Question

我将我的angular2应用程序升级到RC5，现在Http.delete操作失败（在它执行之前）成功之前。

这里是package.json： "@angular/common": "2.0.0-rc.5", "@angular/compiler": "2.0.0-rc.5", "@angular/core": "2.0.0-rc.5", "@angular/http": "2.0.0-rc.5", "@angular/forms": "0.3.0", "@angular/platform-browser": "2.0.0-rc.5", "@angular/platform-browser-dynamic": "2.0.0-rc.5", "@angular/router": "3.0.0-rc.1", "@angular/router-deprecated": "2.0.0-rc.2", "@angular/upgrade": "2.0.0-rc.5",

以下是我如何使用它：

deleteUser(id){
    let headers = new Headers({ 'Content-Type': 'application/json'});
    let options = new RequestOptions({ headers: headers });
    return this.http.delete(this._usersUrl + '/' + id, options)
         .map(res => { 
             return <User>res.json()
         })
        .catch(this.handleError)
}

调试时我可以看到，直到http.delete 和执行删除操作时才会崩溃（DELETE不会发送到服务器）。我检查了docs for Http api以防我错过了一些论点，但我认为它们没问题。

仔细检查，没有执行任何删除操作，但其他HTTP操作正常。有任何线索吗？

我得到的错误如下：

platform-browser.umd.min.js:6 ORIGINAL EXCEPTION: TypeError: Cannot read property 'toString' of nullBrowserDomAdapter.logError @ platform-browser.umd.min.js:6ExceptionHandler.call @ core.umd.min.js:7next @ core.umd.min.js:10generatorOrNext.object.schedulerFn @ core.umd.min.js:10t.__tryOrUnsub @ Rx.min.js?cb=e6b3f62:11t.next @ Rx.min.js?cb=e6b3f62:11t._next @ Rx.min.js?cb=e6b3f62:11t.next @ Rx.min.js?cb=e6b3f62:11t._finalNext @ Rx.min.js?cb=e6b3f62:11t._next @ Rx.min.js?cb=e6b3f62:11t.next @ Rx.min.js?cb=e6b3f62:11EventEmitter.emit @ core.umd.min.js:10onError @ core.umd.min.js:10onHandleError @ core.umd.min.js:10e.handleError @ zone.min.js?cb=e6b3f62:1e.runGuarded @ zone.min.js?cb=e6b3f62:1NgZoneImpl.runInnerGuarded @ core.umd.min.js:10NgZone.runGuarded @ core.umd.min.js:10outsideHandler @ platform-browser.umd.min.js:7e.invokeTask @ zone.min.js?cb=e6b3f62:1e.runTask @ zone.min.js?cb=e6b3f62:1invoke @ zone.min.js?cb=e6b3f62:1 platform-browser.umd.min.js:6 ORIGINAL STACKTRACE:BrowserDomAdapter.logError @ platform-browser.umd.min.js:6ExceptionHandler.call @ core.umd.min.js:7next @ core.umd.min.js:10generatorOrNext.object.schedulerFn @ core.umd.min.js:10t.__tryOrUnsub @ Rx.min.js?cb=e6b3f62:11t.next @ Rx.min.js?cb=e6b3f62:11t._next @ Rx.min.js?cb=e6b3f62:11t.next @ Rx.min.js?cb=e6b3f62:11t._finalNext @ Rx.min.js?cb=e6b3f62:11t._next @ Rx.min.js?cb=e6b3f62:11t.next @ Rx.min.js?cb=e6b3f62:11EventEmitter.emit @ core.umd.min.js:10onError @ core.umd.min.js:10onHandleError @ core.umd.min.js:10e.handleError @ zone.min.js?cb=e6b3f62:1e.runGuarded @ zone.min.js?cb=e6b3f62:1NgZoneImpl.runInnerGuarded @ core.umd.min.js:10NgZone.runGuarded @ core.umd.min.js:10outsideHandler @ platform-browser.umd.min.js:7e.invokeTask @ zone.min.js?cb=e6b3f62:1e.runTask @ zone.min.js?cb=e6b3f62:1invoke @ zone.min.js?cb=e6b3f62:1 platform-browser.umd.min.js:6 TypeError: Cannot read property 'toString' of null at Request.Body.text (http.umd.min.js:6) at Request.getBody (http.umd.min.js:7) at eval [as _subscribe] (http.umd.min.js:6) at e.subscribe (Rx.min.js?cb=e6b3f62:11) at e._subscribe (Rx.min.js?cb=e6b3f62:11) at e.call (Rx.min.js?cb=e6b3f62:7)

Answer 1

随着Angular 2.0发布，请尝试将代码升级到稳定版本。

Angular2 - RC5 Http.delete失败

1 个答案: