spring boot & mybatis 集成 方法一

package com.s2u2m;

import javax.sql.DataSource;

import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.log4j.Logger;
import org.mybatis.spring.SqlSessionFactoryBean;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.boot.web.support.SpringBootServletInitializer;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import org.springframework.jdbc.datasource.DataSourceTransactionManager;
import org.springframework.transaction.PlatformTransactionManager;

import com.s2u2m.laboruser.common.Constant;
import com.s2u2m.laboruser.util.CommonUtil;
import lombok.extern.slf4j.Slf4j;

@MapperScan("com.s2u2m.dao")
@SpringBootApplication
@Slf4j
public class LaborUnionApplication extends SpringBootServletInitializer {

   @Override
   protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
      return application.sources(LaborUnionApplication.class);
   }


   public static void main(String[] args) {
      SpringApplication.run(LaborUnionApplication.class, args);
   }

   @Bean
   @ConfigurationProperties(prefix = "spring.datasource")
   public DataSource dataSource() {
      return new org.apache.tomcat.jdbc.pool.DataSource();
   }

   @Bean
   public SqlSessionFactory sqlSessionFactoryBean() throws Exception {

      SqlSessionFactoryBean sqlSessionFactoryBean = new SqlSessionFactoryBean();
      sqlSessionFactoryBean.setDataSource(dataSource());
      PathMatchingResourcePatternResolver resolver = new PathMatchingResourcePatternResolver();
      sqlSessionFactoryBean
         .setMapperLocations(resolver.getResources("classpath:/mapping/**/*.xml"));
      return sqlSessionFactoryBean.getObject();
   }

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

}