在开始学习GUI的SOCKET编程时，就一直有一个梦想，希望有一天能将这种聊天程序在WEB上实现，虽然QQ和许多其它的聊天程序已经实现，但是他们的实现都使用的是AJAX，无非是对AJAX进行改进，或者使用FLEX，个人认为那样实现太复杂，没有研究！！几个星期前终天有时间研究了，使用jetty来编写聊天程序，后来聊天都实现了，但是jetty服务器没有使用过，中间配服务器差不多用了一个星期，让我很纠结，最后在实验室的电脑可以成功运行！！！不过可悲的是当我移植到我的笔记本时，却出现在了各种怪错！！于是，我又纠结了，今天晚上，奇迹的发现tomcat竟然也支持了，所以果然的下载了tomcat7.0.27来测试，惊人的发现与jetty实现相似，所以写了一个小测试程序，测试成功！！下面贴上我的代码，有兴趣的童鞋可以一起学习哦！！！！
index.jsp
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
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>My JSP 'index.jsp' starting 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">
<script type="text/javascript">
var ws = null;
function startServer() {
var url = "ws:localhost:8080/SocketTest/action/SocketServlet.do";
if ('WebSocket' in window) {
ws = new WebSocket(url);
} else if ('MozWebSocket' in window) {
ws = new MozWebSocket(url);
} else {
alert('WebSocket is not supported by this browser.');
return;
}
ws.onopen = function() {
alert("connect success!");
};
ws.onmessage = function(event) {
alert("revice mess:" + event.data);
};
ws.onclose = function() {
alert("close connect..");
};
}
</script>
</head>
<body onload="startServer()">
</body>
</html>
src
package action;
import org.apache.catalina.websocket.StreamInbound;
import socket.MyWebSocket;
public class WebSocketServlet extends
org.apache.catalina.websocket.WebSocketServlet {
@Override
protected StreamInbound createWebSocketInbound(String subProtocol) {
// TODO Auto-generated method stub
return new MyWebSocket();
}
}
package socket;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.CharBuffer;
import org.apache.catalina.websocket.MessageInbound;
import org.apache.catalina.websocket.WsOutbound;
public class MyWebSocket extends MessageInbound {
@Override
protected void onOpen(WsOutbound outbound) {
System.out.println("connect....");
CharBuffer buffer = CharBuffer.wrap("hello,welcome to connect!");
try {
this.getWsOutbound().writeTextMessage(buffer);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
@Override
protected void onClose(int status) {
System.out.println("close.....");
}
@Override
protected void onBinaryMessage(ByteBuffer arg0) throws IOException {
// TODO Auto-generated method stub
}
@Override
protected void onTextMessage(CharBuffer arg0) throws IOException {
// TODO Auto-generated method stub
}
}
需要说明的是，在开发的时候必须在tomcat的lib目录下拷贝两个JAR包：catalina.jar tomcat-coyote.jar
但当你运行的时候必须将这两个包删除，否则，会与tomcat的包冲突！！！！！
他们类的关系，也有一定的理解，今天暂时写到这里吧！！
index.jsp
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
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>My JSP 'index.jsp' starting 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">
<script type="text/javascript">
var ws = null;
function startServer() {
var url = "ws:localhost:8080/SocketTest/action/SocketServlet.do";
if ('WebSocket' in window) {
ws = new WebSocket(url);
} else if ('MozWebSocket' in window) {
ws = new MozWebSocket(url);
} else {
alert('WebSocket is not supported by this browser.');
return;
}
ws.onopen = function() {
alert("connect success!");
};
ws.onmessage = function(event) {
alert("revice mess:" + event.data);
};
ws.onclose = function() {
alert("close connect..");
};
}
</script>
</head>
<body onload="startServer()">
</body>
</html>
src
package action;
import org.apache.catalina.websocket.StreamInbound;
import socket.MyWebSocket;
public class WebSocketServlet extends
org.apache.catalina.websocket.WebSocketServlet {
@Override
protected StreamInbound createWebSocketInbound(String subProtocol) {
// TODO Auto-generated method stub
return new MyWebSocket();
}
}
package socket;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.CharBuffer;
import org.apache.catalina.websocket.MessageInbound;
import org.apache.catalina.websocket.WsOutbound;
public class MyWebSocket extends MessageInbound {
@Override
protected void onOpen(WsOutbound outbound) {
System.out.println("connect....");
CharBuffer buffer = CharBuffer.wrap("hello,welcome to connect!");
try {
this.getWsOutbound().writeTextMessage(buffer);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
@Override
protected void onClose(int status) {
System.out.println("close.....");
}
@Override
protected void onBinaryMessage(ByteBuffer arg0) throws IOException {
// TODO Auto-generated method stub
}
@Override
protected void onTextMessage(CharBuffer arg0) throws IOException {
// TODO Auto-generated method stub
}
}
需要说明的是，在开发的时候必须在tomcat的lib目录下拷贝两个JAR包：catalina.jar tomcat-coyote.jar
但当你运行的时候必须将这两个包删除，否则，会与tomcat的包冲突！！！！！
他们类的关系，也有一定的理解，今天暂时写到这里吧！！
