小编Mee*_*mfp的帖子

我有一个ASP.NET Core 2.0/Angular模板应用程序.一切正常,直到我尝试发布.我收到以下错误:

in ./ClientApp/boot.browser.ts
Module parse failed: E:\rootfolder\ClientApp\boot.browser.ts Unexpected token (14:19)
You may need an appropriate loader to handle this file type.
|         const oldRootElem = document.querySelector('app');
|         const newRootElem = document.createElement('app');
|         oldRootElem!.parentNode!.insertBefore(newRootElem, oldRootElem);
|         modulePromise.then(appModule => appModule.destroy());
|     });
 @ multi event-source-polyfill webpack-hot-middleware/client?path=__webpack_hmr&dynamicPublicPath=true ./ClientApp/boot.browser.ts

到目前为止,我已经完成了通常的谷歌搜索,没有运气.知道我应该在哪里看？这是一个使用VS 2017生成的角度模板的ASP.NET CORE 2.0应用程序.我在下面发布了package.json文件.我得到了相同的结果,我明确地调用了"donet publish"命令或者在VS 2017中按下发布按钮.

 {  
  "name": "MyApp",
  "private": true,
  "version": "0.0.0",
  "scripts": {
    "test": "karma start ClientApp/test/karma.conf.js"
  },
  "dependencies": {
    "@angular/animations": "^4.4.4",
    "@angular/common": "^4.4.4",
    "@angular/compiler": "^4.4.4",
    "@angular/compiler-cli": "^4.4.4",
    "@angular/core": "^4.4.4",
    "@angular/forms": …

我有以下2种方法可以使用泛型在一种方法中压缩.我试过的东西无法编译.有人能让我知道如何做到这一点？我需要检查表AgeLengths的2个不同字段是否至少有一个值.Str_table与AgeLengths有一对多的关系.

public static bool HasMeanWeight(int id)
{
    MyDataContext dc = new MyDataContext ();
    return  (from s in dc.Str_table 
             where s.SId == id 
             select s.AgeLengths
             .Where(a => a.MeanWeight != null ).Any() == true
            ).FirstOrDefault();
}

public static bool HasNumbersData(int id)
{
    MyDataContext dc = new MyDataContext ();
    return (from s in dc.Str_table 
            where s.sId == id 
            select s.AgeLengths
            .Where(a => a.Numbers  != null).Any() == true
           ).FirstOrDefault();
}

在此先感谢B.

我有一个列表int?,可以有3个不同的值:null,1和2.我想知道哪些在我的列表中出现最多.为了按价值对它们进行分组,我尝试使用:

MyCollection.ToLookup(r => r)

如何获得最多出现的值？

我正在尝试从表中检索一些信息,如下所示:

//Fish table: fishid(int32), SpeciesName(nvarchar(50)),age(int?), weight(int?)   

 (from f in Fish 
  where f.SpeciesName=="COD" || f.SpeciesName=="Salmon"
  select f
 ).GroupBy(g=>g.SpeciesName)
  .Select(s= > new 
   { 
      Species=s.Key, 
      Age= (from age_count in Fish where age_count.SpeciesName== s.key && age_count.age!=null  select age_count).Count(),
      Weight= (from Weight_count in Fish where Weight_count.SpeciesName== s.key && Weight_count.Weight!=null  select weight_count).Count()
   };

现在,虽然这是有效的,但我认为必须有更好的方法.有人可以建议更好的代码吗？

谢谢

我有角度JWT令牌的问题,它可以在Postman的api上运行,但不能从角度调用中运行.请求详情如下:

我复制了响应中显示的令牌,并通过Postman生成请求.

知道为什么这个令牌在从角度服务发送时可能无效？

邮差结果如下:

这是生成令牌角边>的代码

    import { Injectable } from '@angular/core';

    import {
      HttpRequest,
      HttpHandler,
      HttpEvent,
      HttpInterceptor} from '@angular/common/http';
    //import { AuthService } from './auth/auth.service';
    import { Observable } from 'rxjs/Observable';
    import { Http } from "@angular/http/http";
    import { AuthService } from "./auth.service";
    import { HttpClient } from "@angular/common/http";
    @Injectable()
    export class TokenInterceptor implements HttpInterceptor {
      constructor(public auth: AuthService) { }
      intercept(request: HttpRequest<any>, next: HttpHandler): Observable<HttpEvent<any>> {

        request = request.clone({
          setHeaders: {
            Authorization: `Bearer ${this.auth.getToken()}`
          }
        });
        return next.handle(request);
      } …