Day 35 MybatisGenerator自动生成代码

Mybatis

• MyBatis 是支持定制化 SQL、存储过程以及高级映射的优秀的持久层框架。
• MyBatis 避免了几乎所有的 JDBC 代码和手动设置参数以及获取结果集。
• MyBatis 可以对配置和原生Map使用简单的 XML 或注解，将接口和 Java 的 POJOs(Plain Old Java Objects,普通的 Java对象)映射成数据库中的记录。

generatorConfig.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE generatorConfiguration
  PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN"
  "http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd">
<generatorConfiguration>
    <!--数据库驱动-->
    <classPathEntry    location="mysql-connector-java-8.0.15.jar"/>
    <context id="DB2Tables"    targetRuntime="MyBatis3">
        <commentGenerator>
            <property name="suppressDate" value="true"/>
            <property name="suppressAllComments" value="true"/>
        </commentGenerator>
        <!--数据库链接地址账号密码-->
        <jdbcConnection driverClass="com.mysql.cj.jdbc.Driver" connectionURL="jdbc:mysql://localhost:3306/shriotest?useSSL=false&amp;serverTimezone=Asia/Shanghai" userId="root" password="123456">
        </jdbcConnection>
        <javaTypeResolver>
            <property name="forceBigDecimals" value="false"/>
        </javaTypeResolver>
        <!--生成Model类存放位置-->
        <javaModelGenerator targetPackage="com.base.entity" targetProject="src">
            <property name="enableSubPackages" value="true"/>
            <property name="trimStrings" value="true"/>
        </javaModelGenerator>
        <!--生成映射文件存放位置-->
        <sqlMapGenerator targetPackage="mapping" targetProject="src">
            <property name="enableSubPackages" value="true"/>
        </sqlMapGenerator>
        <!--生成Dao类存放位置-->
        <javaClientGenerator type="XMLMAPPER" targetPackage="com.zz.mapper" targetProject="src">
            <property name="enableSubPackages" value="true"/>
        </javaClientGenerator>
        <!--生成对应表及类名-->
        <table tableName="t_user" domainObjectName="User" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false"></table>
		<table tableName="t_role" domainObjectName="Role" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false"></table>
		 <table tableName="t_permission" domainObjectName="Permission" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false"></table>
		 <table tableName="t_user_role" domainObjectName="UserRole" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false"></table>
		<table tableName="t_role_permission" domainObjectName="RolePermission" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false"></table>
    </context>
</generatorConfiguration>

pom

<!-- Add typical dependencies for a web application -->
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <!--目的：《可选》引入springboot 热启动，每次修改以后，会自动把改动加载，不需要重启服务了-->
        <dependency> <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <optional>true</optional>
        </dependency>

        <!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>8.0.15</version>
        </dependency>

        <!-- https://mvnrepository.com/artifact/javax.servlet/javax.servlet-api -->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>4.0.1</version>
            <scope>provided</scope>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.mybatis.spring.boot/mybatis-spring-boot-starter -->
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>2.0.0</version>
        </dependency>
    </dependencies>

application.properties文件

#设置项目的端口号
server.port=9081

#设置工程名字
server.servlet.context-path=/mybatisdemo

#数据库的信息  datasource 数据源
spring.datasource.url = jdbc:mysql://localhost:3306/shriotest?useSSL=false&serverTimezone=Asia/Shanghai
spring.datasource.username = root
spring.datasource.password = 123456
spring.datasource.driverClassName = com.mysql.cj.jdbc.Driver

## Mybatis ÅäÖÃ
mybatis.typeAliasesPackage=org.spring.springboot.domain
#mybatis.mapperLocations=classpath:com/zz/mapping/*.xml,com/zz/EDGE/mapping/*.xml,com/zz/jwh/mapping/*.xml,com/zz/hc/mapping/*.xml,com/zz/simpleSpade/mapping/*.xml,com/zz/lsw/mapping/*.xml,com/zz/wsq/mapping/*.xml,com/zz/zcj/mapping/*.xml
mybatis.mapperLocations=classpath:mapping/*.xml

在 jar包同级目录执行：

在命令行中执行：java -jar mybatis-generator-core-1.3.5.jar -configfile generatorConfig.xml -overwrite

目录结构

Controller

package com.base.controller;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;

import com.base.util.KeyUtil;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import com.base.entity.User;
import com.base.service.UserService;

@RestController
@RequestMapping("user")
public class UserController {
	@Resource
	UserService userService;

	@RequestMapping("add/{name}/{pwd}")//拦截路径
	public User add(@PathVariable("name") String uname,@PathVariable("pwd") String pwd){
		User user=new User();
		user.setPasswd(pwd);
		user.setUsername(uname);
		user.setId(KeyUtil.genUniqueKey());
		userService.add(user);
		return user;
	}

	
}

Service

package com.base.service;

import com.base.entity.User;
import com.zz.mapper.UserMapper;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;


@Service
public class UserService {
	@Resource
	UserMapper userMapper;

	public int add(User user){
		return userMapper.insert(user);
	}
}