📄 user_delete.jsp
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<%@ page language="java" import="java.sql.*" contentType="text/html;charset=gb2312"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>用户删除界面</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<jsp:useBean id="test1" scope="application" class="test.Connect_db"/>
<body>
<%
int i=0;
int PageSize=10;
int ShowPage=1;
int RowCount=0;
int PageCount=0;
String checkbox_name[]={"1","2","3","4","5","6","7","8","9","10","11"};
Connection con=test1.getConnection();
String user_class=request.getParameter("user_class1");
if(user_class==null){ %>
<jsp:forward page="select_user_class.jsp">
<jsp:param name="operater" value="delete"/>
</jsp:forward>
<%}%>
<% String sql1="select s_id,psw from student";
String sql2="select t_id,psw from teacher";
String sql3="select id,psw from administrator";
String sql;
%>
<form action="administrator/user_delete_db.jsp" method="post">
<% String ToPage=request.getParameter("ToPage");
if(user_class.equals("student")){sql=sql1;}
else if(user_class.equals("teacher")){sql=sql2;}
else {sql=sql3;}
Statement stmt=con.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE,ResultSet.CONCUR_READ_ONLY);
ResultSet rs=stmt.executeQuery(sql);
rs.last();
RowCount=rs.getRow();
PageCount=((RowCount%PageSize)==0?(RowCount/PageSize):(RowCount/PageSize)+1);
if(ToPage!=null){
ShowPage=Integer.parseInt(ToPage);
if(ShowPage>PageCount){
ShowPage=PageCount;
}
else if(ShowPage<=0){
ShowPage=1;
} }
rs.absolute((ShowPage-1)*PageSize+1);
%>
<H3>目前在第<FONT size=4 color=red><%=ShowPage%></FONT>页，共有
<FONT size=4 color=red><%=PageCount%></FONT>页
</H3>
<P></P>
<TABLE border="1">
<TR>
<TH></TH>
<TH>用户名</TH>
<TH>密码</TH>
</TR>
<%
do{
%>
<TR>
<TD><%=rs.getString(1)%></TD>
<TD><%=rs.getString(2)%></TD>
</TR>
<% i++; }
while(rs.next()&&i<PageSize);%>
</TABLE>
<br>
<INPUT type="submit" value="提交">
<INPUT type="reset" value="重置">
<% %>
</FORM>
<TABLE>
<TR valign=baseline align=center>
<% if(ShowPage!=1){ %>
<TD width=150><A href=user_delete.jsp?ToPage=<%=1%>>第一页</A> </TD>
<TD width=150><A href=user_delete.jsp?ToPage=<%=ShowPage-1%>>上一页</A> </TD>
<% } if(ShowPage!=PageCount){%>
<TD width=150><A href=user_delete.jsp?ToPage=<%=ShowPage+1%>>下一页</A> </TD>
<TD width=150><A href=user_delete.jsp?ToPage=<%=PageCount%>>最后一页</A> </TD>
<%}%>
<TD width=150>
<form action=user_delete.jsp method=post>
到
<INPUT type="text" name=ToPage style="height:25px;width:40px" value=<%=ShowPage%> >页
</form>
</TD>
</TR>
</TABLE>
</body>
</html>
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