{"id":32660,"date":"2024-11-25T16:44:14","date_gmt":"2024-11-25T08:44:14","guid":{"rendered":"https:\/\/fwq.ai\/blog\/32660\/"},"modified":"2024-11-25T16:44:14","modified_gmt":"2024-11-25T08:44:14","slug":"angular-%e6%9c%8d%e5%8a%a1%ef%bc%9a%e5%88%9d%e5%ad%a6%e8%80%85%e7%bb%bc%e5%90%88%e6%8c%87%e5%8d%97","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/32660\/","title":{"rendered":"Angular \u670d\u52a1\uff1a\u521d\u5b66\u8005\u7efc\u5408\u6307\u5357"},"content":{"rendered":"

\u4f60\u597d\uff01\u6211\u5e0c\u671b\u60a8\u5df2\u7ecf\u9605\u8bfb\u4e86\u6211\u4eec\u6709\u5173 angular \u7ec4\u4ef6\u548c\u8def\u7531\u7684\u6559\u7a0b\u3002\u5728\u8fd9\u7bc7\u6587\u7ae0\u4e2d\uff0c\u6211\u4eec\u5c06\u7ee7\u7eed\u8ba8\u8bba angular \u4e2d\u7684\u53e6\u4e00\u4e2a\u6709\u8da3\u7684\u6982\u5ff5\uff1a\u670d\u52a1\u3002 <\/strong><\/p>\n

\u5982\u679c Angular \u7ec4\u4ef6\u662f\u6211\u4eec\u5e94\u7528\u7a0b\u5e8f\u7684\u8868\u793a\u5c42\uff0c\u90a3\u4e48\u4ec0\u4e48\u5c06\u8d1f\u8d23\u5b9e\u9645\u83b7\u53d6\u771f\u5b9e\u6570\u636e\u5e76\u6267\u884c\u4e1a\u52a1\u903b\u8f91\uff1f\u8fd9\u6b63\u662f Angular \u670d\u52a1\u7684\u7528\u6b66\u4e4b\u5730\u3002Angular \u670d\u52a1\u7684\u4f5c\u7528\u662f\u83b7\u53d6\u3001\u7ec4\u7ec7\u5e76\u6700\u7ec8\u8de8\u7ec4\u4ef6\u5171\u4eab\u6570\u636e\u3001\u6a21\u578b\u548c\u4e1a\u52a1\u903b\u8f91\u3002<\/p>\n

\u5728\u6df1\u5165\u4e86\u89e3 Angular \u670d\u52a1\u7684\u6280\u672f\u7ec6\u8282\u4e4b\u524d\uff0c\u8ba9\u6211\u4eec\u5148\u4e86\u89e3\u4e00\u4e0b\u5176\u529f\u80fd\u3002\u8fd9\u5c06\u5e2e\u52a9\u60a8\u4e86\u89e3\u4ee3\u7801\u7684\u54ea\u4e00\u90e8\u5206\u9700\u8981\u653e\u7f6e\u5728\u7ec4\u4ef6\u5185\uff0c\u4ee5\u53ca\u54ea\u4e00\u90e8\u5206\u9700\u8981\u653e\u7f6e\u5728 Angular \u670d\u52a1\u5185\u3002<\/p>\n

\u4ee5\u4e0b\u662f\u6709\u5173\u670d\u52a1\u7684\u4e00\u4e9b\u91cd\u8981\u4e8b\u5b9e\uff1a<\/p>\n

\u670d\u52a1\u662f\u4f7f\u7528 @Injectable \u88c5\u9970\u5668\u5b9a\u4e49\u7684\u3002\u8fd9\u544a\u8bc9 Angular \u8be5\u670d\u52a1\u53ef\u4ee5\u6ce8\u5165\u5230\u7ec4\u4ef6\u6216\u5176\u4ed6\u670d\u52a1\u4e2d\u3002\u7a0d\u540e\u6211\u4eec\u5c06\u8be6\u7ec6\u8ba8\u8bba\u6ce8\u5165\u670d\u52a1\u3002<\/p>\n

\u670d\u52a1\u662f\u4fdd\u5b58\u6240\u6709\u4e1a\u52a1\u903b\u8f91\u5e76\u8de8\u7ec4\u4ef6\u5171\u4eab\u7684\u5730\u65b9\u3002\u8fd9\u4f7f\u60a8\u7684\u5e94\u7528\u7a0b\u5e8f\u66f4\u5177\u53ef\u6269\u5c55\u6027\u548c\u53ef\u7ef4\u62a4\u6027\u3002\u901a\u5e38\uff0c\u670d\u52a1\u4e5f\u662f\u4e0e\u540e\u7aef\u4ea4\u4e92\u7684\u6b63\u786e\u4f4d\u7f6e\u3002\u4f8b\u5982\uff0c\u5982\u679c\u60a8\u9700\u8981\u8fdb\u884cAJAX\u8c03\u7528\uff0c\u53ef\u4ee5\u5728\u670d\u52a1\u5185\u90e8\u521b\u5efa\u5b8c\u6210\u8c03\u7528\u7684\u65b9\u6cd5\u3002<\/p>\n

\u670d\u52a1\u662f\u5355\u4f8b\u7c7b\u3002\u60a8\u7684 Angular \u5e94\u7528\u7a0b\u5e8f\u4e2d\u53ea\u4f1a\u8fd0\u884c\u7279\u5b9a\u670d\u52a1\u7684\u5355\u4e2a\u5b9e\u4f8b\u3002<\/p>\n

\u4ec0\u4e48\u662f\u670d\u52a1\uff1f<\/h2>\n

