韩陆，你好

你的书，麻烦写的清楚一点，多写一些，也许还能多点稿费。小韩，写书认真一点。第13页上来就用maven命令行创建项目，这就有问题啊，没有pom.xml文件mvn这个命令怎么跑的起来呢？所以正确的过程是这样的：eclipse上创建项目创建的结果是这样的：创建过程，先创建一个maven项目

然后archetypes选择书中指出的jersey-quickstart-grizzly2

创建项目之后，实际上会报错默认情况下eclipse创建出来的pom.xml文件中提供的jersey-version的版本是1.20但实际上mavenrepository上提供的最新版也就是1.19.4，所以修改一下正常情况下，创建项目完毕，我们测试一下：首先当然是参考书中的命令行方式，用curl这个命令去执行，这需要首先下载配置curl配置环境变量现在都准备好了我们先看看这个项目的内容，它都自动帮我们生成了什么：MyResource.java

package my.restfulwork.jerseyone;import javax.ws.rs.GET;import javax.ws.rs.Path;import javax.ws.rs.Produces;// The Java class will be hosted at the URI path "/myresource"@Path("/myresource")public class MyResource {    // TODO: update the class to suit your needs        // The Java method will process HTTP GET requests    @GET     // The Java method will produce content identified by the MIME Media    // type "text/plain"    @Produces("text/plain")    public String getIt() {        return "Got it!";    }}

Main.java

package my.restfulwork.jerseyone;import com.sun.jersey.api.container.grizzly2.GrizzlyServerFactory;import com.sun.jersey.api.core.PackagesResourceConfig;import com.sun.jersey.api.core.ResourceConfig;import org.glassfish.grizzly.http.server.HttpServer;import javax.ws.rs.core.UriBuilder;import java.io.IOException;import java.net.URI;public class Main {    private static int getPort(int defaultPort) {        //grab port from environment, otherwise fall back to default port 9998        String httpPort = System.getProperty("jersey.test.port");        if (null != httpPort) {            try {                return Integer.parseInt(httpPort);            } catch (NumberFormatException e) {            }        }        return defaultPort;    }    private static URI getBaseURI() {        return UriBuilder.fromUri("http://localhost/").port(getPort(9998)).build();    }    public static final URI BASE_URI = getBaseURI();        protected static HttpServer startServer() throws IOException {        ResourceConfig resourceConfig = new PackagesResourceConfig("my.restfulwork.jerseyone");        System.out.println("Starting grizzly2...");        return GrizzlyServerFactory.createHttpServer(BASE_URI, resourceConfig);    }        public static void main(String[] args) throws IOException {        // Grizzly 2 initialization        HttpServer httpServer = startServer();        System.out.println(String.format("Jersey app started with WADL available at "                + "%sapplication.wadl\nHit enter to stop it...",                BASE_URI));        System.in.read();        httpServer.stop();    }    }

MainTest.java

package my.restfulwork.jerseyone;import org.glassfish.grizzly.http.server.HttpServer;import com.sun.jersey.core.header.MediaTypes;import com.sun.jersey.api.client.Client;import com.sun.jersey.api.client.WebResource;import junit.framework.TestCase;public class MainTest extends TestCase {    private HttpServer httpServer;        private WebResource r;    public MainTest(String testName) {        super(testName);    }    @Override    protected void setUp() throws Exception {        super.setUp();                //start the Grizzly2 web container         httpServer = Main.startServer();        // create the client        Client c = Client.create();        r = c.resource(Main.BASE_URI);    }    @Override    protected void tearDown() throws Exception {        super.tearDown();        httpServer.stop();    }    /**     * Test to see that the message "Got it!" is sent in the response.     */    public void testMyResource() {        String responseMsg = r.path("myresource").get(String.class);        assertEquals("Got it!", responseMsg);    }    /**     * Test if a WADL document is available at the relative path     * "application.wadl".     */    public void testApplicationWadl() {        String serviceWadl = r.path("application.wadl").                accept(MediaTypes.WADL).get(String.class);                        assertTrue(serviceWadl.length() > 0);    }}

上述三个文件是项目自己生成的java代码

我们运行Main.javaconsole中的信息如下所示：

我们使用cmd客户端，执行命令行语句：

执行结果，和书中写的一样。