Question

以下是发布请求的代码：

foo@.Data

以下是我尝试访问请求正文的节点代码，请求正文在以下情况下为空：

export class AuthenticationService {

    private authUrl = 'http://localhost:5555/api/auth';

    constructor(private http: HttpClient) {}

    login(username: string, password: string) {
      console.log(username);
      let data = {'username': username, 'password': password};
      const headers = new HttpHeaders ({'Content-Type': 'application/json'});
      //let options = new RequestOptions({headers: headers});
      return this.http.post<any>(this.authUrl, JSON.stringify({data: data}), {headers: headers});
    }
}

Answer 1

您应该发送formdata请求而不是JSON有效负载。

首先，您必须设置正确的内容类型标题：

const headers = new HttpHeaders({
    'Content-Type': 'application/x-www-form-urlencoded'
});

其次，你必须发送一个FormData对象：

const data = new FormData();
data.append("username", username);
data.append("password", password);
// ...
return this.http.post<any>(this.authUrl, data, {headers: headers});

Answer 2

使用以下方法成功发送了请求：

<强>角：

login(username: string, password: string) {
      const data = {'username': username, 'password': password};
      const config = { headers: new HttpHeaders().set('Content-Type', 'application/json') };
      return this.http.post<any>(this.authUrl, data, config)
                                .map(res => {
                                  console.log(res);
                                  if (res.user === true) {
                                    localStorage.setItem('currentUser', res.user);
                                    localStorage.setItem('role', res.role);
                                  }
                                  return res;
                                  },
                                  err => {
                                    return err;
                                  }
                                );

    }

<强>节点

var bodyParser = require('body-parser');
router.use(bodyParser.json());

router.post('/api/auth', function(req, res){
  console.log("request received " + req.body);
});

如何以角度4发送帖子正文中的数据

2 个答案: