尝试使用 kendo-upload 和 Angular 上传文件时出错 5

Question

我正在尝试使用 Kendo UI 的 Angular.

上传组件将文件（图像）上传到远程服务器

avatar.component.html

<kendo-upload
        [saveUrl]="uploadSaveUrl"
></kendo-upload>

avatar.component.ts

uploadSaveUrl = 'http://localhost:9001/common/file/saveAvatar';

来自浏览器控制台的错误

ERROR TypeError: Cannot read property 'type' of undefined
at SafeSubscriber.eval [as _next] (upload.service.js:151)
at SafeSubscriber.__tryOrSetError (Subscriber.js:249)
at SafeSubscriber.next (Subscriber.js:189)
at Subscriber._next (Subscriber.js:128)
at Subscriber.next (Subscriber.js:92)
at MergeMapSubscriber.notifyNext (mergeMap.js:151)
at InnerSubscriber._next (InnerSubscriber.js:25)
at InnerSubscriber.Subscriber.next (Subscriber.js:92)
at CatchSubscriber.Subscriber._next (Subscriber.js:128)
at CatchSubscriber.Subscriber.next (Subscriber.js:92)
    View_UploadComponent_0 @ UploadComponent.html:54
    proxyClass @ compiler.js:14645
    DebugContext_.logError @ core.js:14981
    ErrorHandler.handleError @ core.js:1501
    dispatchEvent @ core.js:9948
    (anonymous) @ core.js:10569
    (anonymous) @ platform-browser.js:2628
    ZoneDelegate.invokeTask @ zone.js:421
    onInvokeTask @ core.js:4724
    ZoneDelegate.invokeTask @ zone.js:420
    Zone.runTask @ zone.js:188
    ZoneTask.invokeTask @ zone.js:496
    invokeTask @ zone.js:1517
    globalZoneAwareCallback @ zone.js:1543

ERROR CONTEXT DebugContext_ {view: {…}, nodeIndex: 14, nodeDef: {…}, elDef: {…}, elView: {…}}
    View_UploadComponent_0  @   UploadComponent.html:54
    proxyClass  @   compiler.js:14645
    DebugContext_.logError  @   core.js:14981
    ErrorHandler.handleError    @   core.js:1506
    dispatchEvent   @   core.js:9948
    (anonymous) @   core.js:10569
    (anonymous) @   platform-browser.js:2628
    ZoneDelegate.invokeTask @   zone.js:421
    onInvokeTask    @   core.js:4724
    ZoneDelegate.invokeTask @   zone.js:420
    Zone.runTask    @   zone.js:188
    ZoneTask.invokeTask @   zone.js:496
    invokeTask  @   zone.js:1517
    globalZoneAwareCallback @   zone.js:1543

更多信息

上传组件显示正确，我可以选择文件
所有依赖项都是最新的（我做到了：npm update）
UploadModule 是我的 shared.module
HttpClient 由 app.module

以下请求已启动，但没有发生上述错误：

Request URL:http://localhost:9001/common/file/saveAvatar
Referrer Policy:no-referrer-when-downgrade
Provisional headers are shown
Access-Control-Request-Method:POST
Origin:http://localhost:4203
User-Agent:Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36

package.json

"dependencies": {
"@angular/animations": "^5.2.0",
"@angular/common": "^5.2.0",
"@angular/compiler": "^5.2.0",
"@angular/compiler-cli": "^5.2.0",
"@angular/core": "^5.2.0",
"@angular/forms": "^5.2.0",
"@angular/http": "^5.2.0",
"@angular/language-service": "^5.2.0",
"@angular/platform-browser": "^5.2.0",
"@angular/platform-browser-dynamic": "^5.2.0",
"@angular/router": "^5.2.0",
"@auth0/angular-jwt": "^1.0.0-beta.9",
"@fortawesome/fontawesome": "^1.1.2",
"@fortawesome/fontawesome-free-solid": "^5.0.4",
"@progress/kendo-angular-buttons": "^2.0.0",
"@progress/kendo-angular-dateinputs": "^1.4.2",
"@progress/kendo-angular-dialog": "^1.3.0",
"@progress/kendo-angular-dropdowns": "^1.5.0",
"@progress/kendo-angular-excel-export": "^1.0.5",
"@progress/kendo-angular-grid": "^1.6.5",
"@progress/kendo-angular-inputs": "^1.4.2",
"@progress/kendo-angular-intl": "^1.3.0",
"@progress/kendo-angular-l10n": "^1.0.5",
"@progress/kendo-angular-upload": "^2.1.0",
"@progress/kendo-data-query": "^1.1.2",
"@progress/kendo-drawing": "^1.4.0",
"@progress/kendo-theme-default": "^2.46.0",
"angular2-moment": "^1.7.1",
"angular2-toaster": "^4.0.1",
"angular2-tooltips": "^1.0.10",
"cldr-data": "^32.0.0",
"core-js": "^2.4.1",
"ng2-redux": "^5.1.2",
"redux": "^3.7.2",
"rxjs": "^5.5.2",
"tassign": "^1.0.0",
"zone.js": "^0.8.20"
},

请询问更多需要的信息。不知道还能写什么

Answer 1

回答我自己的问题：错误出在我的 HTTP 拦截器中。您必须像这样处理保存请求：

    ...
    if (req.url === `${backendUrl}/file/saveFile`) {
        headers = headers.set('Content-Type', 'multipart form-data');

        return next
            .handle(req)
            .catch((error) => {
                return this.handleError(error);
            });
    }
    ...

尝试使用 kendo-upload 和 Angular 上传文件时出错 5

Error while trying upload a file with kendo-upload and Angular 5

kendo-upload

kendo-ui-angular2

angular5