Jetty实战之 嵌入式运行Jetty

原文地址：http://blog.csdn.net/kongxx/article/details/7218776

Jetty最常用的一种用法是把Jetty嵌入到自己的Java应用程序中，此时Jetty作为一个后台的Servlet容器运行，接受用户的http请求，下面是一个最简单的嵌入Jetty的用法。

1. 首先使用Maven创建一个java工程

mvn archetype:generate -DgroupId=com.google.code.garbagecan.jettystudy -DartifactId=jettystudy -DarchetypeArtifactId=maven-archetype-quickstart -DinteractiveMode=false

2. 修改pom文件，添加或修改编译和依赖部分

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd"> <modelVersion>4.0.0</modelVersion>
<groupId>com.google.code.garbagecan.jettystudy</groupId>
<artifactId>jettystudy</artifactId>
<packaging>jar</packaging>
<version>1.0-SNAPSHOT</version>
<name>jettystudy</name>
<url>http://maven.apache.org</url>
<build>
<plugins>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<inherited>true</inherited>
<configuration>
<source>1.6</source>
<target>1.6</target>
<debug>true</debug>
</configuration>
</plugin>
</plugins>
</build>
<dependencies>
<dependency>
<groupId>org.eclipse.jetty.aggregate</groupId>
<artifactId>jetty-all</artifactId>
<version>8.0.4.v20111024</version>
<type>jar</type>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
</dependencies>
</project>

3. 创建一个Server类，用了启动Jetty server，并且通过一个HelloHandler来处理浏览器发送过来的请求；

package com.google.code.garbagecan.jettystudy.sample1;

import org.eclipse.jetty.server.Server;

public class MyServer {
public static void main(String[] args) throws Exception {
Server server = new Server(8080);
server.setHandler(new HelloHandler());

server.start();
server.join();
}
}

4. 创建一个Handler类，用了处理所有客户端的请求

package com.google.code.garbagecan.jettystudy.sample1;

import java.io.IOException;

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

import org.eclipse.jetty.server.Request;
import org.eclipse.jetty.server.handler.AbstractHandler;

public class HelloHandler extends AbstractHandler {
public void handle(String target, Request baseRequest, HttpServletRequest request, HttpServletResponse response)
throws IOException, ServletException {
response.setContentType("text/html;charset=utf-8");
response.setStatus(HttpServletResponse.SC_OK);
baseRequest.setHandled(true);
response.getWriter().println("<h1>Hello World</h1>");
response.getWriter().println("Request url: " + target);
}
}

5. 运行MyServer类，然后通过浏览器访问http://localhost:8080/，可以看到“Hello World！”和请求的url。