类型 'Observable<Observable<Object[]>>' 不可分配给类型 'Observable<Object[]>'

Question

这曾经在 Angular 2/4 中工作，但自从我升级到 Angular 7 后，我在整个应用程序中都遇到了这个错误。突然可能是什么问题？

Type 'Observable<Observable<Object[]>>' is not assignable to type 'Observable<Object[]>'


Type 'Observable<Object>' is not assignable to type 'Observable<object[]>'.
  Type 'Object' is not assignable to type 'object[]'.
    The 'Object' type is assignable to very few other types. Did you mean to use the 'any' type instead?
      Property 'includes' is missing in type 'Object'.

我尝试使用 'any' 类型，但它仍然有同样的错误。

受影响的代码：

getProfiles(): Observable<any[]> {
    const _url: string = this._serviceUrl + 'api/GetUserProfiles/';
    return this._http.get(_url)
        .catch(this.handleError);
}

调用方法

 this._exceptionService.getProfiles().subscribe(data => {
    this.data = data[0];
    }

package.json

"@angular/animations": "^7.0.0",
"@angular/cdk": "^7.0.0",
"@angular/common": "^7.0.0",
"@angular/compiler": "^7.0.0",
"@angular/core": "^7.0.0",
"@angular/forms": "^7.0.0",
"@angular/http": "^7.0.0",
"@angular/material": "^7.0.0",
"@angular/platform-browser": "^7.0.0",
"@angular/platform-browser-dynamic": "^7.0.0",
"@angular/router": "^7.0.0",

Answer 1

我运行以前遇到过这个问题。将您的 Observable 更改为 return any

Remove the array brackets []

  getProfiles(): Observable<any> {
        const _url: string = this._serviceUrl + 'api/GetUserProfiles/';
        return this._http.get(_url)
            .catch(this.handleError);
    }

类型 'Observable<Observable<Object[]>>' 不可分配给类型 'Observable<Object[]>'

Type 'Observable<Observable<Object[]>>' is not assignable to type 'Observable<Object[]>'

typescript

angular

angular7