【微信小程序独立开发 5】后端搭建联调-编程知识

前言：上节我们完成了个人信息页的编写，本节完成将个人信息发给后端，并由后端存储

创建Spring Boot项目

配置maven仓库

使用自己下载的maven版本

添加pom文件

  <dependencies><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-devtools</artifactId><scope>runtime</scope><optional>true</optional></dependency><dependency><groupId>org.projectlombok</groupId><artifactId>lombok</artifactId><optional>true</optional></dependency><dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId><scope>runtime</scope><version>5.1.47</version></dependency><!-- 连接池 --><dependency><groupId>com.alibaba</groupId><artifactId>druid</artifactId><version>1.1.17</version></dependency><!-- mybatis-plus --><dependency><groupId>com.baomidou</groupId><artifactId>mybatis-plus-boot-starter</artifactId><version>3.2.0</version></dependency><!-- 添加Httpclient支持 --><dependency><groupId>org.apache.httpcomponents</groupId><artifactId>httpclient</artifactId><version>4.5.13</version></dependency><dependency><groupId>com.alibaba</groupId><artifactId>fastjson</artifactId><version>1.2.79</version></dependency><!-- JWT --><!-- JWT --><!-- https://mvnrepository.com/artifact/com.auth0/java-jwt --><dependency><groupId>com.auth0</groupId><artifactId>java-jwt</artifactId><version>4.2.2</version></dependency><dependency><groupId>io.jsonwebtoken</groupId><artifactId>jjwt</artifactId><version>0.7.0</version></dependency><dependency><groupId>jdom</groupId><artifactId>jdom</artifactId><version>1.0</version></dependency><dependency><groupId>dom4j</groupId><artifactId>dom4j</artifactId><version>1.1</version></dependency><dependency><groupId>commons-io</groupId><artifactId>commons-io</artifactId><version>2.5</version></dependency><dependency><groupId>junit</groupId><artifactId>junit</artifactId><scope>test</scope></dependency><dependency><groupId>org.junit.jupiter</groupId><artifactId>junit-jupiter</artifactId><scope>test</scope></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId></dependency></dependencies>

注：如果依赖引入错误，可参照以下办法进行处理

Idea Maven 项目Dependency not found 问题 - 知乎

apply后刷新maven

配置成功！

配置数据库

连接mysql数据库并新建数据库petRecord

创建表

CREATE TABLE `wx_user` (`id` int NOT NULL AUTO_INCREMENT COMMENT '主键',`nick_name` varchar(20) DEFAULT NULL COMMENT '昵称',`avatar_url` varchar(50) DEFAULT NULL COMMENT '头像地址',`birthday` datetime DEFAULT NULL COMMENT '生日',`sex` varchar(10) DEFAULT NULL COMMENT '性别',`region` varchar(20) DEFAULT NULL COMMENT '地区',`phone_number` varchar(20) DEFAULT NULL COMMENT '电话号码',PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci;

后端配置数据库连接

application.yaml

# 应用服务 WEB 访问端口
server:port: 8080servlet:context-path: /
spring:datasource:driver-class-name: com.mysql.jdbc.Drivertype: com.alibaba.druid.pool.DruidDataSourceurl: jdbc:mysql://localhost:3306/petRecord?serverTimezone=Asia/Shanghaiusername: rootpassword: 123456mybatis-plus:global-config:db-config:id-type: auto #id生成规则：数据库id自增configuration:map-underscore-to-camel-case: false # 开启驼峰功能auto-mapping-behavior: full # 自动映射任何复杂的结果log-impl: org.apache.ibatis.logging.stdout.StdOutImplmapper-locations: classpath:mybatis/mapper/*.xml

创建项目目录结构

创建返回工具类到entity中

package com.petrecord.petrecord.entity;import java.util.HashMap;
import java.util.Map;/*** 页面响应entity*/
public class R extends HashMap<String, Object> {private static final long serialVersionUID = 1L;public R() {put("code", 0);}public static R error() {return error(500, "未知异常，请联系管理员");}public static R error(String msg) {return error(500, msg);}public static R error(int code, String msg) {R r = new R();r.put("code", code);r.put("msg", msg);return r;}public static R ok(String msg) {R r = new R();r.put("msg", msg);return r;}public static R ok(Map<String, Object> map) {R r = new R();r.putAll(map);return r;}public static R ok() {return new R();}public R put(String key, Object value) {super.put(key, value);return this;}
}

创建用户实体类

package com.petrecord.petrecord.entity;import lombok.Getter;
import lombok.Setter;
import org.springframework.format.annotation.DateTimeFormat;import java.util.Date;/*** 微信用户*/
@Getter
@Setter
public class WxUser {/** 主键 */private int id;/** 昵称 */private String nickName;/** 头像 */private String avatarUrl;/** 生日 */@DateTimeFormat(pattern="yyyy-MM-dd")private Date birthday;/** 性别 */private String sex;/** 地区 */private String region;/** 手机号 */private String phoneNumber;
}

