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springBoot开发

<resultMap id="Areas" type="com.imooc.demo.entyti.Area">
    <id column="area_id" jdbcType="INTEGER" property="areaId" />
    <result column="area_name" jdbcType="VARCHAR" property="areaName" />
    <result column="priority" jdbcType="INTEGER" property="priority" />
    <result column="create_time" jdbcType="DATE" property="createTime" />
    <result column="last_edit_time" jdbcType="DATE" property="lastEditTime" />
</resultMap>
 <select id="queryArea" resultMap="Areas">
 SELECT
area_id,
area_name,
priority,
create_time,
last_edit_time
 FROM
 td_area
 ORDER BY
priority DESC
     </select>

    绑定代码，忽略下划线改成大写

server层为了复查dao层中的操作，与事务有关

将增删改查整合到一起

gitignore配置需要git管理的文件

test失败？？？？？？？？

java.lang.IllegalStateException: Failed to load ApplicationContext

我的

1111

配置类

dataSource.return = return dataSource;

springboot项目，除了mybatis的配置，其他配置一般都不用xml。mybatis的配置也可用java类，但是xml的方式是主流。

@controllerAdvice统一异常处理

Junit单元测试

springboot集成mybatise，mapper.xml的编写

MenuDao层：

package com.example.demo.dao;

import com.example.demo.bean.MainMenu;
import org.springframework.stereotype.Repository;

import java.util.List;

@Repository
public interface MenuDao {
    public List<MainMenu> getMenus();
}

MenuController层：

package com.example.demo.logincontroller;

import com.alibaba.fastjson.JSON;
import com.example.demo.bean.MainMenu;
import com.example.demo.dao.MenuDao;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.HashMap;
import java.util.List;

@RestController
public class MenuController {

    @Autowired
    MenuDao menuDao;
    @RequestMapping(value="/menus")
    public String getAllMenus(){
        System.out.println("访问成功！！！");
        HashMap<String, Object> data = new HashMap<>();
        List<MainMenu> menus = menuDao.getMenus();
        if (menus != null){
            data.put("menus", menus);
            data.put("flag", 200);
        }else{
            data.put("flag", 404);
        }
        String s = JSON.toJSONString(data);
        return s;
    }
}

MenuMainMapper。xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.example.demo.dao.MenuDao">

<!--    关系映射-->
    <resultMap id="menuMap" type="com.example.demo.bean.MainMenu">
        <id column="id" property="id"></id>
        <result column="title" property="title"></result>
        <result column="path" property="path"></result>
        <collection property="sList" ofType="com.example.demo.bean.SubMenu">
            <id column="sid" property="id"></id>
            <result column="stitle" property="title"></result>
            <result column="spath" property="path"></result>
        </collection>
    </resultMap>
    <select id="getMenus" resultMap="menuMap">
        select mm.*,sm.id as sid ,sm.title as stitle ,sm.path as spath from
        vue_mainmenu mm ,vue_submenu sm where mm.id = mid;
    </select>
</mapper>

Controller层：

package com.example.demo.logincontroller;

import com.alibaba.fastjson.JSON;
import com.example.demo.bean.UserName;
import com.example.demo.dao.UserNameDao;
//import jdk.nashorn.internal.parser.JSONParser;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
//import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestController;

import java.util.HashMap;

@RestController
public class LoginController {
    @Autowired
    UserNameDao userNameDao;

    @RequestMapping(value="/Login")
    public String login(@RequestBody UserName username){
        String flag = "error";
        UserName userName = userNameDao.getUserNameByMassage(username.getUsername(), username.getPassword());
        HashMap<String, Object> res = new HashMap<>();
        if(userName != null){
            flag = "hello world!!!";
        }
        res.put("flag", flag);
        res.put("username", username);
        String res_json = JSON.toJSONString(res);
//        System.out.println(userName);
        return res_json;
    }
}

UserNameDao层：

package com.example.demo.dao;

import com.example.demo.bean.UserName;
import org.apache.ibatis.annotations.Param;
import org.springframework.stereotype.Repository;

@Repository
public interface UserNameDao {
    public UserName getUserNameByMassage(@Param("username") String username, @Param("password") String password);
}

解决跨域：

package com.example.demo.config;

import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.CorsRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;

/**
 * 解决跨域问题
 */
@Configuration
public class Config extends WebMvcConfigurerAdapter {

    @Override
    public void addCorsMappings(CorsRegistry registry) {
        registry.addMapping("/**")
                .allowedOrigins("*")
                .allowedMethods("*")
                .allowCredentials(true)
                .maxAge(3600);
    }
}

实体层bean：

package com.example.demo.bean;

public class UserName {
    private int id;
    private String username;
    private String password;

    public UserName(){

    }

    public UserName(String username, String password){
        this.username = username;
        this.password = password;
    }
    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }

    @Override
    public String toString() {
        return "UserName{" +
                "id=" + id +
                ", username='" + username + '\'' +
                ", password='" + password + '\'' +
                '}';
    }
}

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  formSubmit:function(e){

    var that = this;

    var formData = e.detail.value;

    var url = that.data.addUrl;

    if(that.data.areaId != undefined){

      formData.areaId = that.data.areaId;

      url = that.data.modifyUrl;

    }

    wx.request({

      url: url,

      data: JSON.stringify(formData),

      method:"GET",

      header: {'Content-Type':'application/json'},

      success: function(res){

        var result = res.data.success;

        var toastText = "操作成功！";

        if(result != true){

          toastText = "操作失败"+res.data.errMsg;

        }

        wx.showToast({

          title: toastText,

        })

      }

    })

  }

operation.wxml

onShow

目录结构……

创建小程序项目

小程序介绍

jsonView 插件

IDEA:自动导包

实战项目页面