内容发布更新时间 : 2024/11/15 5:46:42星期一 下面是文章的全部内容请认真阅读。

}

}

String name = request.getParameter(\String word = request.getParameter(\

word = word.replace(\日你\word = word.replace(\狗日的\word = word.replace(\你妹\word = word.replace(\操你\word = word.replace(\你妈的\

req.setAttribute(\chain.doFilter(request, response);

@Override

public void init(FilterConfig FilterConfig) throws ServletException { // TODO Auto-generated method stub this.config = FilterConfig; }

Encoding.java

package com;

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;

import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse;

public class Encoding implements Filter { protected String encoding = null; protected FilterConfig config; @Override public void destroy() { // TODO Auto-generated method stub

}

}

@Override

public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException { HttpServletRequest req = (HttpServletRequest)request; HttpServletResponse resp = (HttpServletResponse)response; request.setCharacterEncoding(\ response.setCharacterEncoding(\ chain.doFilter(request, response); }

@Override

public void init(FilterConfig FilterConfig) throws ServletException { this.config = FilterConfig; this.encoding = FilterConfig.getInitParameter(\}

protected String getEncoding(){ return encoding; }

CheckForm.jsp

<%@ page language=\ contentType=\ pageEncoding=\%>

CheckFormOver.jsp

<%@ page language=\ contentType=\ pageEncoding=\%>

web.xml

xmlns:web=\ xsi:schemaLocation=\

http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd\ id=\ version=\>

ch2

EncodingFilter com.EncodingFilter

EncodingFilter /CheckFormOver.jsp CheckFormFilter com.CheckFormFilter

index.html index.htm index.jsp default.html default.htm default.jsp

3. LogoutServlet.java OnlineUserServlet.java User.java UserList.java Login.html web.xml

LogoutServlet.java

CheckFormFilter /CheckFormOver.jsp

package com;

import java.io.IOException; import java.io.PrintWriter;

import javax.servlet.ServletException;

import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import javax.servlet.http.HttpSession;

import org.apache.catalina.connector.Response;

public class LogoutServlet extends javax.servlet.http.HttpServlet implements javax.servlet.Servlet{

public LogoutServlet() { super(); }

public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException{

response.setContentType(\ HttpSession session = request.getSession(); User user = (User)session.getAttribute(\ session.invalidate(); PrintWriter out = response.getWriter(); out.println(\退出登录\ out.println(user.getName()+\你已退出登录
\ out.println(\重新登录\ out.println(\ out.close(); } }

OnlineUserServlet.java

package com;

import java.io.*;

import java.util.Enumeration; import javax.servlet.*;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;