Angular6 - 读取 text/plain 的响应主体

Angular6 - Read response body of text/plain

我正在执行注册操作,当用户成功注册时,我会在后台执行 return 他的 ID,例如“105”并且当注册失败时(用户已经存在)我return"USER_EXISTS"。我已经检查了 Postman 上的请求,响应正文是正确的。
在这两种情况下,我 return "plain/text".

但是,我无法找到如何通过我获得的 Observable 对象获得响应的主体 return。

在register.component.ts中:

userExists = "";
onSubmit() {

    const newUser : RegisterUser = {  email: this.register.email,
                                  password: this.register.password,
                                  firstName: this.register.firstName,
                                  lastName: this.register.lastName,
                                  phoneNumber: this.register.phoneNumber}


    this.registerService.addUser(newUser)
    .subscribe(response => (this.userExists = response)); //The purpose of this line is to get the body of the text/plain response and assign it into the this.userExists string
}

在RegisterService.service.ts

addUser (registerUser) {

    return this.http.post(this.apiRoot + "User/add", registerUser, httpOptions);
}

在RegisterService.service.ts中,添加地图并将响应转换为文本,如下所示:

添加用户(注册用户){

return this.http.post(this.apiRoot + "User/add", registerUser, httpOptions).map(res => res.text());

}

默认angular 6 产生JSON响应 如果你想要 text/plain 你应该设置 responseType'text'

 addUser (registerUser) {
    return this.http.post(this.apiRoot + "User/add", {responseType: 'text'});
 }

尝试将其附加到 httpOptions

检查一下text/plain