作者：安詳?shù)目喽〔?/span>

鏈接：https://www.cnblogs.com/ckfeng/p/12812214.html

項(xiàng)目描述：在微信小程序中通過與Springboot操作數(shù)據(jù)庫實(shí)現(xiàn)簡單的增刪改查，其中我是用springboot整合mybatis-plus 和mysql使用的

1. 開發(fā)前準(zhǔn)備

1.1 前置知識

java基礎(chǔ)
SpringBoot簡單基礎(chǔ)知識

1.2 環(huán)境參數(shù)

開發(fā)工具：IDEA
基礎(chǔ)環(huán)境：Maven+JDK8
主要技術(shù)：SpringBoot、lombok、mybatis-plus、mysql 、微信小程序
SpringBoot版本：2.2.6

2.開發(fā)者服務(wù)器

項(xiàng)目結(jié)構(gòu)：

2.1 初始配置

（1）pom.xml配置

?<dependencies>
????????<dependency>
????????????<groupId>org.springframework.bootgroupId>
????????????<artifactId>spring-boot-starter-webartifactId>
????????dependency>

????????<dependency>
????????????<groupId>org.mybatis.spring.bootgroupId>
????????????<artifactId>mybatis-spring-boot-starterartifactId>
????????????<version>2.1.1version>
????????dependency>

????????
????????<dependency>
????????????<groupId>org.springframework.bootgroupId>
????????????<artifactId>spring-boot-starter-thymeleafartifactId>
????????dependency>

????????
????????<dependency>
????????????<groupId>com.alibabagroupId>
????????????<artifactId>druidartifactId>
????????????<version>1.1.14version>
????????dependency>

????????
????????<dependency>
????????????<groupId>mysqlgroupId>
????????????<artifactId>mysql-connector-javaartifactId>
????????????<version>5.1.42version>
????????????<scope>runtimescope>
????????dependency>

????????
????????<dependency>
????????????<groupId>com.baomidougroupId>
????????????<artifactId>mybatis-plus-boot-starterartifactId>
????????????<version>3.1.0version>
????????dependency>

????????
????????<dependency>
????????????<groupId>org.projectlombokgroupId>
????????????<artifactId>lombokartifactId>
????????????<optional>trueoptional>
????????dependency>

????????
????????<dependency>
????????????<groupId>com.github.pagehelpergroupId>
????????????<artifactId>pagehelper-spring-boot-starterartifactId>
????????????<version>1.2.5version>
????????dependency>

????????
????????<dependency>
????????????<groupId>junitgroupId>
????????????<artifactId>junitartifactId>
????????????<scope>testscope>
????????dependency>

????????<dependency>
????????????<groupId>org.springframework.bootgroupId>
????????????<artifactId>spring-boot-starter-testartifactId>
????????????<scope>testscope>
????????????<exclusions>
????????????????<exclusion>
????????????????????<groupId>org.junit.vintagegroupId>
????????????????????<artifactId>junit-vintage-engineartifactId>
????????????????exclusion>
????????????exclusions>
????????dependency>
????dependencies>

????<build>
????????<plugins>
????????????<plugin>
????????????????<groupId>org.springframework.bootgroupId>
????????????????<artifactId>spring-boot-maven-pluginartifactId>
????????????plugin>
????????plugins>
????build>

project>

（2）application.yml

#?Spring?Boot?的數(shù)據(jù)源配置
spring:
??datasource:
????name:?wx
????url:?jdbc:mysql://localhost:3306/wx_mini_program?useUnicode=true&characterEncoding=utf8&zeroDateTimeBehavior=convertToNull&useSSL=true&serverTimezone=GMT%2B8
?username:?root
????password:?root
????#?使用druid數(shù)據(jù)源
????type:?com.alibaba.druid.pool.DruidDataSource
????driver-class-name:?com.mysql.jdbc.Driver
????filters:?stat
????maxActive:?20?initialSize:?1?maxWait:?60000?minIdle:?1?timeBetweenEvictionRunsMillis:?60000?minEvictableIdleTimeMillis:?300000?validationQuery:?select?'x'?testWhileIdle:?true?testOnBorrow:?false?testOnReturn:?false?poolPreparedStatements:?true?maxPoolPreparedStatementPerConnectionSize:?20?maxOpenPreparedStatements:?20?#?mybatis-plus相關(guān)配置
mybatis-plus:
??#?xml掃描，多個(gè)目錄用逗號或者分號分隔（告訴?Mapper?所對應(yīng)的?XML?文件位置）
??mapper-locations:?classpath:mapper/*.xml
??#?以下配置均有默認(rèn)值,可以不設(shè)置
??global-config:
????db-config:
??????#主鍵類型?AUTO:"數(shù)據(jù)庫ID自增"?INPUT:"用戶輸入ID",ID_WORKER:"全局唯一ID?(數(shù)字類型唯一ID)",?UUID:"全局唯一ID?UUID";
??????id-type:?auto
??????#字段策略?IGNORED:"忽略判斷"??NOT_NULL:"非?NULL?判斷")??NOT_EMPTY:"非空判斷"
??????field-strategy:?NOT_EMPTY
??????#數(shù)據(jù)庫類型
??????db-type:?MYSQL

