[英]Angular application does not start under dotnet core / IIS
我在 Visual Studio Professional 2017 Aspnet Core 下有一個 angular 8 應用程序。 如果我使用ng serve （或npm start ）通過 angular cli 運行應用程序，它運行良好，我可以訪問該應用程序。 但是，如果我嘗試在帶有 IIS 的 Visual Studio 上通過調試啟動它，它永遠不會啟動。 我得到的唯一錯誤是 {"error":"Angular CLI 進程沒有在 XXX 秒的超時時間內開始偵聽請求。檢查日志輸出以獲取錯誤信息。"}
我寫了 XXX 秒，因為它與超時無關，應用程序永遠不會啟動我設置的任何超時。 我將 angular 核心包更新為最新，將 Visual Studio 2017 更新為最新，刪除了 dist 文件夾，刪除了節點模塊，基本上嘗試了我在互聯網上看到的所有內容。
我的核心版本是：2.2.101
我以管理員身份運行 Visual Studio。
相同的代碼在我同事的 PC 上運行良好。
這是我的 Startup.cs
app.UseSpa(spa =>
{
// To learn more about options for serving an Angular SPA from ASP.NET Core,
// see https://go.microsoft.com/fwlink/?linkid=864501
spa.Options.SourcePath = "ClientApp";
if (env.IsDevelopment())
{
spa.Options.StartupTimeout = new TimeSpan(0, 0, 200);
spa.UseAngularCliServer(npmScript: "start");
}
});
這是我的 package.json
{
"name": "ABCXYZ..",
"version": "0.0.0",
"scripts": {
"ng": "ng",
"start": "ng serve",
"build": "ng build",
"build:ssr": "ng run Abcxyz:server:dev",
"test": "ng test",
"lint": "ng lint",
"e2e": "ng e2e",
"debug": "ng serve --watch"
},
"private": true,
"dependencies": {
"@angular/animations": "8.2.14",
"@angular/common": "8.2.14",
"@angular/compiler": "8.2.14",
"@angular/core": "8.2.14",
"@angular/forms": "8.2.14",
"@angular/http": "7.2.15",
"@angular/platform-browser": "8.2.14",
"@angular/platform-browser-dynamic": "8.2.14",
"@angular/platform-server": "8.2.14",
"@angular/router": "8.2.14",
"@ng-bootstrap/ng-bootstrap": "^5.1.4",
"@nguniversal/module-map-ngfactory-loader": "8.2.6",
"adal-angular": "^1.0.17",
"adal-angular4": "^4.0.9",
"aspnet-prerendering": "^3.0.1",
"bootstrap": "^4.1.3",
"core-js": "^2.5.7",
"font-awesome": "^4.7.0",
"jquery": "3.4.1",
"ngx-toastr": "^11.2.1",
"popper.js": "^1.14.3",
"primeng": "^9.0.0-rc.1",
"rxjs": "^6.0.0",
"tslib": "^1.9.0",
"zone.js": "^0.10.2"
},
"devDependencies": {
"@angular-devkit/build-angular": "^0.803.21",
"@angular/cli": "~8.3.21",
"@angular/compiler-cli": "^8.2.14",
"@angular/language-service": "^8.2.14",
"@types/jasmine": "~3.5.0",
"@types/jasminewd2": "~2.0.8",
"@types/node": "~13.1.1",
"codelyzer": "~5.2.1",
"jasmine-core": "~3.5.0",
"jasmine-spec-reporter": "~4.2.1",
"karma": "^4.4.1",
"karma-chrome-launcher": "~3.1.0",
"karma-coverage-istanbul-reporter": "~2.1.1",
"karma-jasmine": "~2.0.1",
"karma-jasmine-html-reporter": "^1.5.1",
"typescript": "3.5.3"
},
"optionalDependencies": {
"node-sass": "^4.9.3",
"protractor": "~5.4.0",
"ts-node": "~5.0.1",
"tslint": "~5.9.1"
}
}
這是我的 dotnet 信息。
Runtime Environment:
OS Name: Windows
OS Version: 10.0.17763
OS Platform: Windows
RID: win10-x64
Base Path: C:\Program Files\dotnet\sdk\2.2.101\
Host (useful for support):
Version: 2.2.0
Commit: 1249f08fed
.NET Core SDKs installed:
2.1.202 [C:\Program Files\dotnet\sdk]
2.1.403 [C:\Program Files\dotnet\sdk]
2.1.502 [C:\Program Files\dotnet\sdk]
2.1.509 [C:\Program Files\dotnet\sdk]
2.2.101 [C:\Program Files\dotnet\sdk]
.NET Core runtimes installed:
Microsoft.AspNetCore.All 2.1.5 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
Microsoft.AspNetCore.All 2.1.6 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
Microsoft.AspNetCore.All 2.1.13 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
Microsoft.AspNetCore.All 2.2.0 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
Microsoft.AspNetCore.App 2.1.5 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 2.1.6 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 2.1.13 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 2.2.0 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.NETCore.App 2.0.9 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 2.1.5 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 2.1.6 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 2.1.13 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 2.2.0 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
同樣，如果我直接從 angular cli 運行相同的代碼，它工作正常。
任何幫助或指向正確的方向都非常感謝。 謝謝！
該問題看起來像是 Visual Studio 如何在調試模式下處理 Angular 服務器啟動的錯誤：
app.UseSpa(spa =>
{
// To learn more about options for serving an Angular SPA from ASP.NET Core,
// see https://go.microsoft.com/fwlink/?linkid=864501
spa.Options.SourcePath = "ClientApp";
if (env.IsDevelopment())
{
spa.UseAngularCliServer(npmScript: "start");
}
});
在開發模式下，Startup 嘗試自行在隨機端口上啟動 ng 服務器。 然后出現問題，重定向到 ng 服務器不起作用。
到目前為止，我發現的最佳解決方案是：
像這樣：
app.UseSpa(spa =>
{
// To learn more about options for serving an Angular SPA from ASP.NET Core,
// see https://go.microsoft.com/fwlink/?linkid=864501
spa.Options.SourcePath = "ClientApp";
if (env.IsDevelopment())
{
spa.UseProxyToSpaDevelopmentServer("http://localhost:4200");
}
});
此解決方法在 100% 的情況下都有效。
主要缺點是您失去了 1 按鈕調試啟動。
優點是：
繼續@Terenzio Berni的回答，
app.UseSpa(spa =>
{
spa.Options.SourcePath = "ClientApp";
if (env.IsDevelopment())
{
string strCmdText = @"/K cd ""{Location Of Angular App}"" & npm start";
System.Diagnostics.Process.Start("CMD.exe", strCmdText);
Thread.Sleep(7000);
spa.UseProxyToSpaDevelopmentServer("http://localhost:4200");
}
});
應該有助於避免需要手動啟動角度項目。 調整 sleep 參數，讓 angular 有足夠的時間啟動和運行。 這確實會使調試輸出變得有點模糊，因此啟動第二個命令提示符可能是一個更好的主意。
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