Angular2 - http.get不会调用webpi [英] Angular2 - http.get not calling the webpi
问题描述
<$ c $我不知道为什么这个命令可以正常运行,但我无法在Fiddler中找到任何调用日志。 c> let z = this.http.get('http:// localhost:51158 / api / User / TestIT?idUser = 0')
代码传递到这一步,但如果我尝试使用fiddler捕获所有http请求,我找不到任何调用...
你有什么想法吗?
谢谢
要发起请求并接收到响应,您可以添加 map()
和 .catch()
返回可观察响应
示例服务:
import {Http,Response } from @ angular / http';
导入'rxjs / add / operator / catch';
导入'rxjs / add / operator / map';
...
getMyData():可观察< any> {
返回this.http.get(的 'http://本地主机:51158 /原料药/用户/的TestIt ID用户所= 0?')
.MAP((RES:响应)=> {
console.log(res);
return res;
})
.catch((err)=> {
// TODO:错误处理
console.log(err);
return err;
}
}
然后订阅Observable-returning方法来执行请求:
示例订阅
...
this.getMyData()
.subscribe((res:any)=> {
console.log(res);
},
error => {
// TODO:错误处理
console.log(error);
});
对于一个好的初学者例子,你可以参考 Angular Heroes Tour 示例
$ b 注意:未经测试的代码 p>
I don't know why this command runs properly but I can't find any log of calls in Fiddler...
let z = this.http.get('http://localhost:51158/api/User/TestIT?idUser=0')
The code pass into this step but If I try to catch all the http request using fiddler, I can't find any call...
Do you have idea on what is happening ?
Thanks
To initiate a request and receive a response you can add map()
and .catch()
to return an Observable response from your method.
Example Service:
import { Http, Response } from '@angular/http';
import 'rxjs/add/operator/catch';
import 'rxjs/add/operator/map';
...
getMyData(): Observable<any> {
return this.http.get('http://localhost:51158/api/User/TestIT?idUser=0')
.map((res: Response) => {
console.log(res);
return res;
})
.catch((err) => {
// TODO: Error handling
console.log(err);
return err;
}
}
Then subscribe to the Observable-returning method to execute the request:
Example Subscription
...
this.getMyData()
.subscribe((res: any) => {
console.log(res);
},
error => {
// TODO: Error handling
console.log(error);
});
For a good starter example you can refer to the Angular Tour of Heroes Example
Note: Untested code
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