??#?指定實(shí)體類的包
??type-aliases-package:?com.ckf.login_wx.entity
??configuration:
????#?是否開啟自動駝峰命名規(guī)則映射:從數(shù)據(jù)庫列名到Java屬性駝峰命名的類似映射
????map-underscore-to-camel-case:?true
????#?如果查詢結(jié)果中包含空值的列，則?MyBatis?在映射的時(shí)候，不會映射這個(gè)字段
????call-setters-on-nulls:?true
????#?這個(gè)配置會將執(zhí)行的sql打印出來，在開發(fā)或測試的時(shí)候可以用
????log-impl:?org.apache.ibatis.logging.stdout.StdOutImpl

#?PageHelper分頁插件
pagehelper:
??helperDialect:?mysql
??reasonable:?true
??supportMethodsArguments:?true
??params:?count=countSql

2.2 小程序用戶表


CREATE?table?users(
?id?int?not?null?PRIMARY?key?auto_increment,
?name?varchar(255)?not?null,
?age?int?not?null?);

insert?into?users?value(null,'陳克鋒',18);
insert?into?users?value(null,'陳克帥',11);
insert?into?users?value(null,'陳克兵',14);?select?*?from?users;

2.3 pojo

2.4 mapper

2.5 service

2.5 serviceImpl

配置SpringBoot掃描mapper

2.6 controller

LoginController


package?com.ckf.login_wx.controller;

import?org.springframework.web.bind.annotation.PostMapping;
import?org.springframework.web.bind.annotation.RestController;

import?java.util.HashMap;
import?java.util.Map;?/**
?*?@author?安詳?shù)目喽〔?br>?*?@date?2020/4/30?11:46?*/?@RestController?public?class?LoginController?{?/**
?????*?登錄
?????*?@param?phone
?????*?@param?password
?????*?@return?*/?@PostMapping("/doLogin")?public?Map?doLogin(String?phone,?String?password){
????????Map?map?=?new?HashMap();?if?((phone.equals("10086")&&?password.equals("123456"))){
????????????map.put("code",200);
????????????map.put("result","登錄成功");
????????????System.out.println("登錄成功");
????????}else?{
????????????map.put("result","no");
????????}?return?map;
????}

}

UserController


package?com.ckf.login_wx.controller;

import?com.ckf.login_wx.entity.User;
import?com.ckf.login_wx.servic.UserService;
import?org.springframework.beans.factory.annotation.Autowired;
import?org.springframework.web.bind.annotation.*;?/**
?*?@author?安詳?shù)目喽〔?br>?*?@date?2020/4/30?13:39?*/?@RestController
@RequestMapping("/test")?public?class?UserController?{

????@Autowired?private?UserService?userService;?/**
?????*?查詢?nèi)?br>?????*?@return?*/?@GetMapping("/list")?public?Object?list(){
????????System.out.println("查詢成功");?return?userService.list();
????}?/**
?????*?根據(jù)id刪除
?????*?@param?id
?????*?@return?*/?@GetMapping("/delete")?public?boolean?delete(Integer?id){
????????System.out.println("刪除成功");?return?userService.removeById(id);
????}?/**
?????*??根據(jù)id查詢
??????*?@param?id
?????*?@return?*/?@GetMapping("/byid")?public?Object?byid(Integer?id){
????????System.out.println("查詢成功");?return?userService.getById(id);
????}?/**
?????*??修改
?????*?@param?user
?????*?@return?*/?@PostMapping("/update")?public?boolean?update(@RequestBody?User?user){
????????System.out.println("修改成功");?return?userService.updateById(user);
????}?/**
?????*?添加
?????*?@param?user
?????*?@return?*/?@PostMapping("/add")?public?boolean?add(@RequestBody?User?user){
????????System.out.println("添加成功");?return?userService.save(user);
????}

}

3. 微信小程序

項(xiàng)目結(jié)構(gòu)：

3.1 初始配置

3.2 bing.wxml



<view>

??<form?bindsubmit='doLogin'>
????????????
????????????<view?class="inputView">

????????????????<label?class="loginLabel">賬號label>
????????????????<input?name="phone"?value='10086'?class="inputText"?placeholder="請輸入賬號"?/>
????????????view>
????????????<view?class="line">view>

????????????
????????????<view?class="inputView">

????????????????<label?class="loginLabel">密碼label>
????????????????<input?name="password"?value='123456'?class="inputText"?password="true"?placeholder="請輸入密碼"?/>
????????????view>
????????????<view?class="line">view>
????????????
????????????<view?class='backColor'>
????????????????<button?class="loginBtn"?formType="submit"??open-type='getUserInfo'?>登錄button>
????????????view>

????????????
????????form>

view>

3.3 bing.js

3.3 list.wxml



??<button?class="add"?type='primary'?bindtap='addArea'>添加button>
<view?class="container">
??<view?class='widget'>
????<text?class='column'>編號text>
????<text?class='column'>姓名text>
????<text?class='column'>年齡text>
????<text?class='link-column'>操作text>
??view>
??<scroll-view?scroll-y="true">
????<view>
??????<block?wx:for='{{list}}'>
??????<view?class='widget'>?
????????<text?class='column'>{{item.id}}text>
????????<text?class='column'>{{item.name}}text>
?????????<text?class='column'>{{item.age}}text>
????????<view?class='link-column'>
??????????<navigator?class='link'?url='../operation/operation?id={{item.id}}'>編輯navigator>?|
??????????<text?class='link'?bindtap='deleteArea'?data-areaid='{{item.id}}'?data-areaname='{{item.name}}'?data-index='{{index}}'>刪除text>??
????????view>
????????view>??????
??????block>
????view>
??scroll-view>

view>

3.4 list.js


//?pages/list/list.js
Page({?/**
???*?頁面的初始數(shù)據(jù)?*/?data:?{
????list:[]
??},?/**
???*?生命周期函數(shù)--監(jiān)聽頁面加載?*/?onLoad:?function?(options)?{

??},?/**
???*?生命周期函數(shù)--監(jiān)聽頁面初次渲染完成?*/?onReady:?function?()?{

??},?/**
???*?生命周期函數(shù)--監(jiān)聽頁面顯示?*/?onShow:?function?()?{?var?that=this;
????wx.request({
??????url:?'http://localhost:8080/test/list',
??????method:'GET',
??????data:{},
??????success:function(res){?var?list=res.data;?if(list==null){?var?toastText='獲取數(shù)據(jù)失敗';
??????????wx.showToast({
????????????title:?toastText,
????????????icon:'',
????????????duration:2000?//彈出時(shí)間
?})
????????}else{
??????????that.setData({
????????????list:list
??????????})
????????}
??????}
????})
??},?/**
???*?生命周期函數(shù)--監(jiān)聽頁面隱藏?*/?onHide:?function?()?{

??},?/**
???*?生命周期函數(shù)--監(jiān)聽頁面卸載?*/?onUnload:?function?()?{

??},?/**
???*?頁面相關(guān)事件處理函數(shù)--監(jiān)聽用戶下拉動作?*/?onPullDownRefresh:?function?()?{

??},?/**
???*?頁面上拉觸底事件的處理函數(shù)?*/?onReachBottom:?function?()?{

??},?/**
???*?用戶點(diǎn)擊右上角分享?*/?onShareAppMessage:?function?()?{

??},
??addArea:function(){
????wx.navigateTo({
??????url:'../operation/operation'?})
??},
??deleteArea:?function?(e)?{?var?that=this;
????wx.showModal({
??????title:?'提示',
??????content:?'確定要刪除['?+?e.target.dataset.areaname?+']嗎？',
??????success:function(sm){?if(sm.confirm){
??????????wx.request({
????????????url:?'http://localhost:8080/test/delete',
????????????data:?{?id:?e.target.dataset.areaid},
????????????method:'GET',
????????????success:function(res){?var?result=res.statusCode;?var?toastText="刪除成功";?if(result!=200){
????????????????toastText?=?"刪除失敗";
??????????????}else{
????????????????that.data.list.splice(e.target.dataset.index,1);
????????????????that.setData({
??????????????????list:that.data.list
????????????????});
??????????????}
??????????????wx.showToast({
????????????????title:?toastText,
????????????????icon:'',
????????????????duration:2000?});
????????????}
??????????})
????????}
??????}
????})

??}
})

3.5 app.json


{?"pages":?[?"pages/bind/bind",?"pages/list/list",?"pages/logs/logs",?"pages/operation/operation",?"pages/index/index"?],?"window":?{?"backgroundColor":?"#F6F6F6",?"backgroundTextStyle":?"light",?"navigationBarBackgroundColor":?"#29d",?"navigationBarTitleText":?"login",?"navigationBarTextStyle":?"black"?},?"sitemapLocation":?"sitemap.json",?"style":?"v2"?}

4. 測試

啟動開發(fā)者服務(wù)器，啟動SpringBoot的main方法。

打開微信小程序開發(fā)者工具

登錄頁面

首頁

添加頁面

修改頁面

刪除

到處基本的增刪改查操作已經(jīng)完成了

如有需要前往 Gitee（碼云）下載

前臺：https://gitee.com/ckfeng/applet_of_wechat.git

后臺：https://gitee.com/ckfeng/wx_login.git

-END-
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