package d706;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.TimeZone;
/*
* 使用JMeter測(cè)試mysql數(shù)據(jù)庫(kù)性能,插入數(shù)據(jù)的程序。
* 本程序?qū)⒃诳裳b入表中插入 10,000條記錄。然后編譯并執(zhí)行這段代碼,
* 用測(cè)試數(shù)據(jù)填充可裝入數(shù)據(jù)表。
*
* 建表語(yǔ)句:create table TEST_DB(id int auto_increment primary key, name varchar(20), sex char(1) );
*
* 表TEST_DB 增加列test: alter table TEST_DB add(sex char(10));
* 表TEST_DB 修改列test: alter table TEST_DB modify sex char(20) not null;
* 表TEST_DB 刪除列test: alter table TEST_DB drop column sex;
*
*/
public class Test_DB_Insert {
public static void main(String[] args){
int numOfTestRecords; // 插入數(shù)據(jù)量;
Connection con = null; // 連接數(shù)據(jù)庫(kù);
PreparedStatement statement = null; // 獲取數(shù)據(jù)庫(kù)操作對(duì)象;
try {
//注冊(cè)驅(qū)動(dòng);
Class.forName("com.mysql.jdbc.Driver");
//連接數(shù)據(jù)庫(kù)的信息;
String dbName = "test";
String url = "jdbc:mysql://127.0.0.1:3306/" + dbName;
String userName = "root";
String pwd = "root";
//獲取數(shù)據(jù)庫(kù)連接;
con = DriverManager.getConnection(url,userName, pwd);
con.setAutoCommit(false); //關(guān)閉事務(wù)自動(dòng)提交
//記錄執(zhí)行時(shí)間
SimpleDateFormat sdf = new SimpleDateFormat("HH:mm:ss:SS");
TimeZone t = sdf.getTimeZone();
t.setRawOffset(0);
sdf.setTimeZone(t);
Long startTime = System.currentTimeMillis();
//創(chuàng)建數(shù)據(jù)庫(kù)操作對(duì)象;
statement = con.prepareStatement("INSERT INTO TEST_DB(name,sex) VALUES(?,?)");
numOfTestRecords = 100; //插入的測(cè)試數(shù)據(jù)量;
for(int i = 0; i<numOfTestRecords; i++) { //循環(huán)
statement.setString(1,"DBTest-" + i);
statement.setString(2,"" + i%2); //0表示男;1表示女.
statement.addBatch(); // 把一個(gè)SQL命令加入命令列表
//statement.executeUpdate(); //執(zhí)行SQL;
}
statement.executeBatch(); //執(zhí)行批量更新
con.commit();//語(yǔ)句執(zhí)行完畢,提交事務(wù)
int[] ref = statement.executeBatch();
//if(ref[numOfTestRecords-1] == 0){System.out.println("插入數(shù)據(jù)操作完成.");} //
System.out.println("插入數(shù)據(jù)操作完成.");
Long endTime = System.currentTimeMillis();
System.out.println("用時(shí):" + sdf.format(new Date(endTime - startTime))); //
}catch(Exception e) {
System.out.println("An error has occurred: " + e.toString());
e.printStackTrace();
}finally{
if(statement != null){ //關(guān)閉數(shù)據(jù)庫(kù)操作對(duì)象
try{
statement.close();
}catch(SQLException se){
se.printStackTrace();
}
}
if(con != null){ //關(guān)閉數(shù)據(jù)庫(kù)連接
try{
if(con.isClosed()){con.close();} //
}catch(SQLException se){
se.printStackTrace();
}
}
}
}
}