usermgr.java

采用Jsp,Javabean,Servlet等做的人力资源管理系统,后台管理用户及密码均是:admin

package dbmgr;

import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.*;
import userbean.User;
public class UserMgr {
	 //创建公用数据库连接类对象
	DBConMgr db_conn=new DBConMgr(); 
		   
	//通过用户名称和密码获取用户信息
	public int get(String loadname, String password,String styl) {
		
		db_conn.ConnectDB();
		
		try {
			
			String sql = "select * from rolemanage where Loadname = '"
					+ loadname + "' and Password='" + password + "' and role='" +styl+"'";
			System.out.println(sql);
			ResultSet rs= db_conn.stmt.executeQuery(sql);
			
			if(rs.next())return 1;
			else return -1;
			
	}
		catch (SQLException SqlE){
		SqlE.printStackTrace();
		return -1;
	} 
	catch (Exception E) {
		E.printStackTrace();
		return -2;
	} 
	finally {
		// 关闭连接，释放数据库资源：
		db_conn.CloseDB();
	}

}
}