spring boot 使用javaconfig配置mybatis，pagehelper

1. 配置pom.xml

    org.springframework.boot
    spring-boot-starter


    org.mybatis.spring.boot
    mybatis-spring-boot-starter
    1.1.1


    mysql
    mysql-connector-java
    5.1.21


    org.mybatis
    mybatis
    3.4.5


    org.mybatis
    mybatis-spring
    1.3.1



    com.github.pagehelper
    pagehelper
    5.1.2

2.编辑javaconfig文件

import com.github.pagehelper.PageInterceptor;
import org.apache.ibatis.plugin.Interceptor;
import org.apache.ibatis.session.SqlSessionFactory;
import org.mybatis.spring.SqlSessionFactoryBean;
import org.mybatis.spring.SqlSessionTemplate;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.boot.autoconfigure.jdbc.DataSourceBuilder;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import org.springframework.jdbc.datasource.DataSourceTransactionManager;
import org.mybatis.spring.mapper.MapperScannerConfigurer;

import javax.sql.DataSource;
import java.util.Properties;

/**
 * Created by zmc on.2017年12月22日 14:58:34
 */
@Configuration
@MapperScan(basePackages = "com.my.boot.test.mapper", sqlSessionTemplateRef  = "mybatisMasterSqlSessionTemplate")
public class MybatisDataSourceConfig {

    @Bean
    public DataSourceTransactionManager transactionManager(DataSource dataSource) {
        return new DataSourceTransactionManager(dataSource);
    }

    @Bean(name = "mybatisMasterDataSource")
    @ConfigurationProperties(prefix = "datasource")
    public DataSource mybatisMasterDataSource() {
//        return new DriverManagerDataSource("jdbc:mysql://localhost:3306/test","root","root");
        return DataSourceBuilder.create().build();
    }

    @Bean(name = "mybatisMasterSqlSessionFactory")
    public SqlSessionFactory mybatisMasterSqlSessionFactory(@Qualifier("mybatisMasterDataSource") DataSource dataSource) throws Exception {
        SqlSessionFactoryBean bean = new SqlSessionFactoryBean();
        bean.setDataSource(dataSource);
        bean.setMapperLocations(new PathMatchingResourcePatternResolver().getResources("classpath*:com.mybatis.mapper/*.xml"));

        // 设置MyBatis分页插件
        PageInterceptor pageInterceptor = this.initPageInterceptor();
        bean.setPlugins(new Interceptor[]{pageInterceptor});

        return bean.getObject();
    }

    @Bean
    public MapperScannerConfigurer mapperScannerConfigurer(){
        MapperScannerConfigurer mScannerConfigurer = new MapperScannerConfigurer();
        mScannerConfigurer.setSqlSessionFactoryBeanName("mybatisMasterSqlSessionFactory");
        mScannerConfigurer.setBasePackage("com.my.boot.test.entity");
        mScannerConfigurer.setBasePackage("com.my.boot.test.mapper");
        return mScannerConfigurer;
    }

    @Bean(name = "mybatisMasterTransactionManager")
    public DataSourceTransactionManager mybatisMasterTransactionManager(@Qualifier("mybatisMasterDataSource") DataSource dataSource) {
        return new DataSourceTransactionManager(dataSource);
    }

    @Bean(name = "mybatisMasterSqlSessionTemplate")
    public SqlSessionTemplate mybatisMasterSqlSessionTemplate(@Qualifier("mybatisMasterSqlSessionFactory") SqlSessionFactory sqlSessionFactory) throws Exception {
        return new SqlSessionTemplate(sqlSessionFactory);
    }

    public PageInterceptor initPageInterceptor(){
        PageInterceptor pageInterceptor = new PageInterceptor();
        Properties properties = new Properties();
        properties.setProperty("helperDialect", "mysql");
        properties.setProperty("offsetAsPageNum", "true");
        properties.setProperty("rowBoundsWithCount", "true");
        pageInterceptor.setProperties(properties);
        return pageInterceptor;
    }

}