我正在尝试在Android的Jetty上运行Jersey.

我创建了一个使用Jersey Servlet实例化Jetty服务器的Android.无论如何,当我启动Jetty并访问REST资源(在我的情况下：http://192.168.1.12:8080/api/hello)时,我收到带有消息的ContainerException：ResourceConfig实例不包含任何根资源类. (请参见下面的异常堆栈跟踪).

知道为什么吗？

更多细节：

Logcat给出以下严重警告.

在资源和/或提供程序类中检测到以下错误和警告：

严重：缺少字段依赖性：私有java.lang.ThreadLocal com.sun.jersey.server.impl.container.servlet.JSPTemplateProcessor.requestInvoker
严重：缺少字段依赖性：私有java.lang.ThreadLocal com.sun.jersey.server.impl.container.servlet.JSPTemplateProcessor.requestInvoker

这很奇怪,因为java.lang.ThreadLocal可用于Android,并且HttpServletRequest和HttpServletResponse应该可用,因为我在libs文件夹中包含了servlet-api-2.5.jar.

Jersey依赖于一些我必须添加到项目中并设置–core-的javax库(jaxb-api-2.2.2.jar,jndi-1.2.1.jar,stax-api-1.0-2.jar).临时使用库参数来忽略有关javax软件包作为依赖项的dex警告.

我还从球衣核心jar中删除了以下类(从com.sun.jersey.core.impl.provider.entity包中的RenderedImageProvider,DataSourceProvider,MimeMultipartProvider),以避免依赖于java.awt和javax.mail.

EXCEPTION跟踪：

javax.servlet.UnavailableException: com.sun.jersey.api.container.ContainerException: The ResourceConfig instance does not contain any root resource classes.
at org.eclipse.jetty.servlet.ServletHolder.makeUnavailable(ServletHolder.java:409)
at org.eclipse.jetty.servlet.ServletHolder.initServlet(ServletHolder.java:450)
at org.eclipse.jetty.servlet.ServletHolder.getServlet(ServletHolder.java:331)
at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:476)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:119)
at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:517)
at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:226)
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:935)
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:404)
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:184)
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:870)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)
at org.eclipse.jetty.server.Server.handle(Server.java:346)
at org.eclipse.jetty.server.HttpConnection.handleRequest(HttpConnection.java:596)
at org.eclipse.jetty.server.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:1051)
at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:592)
at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:214)
at org.eclipse.jetty.server.HttpConnection.handle(HttpConnection.java:426)
at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:520)
at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:40)
at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:528)
at java.lang.Thread.run(Thread.java:1019)

启动服务器Android活动：

public class StartServerActivity extends Activity {

private Server webServer;

private final static String LOG_TAG = "Jetty";


/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    setContentView(R.layout.main);

    System.setProperty("java.net.preferIPv4Stack", "true");
    System.setProperty("java.net.preferIPv6Addresses", "false");

    webServer = new Server(8080);

    ServletHolder servletHolder = new ServletHolder(com.sun.jersey.spi.container.servlet.ServletContainer.class);
    servletHolder.setInitParameter("com.sun.jersey.config.property.packages", "com.famenu.server.resources");

    ServletContextHandler servletContextHandler = new ServletContextHandler(webServer, "/api", true, false);
    servletContextHandler.addServlet(servletHolder, "/hello");

    webServer.setHandler(servletContextHandler);


    try {
        webServer.start();
        Log.d(LOG_TAG, "started Web server");

    }
    catch (Exception e) {
        Log.d(LOG_TAG, "unexpected exception starting Web server: " + e);
    }

}

}

球衣资源：

package com.famenu.server.resources;

导入javax.ws.rs.GET;
导入javax.ws.rs.Path;
导入javax.ws.rs.Produces;

@路径(”/”)
公共类HelloResource {

@GET
@Produces("text/plain")
public String getMsg() {

    return "Hello Resource";

}

}

我正在使用Jetty 7.3.0.v20110203,Jersey 1.12,Android 1.6
在另一个异常解释为here之后,我到达了这一点

解决方法:

不要在不支持的平台上使用软件包/其他任何扫描方式.

Classnames属性：com.sun.jersey.config.property.classnames应该适合您(您需要显式声明所有根资源(带@Path注释的类)).