java之mybatisPlus 分佈式時候的手動配置

import com.alibaba.druid.pool.DruidDataSourceFactory;
import com.baomidou.mybatisplus.core.MybatisConfiguration;
import com.baomidou.mybatisplus.extension.plugins.OptimisticLockerInterceptor;
import com.baomidou.mybatisplus.extension.plugins.PaginationInterceptor;
import com.baomidou.mybatisplus.extension.spring.MybatisSqlSessionFactoryBean;
import org.apache.ibatis.logging.stdout.StdOutImpl;
import org.apache.ibatis.session.SqlSessionFactory;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.env.Environment;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import org.springframework.transaction.annotation.EnableTransactionManagement;

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

/**
 * 配置文件
 *
 * @author sunwen
 * @version 1.0
 * @date 2019/8/5 15:19
 **/
@EnableTransactionManagement
@Configuration
@MapperScan(basePackages = {"com.yixing.*.dao", "com.baomidou.cloud.service.*.mapper*"})
public class MyBatisConfig {

    @Resource
    private Environment env;

    @Bean
    public DataSource getDataSource() {
        Properties props = new Properties();
        props.put("driverClass", env.getProperty("jdbc.driverClass"));
        props.put("url", env.getProperty("jdbc.url"));
        props.put("username", env.getProperty("jdbc.username"));
        props.put("password", env.getProperty("jdbc.password"));
        props.put("maxWait", env.getProperty("jdbc.maxWait"));
        props.put("maxActive", env.getProperty("jdbc.maxActive"));
        props.put("minIdle", env.getProperty("jdbc.minIdle"));
        props.put("initialSize", env.getProperty("jdbc.initialSize"));
        props.put("timeBetweenEvictionRunsMillis", env.getProperty("jdbc.timeBetweenEvictionRunsMillis"));
        props.put("minEvictableIdleTimeMillis", env.getProperty("jdbc.minEvictableIdleTimeMillis"));
        try {
            return DruidDataSourceFactory.createDataSource(props);
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }


    /**
     * @Title: sqlSessionFactory @Description:
     * 根據數據源創建SqlSessionFactory @param @param
     * ds @param @return @param @throws Exception @return
     * SqlSessionFactory @throws
     */
    @Bean
    public SqlSessionFactory sqlSessionFactory(DataSource dataSource) throws Exception {
        MybatisSqlSessionFactoryBean msfb = new MybatisSqlSessionFactoryBean();
        msfb.setDataSource(dataSource);
        {
            MybatisConfiguration configuration = new MybatisConfiguration();
            configuration.setLogImpl(StdOutImpl.class);
            msfb.setConfiguration(configuration);
        }
        msfb.setMapperLocations(new PathMatchingResourcePatternResolver().getResources(env.getProperty("mybatis.mapperLocations")));
        return msfb.getObject();
    }

    /**
     * 分頁插件
     */
    @Bean
    public PaginationInterceptor paginationInterceptor() {
        return new PaginationInterceptor();
    }

    /**
     * 樂觀所
     */
    @Bean
    public OptimisticLockerInterceptor optimisticLockerInterceptor() {
        return new OptimisticLockerInterceptor();
    }
}

其實就是接管了SqlSessionFactory的初始化過程。