 REST API在控制台上显示以下错误

Failed to read HTTP message: org.springframework.http.converter.HttpMessageNotReadableException: Required request body is missing

REST API有一个POST方法，如下所示：

@CrossOrigin(origins = "*")
    @RequestMapping(value="/api/newcustomer", method=RequestMethod.POST, consumes= "application/json")
    public Customer addCustomer(@RequestBody Customer customer){
        System.out.println("***********"+customer.getFirstName());
        return customer;
    }

Angular服务

@Injectable()
export class PostdataService {

  constructor(private _http : Http) {}

  postContactFormData(firstName, lastName, accounts, phoneNumber){
    var body : {firstName , lastName, accounts, phoneNumber};
    var headers = new Headers({ 'Content-Type': 'application/json' });
    return this._http.post('http://localhost:8080/api/newcustomer/', JSON.stringify(body),{
        headers : headers
    }).subscribe(
        () =>{},
        err => console.error(err)
    );
  }

}

Customer班

public class Customer {

     private String firstName;
     private String lastName;
     private String phoneNumber;
     private List<Account> accounts;

     public Customer(){

     }

Answer 1

通过诸如jsonlint.com之类的linter运行您的请求正文。

您尝试stringify的请求无效json {"firstName": "firstName", "lastName": "lastName", "accounts": [1, 2, 3], "phoneNumber": 1.800.123.4567}应该是这样的：

props

从角度到弹簧休息api的POST请求

1 个答案: