ajax聊天室(JSP版)5

来源：互联网发布：网络群体事件政府编辑：程序博客网时间：2024/05/18 03:18

用来的Java类，除了上述几个外，就剩下以下几个了。

两个过滤器类，一个用来过滤字符，一个用来过滤未登录的用户。

package org.jvk.chatroom.filter;

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;

import javax.servlet.http.HttpSession;

import org.jvk.chatroom.servlet.BaseServlet;

public class ChatroomFilter implements Filter {

private static final String LOGIN_PAGE = "/chatroom";

private static final String USER = BaseServlet.USER;

public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)

throws IOException, ServletException {

HttpServletRequest req = (HttpServletRequest) request;

HttpSession session = req.getSession(false);

if (session == null || session.getAttribute(USER) == null) {

((HttpServletResponse) response).sendRedirect(LOGIN_PAGE);

return;

}

chain.doFilter(request, response);

}

public void init(FilterConfig filterConfig) throws ServletException {

}

public void destroy() {

}

package org.jvk.chatroom.filter;

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;

public class CharacterEncoding implements Filter {

protected String encoding = null;

protected FilterConfig filterConfig = null;

protected booleanignore = true;

public void destroy() {

this.encoding = null;

this.filterConfig = null;

}

public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException,

ServletException {

if (ignore || (request.getCharacterEncoding() == null)) {

String encoding = selectEncoding(request);

if (encoding != null)

request.setCharacterEncoding(encoding);

}

chain.doFilter(request, response);

}

public void init(FilterConfig filterConfig) throws ServletException {

this.filterConfig = filterConfig;

this.encoding = filterConfig.getInitParameter("encoding");

String value = filterConfig.getInitParameter("ignore");

if (value == null)

this.ignore = true;

elseif (value.equalsIgnoreCase("true") || value.equalsIgnoreCase("yes"))

this.ignore = true;

else

this.ignore = false;

}

protected String selectEncoding(ServletRequest request) {

return (this.encoding);

}

一个Listener，用于初始化聊天室（调用ChatroomManager的config方法）。

package org.jvk.chatroom.listener;

import java.io.File;

import java.io.IOException;

import javax.servlet.ServletContextEvent;

import javax.servlet.ServletContextListener;

import org.apache.commons.logging.Log;

import org.apache.commons.logging.LogFactory;

import org.jvk.chatroom.service.ChatroomManager;

public class InitChatroom implements ServletContextListener {

private static Log log = LogFactory.getLog(InitChatroom.class);

public void contextInitialized(ServletContextEvent event) {

String configFile = event.getServletContext().getInitParameter("configFile");

try {

ChatroomManager.newInstance().config(new File(event.getServletContext().getRealPath(configFile)));

} catch (IOException e) {

log.error(e);

throw new RuntimeException(e.getMessage());

}

public void contextDestroyed(ServletContextEvent event) {

}

至此，所有的Java类代码都没有了。下面开始写客户端的JS代码和界面的HTML代码。

顺便将配置文件也贴出来。

<?xml version="1.0" encoding="GBK"?>

<projectname="ajax聊天室"default="default"basedir="E:/jsp/chatroom">

<propertyenvironment="env"/>

<!--

-->

<propertyname="tomcat.home"value="G:/GreenSoftware/tomcat-6.0.10"/>

<propertyname="source.root"value="${basedir}/src"/>

<propertyname="class.root"value="${source.root}/web/WEB-INF/classes"/>

<propertyname="web.lib"value="${source.root}/web/WEB-INF/lib"/>

<propertyname="tomcat.lib"value="${tomcat.home}/lib"/>

<propertyname="dist"value="${basedir}/dist"/>

<propertyname="appName"value="chatroom"/>

<pathid="classpath">

<pathelementlocation="${class.root}"/>

<filesetdir="${tomcat.lib}">

<includename="servlet-api.jar"/>

<includename="jsp-api.jar"/>

</fileset>

<filesetdir="${web.lib}">

<includename="*.jar"/>

</fileset>

</path>

<targetname="clean">

<deletedir="${class.root}"/>

<deletedir="${dist}"/>

</target>

<targetname="prepare">

<mkdirdir="${dist}"/>

<copytodir="${class.root}">

<filesetdir="${source.root}/java">

<excludename="**/*.java"/>

</fileset>

</copy>

</target>

<targetname="compile"depends="prepare">

<javacclasspathref="classpath"srcdir="${source.root}/java"destdir="${class.root}"/>

</target>

<targetname="c"depends="compile"/>

<targetname="war"depends="compile">

<jarjarfile="${dist}/${appName}.war"basedir="${source.root}/web"/>

</target>

<targetname="zip"depends="war">

<zipzipfile="${dist}/${appName}_bin_src.zip">

<filesetdir="${dist}">

<includename="${appName}.war"/>

</fileset>

<filesetdir="${basedir}">

<includename="src/**"/>

<includename="build.xml"/>

</fileset>

</zip>

</target>

<targetname="doc">

<javadocpackagenames="*"sourcepath="${source.root}/java"defaultexcludes="yes"destdir="${dist}/doc"author="true"version="true"use="true"windowtitle="${ant.project.name}"/>

