Servlet类不是javax.servlet.Servlet [英] Servlet class is not a javax.servlet.Servlet
问题描述
我正在开发一个GWT应用程序，但是当我将它部署到Equinox-jetty服务器时，我得到了以下异常：
I am developing a GWT application, but I got the following Exception when I deploy it into a Equinox-jetty server:
404 Servlet class com.cartif.gui.autentication.server.AppServiceImpl is not a javax.servlet.Servlet <html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"/>
<title>Error 404 Servlet class com.cartif.gui.autentication.server.AppServiceImpl is not a javax.servlet.Servlet</title>
</head>
<body><h2>HTTP ERROR 404</h2>
<p>Problem accessing /baasGUIAutentication/baasgui/autentication. Reason:
<pre>
Servlet class com.cartif.gui.autentication.server.AppServiceImpl is not a javax.servlet.Servlet</pre></p><h3>Caused by:</h3><pre>javax.servlet.UnavailableException: Servlet class com.cartif.gui.autentication.server.AppServiceImpl is not a javax.servlet.Servlet
at org.mortbay.jetty.servlet.ServletHolder.checkServletType(ServletHolder.java:362)
at org.mortbay.jetty.servlet.ServletHolder.doStart(ServletHolder.java:243)
at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
at org.mortbay.jetty.servlet.ServletHandler.initialize(ServletHandler.java:685)
at org.mortbay.jetty.servlet.Context.startContext(Context.java:140)
at org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1250)
at org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:517)
at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:467)
at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
at org.springframework.osgi.web.deployer.jetty.JettyWarDeployer.startWebAppContext(JettyWarDeployer.java:210)
at org.springframework.osgi.web.deployer.jetty.JettyWarDeployer.startDeployment(JettyWarDeployer.java:122)
at org.springframework.osgi.web.deployer.support.AbstractWarDeployer.deploy(AbstractWarDeployer.java:93)
at org.springframework.osgi.web.extender.internal.activator.WarLoaderListener$DeploymentManager$DeployTask.doRun(WarLoaderListener.java:257)
at org.springframework.osgi.web.extender.internal.activator.WarLoaderListener$DeploymentManager$BaseTask.run(WarLoaderListener.java:215)
at org.springframework.scheduling.timer.DelegatingTimerTask.run(DelegatingTimerTask.java:66)
at java.util.TimerThread.mainLoop(Unknown Source)
at java.util.TimerThread.run(Unknown Source)
</pre>
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AppServiceImpl类的代码头是：
The code header for the AppServiceImpl class is:
public class AppServiceImpl extends RemoteServiceServlet implements AppService
和AppService服务：
And AppService:
@RemoteServiceRelativePath("autentication")
public interface AppService extends RemoteService {
User getUser(String user, String pass) throws Exception;
}
此外，web.xml声明如下servlet：
Moreover, the web.xml declares the servlet as follows:
<servlet>
<servlet-name>baasguiServlet</servlet-name>
<servlet-class>com.cartif.gui.autentication.server.AppServiceImpl</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>baasguiServlet</servlet-name>
<url-pattern>/baasgui/autentication</url-pattern>
</servlet-mapping>
而baasgui是编译GWT Java代码的文件夹。
And baasgui is the folder where the GWT Java code is compiled. I have also checked the javax.servlet class and it is used only once.
任何人都可以帮助我吗？
Could anyone help me??
非常感谢你提前！
Jose
Thank you very much in advance!! Jose
推荐答案
我得到了解决方案。在GWT库包中，我不得不添加以下几行：
I got the solution. In the GWT libraries bundle I had to add the following lines:
Bundle-SymbolicName: gwtlibraries; singleton:=true
Require-Bundle: javax.servlet
代替导入包，标签Require-Bundle和单身包的一部分。另外在GUI清单中，我必须添加下一行：
Instead of importing packages, the tag Require-Bundle and the part of singleton bundle. Also in the GUI manifest I had to add the next line:
Bundle-SymbolicName: GUI; singleton:=true
Require-Bundle: gwtlibraries //apart from importing the specific libraries
Eclipse-RegisterBuddy: com.cartif.gwt
Eclipse-BuddyPolicy: registered
这并没有发生在我已经部署的以前版本的GWT库中，但是bundle结构不同，因为现在我正在使用解压后的库和之前的压缩过的jar文件。
This was not happening with the previous versions of the GWT libraries I had deployed, but the bundle structure was different because now I am using the unzipped libraries and in previous ones the zipped jar files.
感谢您的协作和帮助!!!!
Thank you for your collaboration and help!!!!
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