jdbc学习(四)：事务处理

今天学习了事务处理，跟着书本做了简单的demo.

基本流程如下：
事务处理演示 1. connection db
             2. getConnection
             3. createStatement
             4. 设置autocomit(false)
             5. execute sql update or query etc.
             6. conn.comit() 正式提交, 数据库执行
             7. 如果操作事务，conn.rollBack(), 一旦操作失误，就撤销操作，进行回滚
             8. 关闭相关的statement, connection(时间仓促，没有实现)

/**
 * 
 */
package db;

import java.io.FileNotFoundException;
import java.io.IOException;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.sql.Statement;

/**
 * @author sean
 * 
 *         事务处理演示 1. connection db 2. getConnection 3. createStatement 4.
 *         设置autocomit(false) 5. execute sql update or query etc. 6.
 *         conn.comit() 正式提交, 数据库执行 7. 如果操作事务，conn.rollBack(), 一旦操作失误，就撤销操作，进行回滚
 *         8. 关闭相关的statement, connection
 * 
 */
public class TransactionDemo {

	static DBSource dbSource;
	static Connection conn;

	private static String insertSql = "insert into user values('13','sean','[e-mail]','hellofromsean')";
	private static String insertSql2 = "insert into user values('14','sean','[e-mail]','hellofromsean')";

	/**
	 * @param args
	 * 
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub

		try {
			dbSource = new SimpleDBSource();
			conn = dbSource.getConnect();
			Statement stmt = conn.createStatement();

			conn.setAutoCommit(false);    //设置非自动提交

			
			stmt.executeUpdate(insertSql);
			stmt.executeUpdate(insertSql2);

			conn.commit(); 				  // 提交事务，开始执行
			System.out.println("事务执行成功");
		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (ClassNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			try {
				conn.rollback(); // 事务回滚撤销
			} catch (SQLException e1) {
				// TODO Auto-generated catch block
				e1.printStackTrace();
			}
			e.printStackTrace();
		}

	}

}