相关疑难解决方法(0)

我已经travis-ci与我的GitHub帐户集成(https://github.com/pradeep0601/Angular5-Router-App).

当我将@angular/cli版本从1.7.4 更新到6.0.0-rc.3时,构建开始失败并出现错误:

Local workspace file ('angular.json') could not be found.
Error: Local workspace file ('angular.json') could not be found.
    at WorkspaceLoader._getProjectWorkspaceFilePath (/home/travis/build/pradeep0601/Angular5-Router-App/node_modules/@angular/cli/models/workspace-loader.js:37:19)
    at WorkspaceLoader.loadWorkspace (/home/travis/build/pradeep0601/Angular5-Router-App/node_modules/@angular/cli/models/workspace-loader.js:24:21)
    at TestCommand._loadWorkspaceAndArchitect (/home/travis/build/pradeep0601/Angular5-Router-App/node_modules/@angular/cli/models/architect-command.js:177:32)
    at TestCommand.<anonymous> (/home/travis/build/pradeep0601/Angular5-Router-App/node_modules/@angular/cli/models/architect-command.js:45:25)
    at Generator.next (<anonymous>)
    at /home/travis/build/pradeep0601/Angular5-Router-App/node_modules/@angular/cli/models/architect-command.js:7:71
    at new Promise (<anonymous>)
    at __awaiter (/home/travis/build/pradeep0601/Angular5-Router-App/node_modules/@angular/cli/models/architect-command.js:3:12)
    at TestCommand.initialize (/home/travis/build/pradeep0601/Angular5-Router-App/node_modules/@angular/cli/models/architect-command.js:44:16)
    at /home/travis/build/pradeep0601/Angular5-Router-App/node_modules/@angular/cli/models/command-runner.js:100:23

package.json片段以更好地了解运行环境:

    "@angular/cli": "6.0.0-rc.3",
    "@angular/compiler-cli": "^5.2.0",
    "@angular/language-service": "^5.2.0",
    "@types/jasmine": "~2.8.3",
    "@types/jasminewd2": "~2.0.2",

我的项目角度有问题，但我不知道问题出在哪里。我想在我的项目中添加一项服务，因为我像这样定义了该服务

import {Injectable} from "@angular/core";
import {Http} from "@angular/http";

@Injectable

export class ContactService{

constructor(public http: Http){

}
  getContacts(){
     return this.http.get("http://localhost:8080/findPersons? 
      mc=wa&page=1&size=6").map(resp => resp.json());
}
}

在我的 IDE 控制台中，我在 src/contact.service/contacts.service.ts(4,1) 中出现此错误：错误 TS1238：作为表达式调用时无法解析类装饰器的签名。

我也有同样的错误

有谁可以帮助我并谢谢你:)