下面是JSP页面<%@ page language="java" import="java.util.*" pageEncoding="GBK"%>
<%
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>edit pet page</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>
<body>
<form name="pet" action="DoEditPet" >
pet_name:<input name="name"type="text" value="${sessionScope.petinfo.pet_name}"/><br/>
pet_owner_email:<input name="email" type="text" value="${sessionScope.petinfo.pet_owner_email}"/><br/>
<input type="reset" value="重置"/> <input type="submit" value="提交"/>
</form>
</body>
</html>以下是 servlet java 代码package Contrallor;import java.io.IOException;
import java.io.PrintWriter;import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;import dao.impl.PetinfoEditBizJdbcImpl;import entity.Petinfo;public class DoEditPet extends HttpServlet { /**
* The doGet method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to get.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
*/
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException { HttpSession session = request.getSession();
Petinfo petinfo = (Petinfo)session.getAttribute("petinfo"); petinfo.setPet_name(request.getParameter("name"));
petinfo.setPet_owner_email(request.getParameter("email"));
System.out.println(petinfo.getPet_name());
String result = new PetinfoEditBizJdbcImpl().edit(petinfo); if(result.equals("success"))
response.sendRedirect("/pet/showpet.jsp?id="+petinfo.getPet_id());
else
{
request.setAttribute("errormessage", "编辑错误");
request.getRequestDispatcher("/error.jsp").forward(request, response);
}
} /**
* The doPost method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to post.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
*/
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException { doGet(request,response);
}}在更新成功后跳转到另外一个显示页面 <%@ page language="java" import="java.util.*" pageEncoding="GBK"%>
<%
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>show pet page</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">
-->
<jsp:useBean id="petinfo" class="entity.Petinfo" scope="session"></jsp:useBean>
</head>
<body>
<div align="center">
${petinfo.pet_id }<br />
${petinfo.pet_name }<br />
<img alt="${petinfo.pet_name} " src="${petinfo.pet_pic}">
</div>
</body>
</html>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>edit pet page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
--> </head>
<body>
<form name="pet" action="DoEditPet" >
pet_name:<input name="name"type="text" value="${sessionScope.petinfo.pet_name}"/><br/>
pet_owner_email:<input name="email" type="text" value="${sessionScope.petinfo.pet_owner_email}"/><br/>
<input type="reset" value="重置"/> <input type="submit" value="提交"/>
</form>
</body>
</html>以下是 servlet java 代码package Contrallor;import java.io.IOException;
import java.io.PrintWriter;import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;import dao.impl.PetinfoEditBizJdbcImpl;import entity.Petinfo;public class DoEditPet extends HttpServlet { /**
* The doGet method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to get.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
*/
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException { HttpSession session = request.getSession();
Petinfo petinfo = (Petinfo)session.getAttribute("petinfo"); petinfo.setPet_name(request.getParameter("name"));
petinfo.setPet_owner_email(request.getParameter("email"));
System.out.println(petinfo.getPet_name());
String result = new PetinfoEditBizJdbcImpl().edit(petinfo); if(result.equals("success"))
response.sendRedirect("/pet/showpet.jsp?id="+petinfo.getPet_id());
else
{
request.setAttribute("errormessage", "编辑错误");
request.getRequestDispatcher("/error.jsp").forward(request, response);
}
} /**
* The doPost method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to post.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
*/
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException { doGet(request,response);
}}在更新成功后跳转到另外一个显示页面 <%@ page language="java" import="java.util.*" pageEncoding="GBK"%>
<%
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>show pet page</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">
-->
<jsp:useBean id="petinfo" class="entity.Petinfo" scope="session"></jsp:useBean>
</head>
<body>
<div align="center">
${petinfo.pet_id }<br />
${petinfo.pet_name }<br />
<img alt="${petinfo.pet_name} " src="${petinfo.pet_pic}">
</div>
</body>
</html>
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