HttpClient尝试将有效负载解析为json-HttpClienttriestoparsepayloadtojson

I'm working on a project which has rails api as a back-end and angular as a front end. In one particular point I need to make a text/plain call. Even though I set the content-type to 'text/plain', HttpClient tries to parse payload to json. I can't figure out why it behaves like that.

我正在开发一个项目，它有一个rails api作为后端，有角度作为前端。在一个特定点上，我需要进行文本/普通呼叫。即使我将content-type设置为'text / plain'，HttpClient也会尝试将有效负载解析为json。我无法弄清楚为什么它会像那样。

Rails back-end:

Rails后端：

def getTranslations
  render plain: 'some plain text'
end

Angular Client:

角度客户：

headers = new HttpHeaders({
  "Content-Type": "text/plain",
  "Accept": "text/plain"
});


this.http.get('http://localhost:3000/getTranslations', { headers: this.headers })
 .map((res:Response) => {
   console.log(res);
   return res.text()
 })
 .subscribe(
   res => {
     console.log(res);
   },
   err => {
     console.log(err);
   }
 )

Response:

响应：

"Http failure during parsing for http://localhost:3000/getTranslations" Unexpected token s in JSON

“解析http：// localhost：3000 / getTranslations期间的Http失败”JSON中出现意外的令牌

Thanks.

谢谢。

1 个解决方案

this.http.get('http://localhost:3000/getTranslations', { responseType: 'text'} )
  .map((res:string) => {
    console.log(res);
    return res
  })
  .subscribe(
    res => {
      console.log(res);
    },
    err => {
      console.log(err);
    }
  )