Angular \u4e2d\u7684\u670d\u52a1\u662f\u5728\u5e94\u7528\u7a0b\u5e8f\u7684\u751f\u547d\u5468\u671f\u4e2d\u4ec5\u5b9e\u4f8b\u5316\u4e00\u6b21\u7684\u5bf9\u8c61\u3002\u670d\u52a1\u63a5\u6536\u548c\u7ef4\u62a4\u7684\u6570\u636e\u53ef\u4ee5\u5728\u6574\u4e2a\u5e94\u7528\u7a0b\u5e8f\u4e2d\u4f7f\u7528\u3002\u8fd9\u610f\u5473\u7740\u7ec4\u4ef6\u53ef\u4ee5\u968f\u65f6\u4ece\u670d\u52a1\u83b7\u53d6\u6570\u636e\u3002 \u4f9d\u8d56\u6ce8\u5165<\/strong>\u7528\u4e8e\u5728\u7ec4\u4ef6\u5185\u90e8\u5f15\u5165\u670d\u52a1\u3002<\/p>\n

\u8ba9\u6211\u4eec\u5c1d\u8bd5\u4e86\u89e3\u5982\u4f55\u521b\u5efa\u670d\u52a1\u5e76\u5728 Angular \u7ec4\u4ef6\u4e2d\u4f7f\u7528\u5b83\u3002\u60a8\u53ef\u4ee5\u5728\u6211\u4eec\u7684 GitHub \u5b58\u50a8\u5e93\u4e2d\u627e\u5230\u8be5\u9879\u76ee\u7684\u5b8c\u6574\u6e90\u4ee3\u7801\u3002<\/p>\n

\u83b7\u5f97\u6e90\u4ee3\u7801\u540e\uff0c\u5bfc\u822a\u5230\u9879\u76ee\u76ee\u5f55\u5e76\u4f7f\u7528 npm install \u5b89\u88c5\u6240\u9700\u7684\u4f9d\u8d56\u9879\u3002\u5b89\u88c5\u4f9d\u8d56\u9879\u540e\uff0c\u901a\u8fc7\u952e\u5165\u4ee5\u4e0b\u547d\u4ee4\u542f\u52a8\u5e94\u7528\u7a0b\u5e8f\uff1a<\/p>\n

ng serve\n<\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
\u60a8\u5e94\u8be5\u8ba9\u5e94\u7528\u7a0b\u5e8f\u5728 https:\/\/localhost:4200\/. \u4e0a\u8fd0\u884c<\/p>\n
\u6211\u4eec\u9879\u76ee\u7684\u6574\u4f53\u6587\u4ef6\u5939\u7ed3\u6784\u5982\u4e0b\u3002<\/p>\n
src\n--app\n----components\n------employee.component.css\n------employee.component.html\n------employee.component.ts\n----services\n------employee.service.spec.ts\n------employee.service.ts\n------employeeDetails.service.ts\n--app.routing.module.ts\n--app.component.css\n--app.component.html\n--app.component.spec.ts\n--app.component.ts\n--app.module.ts\n--assets\n--index.html\n--tsconfig.json\n<\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
 1.<\/span>\u6784\u5efa\u670d\u52a1\u7684\u9aa8\u67b6<\/h2>\n
\u5728 Angular \u4e2d\u521b\u5efa\u670d\u52a1\u6709\u4e24\u79cd\u65b9\u6cd5\uff1a<\/p>\n
    \n
  1. \u5728\u9879\u76ee\u5185\u624b\u52a8\u521b\u5efa\u6587\u4ef6\u5939\u548c\u6587\u4ef6\u3002<\/li>\n
  2. \u4f7f\u7528 ng g service  \u547d\u4ee4\u81ea\u52a8\u521b\u5efa\u670d\u52a1\u3002\u4f7f\u7528\u6b64\u65b9\u6cd5\u65f6\uff0c\u60a8\u5c06\u5728\u6240\u9009\u76ee\u5f55\u4e2d\u81ea\u52a8\u83b7\u53d6 .service.ts<\/strong> \u548c .service.spec.ts<\/strong> \u6587\u4ef6\u3002  <\/li>\n<\/ol>\n
    ng g service components\/employee \n<\/pre>\n
      \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
     2.<\/span> \u521b\u5efa\u670d\u52a1<\/h2>\n
    \u73b0\u5728\uff0c.service.ts<\/strong> \u6587\u4ef6\u5df2\u5728\u60a8\u7684\u9879\u76ee\u7ed3\u6784\u4e2d\u521b\u5efa\uff0c\u662f\u65f6\u5019\u586b\u5145\u670d\u52a1\u7684\u5185\u5bb9\u4e86\u3002\u4e3a\u6b64\uff0c\u60a8\u5fc5\u987b\u51b3\u5b9a\u670d\u52a1\u9700\u8981\u505a\u4ec0\u4e48\u3002\u8bf7\u8bb0\u4f4f\uff0c\u60a8\u53ef\u4ee5\u62e5\u6709\u591a\u4e2a\u670d\u52a1\uff0c\u6bcf\u4e2a\u670d\u52a1\u90fd\u6267\u884c\u7279\u5b9a\u7684\u4e1a\u52a1\u64cd\u4f5c\u3002\u5728\u6211\u4eec\u7684\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u5c06\u4f7f\u7528 employee.service.ts<\/strong> \u5c06\u9759\u6001\u89d2\u8272\u5217\u8868\u8fd4\u56de\u7ed9\u4f7f\u7528\u5b83\u7684\u4efb\u4f55\u7ec4\u4ef6\u3002<\/p>\n
