PrepareStatement跟Batch性能
package test;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.sql.Statement;
import com.fastbo.util.Clock;
import com.fastbo.util.ConnectionFactory;
import com.fastbo.util.DbUtil;
/**
* Description: Jdbc相关性能测试,batch处理，PrepareStatement，Statement等。
*
* <p>
* Mysql数据库：表结构为简单的id,name(varchar:255),type(varchar:255)字段，id自增
* </p>
*
* @author Peter Wei Email: <a href="mailto:weigbo@163.com">weigbo@163.com </a>
*
* @version 1.0 2010-8-21
*/
public class JdbcTest {
/**
* 测试数据量
*/
public static int TEST_NUM = 10000;
/**
* 批处理大小
*/
public static int BATCH_SIZE = 300;
/**
* 清空数据表
*
* @param con
*/
public static void clear(Connection con) {
PreparedStatement ps = null;
StringBuffer buff = new StringBuffer();
try {
buff.append("truncate table bobo");
ps = con.prepareStatement(buff.toString());
ps.executeUpdate();
System.out.println("清空表");
} catch (SQLException e) {
e.printStackTrace();
} finally {
DbUtil.close(ps);
}
}
/**
* 普通的Statement插入数据
*
* @param con
*/
public static int add(Connection con) {
Statement stmt = null;
int num = 0;
String sql = "insert into bobo(name,type) values('Peter Wei','test')";
try {
stmt = con.createStatement();
for (int i = 0; i < TEST_NUM; i++) {
num += stmt.executeUpdate(sql);
}
System.out.println("插入数据量：" + num);
} catch (SQLException e) {
e.printStackTrace();
} finally {
DbUtil.close(stmt);
}
return num;
}
/**
* 用PrepareStatement插入数据
*
* @param con
*/
public static void addByPrepareStatement(Connection con) {
PreparedStatement ps = null;
StringBuffer buff = new StringBuffer();
int num = 0;
try {
buff.append("insert into bobo(name,type)");
buff.append(" values(?,?)");
ps = con.prepareStatement(buff.toString());
con.setAutoCommit(false);
for (int i = 0; i < TEST_NUM; i++) {
int index = 1;
ps.setString(index++, "Peter Wei");
ps.setString(index++, "test");
num += ps.executeUpdate();
}
con.commit();
con.setAutoCommit(true);
System.out.println("插入数据量：" + num);
} catch (SQLException e) {
e.printStackTrace();
} finally {
DbUtil.close(ps);
}
}
/**
* 用批处理插入数据
*
* @param con
*/
public static void addByBatch(Connection con) {
PreparedStatement ps = null;
StringBuffer buff = new StringBuffer();
int sum = 0;
int[] num = null;
try {
buff.append("insert into bobo(name,type) values(?,?)");
con.setAutoCommit(false);
ps = con.prepareStatement(buff.toString());
for (int i = 0; i < TEST_NUM; i++) {
int index = 1;
ps.setString(index++, "Peter Wei");
ps.setString(index++, "test");
ps.addBatch();
if (i != 0 && i % BATCH_SIZE == 0) {
num = ps.executeBatch();
sum += num.length;
con.commit();
// System.out.println("batch:" + i);
}
}
num = ps.executeBatch();
sum += num.length;
con.commit();
con.setAutoCommit(true);
System.out.println("批量更新成功 " + sum + " 条记录!");
} catch (SQLException e) {
e.printStackTrace();
} finally {
DbUtil.close(ps);
}
}
public static void main(String[] args) {
Connection con = ConnectionFactory.getConnection();
clear(con);
Clock c = new Clock();
// 普通的Statement插入数据
System.out.println("普通的Statement插入数据:");
c.start();
add(con);
c.stop();
System.out.println(c.toString());
c.readMilli();
System.out.println(c.read());
System.out.println("================================");
clear(con);
// 通过PrepareStatement插入数据
System.out.println("通过PrepareStatement插入数据:");
c = new Clock();
c.start();
addByPrepareStatement(con);
c.stop();
System.out.println(c.toString());
c.readMilli();
System.out.println(c.read());
System.out.println("================================");
clear(con);
// 用批处理插入数据
System.out.println("用批处理插入数据:");
c = new Clock();
c.start();
addByBatch(con);
c.stop();
System.out.println(c.toString());
c.readMilli();
System.out.println(c.read());
System.out.println("================================");
}
}