创建视图层

package com.petrecord.petrecord.controller;import com.petrecord.petrecord.entity.R;
import com.petrecord.petrecord.entity.WxUser;
import com.petrecord.petrecord.service.WxUserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;/*** 微信用户视图*/
@RestController
@RequestMapping("/wxUser")
public class WxUserController {@Autowiredprivate WxUserService wxUserService;/*** 保存用户* @param wxUser* @return*/@PostMapping("/save")public R save(@RequestBody WxUser wxUser){System.out.println(wxUser);return wxUserService.save(wxUser);}
}

创建Service

package com.petrecord.petrecord.service;import com.petrecord.petrecord.entity.R;
import com.petrecord.petrecord.entity.WxUser;/*** 微信用户Service*/
public interface WxUserService {/*** 保存用户* @param wxUser* @return*/R save(WxUser wxUser);
}

创建Service实现类

package com.petrecord.petrecord.service.impl;import com.petrecord.petrecord.entity.R;
import com.petrecord.petrecord.entity.WxUser;
import com.petrecord.petrecord.mapper.WxUserMapper;
import com.petrecord.petrecord.service.WxUserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;@Service
public class WxUserServiceImpl implements WxUserService {@Autowiredprivate WxUserMapper wxUserMapper;@Overridepublic R save(WxUser wxUser) {int count = wxUserMapper.save(wxUser);if(count <= 0){return R.error("保存失败");}return R.ok("保存成功");}
}

创建mapper接口

package com.petrecord.petrecord.mapper;import com.petrecord.petrecord.entity.WxUser;
import org.apache.ibatis.annotations.Mapper;@Mapper
public interface WxUserMapper {/*** 保存用户* @param wxUser* @return*/int save(WxUser wxUser);
}

创建mapper.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapperPUBLIC "-//mybatis.org//DTD Mapper 3.0//EN""http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.petrecord.petrecord.mapper.WxUserMapper"><resultMap id="wxUserResult" type="com.petrecord.petrecord.entity.WxUser"><id column="id" property="id"/><result column="nick_name" property="nickName"/><result column="avatar_url" property="avatarUrl"/><result column="birthday" property="birthday"/><result column="sex" property="sex"/><result column="region" property="region"/><result column="phone_number" property="phoneNumber"/></resultMap><insert id="save" keyProperty="id" useGeneratedKeys="true">insert into wx_uservalues (#{id},#{nickName},#{avatarUrl},#{birthday},#{sex},#{region},#{phoneNumber})</insert></mapper>

启动类加上注解扫描mapper接口

package com.petrecord.petrecord;import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;@SpringBootApplication
@MapperScan("com.petrecord.petrecord.mapper")
public class PetRecordApplication {public static void main(String[] args) {SpringApplication.run(PetRecordApplication.class, args);}}

微信小程序前端修改

添加reques请求工具

const baseUrl = 'http://localhost:8080'export const getBaseUrl = ()=>{return baseUrl;
}// 后端request请求工具类
export const requestUtil = (params)=>{return new Promise((resolve,reject)=>{wx.request({...params,url: baseUrl + params.url,success: (res)=>{resolve(res)},fail: (err)=>{reject(err)}})});
}

修改userInfo.js

// pages/userInfo/userInfo.js
import {requestUtil,getBaseUrl} from '../../utils/requestUtil.js'const app = getApp()
Page({/*** 页面的初始数据*/data: {userInfo: {nickName: '',avatarUrl: '',userId: '',birthday: '',region: [],phoneNumber: '',sex: ''},date: '2000-09-01',dateStatus: false,sexStatus: false,regionStatus: false,array: ['男', '女', '未知'],region:  ['广东省', '广州市', '海珠区'],customItem: '全部',baseUrl: ''},/*** 生命周期函数--监听页面加载*/onLoad(options) {const baseUrl = getBaseUrl();let userInfo = wx.getStorageSync('userInfo') || ''if(userInfo === ''){this.setData({userInfo: {nickName: app.globalData.userInfo.nickName,avatarUrl: app.globalData.userInfo.avatarUrl,userId: app.globalData.userInfo.userId},baseUrl})}else{this.setData({userInfo})}},async saveUserInfo(){const res = await requestUtil({url: '/wxUser/save',method: 'POST',data: this.data.userInfo})if(res.data.code === 0){//修改全局变量中的用户信息,将其存入缓存中wx.setStorageSync('userInfo', this.data.userInfo)wx.switchTab({url: '/pages/Ta/Ta',})}else{wx.showToast({title: '保存失败，请重新输入',icon: 'none'})}},phoneNumberMethod(e){const data = e.detail.value;if(data.length == 0){wx.showToast({title: '请输入手机号',icon:'none'})}if(data.length != 11 || !/^1[3456789]\d{9}$/.test(data)){wx.showToast({title: '请输入正确的手机号',icon:'none'})}this.setData({userInfo: {phoneNumber: data,nickName: this.data.userInfo.nickName,avatarUrl: this.data.userInfo.avatarUrl,userId: this.data.userInfo.userId,birthday: this.data.userInfo.birthday,sex: this.data.userInfo.sex,region: this.data.userInfo.region}})},bindRegionChange: function (e) {let region = e.detail.valuelet regionStr = ""+region[0] +" " +region[1] +" "+ region[2]this.setData({userInfo: {region: regionStr,nickName: this.data.userInfo.nickName,avatarUrl: this.data.userInfo.avatarUrl,userId: this.data.userInfo.userId,phoneNumber: this.data.userInfo.phoneNumber,birthday: this.data.userInfo.birthday,sex: this.data.userInfo.sex},regionStatus: true})},bindSexChange(e){console.log(e.detail.value);this.setData({userInfo: {nickName: this.data.userInfo.nickName,avatarUrl: this.data.userInfo.avatarUrl,userId: this.data.userInfo.userId,region: this.data.userInfo.region,phoneNumber: this.data.userInfo.phoneNumber,birthday: this.data.userInfo.birthday,sex: this.data.array[e.detail.value]},sexStatus: true})},bindDateChange(e){console.log('picker发送选择改变，携带值为', e.detail.value)this.setData({userInfo: {nickName: this.data.userInfo.nickName,avatarUrl: this.data.userInfo.avatarUrl,userId: this.data.userInfo.userId,region: this.data.userInfo.region,phoneNumber: this.data.userInfo.phoneNumber,sex: this.data.userInfo.sex,birthday: e.detail.value,},dateStatus: true})},onChooseAvatar(e) {const { avatarUrl } = e.detailapp.globalData.userInfo.avatarUrl = avatarUrl this.setData({userInfo: {avatarUrl: avatarUrl,nickName: this.data.userInfo.nickName,userId: this.data.userInfo.userId,region: this.data.userInfo.region,birthday: this.data.userInfo.birthday,sex: this.data.userInfo.sex,phoneNumber: this.data.userInfo.phoneNumber,}})},/*** 生命周期函数--监听页面初次渲染完成*/onReady() {},/*** 生命周期函数--监听页面显示*/onShow() {},/*** 生命周期函数--监听页面隐藏*/onHide() {},/*** 生命周期函数--监听页面卸载*/onUnload() {},/*** 页面相关事件处理函数--监听用户下拉动作*/onPullDownRefresh() {},/*** 页面上拉触底事件的处理函数*/onReachBottom() {},/*** 用户点击右上角分享*/onShareAppMessage() {}
})

修改Ta.wxml

<!--pages/Ta/Ta.wxml-->
<view class="pet_wrapper"><!-- 用户信息 --><view class="user_info_wrapper"><view class="user_info"><image src="{{userInfo.avatarUrl}}" mode="widthFix" /><view class="user"><view class="user_id">ID:{{userInfo.userId}}</view><view class="user_name">{{userInfo.nickName}}</view></view><button class="edit_user_info" bind:tap="editUserInfo">编辑个人信息</button></view></view><!-- 功能栏 -->
</view>

修改Ta.js

// pages/Ta/Ta.js
const app = getApp()
Page({/*** 页面的初始数据*/data: {userInfo: {userId: '',nickName: '',avatarUrl: ''}},/*** 生命周期函数--监听页面加载*/onLoad(options) {let userInfo = wx.getStorageSync('userInfo') || ''console.log(userInfo);if(userInfo === ''){this.setData({userInfo: {nickName: app.globalData.userInfo.nickName,avatarUrl: app.globalData.userInfo.avatarUrl,userId: app.globalData.userInfo.userId}})}else{this.setData({userInfo})}},editUserInfo(){wx.navigateTo({url: '/pages/userInfo/userInfo',})},/*** 生命周期函数--监听页面初次渲染完成*/onReady() {},/*** 生命周期函数--监听页面显示*/onShow() {let userInfo = wx.getStorageSync('userInfo') || ''if(userInfo === ''){this.setData({userInfo: {nickName: app.globalData.userInfo.nickName,avatarUrl: app.globalData.userInfo.avatarUrl,userId: app.globalData.userInfo.userId}})}else{this.setData({userInfo})}},/*** 生命周期函数--监听页面隐藏*/onHide() {},/*** 生命周期函数--监听页面卸载*/onUnload() {},/*** 页面相关事件处理函数--监听用户下拉动作*/onPullDownRefresh() {},/*** 页面上拉触底事件的处理函数*/onReachBottom() {},/*** 用户点击右上角分享*/onShareAppMessage() {}
})

完成效果：