小程序与后端Java接口交互实现HelloWorld入门

package com.java1234.controller;

import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;


@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

// pages/helloWorld.js
Page({

  
  data: {
    result:"请求后台中..."
  },

  
  onLoad: function (options) {
    var that=this;
   this.getData(that);
  },

  getData(that){
    wx.request({
      url: 'http://localhost/helloWorld',
      method:"GET",
      data:{
        id:100
      },
      header: {
        'content-type': 'application/json' // 默认值
      },
      success(res){

        console.log(res.data);
        console.log(that)
        that.setData({
          result:res.data
        })
      }
    })
  },


  
  onReady: function () {

  },

  
  onShow: function () {

  },

  
  onHide: function () {

  },

  
  onUnload: function () {

  },

  
  onPullDownRefresh: function () {

  },

  
  onReachBottom: function () {

  },

  
  onShareAppMessage: function () {

  }
})

<!--pages/helloWorld.wxml-->
<text>返回值:{{result}}</text>