mybatis研究：select性能对比

 package sss.mybatis_1;

 import java.io.InputStream;
 import java.security.Principal;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Properties;
 import java.sql.*;

 import com.mysql.jdbc.ConnectionImpl;
 import com.mysql.jdbc.JDBC4Connection;
 import com.mysql.jdbc.JDBC4MySQLConnection;
 //import org.apache.commons.lang.time.StopWatch;
 import com.sun.javafx.Logging;
 import org.apache.commons.dbcp.BasicDataSource;
 import org.apache.commons.dbcp.DataSourceConnectionFactory;
 import org.apache.commons.lang3.time.StopWatch;
 import org.apache.ibatis.io.Resources;
 import org.apache.ibatis.session.Configuration;
 import org.apache.ibatis.session.SqlSession;
 import org.apache.ibatis.session.SqlSessionFactory;
 import org.apache.ibatis.session.SqlSessionFactoryBuilder;

 import org.apache.ibatis.transaction.TransactionFactory;
 import org.apache.ibatis.transaction.jdbc.JdbcTransactionFactory;

 import javax.sql.DataSource;

 /**
  * Created by fenggq on 2016/3/2.
  */
 public class PerformanceTest {

     public class Record {

         public int Times;

         public long OpenSessionEveryTime_XMLMapper;
         public long OpenSessionOneTime_XMLMapper;
         public long OpenSessionOneTime_AnnotionMapper;
         public long OpenSessionEveryTime_AnnotionMapper;
         public long JDBCOneTime;
         public long JDBCEveryTime;
         public long BDCPOneTime;

     }

     public static void main(String[] args) throws Exception {
         PerformanceTest performanceTest = new PerformanceTest();
         performanceTest.Test();
     }

     private void Test() throws Exception {
         {

           //org.apache.ibatis.logging.LogFactory.useLog4J2Logging();
             //             org.apache.ibatis.logging.LogFactory.useJdkLogging();

             InputStream is = Resources.getResourceAsStream("mybatis-config.xml");

             SqlSessionFactory sqlSessionFactory = null;
             SqlSessionFactoryBuilder sqlSessionFactoryBuilder = new SqlSessionFactoryBuilder();
             sqlSessionFactory = sqlSessionFactoryBuilder.build(is);

             is.close();
             StopWatch sw1 = new StopWatch();

             fgq.mybatis_1.UI ui;
             UI2 ui2;

             List<?> result;

             SqlSession sqlSession = null;

             //region 为了公平，SessionFactory预先加载
             sqlSession = sqlSessionFactory.openSession();
             ui = sqlSession.selectOne("selectbutton", "buttonAdd");
             UI2Mapper ui2Mapper = sqlSession.getMapper(UI2Mapper.class);
             sqlSession.close();
             //endregion

             Integer times = 10;
             ArrayList<Integer> AllTime = new ArrayList<Integer>();
             ArrayList<Record> records = new ArrayList<Record>();
             Record record;

             AllTime.add(1);
             AllTime.add(2);
             AllTime.add(10);
             AllTime.add(100);
             AllTime.add(200);
             AllTime.add(1000);

             for (int ii = 0; ii < AllTime.size(); ii++) {

                 times = AllTime.get(ii);
                 record = new Record();
                 records.add(record);
                 record.Times = times;

 ///////////////////////////////////////////////

                 sw1.start();
                 for (Integer i = 0; i < times; i++) {
                     sqlSession = sqlSessionFactory.openSession();
                     ui = sqlSession.selectOne("selectbutton", "buttonAdd" + i);
                     sqlSession.close();
                 }
                 record.OpenSessionEveryTime_XMLMapper = sw1.getTime();
                 sw1.stop();
                 sw1.reset();

 //////////////////////////////////////////
                 sw1.start();
                 sqlSession = sqlSessionFactory.openSession();
                 for (Integer i = 0; i < times; i++) {

                     ui = sqlSession.selectOne("selectbutton", "buttonAdd" + i);

                 }
                 sqlSession.close();

                 record.OpenSessionOneTime_XMLMapper = sw1.getTime();
                 sw1.stop();
                 sw1.reset();

 //////////////////////////////////////////

                 sw1.start();
                 sqlSession = sqlSessionFactory.openSession();
                 ui2Mapper = sqlSession.getMapper(UI2Mapper.class);

                 for (Integer i = 0; i < times; i++) {
                     ui2 = ui2Mapper.SelectOne("buttonAdd" + i);
                 }
                 sqlSession.close();
                 //System.out.println("OpenSessionOneTime_AnnotionMapper:" + sw1.getTime());
                 record.OpenSessionOneTime_AnnotionMapper = sw1.getTime();
                 sw1.stop();
                 sw1.reset();
 //////////////////////////////////////////

                 sw1.start();

                 for (Integer i = 0; i < times; i++) {
                     sqlSession = sqlSessionFactory.openSession();
                     ui2Mapper = sqlSession.getMapper(UI2Mapper.class);
                     ui2 = ui2Mapper.SelectOne("buttonAdd" + i);
                     sqlSession.close();
                 }

                 //System.out.println("OpenSessionEveryTime_AnnotionMapper:" + sw1.getTime());
                 record.OpenSessionEveryTime_AnnotionMapper = sw1.getTime();
                 sw1.stop();
                 sw1.reset();
 //////////////////////////////////////////

