开始设计一个系统，首页没有登陆界面，只有管理员在管理界面登陆后直接跳转后到管理界面，原来管理员有一个表，现在重新建一个普通人员登陆表，怎样改写如下的登陆JAVABEAN可以实现，设计后的登陆界面是有选择的，如果是选择管理员就登陆到管理界面，如果是普通人员登陆就转到首页。
/*
* Created on 2004-9-20
*
* To change the template for this generated file go to
* Window>Preferences>Java>Code Generation>Code and Comments
*/
package util;
import news.sql_data;
import news.strFormat;
import java.sql.*;/**
* Title: 用户登录信息检查
* Description:
* Copyright: Copyright (c) 2004
* @author: ning
* @version 1.0
*/public class login {
private String username; //登录用户名
private String passwd; //登录密码
private long userid=0; //用户ID号
private String authority; //用户权限
String sqlStr; //检索数据库SQL语句
sql_data sqlbean=new sql_data();
public static void main (String [] args) {}
public login() throws Exception{
username = "";
passwd = "";
} public String getUsername() {
return username;
}
public void setUsername(String newusername) {
username = newusername;
} public String getPasswd() {
return passwd;
}
public void setPasswd(String newpasswd) {
passwd = newpasswd;
}
public long getUserid() {
return userid;
}
public String getAuthority() {
return authority;
}
public void setUserid (long uid) {
userid = uid;
} public String getSql() {
sqlStr = "select * from admin where adminuser = '" + strFormat.toSql(username) + "' and adminpass = '" + strFormat.toSql(passwd) + "'";
return sqlStr;
}
public boolean excute() throws Exception {
boolean flag = false;
ResultSet rs = sqlbean.executeQuery(getSql());
if (rs.next()){
userid = rs.getLong("id");
authority=rs.getString("authority");
flag = true;
}
rs.close();
sqlbean.closeConn();
return flag;
}
public void setinfo(String lastip,String username) throws Exception {
sqlbean.executeUpdate("UPDATE admin SET lasttime = getdate(),lastip='"+lastip+"' where adminuser='"+username+"' ");
sqlbean.closeConn();
}
}
/*
* Created on 2004-9-20
*
* To change the template for this generated file go to
* Window>Preferences>Java>Code Generation>Code and Comments
*/
package util;
import news.sql_data;
import news.strFormat;
import java.sql.*;/**
* Title: 用户登录信息检查
* Description:
* Copyright: Copyright (c) 2004
* @author: ning
* @version 1.0
*/public class login {
private String username; //登录用户名
private String passwd; //登录密码
private long userid=0; //用户ID号
private String authority; //用户权限
String sqlStr; //检索数据库SQL语句
sql_data sqlbean=new sql_data();
public static void main (String [] args) {}
public login() throws Exception{
username = "";
passwd = "";
} public String getUsername() {
return username;
}
public void setUsername(String newusername) {
username = newusername;
} public String getPasswd() {
return passwd;
}
public void setPasswd(String newpasswd) {
passwd = newpasswd;
}
public long getUserid() {
return userid;
}
public String getAuthority() {
return authority;
}
public void setUserid (long uid) {
userid = uid;
} public String getSql() {
sqlStr = "select * from admin where adminuser = '" + strFormat.toSql(username) + "' and adminpass = '" + strFormat.toSql(passwd) + "'";
return sqlStr;
}
public boolean excute() throws Exception {
boolean flag = false;
ResultSet rs = sqlbean.executeQuery(getSql());
if (rs.next()){
userid = rs.getLong("id");
authority=rs.getString("authority");
flag = true;
}
rs.close();
sqlbean.closeConn();
return flag;
}
public void setinfo(String lastip,String username) throws Exception {
sqlbean.executeUpdate("UPDATE admin SET lasttime = getdate(),lastip='"+lastip+"' where adminuser='"+username+"' ");
sqlbean.closeConn();
}
}
<%@ page errorPage="error.jsp" %>
<%@ page contentType="text/html; charset=gb2312" %>
<%@ page language="java" import="java.sql.*"%>
<jsp:useBean id="sqlbean" scope="page" class="news.sql_data"/>
<jsp:useBean id="login" scope="page" class="util.login"/>
<%String mesg = "";
if( request.getParameter("username")!=null && !request.getParameter("username").equals("")){
String username =request.getParameter("username");
String passwd = request.getParameter("passwd");
login.setUsername(username);
login.setPasswd(passwd);
boolean flag=login.excute();
if (flag!=false){
session.setAttribute("admin",username);
session.setAttribute("authority",login.getAuthority());
String lastip=request.getRemoteAddr();
login.setinfo(lastip,username);
response.sendRedirect("index.jsp");
}else {
mesg = "登录出错！" ;
}
}
%><%if (request.getParameter("action")!=null) {
session.removeAttribute("admin");
session.removeAttribute("authority");
response.sendRedirect("login.jsp");
}%><html>
<head>
<title>企业内部管理信息平台</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<script language="javascript">
function checkform() {
if (document.form1.username.value=="" || document.form1.passwd.value==""){
alert("用户名或密码为空！");
return false;
}
return true; }
</script>
</head><body text="#000000">
<div align="center">
<table width="100%" border="0" height="100%" cellspacing="0" cellpadding="0">
<tr>
<td align="center">
<form name="form1" method="post" action="login.jsp">
<table width="360" border="1" cellspacing="2" cellpadding="2" bgcolor="#66CCFF" bordercolor="#66CCFF" style="font-size:9pt">
<tr align="center">
<td colspan="2">
<h3><br>
<font color="#FF0000">系统登录</font></h3>
<p>
<select name=select1>
<option value="manager" select>管理员
<option value="employee">普通员工
</select>
</p></td>
</tr>
<tr>
<td align="right" width="150">帐号：</td>
<td>
<input type="text" name="username" size="12" maxlength="20">
</td>
</tr>
<tr>
<td align="right" width="150">密码：</td>
<td>
<input type="password" name="passwd" size="12" maxlength="20">
</td>
</tr>
<tr align="center">
<td colspan="2">
<input type="submit" name="Submit" value="登录" onclick="javascript:return(checkform());">
<input type="reset" name="Submit2" value="取消">
</td>
</tr>
</table>
</form>
<p> </p>
CopyRight@2004 <br>
</td>
</tr>
</table>
</div>
</body>
</html>