    \u5728employee.service.ts<\/strong>\u4e2d\u8f93\u5165\u4ee5\u4e0b\u4ee3\u7801\u3002<\/p>\n
    import { Injectable } from '@angular\/core';\n\n@Injectable({\n  providedIn: 'root',\n})\n\nexport class EmployeeService {\n  role = [\n    {'id':'1', 'type':'admin'},\n    {'id':'2', 'type':'engineer'},\n    {'id':'3', 'type':'sales'},\n    {'id':'4', 'type':'human_resources'}\n  ]\n    getRole(){\n    return this.role;\n  }\n}\n<\/pre>\n
      \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
    \u6b64\u670d\u52a1\u4ec5\u5411\u5e94\u7528\u7a0b\u5e8f\u8fd4\u56de\u89d2\u8272\u7684\u9759\u6001\u5217\u8868\u3002\u8ba9\u6211\u4eec\u9010\u884c\u89e3\u7801\u8be5\u670d\u52a1\u3002<\/p>\n
      \n
    1. \u6211\u4eec\u4ece @angular\/core \u5e93\u5bfc\u5165 Injectable \u3002\u8fd9\u4e00\u70b9\u81f3\u5173\u91cd\u8981\uff0c\u56e0\u4e3a\u6211\u4eec\u7684\u670d\u52a1\u5c06\u88ab\u4f7f\u7528\u6216\u6ce8\u5165\u5230\u7ec4\u4ef6\u4e2d\u3002 @Injectable \u6307\u4ee4\u5141\u8bb8\u6211\u4eec\u8bc6\u522b\u670d\u52a1\u3002<\/li>\n
    2. \u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u5e94\u7528 @Injectable \u88c5\u9970\u5668\u3002 @Injectable \u7684 providedIn \u5c5e\u6027\u6307\u5b9a\u6ce8\u5165\u5668\u7684\u53ef\u7528\u4f4d\u7f6e\u3002\u5927\u591a\u6570\u65f6\u5019\uff0croot \u88ab\u6307\u5b9a\u4e3a\u5b83\u7684\u503c\u3002\u8fd9\u610f\u5473\u7740\u53ef\u4ee5\u5728\u5e94\u7528\u7a0b\u5e8f\u7ea7\u522b\u6ce8\u5165\u670d\u52a1\u3002\u5176\u4ed6\u9009\u9879\u4e3a any\u3001platform\u3001null \u6216 Type  \u3002  <\/li>\n
    3. \u6211\u4eec\u521b\u5efa\u4e00\u4e2a\u7c7b\u7ec4\u4ef6\uff0c\u540d\u79f0\u4e3a EmployeeService\u3002\u8be5\u7c7b\u6709\u4e00\u4e2a\u65b9\u6cd5 getRole\uff0c\u5b83\u8fd4\u56de\u4e00\u4e2a\u9759\u6001\u5bf9\u8c61\u6570\u7ec4\u3002<\/li>\n<\/ol>\n
       3.<\/span>\u521b\u5efa\u7ec4\u4ef6<\/h2>\n
      \u5982\u524d\u6240\u8ff0\uff0cAngular \u4e2d\u7684\u670d\u52a1\u7528\u4e8e\u4fdd\u5b58\u5e94\u7528\u7a0b\u5e8f\u7684\u4e1a\u52a1\u903b\u8f91\u3002\u4e3a\u4e86\u5411\u67e5\u770b\u8005\u663e\u793a\u6570\u636e\uff0c\u6211\u4eec\u9700\u8981\u4e00\u4e2a\u8868\u793a\u5c42\u3002\u8fd9\u5c31\u662f\u4f20\u7edf\u7684\u57fa\u4e8e\u7c7b\u7684 Angular \u7ec4\u4ef6\u7684\u7528\u6b66\u4e4b\u5730\uff0c\u5b83\u662f\u4f7f\u7528\u88c5\u9970\u5668 @Component \u521b\u5efa\u7684\u3002<\/p>\n
      \u60a8\u53ef\u4ee5\u5728\u672c\u7cfb\u5217\u7684\u4e0a\u4e00\u7bc7\u6587\u7ae0\u4e2d\u4e86\u89e3\u6709\u5173 Angular \u7ec4\u4ef6\u7684\u66f4\u591a\u4fe1\u606f\u3002\u5b83\u5c06\u5e2e\u52a9\u60a8\u7406\u89e3 Angular \u7ec4\u4ef6\u5e76\u521b\u5efa\u60a8\u81ea\u5df1\u7684\u7ec4\u4ef6\u3002\u521b\u5efa\u6587\u4ef6 employee.component.ts<\/strong> \u5e76\u5411\u5176\u4e2d\u6dfb\u52a0\u4ee5\u4e0b\u4ee3\u7801\uff1a<\/p>\n
      import { Component, OnInit } from '@angular\/core';\nimport { EmployeeService } from '..\/services\/employee.service';\n\n@Component({\n  selector: 'employee',\n  templateUrl: '.\/employee.component.html'\n})\n\nexport class EmployeeComponent implements OnInit {\n\n    role: any;\n    \n    constructor(private employeeService: EmployeeService) {\t\t\n\t}\n    \n    ngOnInit(): void {\n        this.role = this.employeeService.getRole()\n    }\n \n}\n<\/pre>\n