                 // 驱动程序名
                 String driver = "com.mysql.jdbc.Driver";
                 String uri = "jdbc:mysql://*******:*********/*********";

                 Properties p = new Properties();

                 p.setProperty("username", "root");
                 p.setProperty("password", "oracle");

                 Connection connection;

                 sw1.reset();
                 sw1.start();
                 connection = DriverManager.getConnection(uri, "root", "oracle");
                 for (Integer i = 0; i < times; i++) {

                     PreparedStatement s = connection.prepareStatement("select e.button_id,e.text_value\n" +
                             "        from kingkoo_wms.ui_button e\n" +
                             "        WHERE e.button_id=?");

                     s.setString(1, "buttonAdd" + i);
                     ResultSet rs = s.executeQuery();

                     while (rs.next()) {

                 ui = new fgq.mybatis_1.UI();
                 ui.setButton_id(rs.getString("button_id"));
                 ui.setText_value(rs.getString("text_value"));

                     }

                 }
                 connection.close();

                 record.JDBCOneTime = sw1.getTime();
                 sw1.stop();
                 sw1.reset();

 //////////////////////////////////////////////////////////////////

                 sw1.start();

                 for (Integer i = 0; i < times; i++) {
                     connection = DriverManager.getConnection(uri, "root", "oracle");

                     PreparedStatement s = connection.prepareStatement("select e.button_id,e.text_value\n" +
                             "        from kingkoo_wms.ui_button e\n" +
                             "        WHERE e.button_id=?");

                     s.setString(1, "buttonAdd" + i);
                     ResultSet rs = s.executeQuery();

                     while (rs.next()) {

                 ui = new fgq.mybatis_1.UI();
                 ui.setButton_id(rs.getString("button_id"));
                 ui.setText_value(rs.getString("text_value"));

                     }
                     connection.close();
                 }

                 record.JDBCEveryTime = sw1.getTime();
                 sw1.stop();
                 sw1.reset();

 //////////////////////////////////////////////////////////////////

                 org.apache.commons.dbcp.BasicDataSource dataSource = new BasicDataSource();
                 dataSource.setDriverClassName("com.mysql.jdbc.Driver");
                 dataSource.setUrl("jdbc:mysql://*******:*****/*******");
                 dataSource.setUsername("root");
                 dataSource.setPassword("oracle");

                 org.apache.commons.dbcp.DataSourceConnectionFactory dataSourceConnectionFactory = null;

                 dataSourceConnectionFactory = new DataSourceConnectionFactory(dataSource);
                 connection = dataSourceConnectionFactory.createConnection();

                 sw1.start();
                 for (Integer i = 0; i < times; i++) {

                     PreparedStatement s = connection.prepareStatement("select e.button_id,e.text_value\n" +
                             "        from kingkoo_wms.ui_button e\n" +
                             "        WHERE e.button_id=?");

                     s.setString(1, "buttonAdd" + i);
                     ResultSet rs = s.executeQuery();

                     while (rs.next()) {

                         ui = new fgq.mybatis_1.UI();
                         ui.setButton_id(rs.getString("button_id"));
                         ui.setText_value(rs.getString("text_value"));

                     }

                 }

                 connection.close();

                 record.BDCPOneTime = sw1.getTime();

                 sw1.stop();
                 sw1.reset();

             }

             System.out.println(String.format("%s %s %s %s %s %s %s %s", "Times", "BDCPOneTime", "JDBCEveryTime", "JDBCOneTime", "OpenSessionEveryTime_AnnotionMapper", "OpenSessionEveryTime_XMLMapper"
                     , "OpenSessionOneTime_AnnotionMapper", "OpenSessionOneTime_XMLMapper"
             ));

             for (int i = 0; i < records.size(); i++) {
                 record = records.get(i);

                 System.out.println(String.format("%d %d %d %d %d %d %d %d"
                         , record.Times, record.BDCPOneTime, record.JDBCEveryTime, record.JDBCOneTime, record.OpenSessionEveryTime_AnnotionMapper, record.OpenSessionEveryTime_XMLMapper
                         , record.OpenSessionOneTime_AnnotionMapper, record.OpenSessionOneTime_XMLMapper
                 ));

             }

         }

     }
 }
  

<mapper namespace="org.mybatis.example.BlogMapper">
    <resultMap id="BlogMapper" type="fgq.mybatis_1.UI">
        <id column="button_id" property="button_id"  ></id>
    </resultMap>
    <select id="selectbutton"   resultType="fgq.mybatis_1.UI" useCache="false">
        select e.button_id,e.text_value
        from mysql_test.ui_button e
        WHERE e.button_id=#{id}

    </select>

</mapper>

xml mapper

public interface UI2Mapper {

    @Select("select e.button_id,e.text_value from mysql_test.ui_button e WHERE e.button_id=#{id}")
    @Options( useCache = false)
    UI2 SelectOne(String id);

}

　　

从结果看，mybatis方式的select比原生态的代码，速度慢两倍，相比dapper而言差距还是很大的。 (https://github.com/StackExchange/dapper-dot-net)

不过两者可比性不大，毕竟不是同一种东西，功能也不一样。