人口普查系统，删除功能：
<%@ page language="java" contentType="text /html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8d">
<title>Insert title here</title>
</head>
<body>
<form action="Jdelete1.jsp" method="post" onsubmit="return chech(this)">
<td align="center" colspan="2">
<h2>信息删除系统</h2>
<hr>
</td>
<tr>
<td align="right">删除户主的姓名</td>
<td><input type="text" name="name"/></td>
</tr>
<tr>
<td align="center" colspan="2">
<input type="submit" value="提交">
</td>
</tr>
</form>
</body>
</html>
<%@ page language="java" contentType="text/ html; charset=UTF-8"
pageEncoding="UTF-8" import = "java.sql.*"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
<%request.setCharacterEncoding("UTF-8"); %>
<%
String name=request.getParameter("name");
session.setAttribute("name",name);
%>
<pre>
<%
String name1=request.getParameter("name");
out.print(name);
Class.forName("com.mysql.cj.jdbc.Driver");
String url = "jdbc:mysql://localhost:3306/test?serverTimezone=GMT%2B8";
String username = "root";
String password="123456";
Connection a = DriverManager.getConnection(url,username,password);
if(a != null){
out.println("数据库连接成功！");
}
Statement stmt=a.createStatement();
String sql="select* from renkou";
ResultSet rs=stmt.executeQuery(sql);
int TEMP=0;
while(rs.next())
{
String namep=rs.getString("户主姓名");
if(name1.equals(namep)==true)
{
TEMP=1;
out.print(rs.getString("户别"));
out.print(" ");
out.print(rs.getString("住房类型"));
out.print(" ");
out.print(rs.getString("本户现住房面积"));
out.print(" ");
out.print(rs.getString("本户现住房间数"));
out.print(" ");
out.print(rs.getString("户主姓名"));
out.print(" ");
out.print(rs.getString("性别"));
out.print(" ");
out.print(rs.getString("身份证号码"));
out.print(" ");
out.print(rs.getString("民族"));
out.print(" ");
out.println(rs.getString("受教育程度"));
}
}
if(TEMP==0)
{
out.println("户主不存在");
}
%>
<form action="Jdalete2.jsp" method="post" onsubmit="return chech(this)">
<tr>
<td align="center" colspan="2">
<input type="submit" value="确认删除">
</td>
</tr>
</form>
</pre>
</body>
</html>