jersey NoClassDefFoundError: org/objectweb/asm/ClassVisitor exception

Question

First time I'm trying a WebService using jersey. The below code I got from some blog. I am getting following 500 error when I'm trying Java Web service using jersey client

javax.servlet.ServletException: Servlet.init() for servlet Jersey Root REST Service threw exception     org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)     org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)     org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)     org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)     org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1008)     org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)     org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)     java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)     java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)     java.lang.Thread.run(Unknown Source)  root cause  java.lang.NoClassDefFoundError: org/objectweb/asm/ClassVisitor     com.sun.jersey.api.core.ScanningResourceConfig.init(ScanningResourceConfig.java:79)     com.sun.jersey.api.core.servlet.WebAppResourceConfig.init(WebAppResourceConfig.java:102)     com.sun.jersey.api.core.servlet.WebAppResourceConfig.<init>(WebAppResourceConfig.java:89)     com.sun.jersey.api.core.servlet.WebAppResourceConfig.<init>(WebAppResourceConfig.java:74)     com.sun.jersey.spi.container.servlet.WebComponent.getWebAppResourceConfig(WebComponent.java:672)     com.sun.jersey.spi.container.servlet.ServletContainer.getDefaultResourceConfig(ServletContainer.java:415)     com.sun.jersey.spi.container.servlet.ServletContainer.getDefaultResourceConfig(ServletContainer.java:582)     com.sun.jersey.spi.container.servlet.WebServletConfig.getDefaultResourceConfig(WebServletConfig.java:87)     com.sun.jersey.spi.container.servlet.WebComponent.createResourceConfig(WebComponent.java:703)     com.sun.jersey.spi.container.servlet.WebComponent.createResourceConfig(WebComponent.java:678)     com.sun.jersey.spi.container.servlet.WebComponent.init(WebComponent.java:203)     com.sun.jersey.spi.container.servlet.ServletContainer.init(ServletContainer.java:374)     com.sun.jersey.spi.container.servlet.ServletContainer.init(ServletContainer.java:557)     javax.servlet.GenericServlet.init(GenericServlet.java:160)     org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)     org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)     org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)     org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)     org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1008)     org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)     org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)     java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)     java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)     java.lang.Thread.run(Unknown Source)' 

Below is my web.xml file

<?xml version="1.0" encoding="UTF-8"?> <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">   <display-name>RestFulWeb</display-name>   <welcome-file-list>     <welcome-file>index.html</welcome-file>     <welcome-file>index.htm</welcome-file>     <welcome-file>index.jsp</welcome-file>     <welcome-file>default.html</welcome-file>     <welcome-file>default.htm</welcome-file>     <welcome-file>default.jsp</welcome-file>   </welcome-file-list>     <servlet>     <servlet-name>Jersey Root REST Service</servlet-name>     <servlet-class>com.sun.jersey.spi.container.servlet.ServletContainer</servlet-class>   <init-param>   <param-name>com.sun.jersey.api.json.POJOMappingFeature</param-name>   <param-value>true</param-value>  </init-param>  <load-on-startup>1</load-on-startup>   </servlet>   <servlet-mapping>     <servlet-name>Jersey Root REST Service</servlet-name>     <url-pattern>/*</url-pattern>   </servlet-mapping>  </web-app>' 

Here i tried adding the package also that didn't help:

Added only one jar file jersey-bundle-1.14.jar. The following is my Jersey server

package com.rest.server;  import javax.ws.rs.DELETE; import javax.ws.rs.GET; import javax.ws.rs.POST; import javax.ws.rs.PUT; import javax.ws.rs.Path; import javax.ws.rs.PathParam; import javax.ws.rs.Produces; import javax.ws.rs.core.MediaType;  import com.rest.data.Hello;  // POJO, no interface no extends  // The class registers its methods for the HTTP GET request using the @GET annotation.  // Using the @Produces annotation, it defines that it can deliver several MIME types, // text, XML and HTML.   // The browser requests per default the HTML MIME type.  //Sets the path to base URL + /hello @Path("/hello") public class HelloWorldRest {   @GET  @Path("/{param}/")  public String getMsg(@PathParam("param") String msg) {    String output = "Jersey say : " + msg;    return output;   }  @GET  @Path("/world")  public String getFixedMsg(String msg) {    String output = "Jersey say : fixed path" + msg;    return output;   }  // This method is called if TEXT_PLAIN is request  @GET  //@Path("helloworld")  @Produces(MediaType.TEXT_PLAIN)  public String sayPlainTextHello() {   System.out.println("sayPlain");   return "Hello Jersey";  }   // This method is called if XML is request  @GET  //@Path("helloworld")  @Produces(MediaType.TEXT_XML)  public String sayXMLHello() {   System.out.println("sayXML");   return "" + " Hello Jersey" + "";  }   // This method is called if HTML is request  @GET  //@Path("helloworld")  @Produces(MediaType.TEXT_HTML)  public String sayHtmlHello() {   System.out.println("sayHTML");   return "<html> " + "<title>" + "Hello Jersey" + "</title>"     + "<body><h1>" + "Hello Jersey" + "</body></h1>" + "</html> ";  }   // This method is called if JSON is request  @GET  //@Path("helloworld")  @Produces(MediaType.APPLICATION_JSON)  public Hello sayJsonHello() {   return new Hello("Hello", "Jersey");  }   @POST  @Produces(MediaType.APPLICATION_JSON)  public Hello createHello(Hello hello)  {   System.out.println("post");   return hello;  }  }' 

currently I'm trying only with GET hitting the following url http://localhost:8080/RestFulWeb/hello, I am getting the 505 error.

DO i missed any jar files , but i didn't get any compile time error.

Answer 1

This is caused by the missing of asm.jar,

Add this dependency

<dependency>      <groupId>asm</groupId>      <artifactId>asm</artifactId>      <version>3.3.1</version>  </dependency>