Jetty实战(1) 嵌入式运行Jetty

本文地址：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。