~ D:\toolkit\tomcat7\bin>catalina.bat version
Using CATALINA_BASE: "D:\toolkit\tomcat7"
Using CATALINA_HOME: "D:\toolkit\tomcat7"
Using CATALINA_TMPDIR: "D:\toolkit\tomcat7\temp"
Using JRE_HOME: "D:\toolkit\java\jdk6"
Using CLASSPATH: "D:\toolkit\tomcat7\bin\bootstrap.jar;D:\toolkit\tomcat7\bin\tomcat-juli.jar"
Server version: Apache Tomcat/7.0.39
Server built: Mar 22 2013 12:37:24
Server number: 7.0.39.0
OS Name: Windows 7
OS Version: 6.1
Architecture: amd64
JVM Version: 1.6.0_45-b06
JVM Vendor: Sun Microsystems Inc.
2). maven构建一个简单的webapp项目。
~ D:\toolkit\tomcat7>bin\catalina.bat run
Using CATALINA_BASE: "D:\toolkit\tomcat7"
Using CATALINA_HOME: "D:\toolkit\tomcat7"
Using CATALINA_TMPDIR: "D:\toolkit\tomcat7\temp"
Using JRE_HOME: "D:\toolkit\java\jdk6"
Using CLASSPATH: "D:\toolkit\tomcat7\bin\bootstrap.jar;D:\toolkit\tomcat7\bin\tomcat-juli.jar"
2013-8-20 14:43:29 org.apache.catalina.core.AprLifecycleListener init
信息: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not fou
nd on the java.library.path: D:\toolkit\java\jdk6\bin;C:\Windows\Sun\Java\bin;C:\Windows\system32;C:\Windows;D:\toolkit\
Rtools\bin;D:\toolkit\Rtools\gcc-4.6.3\bin;C:\Program Files (x86)\Common Files\NetSarang;C:\Windows\system32;C:\Windows;
C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;D:\toolkit\Git\cmd;D:\toolkit\Git\bin;C:\Program Fi
les (x86)\Microsoft SQL Server\100\Tools\Binn\;C:\Program Files\Microsoft SQL Server\100\Tools\Binn\;C:\Program Files\Mi
crosoft SQL Server\100\DTS\Binn\;c:\Program Files (x86)\Common Files\Ulead Systems\MPEG;C:\Program Files (x86)\QuickTime
\QTSystem\;D:\toolkit\MiKTex\miktex\bin\x64\;D:\toolkit\sshclient;D:\toolkit\ant19\bin;D:\toolkit\eclipse;D:\toolkit\gra
dle15\bin;D:\toolkit\java\jdk6\bin;D:\toolkit\maven3\bin;D:\toolkit\mysql56\bin;D:\toolkit\python27;D:\toolkit\putty;C:\
Program Files\R\R-3.0.1\bin\x64;D:\toolkit\mongodb243\bin;D:\toolkit\php54;D:\toolkit\nginx140;D:\toolkit\nodejs;D:\tool
kit\npm12\bin;D:\toolkit\java\jdk6\jre\bin\server;.
2013-8-20 14:43:30 org.apache.coyote.AbstractProtocol init
信息: Initializing ProtocolHandler ["http-bio-8080"]
2013-8-20 14:43:30 org.apache.coyote.AbstractProtocol init
信息: Initializing ProtocolHandler ["ajp-bio-8009"]
2013-8-20 14:43:30 org.apache.catalina.startup.Catalina load
信息: Initialization processed in 1409 ms
2013-8-20 14:43:30 org.apache.catalina.core.StandardService startInternal
信息: Starting service Catalina
2013-8-20 14:43:30 org.apache.catalina.core.StandardEngine startInternal
信息: Starting Servlet Engine: Apache Tomcat/7.0.39
2013-8-20 14:43:30 org.apache.catalina.startup.HostConfig deployWAR
信息: Deploying web application archive D:\toolkit\tomcat7\webapps\websocketServer.war
2013-8-20 14:43:30 org.apache.catalina.startup.HostConfig deployDirectory
信息: Deploying web application directory D:\toolkit\tomcat7\webapps\docs
2013-8-20 14:43:30 org.apache.catalina.startup.HostConfig deployDirectory
信息: Deploying web application directory D:\toolkit\tomcat7\webapps\examples
2013-8-20 14:43:31 org.apache.catalina.startup.HostConfig deployDirectory
信息: Deploying web application directory D:\toolkit\tomcat7\webapps\host-manager
2013-8-20 14:43:31 org.apache.catalina.startup.HostConfig deployDirectory
信息: Deploying web application directory D:\toolkit\tomcat7\webapps\manager
2013-8-20 14:43:31 org.apache.catalina.startup.HostConfig deployDirectory
信息: Deploying web application directory D:\toolkit\tomcat7\webapps\ROOT
2013-8-20 14:43:31 org.apache.coyote.AbstractProtocol start
信息: Starting ProtocolHandler ["http-bio-8080"]
2013-8-20 14:43:31 org.apache.coyote.AbstractProtocol start
信息: Starting ProtocolHandler ["ajp-bio-8009"]
2013-8-20 14:43:31 org.apache.catalina.startup.Catalina start
信息: Server startup in 996 ms
websocket的服务地址:
ws://localhost:8080/websocketServer/wsServlet
2. 客户端实现(Java-WebSocket)
通过Java实现websocket的客户端,这里将介绍的是”Java-WebSocket”。另外,我发现Java7已经原生支持了websocket, “JSR 365, Java API for WebSocket” (看来要开始学学java7和java8了,我在java6的时代停滞3-4年了。)
现在我们使用“Java-WebSocket”
1). 修改pom.xml文件,增加jetty websocket依赖库
~ vi pom.xml
<dependency>
<groupId>org.java-websocket</groupId>
<artifactId>Java-WebSocket</artifactId>
<version>1.3.0</version>
</dependency>
下载依赖库
public class ChatClient extends JFrame implements ActionListener {
private static final long serialVersionUID = -6056260699202978657L;
private final JTextField uriField;
private final JButton connect;
private final JButton close;
private final JTextArea ta;
private final JTextField chatField;
private final JComboBox draft;
private WebSocketClient cc;
public ChatClient( String defaultlocation ) {
super( "WebSocket Chat Client" );
Container c = getContentPane();
GridLayout layout = new GridLayout();
layout.setColumns( 1 );
layout.setRows( 6 );
c.setLayout( layout );
Draft[] drafts = { new Draft_17(), new Draft_10(), new Draft_76(), new Draft_75() };
draft = new JComboBox( drafts );
c.add( draft );
uriField = new JTextField();
uriField.setText( defaultlocation );
c.add( uriField );
connect = new JButton( "Connect" );
connect.addActionListener( this );
c.add( connect );
close = new JButton( "Close" );
close.addActionListener( this );
close.setEnabled( false );
c.add( close );
JScrollPane scroll = new JScrollPane();
ta = new JTextArea();
scroll.setViewportView( ta );
c.add( scroll );
chatField = new JTextField();
chatField.setText( "" );
chatField.addActionListener( this );
c.add( chatField );
java.awt.Dimension d = new java.awt.Dimension( 300, 400 );
setPreferredSize( d );
setSize( d );
addWindowListener( new java.awt.event.WindowAdapter() {
@Override
public void windowClosing( WindowEvent e ) {
if( cc != null ) {
cc.close();
}
dispose();
}
} );