        \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
      \u8ba9\u6211\u4eec\u5206\u89e3\u4e00\u4e0b\uff1a<\/p>\n
        \n
      1. \u5bfc\u5165 @Component \u88c5\u9970\u5668\u5e76\u8c03\u7528\u5b83\u3002\u6211\u4eec\u6307\u5b9a ’employee’ \u4f5c\u4e3a\u9009\u62e9\u5668\uff0c\u5e76\u63d0\u4f9b\u4e00\u4e2a\u6307\u5411\u63cf\u8ff0\u7ec4\u4ef6\u89c6\u56fe\u7684 HTML \u7684\u6a21\u677f URL\u3002<\/li>\n
      2. \u58f0\u660e\u7ec4\u4ef6\u7c7b\u5e76\u6307\u5b9a\u5b83\u5b9e\u73b0 OnInit\u3002\u56e0\u6b64\uff0c\u6211\u4eec\u53ef\u4ee5\u5b9a\u4e49\u4e00\u4e2a ngOnInit \u4e8b\u4ef6\u5904\u7406\u7a0b\u5e8f\uff0c\u8be5\u5904\u7406\u7a0b\u5e8f\u5c06\u5728\u521b\u5efa\u7ec4\u4ef6\u65f6\u8c03\u7528\u3002<\/li>\n
      3. \u4e3a\u4e86\u4f7f\u7528\u6211\u4eec\u7684\u670d\u52a1\uff0c\u5fc5\u987b\u5728\u6784\u9020\u51fd\u6570\u5185\u58f0\u660e\u5b83\u3002\u5728\u6211\u4eec\u7684\u4f8b\u5b50\u4e2d\uff0c\u60a8\u5c06\u5728\u6784\u9020\u51fd\u6570\u4e2d\u770b\u5230 private employeeService: EmployeeService \u3002\u901a\u8fc7\u6b64\u6b65\u9aa4\uff0c\u6211\u4eec\u5c06\u4f7f\u8be5\u670d\u52a1\u53ef\u4ee5\u8de8\u7ec4\u4ef6\u8bbf\u95ee\u3002<\/li>\n
      4. \u7531\u4e8e\u6211\u4eec\u7684\u76ee\u6807\u662f\u5728\u521b\u5efa\u5458\u5de5\u7ec4\u4ef6\u65f6\u52a0\u8f7d\u89d2\u8272\uff0c\u56e0\u6b64\u6211\u4eec\u5728 ngOnInit \u4e2d\u83b7\u53d6\u6570\u636e\u3002<\/li>\n<\/ol>\n
        \u8fd9\u53ef\u4ee5\u53d8\u5f97\u66f4\u7b80\u5355\u5417\uff1f\u7531\u4e8e\u8be5\u670d\u52a1\u662f\u4e00\u4e2a\u5355\u4f8b\u7c7b\uff0c\u56e0\u6b64\u53ef\u4ee5\u5728\u591a\u4e2a\u7ec4\u4ef6\u4e4b\u95f4\u91cd\u7528\uff0c\u800c\u4e0d\u4f1a\u9020\u6210\u4efb\u4f55\u6027\u80fd\u635f\u5931\u3002<\/p>\n
         4.<\/span>\u521b\u5efa\u89c6\u56fe<\/h2>\n
        \u73b0\u5728\u6211\u4eec\u7684\u7ec4\u4ef6\u4e2d\u6709\u6570\u636e\u4e86\uff0c\u8ba9\u6211\u4eec\u6784\u5efa\u4e00\u4e2a\u7b80\u5355\u7684 employee.component.html <\/strong>\u6587\u4ef6\u6765\u8fed\u4ee3\u89d2\u8272\u5e76\u663e\u793a\u5b83\u4eec\u3002\u4e0b\u9762\uff0c\u6211\u4eec\u4f7f\u7528 *ngFor \u6765\u8fed\u4ee3\u89d2\u8272\uff0c\u5e76\u4ec5\u5411\u7528\u6237\u663e\u793a\u7c7b\u578b\u3002<\/p>\n
        <h3>Data from employee.service<\/h3>\n<\/pre>\n
          \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
          \n
        • {{role.type}}<\/li>\n<\/ul>\n
           5.<\/span>\u8fd0\u884c\u9879\u76ee<\/h2>\n
          \u5728\u9879\u76ee\u542f\u52a8\u5e76\u8fd0\u884c\u4e4b\u524d\u6211\u4eec\u53ea\u5269\u4e0b\u4e00\u6b65\u4e86\u3002\u6211\u4eec\u9700\u8981\u786e\u4fdd employee.component.ts <\/strong> \u6587\u4ef6\u5305\u542b\u5728 @NgModule \u6307\u4ee4\u5185\u7684\u58f0\u660e\u5217\u8868\u4e2d\u3002<\/p>\n
          \u5982\u4e0b\u6240\u793a\uff0cEmployeeComponent \u5df2\u6dfb\u52a0\u5230 app.module.ts <\/strong>\u6587\u4ef6\u4e2d\u3002<\/p>\n
