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我想創建一個hello例如REST服務，我遇到了以下錯誤：REST問題com.sun.jersey.api.container.ContainerException：本ResourceConfig實例不包含任何根資源類
SEVERE: Allocate exception for servlet jersey-serlvet
com.sun.jersey.api.container.ContainerException: The ResourceConfig instance does not contain any root resource classes.
at com.sun.jersey.server.impl.application.RootResourceUriRules.<init>(RootResourceUriRules.java:99)
at com.sun.jersey.server.impl.application.WebApplicationImpl._initiate(WebApplicationImpl.java:1298)
at com.sun.jersey.server.impl.application.WebApplicationImpl.access$700(WebApplicationImpl.java:169)
at com.sun.jersey.server.impl.application.WebApplicationImpl$13.f(WebApplicationImpl.java:775)
at com.sun.jersey.server.impl.application.WebApplicationImpl$13.f(WebApplicationImpl.java:771)
at com.sun.jersey.spi.inject.Errors.processWithErrors(Errors.java:193)
at com.sun.jersey.server.impl.application.WebApplicationImpl.initiate(WebApplicationImpl.java:771)
at com.sun.jersey.server.impl.application.WebApplicationImpl.initiate(WebApplicationImpl.java:766)
at com.sun.jersey.spi.container.servlet.ServletContainer.initiate(ServletContainer.java:488)
at com.sun.jersey.spi.container.servlet.ServletContainer$InternalWebComponent.initiate(ServletContainer.java:318)
at com.sun.jersey.spi.container.servlet.WebComponent.load(WebComponent.java:609)
at com.sun.jersey.spi.container.servlet.WebComponent.init(WebComponent.java:210)
at com.sun.jersey.spi.container.servlet.ServletContainer.init(ServletContainer.java:373)
at com.sun.jersey.spi.container.servlet.ServletContainer.init(ServletContainer.java:556)
at javax.servlet.GenericServlet.init(GenericServlet.java:160)
at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1266)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1185)
at org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:857)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:136)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:169)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:999)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:565)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:309)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
我查看了所有相關的帖子，也在其他博客/論壇上，但無法解決問題。
下面是我的servlet：
package com.mkyong.rest;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.core.Response;
@Path("/hello")
public class HelloWorldService {
@GET
@Path("/{param}")
public Response getMsg(@PathParam("param") String msg) {
String output = "Jersey say : " + msg;
return Response.status(200).entity(output).build();
}
}
web.xml文件：
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd「> 基於REST的Web應用程序
<servlet>
<servlet-name>jersey-serlvet</servlet-name>
<servlet-class>
com.sun.jersey.spi.container.servlet.ServletContainer
</servlet-class>
<init-param>
<param-name>com.sun.jersey.config.property.packages</param-name>
<param-value>com.mkyong.rest</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>jersey-serlvet</servlet-name>
<url-pattern>/rest/*</url-pattern>
</servlet-mapping>
和項目結構：
我得到的錯誤，當我嘗試訪問的網址：http://localhost:8090/RESTfulExample/rest/hello/test
我一直在努力了幾個小時來解決這個問題，但沒有任何的運氣。有沒有人在我的項目中看到錯誤？
謝謝
你是如何運行它？ – Welsh
我使用Eclipse Indigo。 – panipsilos
我有同樣的問題 –