微信小程序与Java后端接口交互

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.8.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
        <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
<!--            <scope>test</scope>-->
        </dependency>
    </dependencies>

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

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

/**
 * @Author: Forward Seen
 * @CreateTime: 2022/04/22 17:10
 * @Description: 微信小程序请求接口
 */
@RestController
public class HelloWeXin {

    @RequestMapping("/getMessage")
    public String getMessage(Integer userId) {
        return "Hello,微信用户" + userId + "!";
    }
}

<!--pages/hello/helloworld.wxml-->
<text>后端返回的数据：{{message}}</text>

// pages/hello/helloworld.js
Page({
  /**
   * 页面的初始数据
   */
  data: {
    message: "请求中。。。",
  },

  getData() {
    const that = this
    wx.request({
      url: 'http://localhost/getMessage',
      data: {
        userId: 666
      },
      method: 'GET',
      success(res) {
        console.log("请求状态：" + res.statusCode)
        console.log(res.data)
        that.setData({
          message: res.data
        })
      }
    })
  },

  /**
   * 生命周期函数--监听页面加载
   */
  onLoad: function (options) {
    this.getData()
  },

})