          \/\/app.module.ts\nimport { NgModule } from '@angular\/core';\nimport { BrowserModule } from '@angular\/platform-browser';\n\nimport { AppRoutingModule } from '.\/app-routing.module';\nimport { AppComponent } from '.\/app.component';\nimport { EmployeeComponent } from '.\/components\/employee.component';\n\n@NgModule({\n  declarations: [\n    AppComponent,\n    EmployeeComponent\n  ],\n  imports: [\n    BrowserModule,\n    AppRoutingModule\n  ],\n  providers: [],\n  bootstrap: [AppComponent]\n})\nexport class AppModule { }\n<\/pre>\n
            \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
          \u6709\u8da3\u7684\u662f\uff0c\u6211\u4eec\u5c1a\u672a\u5c06\u8be5\u670d\u52a1\u6dfb\u52a0\u5230\u6211\u4eec\u7684\u63d0\u4f9b\u5546\u5217\u8868\u4e2d\uff0c\u4f46\u6211\u4eec\u80fd\u591f\u6210\u529f\u4f7f\u7528\u8be5\u670d\u52a1\u3002\u4e3a\u4ec0\u4e48\uff1f\u56e0\u4e3a\u6211\u4eec\u5df2\u7ecf\u6307\u5b9a\u5728\u5e94\u7528\u7a0b\u5e8f\u7684\u6839\u7ea7\u522b\u63d0\u4f9b\u670d\u52a1\uff08\u5373\u4f7f\u7528 providedIn: ‘root’ \u53c2\u6570\uff09\u3002\u4f46\u662f\uff0c\u8bf7\u7ee7\u7eed\u9605\u8bfb\u4ee5\u4e86\u89e3\u6709\u5173\u6211\u4eec\u786e\u5b9e\u9700\u8981\u5728 @NgModule \u7684 providers \u6570\u7ec4\u4e2d\u63d0\u53ca\u670d\u52a1\u7684\u573a\u666f\u7684\u66f4\u591a\u4fe1\u606f\u3002<\/p>\n
          \u6b64\u5916\uff0c\u6211\u4eec\u8fd8\u9700\u8981\u5c06 employee \u5143\u7d20\u6dfb\u52a0\u5230 app.component.html<\/strong> \u6587\u4ef6\u4e2d\u3002<\/p>\n
          <h1>\n  Tutorial: Angular Services\n<\/h1>\n<employee><\/employee><router-outlet><\/router-outlet><\/pre>\n
            \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
          \u5982\u679c\u6211\u4eec\u5230\u76ee\u524d\u4e3a\u6b62\u8fd0\u884c\u6211\u4eec\u7684\u5e94\u7528\u7a0b\u5e8f\uff0c\u5b83\u5c06\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n
          \"Angular<\/p>\n
           6.<\/span>\u4ece\u670d\u52a1\u52a8\u6001\u83b7\u53d6\u6570\u636e<\/h2>\n
          \u73b0\u5728\uff0c\u6211\u4eec\u5c06\u83b7\u53d6\u7279\u5b9a\u4e8e employee.component.ts<\/strong> \u7684\u6570\u636e\u3002<\/p>\n
          \u8ba9\u6211\u4eec\u521b\u5efa\u4e00\u4e2a\u65b0\u670d\u52a1\u6765\u4ece API \u83b7\u53d6\u6570\u636e\u3002<\/p>\n
          import { Injectable } from '@angular\/core';\nimport { HttpClient } from '@angular\/common\/http';\n@Injectable()\nexport class EmployeDetailsService {\n    fetchEmployeeDetailsURL = 'https:\/\/reqres.in\/api\/users?page=2'\n    constructor(private http: HttpClient) { }\n    fetchEmployeeDetails = () =&gt; {\n        return this.http.get(this.fetchEmployeeDetailsURL);\n    }\n}\n<\/pre>\n
            \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
          \u73b0\u5728\uff0c\u8ba9\u6211\u4eec\u9010\u884c\u7406\u89e3\u6211\u4eec\u7684\u4ee3\u7801\u3002<\/p>\n
            \n
          1. \u7531\u4e8e\u6211\u4eec\u8981\u901a\u8fc7 AJAX \u8c03\u7528\u83b7\u53d6\u6570\u636e\uff0c\u56e0\u6b64\u5bfc\u5165 HttpClient \u975e\u5e38\u91cd\u8981\u3002\u5982\u679c\u60a8\u662f HttpClient \u7684\u65b0\u624b\uff0c\u60a8\u53ef\u4ee5\u5728\u672c\u7cfb\u5217\u7684\u53e6\u4e00\u7bc7\u6587\u7ae0\u4e2d\u4e86\u89e3\u66f4\u591a\u4fe1\u606f\u3002<\/li>\n
