?? modifyservlet.java
字號(hào):
package com.wxpn.tutorial.servlet;
import java.io.IOException;
import java.util.Collection;
import java.util.Date;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
* Servlet implementation class for Servlet: ReadServlet
*/
public class ModifyServlet extends javax.servlet.http.HttpServlet implements
javax.servlet.Servlet {
/*
* (non-Java-doc)
*
* @see javax.servlet.http.HttpServlet#HttpServlet()
*/
public ModifyServlet() {
super();
}
/*
* (non-Java-doc)
*
* @see javax.servlet.http.HttpServlet#doGet(HttpServletRequest request,
* HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
String id = request.getParameter("id");
if (id == null) {
request.setAttribute("error", "<h1>閱讀留言失敗!</h1>");
} else {
BBSMsgMgr mgr = new BBSMsgMgr();
BBSMsg msg = mgr.getMessage(Integer.parseInt(id));
request.setAttribute("msg", msg);
}
try {
request.getRequestDispatcher("/modify.jsp").forward(request,
response);
} catch (Throwable t) {
getServletContext().log(t.getMessage());
}
}
/*
* (non-Java-doc)
*
* @see javax.servlet.http.HttpServlet#doPost(HttpServletRequest request,
* HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
String id = request.getParameter("id");
String title = request.getParameter("MB_TITLE");
String content = request.getParameter("MB_CONTENT");
title =Encoder.returnToBr(title);
content =Encoder.returnToBr(content);
String face=request.getParameter("face");
BBSMsg msg = new BBSMsg();
msg.setItem_id(Integer.parseInt(id));
msg.setItem_title(title);
msg.setItem_content(content);
msg.setModify_date(new Date());
msg.setFace(Integer.parseInt(face));
BBSMsgMgr mgr = new BBSMsgMgr();
int i = mgr.modify(msg);
if (i == 1) {
// 撰寫(xiě)成功
Collection c = mgr.getAllMessages(10, 1);
request.setAttribute("c", c);
try {
request.getRequestDispatcher("/index.jsp").forward(request,
response);
} catch (Throwable t) {
getServletContext().log(t.getMessage());
}
} else {
// 否則,表明撰寫(xiě)留言失敗:
request.setAttribute("error", "<h1>修改留言失敗!</h1>");
try {
request.getRequestDispatcher("/error.jsp").forward(request,
response);
} catch (Throwable t) {
getServletContext().log(t.getMessage());
}
}
}
}
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