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。