spring集成mybatis-plus

一、mybatis-plus

使用mybatis-plus可以轻松实现通用crue、通用service，不用再在xml、dao、service里写增删改查的代码（需要写特殊方法的时候可以按原先的来），通用的crue加入了多达17种方法

配合代码生成，只要建好表、实体类，1秒钟就可以生成各个层的类

二、官方例子

spring-mvc集成mybatis-plus demo

代码生成说明

三、简单配置方法

1、pom.xml

<dependency>
    <groupId>com.baomidou</groupId>
    <artifactId>mybatis-plus</artifactId>
    <version>仓库最高版本号</version>
</dependency>

2、spring-context-mybatis.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:p="http://www.springframework.org/schema/p" 
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
	xmlns:util="http://www.springframework.org/schema/util"
	xsi:schemaLocation="http://www.springframework.org/schema/beans
	http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
	http://www.springframework.org/schema/context
	http://www.springframework.org/schema/context/spring-context-3.0.xsd
	http://www.springframework.org/schema/util
	http://www.springframework.org/schema/util/spring-util-3.0.xsd">
	
	<!-- 加载配置属性文件 -->
	<context:property-placeholder location="classpath:library.properties" ignore-unresolvable="true" />
	
	<!-- 配置SessionFactory -->
	<bean id="sqlSessionFactory" class="com.baomidou.mybatisplus.spring.MybatisSqlSessionFactoryBean">
		<property name="dataSource" ref="dataSource"/>
		<property name="mapperLocations" value="classpath:org/sy/library/mapper/xml/**/*.xml"/>
		<property name="typeAliasesPackage" value="org.sy.library.entity.*"/>
        <property name="configLocation" value="classpath:conf/mybatis/mybatis-config.xml"/>
        <property name="globalConfig" ref="globalConfig"/>
		<property name="plugins">
			<array>
				<!-- 分页插件配置 -->
				<bean id="paginationInterceptor" class="com.baomidou.mybatisplus.plugins.PaginationInterceptor"></bean>
			</array>
		</property>
	</bean>
	
	<!-- 配置mybatisConfig -->
	<bean id="mybatisConfig" class="com.baomidou.mybatisplus.MybatisConfiguration">
		<property name="mapUnderscoreToCamelCase" value="true"/>
	</bean>
	
	<!-- 定义 MP 全局策略 -->
	<bean id="globalConfig" class="com.baomidou.mybatisplus.entity.GlobalConfiguration">
		<!-- 全局ID类型： 0, "数据库ID自增"， 1, "用户输入ID", 2, "全局唯一ID", 3, "全局唯一ID"-->
		<property name="idType" value="2"/>
	</bean>
	
	<!-- MyBatis 动态扫描  -->
	<bean id="mapperScannerConfigurer" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
		<property name="basePackage" value="org.sy.library.mapper"/>
	</bean>
	
	<!-- 配置数据源 -->
	<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close"> 
	    .............
	</bean>
</beans>

3、mybatis-config.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD SQL Map Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
    <settings>
        <!-- 下划线转驼峰 -->
        <setting name="mapUnderscoreToCamelCase" value="true"/>
    </settings>
</configuration>

三、代码生成

package org.sy.library.common.auto;

import com.baomidou.mybatisplus.generator.AutoGenerator;
import com.baomidou.mybatisplus.generator.config.DataSourceConfig;
import com.baomidou.mybatisplus.generator.config.GlobalConfig;
import com.baomidou.mybatisplus.generator.config.PackageConfig;
import com.baomidou.mybatisplus.generator.config.StrategyConfig;
import com.baomidou.mybatisplus.generator.config.TemplateConfig;
import com.baomidou.mybatisplus.generator.config.converts.MySqlTypeConvert;
import com.baomidou.mybatisplus.generator.config.rules.DbType;
import com.baomidou.mybatisplus.generator.config.rules.NamingStrategy;

/**
 * 实体生成器
 */
public class CustomGenerator {
	
	public static void main(String[] args) {
		
		AutoGenerator mpg = new AutoGenerator();
		
		//全局配置
		GlobalConfig gc = new GlobalConfig();
		gc.setOutputDir("C://utopia-company//开发库//utopia//library//library-api//src//main//java");
		gc.setFileOverride(false);
		gc.setEnableCache(false);
		gc.setActiveRecord(false);
		gc.setAuthor("sy");
		mpg.setGlobalConfig(gc);
		
		//数据源配置
		DataSourceConfig dsc = new DataSourceConfig();
		dsc.setDbType(DbType.MYSQL);
		dsc.setTypeConvert(new MySqlTypeConvert());
		dsc.setDriverName("com.mysql.jdbc.Driver");
		dsc.setUsername("root");
		dsc.setPassword("xxxxxxx");
		dsc.setUrl("jdbc:mysql://xxx.xxx.xxx.xxx:3306/utopia?useUnicode=true&characterEncoding=utf-8&useSSL=false");
		mpg.setDataSource(dsc);
		
		//策略配置
		StrategyConfig strategy = new StrategyConfig();
		strategy.setInclude(new String[] { "library_user_book" }); // 需要生成的表
		strategy.setTablePrefix("library_");// 此处可以修改为您的表前缀
		strategy.setNaming(NamingStrategy.underline_to_camel);// 表名生成策略
		mpg.setStrategy(strategy);
		
		//包配置
		PackageConfig pc = new PackageConfig();
		pc.setParent("org.sy.library");
		//pc.setModuleName("test");
		mpg.setPackageInfo(pc);
		
		//目录配置
		TemplateConfig tc = new TemplateConfig();
		tc.setController(null);
		mpg.setTemplate(tc);
        
		//执行生成
		mpg.execute();
	}
}