415 不支持的媒体类型；Angular2 到 API [英] 415 Unsupported Media Type; Angular2 to API

问题描述

我是 angular 2 的新手，我遇到了一个找不到解决方案的问题:当我尝试从 angular 2 发布到 API 时，我得到 - 415 不受支持的媒体类型.

i am new to angular 2 and i'm facing a problem which i cant find a solution: When i try to post from angular 2 to API i get - 415 unsupported media type.

Angular 2 代码:

Angular 2 code:

 onSubmit(value: any) {
    // console.log(value.message);
    let headers = new Headers({ 'Content-Type': 'application/json'});
    let options = new RequestOptions({ headers: headers });
    let creds = 'statusuknown';
    let body = JSON.stringify(creds);
    this.http.post('http://localhost:1318/api/ActionItem', creds)
      .subscribe(
        () => {console.log('Success')},
        err => {console.error(err)}
      );
  }

还有我的控制器代码:

 // POST api/actionitem
        [HttpPost]
        public ActionItem Post( [FromBody]string str)// _id, string _status)
        {
            ActionItem item = new ActionItem( 313, str);
            return item;
        }

当我更改控制器代码以不从正文获取数据时，它可以工作但引用 NULL.

when i change the controller code to not get data from body it works but refers NULL.

我的API调用截图:请帮助&如果需要更多详细信息，请告诉我.

My API call screenshot: Please help & let me know if more details needed.

推荐答案

您定义了标题，但没有使用它.将您的代码更改为

You defined headers, but didn't use it. Change your code to

this.http.post('http://localhost:1318/api/ActionItem', body, options).map(response => response.json())
      .subscribe(
        () => {console.log('Success')}
      );

这篇关于415 不支持的媒体类型；Angular2 到 API的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！