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。

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