日期:2014-05-16  浏览次数:20354 次

Java JDBC基础(五)

?1.JDBC批处理

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package com.yli.demo;

import java.sql.Connection;
import java.sql.SQLException;
import java.sql.Statement;

/**
 * 简单批处理测试
 * @author yli
 *
 */
public class BatchTest {

	public static void main(String[] args) {
		// Test1();
		Test2();
	}

	/**
	 * 非事务测试<br>
	 * 批处理操作不能包含查询SQL,否则会抛出异常<br>
	 * 批处理返回的结果是整型数组,表示每一条SQL语句执行成功后受影响的记录条数
	 */
	public static void Test1() {
		try {
			Connection conn;
			conn = ConnectionUtil.getConnection();

			String sql = "update es_t_shop_affiche set affichetitle='admin' where afficheid=100001";
			Statement stat = conn.createStatement();
			stat.addBatch(sql);

			sql = "update es_t_shop_affiche set affichetitle='root' where afficheid=100002";
			stat.addBatch(sql);

			int[] count = stat.executeBatch();
			for (int i = 0; i < count.length; i++) {
				System.out.println(count[i]);
			}
			
			ConnectionUtil.close(conn);

		} catch (SQLException e) {
			e.printStackTrace();
		}
	}

	/**
	 * 批处理操作必须视为一个事务
	 */
	public static void Test2() {
		try {
			Connection conn;
			conn = ConnectionUtil.getConnection();
			boolean autoCommit = conn.getAutoCommit();
			conn.setAutoCommit(false);

			String sql = "update es_t_shop_affiche set affichetitle='aaa' where afficheid=100001";
			Statement stat = conn.createStatement();
			stat.addBatch(sql);

			sql = "update es_t_shop_affiche set affichetitle='bbb' where afficheid=100002";
			stat.addBatch(sql);

			int[] count = stat.executeBatch();
			for (int i = 0; i < count.length; i++) {
				System.out.println(count[i]);
			}
			
			conn.commit();
			// 将是否自动提交属性还原
			conn.setAutoCommit(autoCommit);
			
			ConnectionUtil.close(conn);

		} catch (SQLException e) {
			e.printStackTrace();
		}
	}

}

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