使用Jersey测试restful webservice时的HTTP状态404

Question

I have been trying to develop and deploy a restful web service using Jersey. I have followed the documentation from docs.oracle.com and also various other sources but getting HTTP Status 404 upon testing the service.

Following is my web.xml

<?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_2_5.xsd" id="WebApp_ID" version="2.5">
  <display-name>Hello World</display-name>

  <servlet>
      <servlet-name>Hello</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.rest.jersey.test</param-value>
      </init-param>
      <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
      <servlet-name>Hello</servlet-name>
      <url-pattern>/resources/*</url-pattern>
  </servlet-mapping>
</web-app>

And this is my service.

package com.rest.jersey.test;

import javax.ws.rs.Path;
import javax.ws.rs.GET;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;

@Path("/hello")
public class HelloWorld {
    @GET
    @Produces(MediaType.TEXT_PLAIN)
    public String response(){
            return "Hello World!";
    }
}

When I try to hit the URL

http://localhost:8080/TestRestWithJersey/resources/hello

it gives HTTP Status 404 error. Please help me regarding this.

I just checked log file of Eclipse and it doesn't say anything other than this:

!MESSAGE No projects found for [/workspace/TestRestWithJersey/WebContent/WEB-INF/web.xml]

I didn't understand the message, can you help me on this?

Also, the tomcat log when hitting url says

SEVERE: Error loading WebappClassLoader
  context: /TestRestWithJersey
  delegate: false
  repositories:
    /WEB-INF/classes/
----------> Parent Classloader:
org.apache.catalina.loader.StandardClassLoader@5362ab
 com.sun.jersey.spi.container.servlet.ServletContainer
java.lang.ClassNotFoundException: com.sun.jersey.spi.container.servlet.ServletContainer

I added jersey-server.jar along with jsr-311.jar

Also tried earlier with single jersey-bundle.jar

The problem is still same.

Any help is appreciated.

Answer 1

When you want to use a servlet container to deploy your application you also need to add jersey-servlet (see User Guide ) module as a dependency of your project. If you're using maven, simply put

<dependency>
    <groupId>com.sun.jersey</groupId>
    <artifactId>jersey-servlet</artifactId>
    <version>1.15</version>
</dependency>

into your pom.xml file.

If you want to use jersey-bundle instead please make sure you have asm on your classpath because package scanning (triggered by com.sun.jersey.config.property.packages init-param in your web.xml ) needs this library to function properly.