我从官方文档中做了一些例子：
https://angular.io/docs/ts/latest/api/core/index/ErrorHandler-class.html

import{ErrorHandler} from "@angular/core";
import{NgModule} from "@angular/core";
export class MyErrorHandler implements ErrorHandler {

    call(error: any,stackTrace: any = null,reason: any = null) {
        // do something with the exception
        console.log("do something with the exception");
    }

    // I handle the given error.
    public handleError( error: any ): void {
        console.log("I handle the given error");
    }

}
@NgModule({
    providers: [
        {
            provide: ErrorHandler,useClass: MyErrorHandler
        }
     ]
})
export class MyErrorModule {}

我编辑app.module文件后

import {MyErrorHandler} from "./error.module";
import {MyErrorModule } from "./error.module";
..
@NgModule({
    imports: [
        MyErrorModule
    ....
    ],...
    providers: [MyErrorHandler]
   ....

现在MyErrorHandler捕获错误：

throw new Error("my test error");

但它没有捕获http错误,如：“GET http://example.com/rest/user 401(未经授权)”.
任何人都可以解释一下吗？

提前致谢！