1、录入页
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body bgcolor="#00CC33">
<div style=heigh:800px;weight:300px;position:absolute;left:200px;top:100px;background-color:#OF3>
<form action="shangpin" method="post">
<table heigh="800" weight="300" cellpadding="0" cellspacing="0">
<tr align="center" height="50"><td colspan="2"><font size="6">     请输入商品信息</font></td></tr>
<tr ><td weight="40" align="right">商品编号：</td><td><input type="text" name="spbh" ></td></tr>
<tr><td weight="40" align="right">商品名称：</td><td ><input type="text" name="spm"></td></tr>
<tr><td weight="40" align="right">生产日期：</td><td><input type="text" name="scrq"></td></tr>
<tr><td weight="40" align="right">保质期：</td><td><input type="text" name="bzq"></td></tr>
<tr><td weight="40" align="right">生产厂家：</td><td><input type="text" name="cs"></td></tr>
<tr align="center"><td colspan="2">     <input type="submit" value="提交数据"></td></tr>
</table>
</form>
</div>
</body>
</html>
</body>
</html>
2、更改页
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ page import="java.sql.*" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<%try{
//1、连接数据库
Class.forName("oracle.jdbc.driver.OracleDriver");
//（2）得到链接
Connection conn=DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:ORCLER","test","asd123");
Statement st=conn.createStatement();
ResultSet rs=st.executeQuery("select * from shangpin");
//3、输出结果集
if(rs!=null)
{
while(rs.next())
{
out.print("商品编号："+rs.getString("spbn")+" ");
out.print("商品名称："+rs.getString("spm")+" ");
try{
out.print("生产日期："+rs.getString("scrq")+" ");
}catch(Exception e){}
out.print("保质期："+rs.getDate("bzq") +" ");
out.print(
"生产厂家："+rs.getString("cs")+"<a href=‘caozuosj?spbh="+rs.getString("spbh")+"‘>【删除】</a><a href=‘Update.jsp?spbh="+rs.getString("spbh")+"‘>【修改】</a><br> ");
}
rs.close();
}
}
catch(Exception e)
{
e.printStackTrace();
}
%>
</body>
</html>
3、过滤器
package lianxi77;
import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
/**
* Servlet Filter implementation class zhuanhuan
*/
public class zhuanhuan implements Filter {
/**
* Default constructor.
*/
public zhuanhuan() {
// TODO Auto-generated constructor stub
}
/**
* @see Filter#destroy()
*/
public void destroy() {
// TODO Auto-generated method stub
}
/**
* @see Filter#doFilter(ServletRequest, ServletResponse, FilterChain)
*/
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
request.setCharacterEncoding("UTF-8");
response.setContentType("text/html");
response.setCharacterEncoding("UTF-8");
chain.doFilter(request, response);
}
/**
* @see Filter#init(FilterConfig)
*/
public void init(FilterConfig fConfig) throws ServletException {
// TODO Auto-generated method stub
}
}
4、数据插入
package lianxi77;
import java.io.IOException;
import java.sql.Connection;
import java.sql.Date;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.text.SimpleDateFormat;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class shangpin extends HttpServlet {
private static final long serialVersionUID = 1L;
public shangpin() {
super();
}
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
//接收数据
String spbh=request.getParameter("spbh");
String spm=request.getParameter("spm");
String scrq=request.getParameter("scrq");
String bzq=request.getParameter("bzq");
String cs=request.getParameter("cs");
if(spbh!=null&&spbh.trim().length()!=0)
{
try{
Class.forName("oracle.jdbc.driver.OracleDriver");
Connection conn=DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:ORCLER","test","asd123");
System.out.println("lainjiechenggong");
PreparedStatement pst=conn.prepareStatement(
"insert into shangpin(spbh,spm,scrq,bzq,cs)"
+" values(?,?,?,?,?)");
SimpleDateFormat sd=new SimpleDateFormat("yyyy-MM-dd");
java.util.Date b=sd.parse(scrq);
Date da=new Date(b.getTime());
pst.setString(1, spbh);
pst.setString(2, spm);
pst.setDate(3, da);
pst.setString(4, bzq);
pst.setString(5, cs);
pst.executeUpdate();
pst.close();
conn.close();
response.getWriter().println("保存成功！");
response.setHeader("refresh","3;URL=caozuo.jsp");
}
catch(Exception e)
{
e.printStackTrace();
}
}
else
{
response.getWriter().println("请正确提交数据！");
response.setHeader("refresh","3;URL=shuruye.jsp");
}
}
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
}
}
5、数据更改
package lianxi77;
import java.io.IOException;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class caozuosj extends HttpServlet {
private static final long serialVersionUID = 1L;
public caozuosj() {
super();
}
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
String num=request.getParameter("spbm");
if(num!=null&&num.trim().length()!=0)
{
try{
Class.forName("oracle.jdbc.driver.OracleDriver");
Connection conn=DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:ORCLER","test","asd123");
PreparedStatement pst=conn.prepareStatement(
"delete shangpin where"+" spbm=?");
pst.setString(1, num);
pst.executeUpdate();
pst.close();
conn.close();
response.getWriter().println("删除成功！");
response.setHeader("refresh","3;URL=caozuo.jsp");
}
catch(Exception e)
{
e.printStackTrace();
response.getWriter().println("删除失败！");
response.setHeader("refresh","3;URL=caozuo.jsp");
}
}
else
{
response.getWriter().println("请正确提交数据！");
response.setHeader("refresh","3;URL=suruye.jsp");
}
}
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
doGet(request, response);
}
}
6、运行时显示服务器丢失
原文：http://www.cnblogs.com/jakeasd/p/5652153.html