          2. \u5728\u6211\u4eec\u7684 EmployeeDetailsS\u200b\u200bervice \u4e2d\uff0c\u6211\u4eec\u6ca1\u6709\u6307\u5b9a provideIn \u53c2\u6570\u3002\u8fd9\u610f\u5473\u7740\u6211\u4eec\u9700\u8981\u6267\u884c\u989d\u5916\u7684\u6b65\u9aa4\u6765\u8ba9\u6574\u4e2a\u5e94\u7528\u7a0b\u5e8f\u4e86\u89e3\u6211\u4eec\u7684\u53ef\u6ce8\u5165\u670d\u52a1\u3002\u60a8\u5c06\u5728\u4e0b\u4e00\u6b65\u4e2d\u4e86\u89e3\u8fd9\u4e00\u70b9\u3002<\/li>\n
          3.  HttpClient \u672c\u8eab\u5c31\u662f\u4e00\u4e2a\u53ef\u6ce8\u5165\u670d\u52a1\u3002\u5728\u6784\u9020\u51fd\u6570\u4e2d\u58f0\u660e\u5b83\uff0c\u4ee5\u4fbf\u5c06\u5176\u6ce8\u5165\u5230\u7ec4\u4ef6\u4e2d\u3002\u5728 fetchEmployeeDetails \u65b9\u6cd5\u4e2d\uff0c\u6211\u4eec\u5c06\u4f7f\u7528 HttpClient.get \u65b9\u6cd5\u4ece URL \u83b7\u53d6\u6570\u636e\u3002<\/li>\n<\/ol>\n
             7.<\/span> \u5728 app.module<\/strong> \u4e2d\u6ce8\u518c\u670d\u52a1 <\/h2>\n
            \u4e0e\u6211\u4eec\u7684\u7b2c\u4e00\u4e2a\u670d\u52a1\u4e0d\u540c\uff0c\u6211\u4eec\u5728 app.module.ts<\/strong> \u4e2d\u6ce8\u518c EmployeeDetailsS\u200b\u200bervice \u81f3\u5173\u91cd\u8981\uff0c\u56e0\u4e3a\u6211\u4eec\u5c1a\u672a\u5728\u6839\u7ea7\u522b\u58f0\u660e\u53ef\u6ce8\u5165\u3002\u8fd9\u662f\u66f4\u65b0\u540e\u7684 app.module.ts<\/strong> \u6587\u4ef6\uff1a<\/p>\n
            import { NgModule } from '@angular\/core';\nimport { BrowserModule } from '@angular\/platform-browser';\nimport { HttpClientModule } from '@angular\/common\/http';\nimport { AppRoutingModule } from '.\/app-routing.module';\nimport { AppComponent } from '.\/app.component';\nimport { EmployeeComponent } from '.\/components\/employee.component';\nimport { EmployeDetailsService } from '.\/services\/employeeDetails.service';\n\n@NgModule({\n  declarations: [\n    AppComponent,\n    EmployeeComponent\n  ],\n  imports: [\n    BrowserModule,\n    AppRoutingModule,\n    HttpClientModule\n  ],\n  providers: [\n    EmployeDetailsService],\n  bootstrap: [AppComponent]\n})\nexport class AppModule { }\n<\/pre>\n
              \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
            \u5982\u679c\u60a8\u5bc6\u5207\u5173\u6ce8\uff0c\u60a8\u53ef\u80fd\u4f1a\u6ce8\u610f\u5230\u4e24\u4e2a\u91cd\u8981\u7684\u53d8\u5316\uff1a<\/p>\n
              \n
            1. \u5728\u6211\u4eec\u7684 app.module.ts \u6587\u4ef6\u4e2d\uff0c\u6211\u4eec\u9700\u8981\u5c06 EmployeDetailsS\u200b\u200bervice \u5305\u542b\u5728 Providers \u5217\u8868\u4e2d\u3002<\/li>\n
            2. \u6211\u4eec\u9700\u8981\u4ece @angular\/common\/http \u5bfc\u5165 HttpClientModule\u3002 HttpClientModule \u5fc5\u987b\u5305\u542b\u5728\u6211\u4eec\u7684 imports \u5217\u8868\u4e2d\u3002<\/li>\n<\/ol>\n
              \u5c31\u662f\u8fd9\u6837 – \u6211\u4eec\u73b0\u5728\u51c6\u5907\u5728\u7ec4\u4ef6\u4e2d\u4f7f\u7528 EmployeeDetailsS\u200b\u200bervice \u3002<\/p>\n
               8.<\/span>\u83b7\u53d6\u52a8\u6001\u6570\u636e<\/h2>\n
              \u4e3a\u4e86\u9002\u5e94\u65b0\u670d\u52a1\uff0c\u6211\u4eec\u5c06\u5bf9\u7ec4\u4ef6\u8fdb\u884c\u4e00\u4e9b\u66f4\u6539\u3002<\/p>\n
              \u6dfb\u52a0\u4e00\u4e2a\u6309\u94ae\u6765\u52a0\u8f7d\u6570\u636e<\/h3>\n
              \u9996\u5148\uff0c\u6211\u4eec\u5c06\u5728\u89c6\u56fe\u4e2d\u6dfb\u52a0\u4e00\u4e2a\u6309\u94ae\u3002\u5f53\u6211\u4eec\u5355\u51fb\u6b64\u6309\u94ae\u65f6\uff0c\u5c06\u901a\u8fc7 AJAX \u8c03\u7528\u52a0\u8f7d\u6570\u636e\u3002\u8fd9\u662f\u66f4\u65b0\u540e\u7684employee.component.html<\/strong>\u6587\u4ef6\uff1a<\/p>\n
              <h3>Data from employee.service<\/h3>\n<\/pre>\n
                \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
                \n
              • {{role.type}}<\/li>\n<\/ul>\n
                 Load Employee Details <\/p>\n
                  \n
                • {{employee.email}}<\/li>\n<\/ul>\n
                  \u8ba2\u9605Getter\u51fd\u6570<\/h3>\n
                  \u63a5\u4e0b\u6765\u8ba2\u9605EmployeDetailsS\u200b\u200bervice\u4e2d\u7684getter\u51fd\u6570\u3002\u4e3a\u6b64\uff0c\u6211\u4eec\u5c06 EmployeDetailsS\u200b\u200bervice \u6dfb\u52a0\u5230 employee.component.ts<\/strong> \u4e2d\u7684\u6784\u9020\u51fd\u6570\u4e2d\uff1a<\/p>\n
                  import { Component, OnInit } from '@angular\/core';\nimport { EmployeeService } from '..\/services\/employee.service';\nimport { EmployeDetailsService } from '..\/services\/employeeDetails.service';\n\n@Component({\n  selector: 'employee',\n  templateUrl: '.\/employee.component.html'\n})\n\nexport class EmployeeComponent implements OnInit {\n\n    roles: any;\n    employeeDetails: any;\n    constructor(private employeeService: EmployeeService,\n        private employeeDetailsService: EmployeDetailsService) {\t\t\n\t}\n    ngOnInit(): void {\n        this.roles = this.employeeService.getRole()\n    }\n\n    loadEmployeeDetails = () =&gt; {\n        this.employeeDetailsService.fetchEmployeeDetails()\n                                    .subscribe((response:any)=&gt;{\n                                        this.employeeDetails = response.data;\n                                    })\n    }\n \n}\n<\/pre>\n
                    \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
                  \u5b8c\u6210\u6b64\u66f4\u6539\u540e\uff0c\u5355\u51fb LoadEmployeeDetails \u6309\u94ae\uff0c\u6211\u4eec\u5c06\u770b\u5230\u4ee5\u4e0b\u89c6\u56fe\u3002<\/p>\n
                  \"Angular<\/p>\n
                  \u7ed3\u8bba<\/h2>\n
                  \u7ed9\u4f60\uff01\u6211\u4eec\u5df2\u7ecf\u9010\u6b65\u6784\u5efa\u4e86\u4e00\u4e2a\u53ef\u4ee5\u5904\u7406\u9759\u6001\u548c\u52a8\u6001\u6570\u636e\u7684 Angular \u670d\u52a1\u3002\u73b0\u5728\uff0c\u60a8\u5e94\u8be5\u80fd\u591f\u6784\u5efa\u81ea\u5df1\u7684 Angular \u670d\u52a1\u5e76\u4f7f\u7528\u5b83\u4eec\u901a\u8fc7 AJAX \u8c03\u7528\u83b7\u53d6\u6570\u636e\u3002\u60a8\u751a\u81f3\u53ef\u4ee5\u4ee5\u66f4\u53ef\u91cd\u7528\u7684\u65b9\u5f0f\u5b9e\u73b0\u4e1a\u52a1\u903b\u8f91\u3002<\/p>\n
                  \u4ee5\u4e0a\u5c31\u662fAngular \u670d\u52a1\uff1a\u521d\u5b66\u8005\u7efc\u5408\u6307\u5357\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
                  \u4f60\u597d\uff01\u6211\u5e0c\u671b\u60a8\u5df2\u7ecf\u9605\u8bfb\u4e86\u6211\u4eec\u6709\u5173 angular \u7ec4\u4ef6\u548c\u8def\u7531\u7684\u6559\u7a0b\u3002\u5728\u8fd9\u7bc7\u6587\u7ae0\u4e2d\uff0c\u6211\u4eec\u5c06\u7ee7\u7eed\u8ba8\u8bba angular \u4e2d\u7684\u53e6\u4e00\u4e2a\u6709\u8da3\u7684\u6982\u5ff5\uff1a\u670d\u52a1\u3002 \u5982\u679c Angular \u7ec4\u4ef6\u662f\u6211\u4eec\u5e94\u7528\u7a0b\u5e8f\u7684\u8868\u793a\u5c42\uff0c\u90a3\u4e48\u4ec0\u4e48\u5c06\u8d1f\u8d23\u5b9e\u9645\u83b7\u53d6\u771f\u5b9e\u6570\u636e\u5e76\u6267\u884c\u4e1a\u52a1\u903b\u8f91\uff1f\u8fd9\u6b63\u662f Angular \u670d\u52a1\u7684\u7528\u6b66\u4e4b\u5730\u3002Angular \u670d\u52a1\u7684\u4f5c\u7528\u662f\u83b7\u53d6\u3001\u7ec4\u7ec7\u5e76\u6700\u7ec8\u8de8\u7ec4\u4ef6\u5171\u4eab\u6570\u636e\u3001\u6a21\u578b\u548c\u4e1a\u52a1\u903b\u8f91\u3002 \u5728\u6df1\u5165\u4e86\u89e3 Angular \u670d\u52a1\u7684\u6280\u672f\u7ec6\u8282\u4e4b\u524d\uff0c\u8ba9\u6211\u4eec\u5148\u4e86\u89e3\u4e00\u4e0b\u5176\u529f\u80fd\u3002\u8fd9\u5c06\u5e2e\u52a9\u60a8\u4e86\u89e3\u4ee3\u7801\u7684\u54ea\u4e00\u90e8\u5206\u9700\u8981\u653e\u7f6e\u5728\u7ec4\u4ef6\u5185\uff0c\u4ee5\u53ca\u54ea\u4e00\u90e8\u5206\u9700\u8981\u653e\u7f6e\u5728 Angular \u670d\u52a1\u5185\u3002 \u4ee5\u4e0b\u662f\u6709\u5173\u670d\u52a1\u7684\u4e00\u4e9b\u91cd\u8981\u4e8b\u5b9e\uff1a \u670d\u52a1\u662f\u4f7f\u7528 @Injectable \u88c5\u9970\u5668\u5b9a\u4e49\u7684\u3002\u8fd9\u544a\u8bc9 Angular \u8be5\u670d\u52a1\u53ef\u4ee5\u6ce8\u5165\u5230\u7ec4\u4ef6\u6216\u5176\u4ed6\u670d\u52a1\u4e2d\u3002\u7a0d\u540e\u6211\u4eec\u5c06\u8be6\u7ec6\u8ba8\u8bba\u6ce8\u5165\u670d\u52a1\u3002 \u670d\u52a1\u662f\u4fdd\u5b58\u6240\u6709\u4e1a\u52a1\u903b\u8f91\u5e76\u8de8\u7ec4\u4ef6\u5171\u4eab\u7684\u5730\u65b9\u3002\u8fd9\u4f7f\u60a8\u7684\u5e94\u7528\u7a0b\u5e8f\u66f4\u5177\u53ef\u6269\u5c55\u6027\u548c\u53ef\u7ef4\u62a4\u6027\u3002\u901a\u5e38\uff0c\u670d\u52a1\u4e5f\u662f\u4e0e\u540e\u7aef\u4ea4\u4e92\u7684\u6b63\u786e\u4f4d\u7f6e\u3002\u4f8b\u5982\uff0c\u5982\u679c\u60a8\u9700\u8981\u8fdb\u884cAJAX\u8c03\u7528\uff0c\u53ef\u4ee5\u5728\u670d\u52a1\u5185\u90e8\u521b\u5efa\u5b8c\u6210\u8c03\u7528\u7684\u65b9\u6cd5\u3002 \u670d\u52a1\u662f\u5355\u4f8b\u7c7b\u3002\u60a8\u7684 Angular \u5e94\u7528\u7a0b\u5e8f\u4e2d\u53ea\u4f1a\u8fd0\u884c\u7279\u5b9a\u670d\u52a1\u7684\u5355\u4e2a\u5b9e\u4f8b\u3002 \u4ec0\u4e48\u662f\u670d\u52a1\uff1f Angular 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\u5b89\u88c5\u6240\u9700\u7684\u4f9d\u8d56\u9879\u3002\u5b89\u88c5\u4f9d\u8d56\u9879\u540e\uff0c\u901a\u8fc7\u952e\u5165\u4ee5\u4e0b\u547d\u4ee4\u542f\u52a8\u5e94\u7528\u7a0b\u5e8f\uff1a ng serve \u767b\u5f55\u540e\u590d\u5236 \u60a8\u5e94\u8be5\u8ba9\u5e94\u7528\u7a0b\u5e8f\u5728 https:\/\/localhost:4200\/. \u4e0a\u8fd0\u884c \u6211\u4eec\u9879\u76ee\u7684\u6574\u4f53\u6587\u4ef6\u5939\u7ed3\u6784\u5982\u4e0b\u3002 src –app —-components ——employee.component.css ——employee.component.html ——employee.component.ts —-services ——employee.service.spec.ts ——employee.service.ts 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