我可以在angular2中返回原始json响应吗 [英] Can I return raw json response in angular2

问题描述

angular2是否有可能返回原始的json响应?例

Is it possible for angular2 to return raw json response? Ex.

组件

getrawJson(){
    this.someservice.searchJson()
    .subscribe( somelist => this.somelist = somelist,
                 error => this.errorMsg = <any>error);
}

服务

    searchJson(num: number, somestring: string, somestring2: string): Observable<stringDataObj> {

        let body = JSON.stringify({"someJsonData"[{num, somestring, somestring2}]}); 
        let headers = new Headers({ 'Content-Type': 'application/json' });
        let options = new RequestOptions({ headers: headers });


        return this.http.post(URL, body, options)
                        .map(this.jsonObj)
                        .catch(this.handleError);

      }


private jsonObj(res: Response) {
    let body;
    return body{ };
}

以上实现返回Array.我有办法获取服务返回的原始json数据吗?我期望像下面这样的json响应

The above implementation returns Array . Will there be a way for me to get the raw json data returned by the service? I'm expecting to have json response like below

{ "dataParam":[{ "num":"08"， "somestring":"2016-10-03"， "somestring2":"2016-10-03" }]， "someDatalist":[{ 一个":"08"， 两个":1， 三":"2016-10-03" }] }

{ "dataParam": [ { "num": "08", "somestring": "2016-10-03", "somestring2": "2016-10-03" }], "someDatalist": [ { "one": "08", "two": 1, "three": "2016-10-03" }] }

谢谢！

推荐答案

可以，当然可以！

实际上，angualar2以Observable的形式返回Response，而不是angular1.x中的promise，因此，为了将可观察的结果转换为原始Json格式，我们必须使用angular2的默认方法，即

Actually angualar2 returns Response in the form of Observable instead of promise Like in angular1.x , so in order to convert that observable into raw Json format we have to use the default method of angular2 i.e

res.json()

除了由角度提供的.json()之外，没有其他方法可以在此处进行介绍，以获取更多信息.

There are no of method apart from .json() provided by angular which can be described here for more info.

方法包括

• res.text()
• res.status
• res.statusText 等等

• res.text()
• res.status
• res.statusText etc

https://angular.io/docs/ts/latest/api/http/index/Response-class.html

更新

像这样使用您的代码

update

use your code like this

return this.http.post(URL, body, options)
                        .map(res => {return res.json()})
                        .catch(this.handleError);

      }

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