Introduction
From Official Site:
Jetty provides an HTTP server, HTTP client, and javax.servlet container. These components are open source and available for commercial use and distribution.
Jetty is used in a wide variety of projects and products. Jetty can be embedded in devices, tools, frameworks, application servers, and clusters. See the Jetty Powered page for more uses of Jetty.
----
This post will talking about how to use embedded jetty to create an 'executable' web app --
double click on a batch file,
then the server started,
and then the browser is opened to a web page in that web app
You can find the binary distribution from official site (http://dist.codehaus.org/jetty/), all required jars are in it.
The Program
JettyClass.java
Config a jetty server and start it
package jetty;
import org.mortbay.jetty.Server;
import org.mortbay.jetty.webapp.WebAppContext;
/**
* start an embedded jetty server
*
*/
public class JettyClass {
public static void main(String[] args) throws Exception {
// use 8080 port
Server server = new Server(8080);
WebAppContext context = new WebAppContext();
// use relative path, start from project root
context.setResourceBase("src/webapp/content");
// page address: http://localhost:8080/EmbeddingJettyTest
context.setContextPath("/EmbeddingJettyTest");
context.setParentLoaderPriority(true);
server.setHandler(context);
server.start();
server.join();
}
}
TestListener.java
Just print some message when server startup to make sure web.xml works fine
package test;
import javax.servlet.ServletContextEvent;
import javax.servlet.ServletContextListener;
/**
* print message when server start,
* to make sure web.xml works fine
*
*/
public class TestListener implements ServletContextListener {
@Override
public void contextDestroyed(ServletContextEvent arg0) {
// TODO Auto-generated method stub
}
@Override
public void contextInitialized(ServletContextEvent arg0) {
// TODO Auto-generated method stub
System.out.println("contextInitialized");
}
}
web.xml
Define the TestListener in it
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
version="3.0">
<!-- add a listener to make sure this config file works -->
<listener>
<listener-class>test.TestListener</listener-class>
</listener>
</web-app>index.jsp
Use some scriptlet to output some message to make sure jsp works fine
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<html>
<head>
<meta http-equiv="Content-Type"
content="text/html; charset=UTF-8">
</head>
<body>
<!-- write some scriptlet to make sure jsp works -->
<% String msg = "Hello World"; %>
<%= msg %>
</body>
</html>start.bat
Execute the JettyClass and open browser (rem is keyword for comment)
rem /* define library folder */
set lib=.\lib
rem /* folder bin as classpath */
set NEWPATH=bin
rem /* for each *.jar in library folder, append it after classpath */
for %%1 in (%lib%\*.jar) do call :concat %%1
rem /* start chrome before server start */
start chrome http://localhost:8080/EmbeddingJettyTest/
rem /* Execute JettyClass */
java -Xmx128m -classpath %NEWPATH% jetty.JettyClass
goto :eof
rem /* sub function to append string */
:concat
set NEWPATH=%NEWPATH%;%1
goto :eofThe Result
View the demo flash on line
http://screencast.com/t/SAgNUwtilf4
Reference
Embedding Jetty
https://docs.codehaus.org/display/JETTY/Embedding+Jetty
batch file string concatenation
http://stackoverflow.com/questions/2027070/batch-file-string-concatenation
Download
Demo flash
https://github.com/benbai123/JSP_Servlet_Practice/blob/master/demo_src/Server/Jetty/EmbeddedJettyTest.swf
Full project is at github
https://github.com/benbai123/JSP_Servlet_Practice/tree/master/Practice/WebServer/JettyTest
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