import java.sql.Connection;
import java.sql.PreparedStatement;
import org.junit.Test;
import com.kk.jdbc.JDBCTools;
public class JDBCTest {
/*
* 向表中插入多条记录
*/
@Test
public void testBatchWithStatement() {
Connection con = null;
PreparedStatement ps = null;
String sql = null;
try {
con = JDBCTools.getConnection();
JDBCTools.beginTx(con);
sql = “insert into users values (?,?,?,?)”;
ps = con.prepareStatement(sql);
long begin = System.currentTimeMillis();
for (int i = 0; i < 1000; i++) {
ps.setInt(1, i + 1);
ps.setString(2, “name_” + i);
ps.setString(3, “pass_” + i);
ps.setInt(4, i++);
ps.executeUpdate();
}
long end = System.currentTimeMillis();
System.out.println(“Time:” + (end – begin));
JDBCTools.commit(con);
} catch (Exception e) {
JDBCTools.rollback(con);
} finally {
JDBCTools.release(null, ps, con);
}
}
@Test
public void testBatch() {
Connection con = null;
PreparedStatement ps = null;
String sql = null;
try {
con = JDBCTools.getConnection();
JDBCTools.beginTx(con);
sql = “insert into users values (?,?,?,?)”;
ps = con.prepareStatement(sql);
long begin = System.currentTimeMillis();
for (int i = 0; i < 1000; i++) {
ps.setInt(1, i + 1);
ps.setString(2, “name_” + i);
ps.setString(3, “pass_” + i);
ps.setInt(4, i++);
//积攒SQL,当积攒到30就统一执行一次，并清空
ps.addBatch();
if ((i+1)%30==0) {
ps.executeBatch();
ps.clearBatch();
}
}
//若总条数不是批量数的整条数，则还需要再额外执行一次
if (1000%300!=0) {
ps.executeBatch();
ps.clearBatch();
}
long end = System.currentTimeMillis();
System.out.println(“Time:” + (end – begin));
JDBCTools.commit(con);
} catch (Exception e) {
JDBCTools.rollback(con);
} finally {
JDBCTools.release(null, ps, con);
}
}
}
