微信小程序后端Java接口开发的详细步骤

<dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

@RestController
public class HelloWorldController {
    @GetMapping("/helloWorld")
    public String helloWorld(Integer id){
        return "helloworld"+id;
    }
}

server:
  port: 80
  servlet:
    context-path: /
  tomcat:
    uri-encoding: utf-8

 /**
     * 页面的初始数据
     */
    data: {
        result:'请求后台中.....'
    },

    /**
     * 生命周期函数--监听页面加载
     */
    onLoad: function (options) {
        var that=this;
        this.getData(that);
    },
    getData(that){
        wx.request({
          url: 'http://localhost:8080/helloWorld',
          method:'GET',
          data:{
              id:666
          },
          header:{
              'content-type':'application/json'  //默认值
          },
          success(res){
              console.log(res.data);
              console.log(that);
              that.setData({
                result:res.data
              })
          }
        })
    },

<text>后端返回的数据：{{result}}</text>