我在前端应用程序中使用 Angular 7，在后端应用程序中使用 CakePHP。单击按钮后，应在新选项卡中打开 pdf 文件。当我试图打开它时，它没有打开 pdf 文件（url：“http://localhost/api/report/1234.pdf”），而是抛出错误消息 - “Missing controller”。浏览器似乎无法检测到 pdf 文件
请在下面找到 package.json 文件
{
“名称”：“xyz”， “版本”：“0.0.0”， “脚本”：{ “吴”：“吴”， “开始”：“服务”， “测试”：“NG测试”， “林特”：“吴林特”， “e2e”：“ng e2e” }, “私人”：是的， “依赖”：{ "@angular/animations": "^7.2.16", "@angular/cdk": "~7.3.7", "@angular/common": "~7.2.0", "@angular/编译器": "~7.2.0", "@angular/core": "~7.2.0", "@angular/forms": "~7.2.0", "@angular/material": "^7.3.7", "@angular/platform-browser": "~7.2.0", "@angular/platform-browser-dynamic": "~7.2.0", "@angular/router": "~7.2.0", "@cds/core": "^5.6.4", "@ckeditor/ckeditor5-angular": "^1.1.0", "@ckeditor/ckeditor5-build-classic": "^12.4.0", "@clr/angular": "^1.1.2", "@clr/icons": "^1.1.2", "@clr/ui": "^1.1.2", "@fullcalendar/angular": "^4.2.1", "@fullcalendar/core": "^4.2.0", "@fullcalendar/daygrid": "^4.2.0", "@fullcalendar/interaction": "^4.2.0", "@fullcalendar/resource-timegrid": "^4.2.0", "@fullcalendar/timegrid": "^4.2.0", "@ng-select/ng-select": "^2.20.5", "@webcomponents/webcomponentsjs": "^2.6.0", “angular-ng-自动完成”：“^1.1.14”， "blueimp-canvas-to-blob": "^3.17.0", “核心 js”：“^2.5.4”， “文件保护程序”：“^2.0.2”， "hammerjs": "^2.0.8", “log4js”：“^6.3.0”， "ng-http-loader": "^5.1.0", "ng-multiselect-dropdown": "^0.2.4", "ng2-image-compress": "^7.0.7", "ng2-img-max": "^2.1.18", "ng2-pdf-viewer": "~6.4.1", "ngx-filter-pipe": "^2.1.2", “ngx-分页”：“^4.1.0”， "ngx-select-ex": "^7.0.1", “ngx-toastr”：“^10.2.0”， “rxjs”：“~6.3.3”， "rxjs-compat": "^6.4.0", "tslib": "^1.9.0", “zone.js”：“~0.8.26” }, “devDependencies”：{ "@angular-devkit/build-angular": "~0.13.0", "@angular/cli": "~7.3.8", "@angular/compiler-cli": "~7.2.0", "@angular/language-service": "~7.2.0", "@types/茉莉花": "~2.8.8", "@types/jasminewd2": "~2.0.3", "@types/node": "~8.9.4", “codelyzer”：“〜4.5.0”， “茉莉花核心”：“〜2.99.1”， "jasmine-spec-reporter": "~4.2.1", “业力”：“〜4.0.0”， “业力铬发射器”：“〜2.2.0”， “业力报道-伊斯坦布尔记者”：“~2.0.1”， “业力茉莉花”：“~1.1.2”， "karma-jasmine-html-reporter": "^0.2.2", “节点萨斯”：“^ 7.0.1”， “量角器”：“~5.4.0”， “ts-节点”：“~7.0.0”， “tslint”：“~5.11.0”， “打字稿”：“〜3.2.2”， “网络包”：“^4.29.0” } }