weixin_42445895 04月13日
Servlet为啥输入文字输出都是问号啊
package com.action;

/**
* 网站公告
* @author Administrator
*
*/

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 com.bean.AfficheBean;
import com.bean.SystemBean;
import com.util.Constant;
import com.util.Filter;

public class AfficheServlet extends HttpServlet {

/**
* Constructor of the object.
*/
public AfficheServlet() {
super();
}

/**
* Destruction of the servlet. <br>
*/
public void destroy() {
super.destroy(); // Just puts "destroy" string in log
// Put your code here
}

/**
* 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 {

doPost(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 {

response.setContentType(Constant.CONTENTTYPE);
PrintWriter out = response.getWriter();
request.setCharacterEncoding(Constant.CHARACTERENCODING);
String sysdir = new SystemBean().getDir();
HttpSession session = request.getSession();
try{
String username2 = (String)session.getAttribute("user");
if(username2 == null){
request.getRequestDispatcher("error.jsp").forward(request, response);
}
else{
AfficheBean afficheBean = new AfficheBean();
String method = request.getParameter("method").trim();
if(method.equals("addAffiche")){//增加公告
String title = Filter.escapeHTMLTags(request.getParameter("title").trim());
String content = Filter.escapeHTMLTags(request.getParameter("content").trim());
String adder = username2;
String ifhide = Filter.escapeHTMLTags(request.getParameter("ifhide").trim());
int flag = afficheBean.addAffiche(title, content, adder, ifhide);
if(flag == Constant.SUCCESS){
request.setAttribute("message", "操作成功!");
request.getRequestDispatcher(sysdir+"/affiche/index.jsp").forward(request, response);
}
else{
request.setAttribute("message", "系统维护中请稍后再试!");
request.getRequestDispatcher(sysdir+"/affiche/index.jsp").forward(request, response);
}
}
else if(method.equals("editAffiche")){//修改公告
String id=Filter.escapeHTMLTags(request.getParameter("id").trim());
String title = Filter.escapeHTMLTags(request.getParameter("title").trim());
String content = Filter.escapeHTMLTags(request.getParameter("content").trim());
String adder = username2;
String ifhide = Filter.escapeHTMLTags(request.getParameter("ifhide").trim());
int flag = afficheBean.updateAffiche(Integer.parseInt(id), title, content, adder, ifhide);
if(flag == Constant.SUCCESS){
request.setAttribute("message", "操作成功!");
request.getRequestDispatcher(sysdir+"/affiche/index.jsp").forward(request, response);
}
else{
request.setAttribute("message", "系统维护中请稍后再试!");
request.getRequestDispatcher(sysdir+"/affiche/index.jsp").forward(request, response);
}
}
else if(method.equals("hideAffiche")){
String id = Filter.escapeHTMLTags(request.getParameter("id").trim());
int flag = afficheBean.hideAffiche(Integer.parseInt(id));
if(flag == Constant.SUCCESS){
request.getRequestDispatcher(sysdir+"/affiche/index.jsp").forward(request, response);
}
else{
request.setAttribute("message", "系统维护中,请稍后再试!");
request.getRequestDispatcher(sysdir+"/affiche/index.jsp").forward(request, response);
}
}
else if(method.equals("delaffiche")){//删除公告
String check[] = request.getParameterValues("checkit");
if(check == null){
request.setAttribute("message", "请选择要删除的记录!");
request.getRequestDispatcher(sysdir+"/affiche/index.jsp").forward(request, response);
}
else{
int id[]= new int[check.length];
for(int i = 0;i<check.length;i++){
int s = Integer.parseInt(check[i]);
id[i] = s;
}
int flag = afficheBean.delAffiche(id);
if(flag == Constant.SUCCESS){
request.getRequestDispatcher(sysdir+"/affiche/index.jsp").forward(request, response);
}
else{
request.setAttribute("message", "系统维护中,请稍后再试!");
request.getRequestDispatcher(sysdir+"/affiche/index.jsp").forward(request, response);
}
}
}
}
}catch(Exception e){
e.printStackTrace();
request.getRequestDispatcher("error.jsp").forward(request, response);
}
}

/**
* Initialization of the servlet. <br>
*
* @throws ServletException if an error occure
*/
public void init() throws ServletException {
// Put your code here
}

}
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