摘要：配置在項目根目錄下創建文件代表后臺項目路徑指明訪問地址修改為分割線用啟動項目后端接口訪問用自己測試通過

1.配置：在angular項目根目錄下創建：proxy.config.json
proxy.config.json文件：

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

"/"：代表后臺項目路徑
"target":"http://127.0.0.1:8080"  指明訪問地址

2.修改package.json 為

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

-----------------------------------------分割線----------------------------------------------
用 ng serve --proxy-config proxy.config.json 啟動angualr項目

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訪問：

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

自己測試通過；