</target>

<targetname="run.tomcat">

<execdir="${tomcat.home}/bin"executable="cmd.exe">

<argline="/c startup.bat"/>

</exec>

</target>

<targetname="close.tomcat">

<execdir="${tomcat.home}/bin"executable="cmd.exe">

<argline="/c shutdown.bat"/>

</exec>

</target>

<targetname="deploy"depends="war">

<deletedir="${tomcat.home}/webapps/${appName}"/>

<copyfile="${dist}/${appName}.war"overwrite="ture"todir="${tomcat.home}/webapps"/>

</target>

<targetname="default">

<echomessage="java version = ${ant.java.version}"/>

<echomessage="ant version = ${ant.version}"/>

<echomessage="---------请输入参数--------"/>

<echomessage="输入 [ant help] 获取助信息"/>

</target>

<targetname="help">

<echomessage="1. ant compile(或 ant c) (编译所有Java源文件)"/>

<echomessage="2. ant native (编译所有Java源文件)"/>

<echomessage="3. ant clean (清除classes目录下的所有类文件)"/>

<echomessage="4. ant run.tomcat (启动Tomcat服务器)"/>

<echomessage="5. ant close.tomcat (关闭Tomcat服务器)"/>

<echomessage="6. ant doc (生成API文档 )"/>

</target>

</project>

#log4j.rootLogger = INFO, A1

log4j.rootLogger=DEBUG,A1

log4j.appender.A1 = org.apache.log4j.ConsoleAppender

log4j.appender.A1.layout = org.apache.log4j.PatternLayout

log4j.appender.A1.layout.ConversionPattern = %d{yyyy-MM-ddhh:mm:ss}:%p%t%c-%m%n

web.xml配置文件

<?xml version="1.0" encoding="GBK"?>

<web-app xmlns="http://java.sun.com/xml/ns/j2ee"

xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee

http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"

version="2.4">

<description>ajax聊天室</description>

<context-param>

<param-name>configFile</param-name>

<param-value>WEB-INF/chatroom-config.xml</param-value>

</context-param>

<listener-class>

org.jvk.chatroom.listener.InitChatroom

</listener-class>

</listener>

<filter-name>CharacterEncoding</filter-name>

<filter-class>

org.jvk.chatroom.filter.CharacterEncoding

</filter-class>

<init-param>

<param-name>encoding</param-name>

<param-value>UTF-8</param-value>

</init-param>

</filter>

<filter-mapping>

<filter-name>CharacterEncoding</filter-name>

<url-pattern>/*</url-pattern>

</filter-mapping>

<filter-name>chatroomFilter</filter-name>

<filter-class>

org.jvk.chatroom.filter.ChatroomFilter

</filter-class>

<init-param>

<param-name>encoding</param-name>

<param-value>UTF-8</param-value>

</init-param>

</filter>

<filter-mapping>

<filter-name>chatroomFilter</filter-name>

<url-pattern>/pages/chatroom.jsp</url-pattern>

</filter-mapping>

<description>login</description>

<display-name>login</display-name>

<servlet-name>login</servlet-name>

<servlet-class>org.jvk.chatroom.servlet.Login</servlet-class>

</servlet>

<servlet-mapping>

<servlet-name>login</servlet-name>

<url-pattern>/login</url-pattern>

</servlet-mapping>

<display-name>getMessage</display-name>

<servlet-name>getMessage</servlet-name>

<servlet-class>

org.jvk.chatroom.servlet.GetMessage

</servlet-class>

</servlet>

<servlet-mapping>

<servlet-name>getMessage</servlet-name>

<url-pattern>/getMessage</url-pattern>

</servlet-mapping>

<servlet-name>getUserList</servlet-name>

<servlet-class>

org.jvk.chatroom.servlet.GetUserList

</servlet-class>

</servlet>

<servlet-mapping>

<servlet-name>getUserList</servlet-name>

<url-pattern>/getUserList</url-pattern>

</servlet-mapping>

<servlet-name>sendMessage</servlet-name>

<servlet-class>

org.jvk.chatroom.servlet.SendMessage

</servlet-class>

</servlet>

<servlet-mapping>

<servlet-name>sendMessage</servlet-name>

<url-pattern>/sendMessage</url-pattern>

</servlet-mapping>

<jsp-config>

<jsp-property-group>

<url-pattern>*.jsp</url-pattern>

<page-encoding>UTF-8</page-encoding>

<include-prelude>/pages/inc/taglib.inc</include-prelude>

</jsp-property-group>

</jsp-config>

</web-app>