官方文档 http://baomidou.oschina.io/mybatis-plus-doc/#/quick-start
开源地址： Github | OSChina
pom.xml引入依赖
com.baomidou
mybatis-plus-boot-starter
2.2.0
application-dev.properties基本配置
#---------Mybatis-plus配置----------------------------------------
# 如果是放在src/main/java目录下 classpath:/com/yourpackage/*/mapper/*Mapper.xml
# 如果是放在resource目录 classpath:/mapper/*Mapper.xml
#mybatis-plus-mapper-locations: classpath:com/zklt/bigdata/web/demo/dao/*.xml
#实体扫描，多个package用逗号或者分号分隔
mybatis-plus-typeAliasesPackage:com.zklt.bigdata.web.demo.bean
#主键类型 0:"数据库ID自增", 1:"用户输",2:"全局唯一ID (数字类型唯一ID)", 3:"全局唯一ID UUID";
mybatis-plus-global-config-id-type: 3
#字段策略 0:"忽略判断",1:"非 NULL 判断"),2:"非空判断"
mybatis-plus-global-config-field-strategy: 2
#驼峰下划线转换
mybatis-plus-global-config-db-column-underline: true
#刷新mapper 调试神器
#refresh-mapper: true
#数据库大写下划线转换
#capital-mode: true
# Sequence序列接口实现类配置
mybatis-plus-global-config-key-generator: com.baomidou.mybatisplus.incrementer.OracleKeyGenerator
#逻辑删除配置（下面3个配置）
mybatis-plus-global-config-logic-delete-value: 1
mybatis-plus-global-config-logic-not-delete-value: 0
mybatis-plus-global-config-sql-injector: com.baomidou.mybatisplus.mapper.LogicSqlInjector
#自定义填充策略接口实现
mybatis-plus-global-config-meta-object-handler: com.baomidou.springboot.MyMetaObjectHandler
mybatis-plus-global-config-configuration:
#配置返回数据库(column下划线命名&&返回java实体是驼峰命名)，自动匹配无需as（没开启这个，SQL需要写as： select user_id as userId）
mybatis-plus-global-config-map-underscore-to-camel-case: true
mybatis-plus-global-config-cache-enabled: false
#配置JdbcTypeForNull, oracle数据库必须配置
mybatis-plus-global-config-jdbc-type-for-null: 'null'
spring-boot配置类
package com.zklt.bigdata.config;
import com.baomidou.mybatisplus.MybatisConfiguration;
import com.baomidou.mybatisplus.MybatisXMLLanguageDriver;
import com.baomidou.mybatisplus.plugins.OptimisticLockerInterceptor;
import com.baomidou.mybatisplus.plugins.PaginationInterceptor;
import com.baomidou.mybatisplus.plugins.PerformanceInterceptor;
import com.baomidou.mybatisplus.spring.MybatisSqlSessionFactoryBean;
import org.apache.ibatis.plugin.Interceptor;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.type.JdbcType;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import javax.sql.DataSource;
//todo Mybatis-plus 对phoenix的sql语句拼接 支持度不高，暂时废弃
@Configuration
@MapperScan("com.zklt.bigdata.web.demo.dao")
public class MybatisPlus4MysqlConfig {
@Primary
@Bean("mysqlSqlSessionFactory")
public SqlSessionFactory sqlSessionFactory(@Qualifier("mysqlDataSource") DataSource dataSource) throws Exception {
MybatisSqlSessionFactoryBean sqlSessionFactory = new MybatisSqlSessionFactoryBean();
sqlSessionFactory.setDataSource(dataSource);
MybatisConfiguration configuration = new MybatisConfiguration();
configuration.setDefaultScriptingLanguage(MybatisXMLLanguageDriver.class);
configuration.setJdbcTypeForNull(JdbcType.NULL);
sqlSessionFactory.setConfiguration(configuration);
sqlSessionFactory.setMapperLocations(new PathMatchingResourcePatternResolver()
.getResources("classpath*:com/zklt/bigdata/web/demo/dao/*.xml"));
sqlSessionFactory.setPlugins(new Interceptor[]{
new PaginationInterceptor(),
new PerformanceInterceptor(),
new OptimisticLockerInterceptor()
});
return sqlSessionFactory.getObject();
}
}
package com.zklt.bigdata.config;
import com.baomidou.mybatisplus.MybatisConfiguration;
import com.baomidou.mybatisplus.MybatisXMLLanguageDriver;
import com.baomidou.mybatisplus.plugins.OptimisticLockerInterceptor;
import com.baomidou.mybatisplus.plugins.PaginationInterceptor;
import com.baomidou.mybatisplus.plugins.PerformanceInterceptor;
import com.baomidou.mybatisplus.spring.MybatisSqlSessionFactoryBean;
import org.apache.ibatis.plugin.Interceptor;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.type.JdbcType;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import javax.sql.DataSource;
//todo Mybatis-plus 对phoenix的sql语句拼接 支持度不高，暂时废弃
@Configuration
@MapperScan("com.zklt.bigdata.web.phoenix.dao")
public class MybatisPlus4PhoenixConfig {
@Bean("phoenixSqlSessionFactory")
public SqlSessionFactory sqlSessionFactory(@Qualifier("phoenixDataSource") DataSource dataSource) throws Exception {
MybatisSqlSessionFactoryBean sqlSessionFactory = new MybatisSqlSessionFactoryBean();
sqlSessionFactory.setDataSource(dataSource);
MybatisConfiguration configuration = new MybatisConfiguration();
configuration.setDefaultScriptingLanguage(MybatisXMLLanguageDriver.class);
configuration.setJdbcTypeForNull(JdbcType.NULL);
