Question

我有自己的API和POST路由，工作方式如下

Server

//  Handling CORS with a simple lazy CORS
$app->options('/{routes:.+}', function ($request, $response, $args) {
    return $response;
});
$app->add(function ($req, $res, $next) {
    $response = $next($req, $res);
    return $response
        ->withHeader('Access-Control-Allow-Origin', '*')
        ->withHeader('Access-Control-Allow-Headers', 'X-Requested-With, Content-Type, Accept, Origin, Authorization, application/json')
        ->withHeader('Access-Control-Allow-Methods', 'GET, POST')
        ->withHeader('Content-Type','application/json')
        ->withHeader('X-Powered-By','Mercurial API');

});

...

$app->post('/api/log', function( Request $request, Response $response){

    $category = $request->getParam('category');
    $value = $request->getParam('value');

    return logQuery($category, $value, $response);

});

当我从其他来源发送HTTP POST请求时，服务器响应正常，Kindly click here to see the example

类别：“某些猫”

值：“ SOME VAL”

但是当我通过Angular应用发送时，

const httpOptions = {
  headers: new HttpHeaders({
    'Content-Type':'application/json'
  })
};

...

  public putLog(category: string, value: string) {
    //  You can add new argument in header like,
    //  httpOptions.headers = httpOptions.headers.set('Authorization', 'my-new-auth-token');

    const body = JSON.stringify({ category: category, value: value });

    console.log(body);
    return this.http.post<any>(this.apiUrl + '/log', body, httpOptions)
      .subscribe(
        data => {
          console.log('PUT Request is successful.');
        },
        (err: HttpErrorResponse) => {
          if (err.error instanceof Error) {
            console.log('Client-side error occured.');
          } else {
            console.log('Server-side error occured.');
          }
        });

    }
  }

我遇到以下错误。

{"category":"message","value":"asdasd"}
Server-side error occured.
OPTIONS https://sizilkrishna.000webhostapp.com/api/public/api/log net::ERR_HTTP2_PROTOCOL_ERROR

我在做什么错了？

Answer 1

您的api需要HttpParams，因此您应该将参数设置为params而不是body：

const params = new HttpParams().set("category", category).set("value", value);

const httpOptions = {
  headers: new HttpHeaders({
    'Accept': 'application/json',
  }),
  params: params
};

然后将正文设为null：

return this.http
  .post<any>(
    this.apiUrl + "/log",
    null,
    httpOptions
  )
  // .....

这似乎很好用： STACKBLITZ

Answer 2

您是否在发布请求中缺少请求参数？

{参数：{类别：'2'，消息：..，...}}

因为当我使用带有请求参数的链接时，我得到200的结果。但您没有将请求参数发送到后端。

发送带有角度的请求参数或在后端请求一个请求主体。但是我对节点/表达式不熟悉。但似乎那是怎么回事。

Answer 3

搜索了几个小时终于得到了解决方案我的问题是当我将标头传递给http get或post请求时，我收到ERR_HTTP2_PROTOCOL_ERROR错误仅当我使用有角度的http并且api在邮递员或其他带有标题的在线http投递工具上完美运行时，我才看到问题。

我提出的解决方案是转到服务器端的php文件（api文件）并确保其仅返回不超过一个的单个回声，并检查是否需要解决任何问题。

这是我的代码

import { HttpClient , HttpParams, HttpHeaders, HttpErrorResponse} from '@angular/common/http';

  const httpOptions = {
     headers: new HttpHeaders({
     'Content-Type':  'application/json',
     Authorization: 'Your-Api-Key'
   })
   };

   console.log(httpOptions)

   return this.http.get('http://localhost:8080/api.php',httpOptions).subscribe((data)=>{
        console.log(data)
    })

Angular HTTP POST请求抛出net :: ERR_HTTP2_PROTOCOL_ERROR错误

3 个答案: