angular4 跨域访问

摘要：配置在项目根目录下创建文件代表后台项目路径指明访问地址修改为分割线用启动项目后端接口访问用自己测试通过

1.配置：在angular项目根目录下创建：proxy.config.json
proxy.config.json文件：

{
  "/":{
    "target":"http://127.0.0.1:8080"
  }
}

"/"：代表后台项目路径
"target":"http://127.0.0.1:8080"  指明访问地址

2.修改package.json 为

"scripts": {
    "ng": "ng",
    "start": "ng serve  --proxy-config proxy.config.json",
    "build": "ng build",
    "test": "ng test",
    "lint": "ng lint",
    "e2e": "ng e2e"
  }

-----------------------------------------分割线----------------------------------------------
用 ng serve --proxy-config proxy.config.json 启动angualr项目

3.后端springboot接口：

@RestController
@RequestMapping("/test")
public class TestController {
    @Autowired
    private UserService userService;

    @GetMapping("/getUsers")
    public String getUsers(){
        return ""{"aa":"11"}"";
    }
} 

4.angular访问：

import { HttpClient } from "@angular/common/http";
// 用HttpClient
this.http.get("/test/getUsers").subscribe(data => {
  console.log(data);
}); 

自己测试通过；