《软件测试》实验五：测试技术

package org.easybooks.bookstore.jdbc;

import java.sql.*;

public class MySQLConnBean {
	private Statement stmt=null;
	private Connection conn=null;
	private ResultSet rs=null;
	
	//通过驱动、MySQL的用户名密码打开数据库连接
	public void openConn() throws Exception {		Class.forName("com.mysql.jdbc.Driver");
		String url="jdbc:mysql://localhost:3306/test";
		String user="root";
		String password="123456";
		conn=DriverManager.getConnection(url, user, password);
	}
	
	//执行数据库语句，并返回结果集
	public ResultSet execQuery(String sql){		rs=null;
		try{
			stmt=conn.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE, ResultSet.CONCUR_READ_ONLY);
			rs=stmt.executeQuery(sql);
		}catch (SQLException e) {
			System.err.println("Data.executeQuery:"+e.getMessage());
		}
		
		return rs;
	}
	//关闭statement
	public void closeStmt(){ 
		try{
			stmt.close();
		}catch(SQLException e){
			System.err.println("Data.executeQuery:"+e.getMessage());
		}
	}
	//关闭数据库连接
	public void closeConn(){
		try{
			conn.close();
		}catch(SQLException e){
			System.err.println("Data.executeQuery:"+e.getMessage());
		}
	}
}