sqlSessionFactory.setConfiguration(configuration);
sqlSessionFactory.setMapperLocations(new PathMatchingResourcePatternResolver()
.getResources("classpath*:com/zklt/bigdata/web/phoenix/dao/*.xml"));
sqlSessionFactory.setPlugins(new Interceptor[]{
new PaginationInterceptor(),
new PerformanceInterceptor(),
new OptimisticLockerInterceptor()
});
return sqlSessionFactory.getObject();
}
}
核心就是配置SqlSessionFactory
mybatis是这样配置
// @Primary
@Bean(name = "mysqlSqlSessionFactory")
public SqlSessionFactory sqlSessionFactory(@Qualifier("mysqlDataSource") DataSource dataSource) throws Exception {
SqlSessionFactoryBean sessionFactoryBean = new SqlSessionFactoryBean();
sessionFactoryBean.setDataSource(dataSource);
sessionFactoryBean.setMapperLocations(new PathMatchingResourcePatternResolver()
.getResources("classpath*:com/zklt/bigdata/web/*/dao/*.xml"));
return sessionFactoryBean.getObject();
}
然后改为mybatis-plus的
@Bean("phoenixSqlSessionFactory")
public SqlSessionFactory sqlSessionFactory(@Qualifier("phoenixDataSource") DataSource dataSource) throws Exception {
MybatisSqlSessionFactoryBean sqlSessionFactory = new MybatisSqlSessionFactoryBean();
sqlSessionFactory.setDataSource(dataSource);
MybatisConfiguration configuration = new MybatisConfiguration();
configuration.setDefaultScriptingLanguage(MybatisXMLLanguageDriver.class);
configuration.setJdbcTypeForNull(JdbcType.NULL);
sqlSessionFactory.setConfiguration(configuration);
sqlSessionFactory.setMapperLocations(new PathMatchingResourcePatternResolver()
.getResources("classpath*:com/zklt/bigdata/web/phoenix/dao/*.xml"));
sqlSessionFactory.setPlugins(new Interceptor[]{
new PaginationInterceptor(),
new PerformanceInterceptor(),
new OptimisticLockerInterceptor()
});
return sqlSessionFactory.getObject();
}
不同数据源配置不同dao接口主要是设置这个
sqlSessionFactory.setMapperLocations(new PathMatchingResourcePatternResolver()
.getResources("classpath*:com/zklt/bigdata/web/phoenix/dao/*.xml"));
对了，随便放个多数据源配，使用阿里巴巴的druid，一个mysql数据源，一个phoenix（hbase）数据源
package com.zklt.bigdata.config;
import com.alibaba.druid.pool.DruidDataSource;
import com.alibaba.druid.spring.boot.autoconfigure.DruidDataSourceBuilder;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
import org.springframework.core.env.Environment;
import org.springframework.jdbc.core.JdbcTemplate;
import javax.sql.DataSource;
/**
* @Description: 多数据源配置 //// druid配置
* @Author: peng.liu
* @CreateDate: 2018/5/3 10:23
*/
@Configuration
public class DruidConfig {
@Autowired
private Environment env;
//-----------数据源配置--------------
//mysql
@Primary
@Bean("mysqlDataSource")
@Qualifier("mysqlDataSource")
@ConfigurationProperties("spring.datasource.druid.mysql")
public DataSource mysqlDataSource() {
return DruidDataSourceBuilder.create().build();
}
//phoenix
@Bean("phoenixDataSource")
@Qualifier("phoenixDataSource")
// @ConfigurationProperties("spring.datasource.druid.phoenix")
public DataSource phoenixDataSource() {
DruidDataSource dataSource = new DruidDataSource();
dataSource.setDriverClassName(env.getProperty("spring.datasource.druid.phoenix.driver-class-name"));
dataSource.setUrl(env.getProperty("spring.datasource.druid.phoenix.url"));
return dataSource;
}
//---------JdbcTemplate配置------------------
//mysql
@Bean(name = "mysqlJdbcTemplate")
public JdbcTemplate mysqlJdbcTemplate(@Qualifier("mysqlDataSource") DataSource dataSource) {
return new JdbcTemplate(dataSource);
}
//phoenix
@Bean(name = "phoenixJdbcTemplate")
public JdbcTemplate phoenixJdbcTemplate(@Qualifier("phoenixDataSource") DataSource dataSource) {
return new JdbcTemplate(dataSource);
}
}
最后测试一下，junit
package com.zklt.bigdata.web.mybatisplus;
import com.zklt.bigdata.utils.JsonUtil;
import com.zklt.bigdata.web.demo.bean.TestBean;
import com.zklt.bigdata.web.demo.dao.TestBean4MybatisPlusDao;
import com.zklt.bigdata.web.phoenix.bean.Test1Bean;
import com.zklt.bigdata.web.phoenix.dao.Test1Bean4MybatisPlusDao;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;
/**
* @Description:
* @Author: peng.liu
* @CreateDate: 2018/5/4 11:01
*/
@RunWith(SpringRunner.class)
@SpringBootTest
public class Test1Bean4MybatisPlusDaoTest {
@Autowired
private TestBean4MybatisPlusDao dao;
@Autowired
private Test1Bean4MybatisPlusDao dao1;
@Test
public void test() {
TestBean testBean = dao.selectById(1);
System.err.println(JsonUtil.toString(testBean));
}
@Test
public void test1(){
Test1Bean test1Bean = dao1.selectById(1001);
System.err.println(JsonUtil.toString(test1Bean));
}
}