unable to run restful webserive

[vasu chowdary]

Hi ,

I am running the following example form resteasy with JAX-RS book.I have used the myeclipse6.0 and tomcat6.0 to run this example.Following is my code

  
CUSTOMER.JAVA


package com.restfully.shop.domain;

public class Customer {
	private int id;
	private String firstName;
	private String lastName;
	private String street;
	private String city;
	private String state;
	private String zip;
	private String country;
	public int getId() {
		return id;
	}
	public void setId(int id) {
		this.id = id;
	}
	public String getFirstName() {
		return firstName;
	}
	public void setFirstName(String firstName) {
		this.firstName = firstName;
	}
	public String getLastName() {
		return lastName;
	}
	public void setLastName(String lastName) {
		this.lastName = lastName;
	}
	public String getStreet() {
		return street;
	}
	public void setStreet(String street) {
		this.street = street;
	}
	public String getCity() {
		return city;
	}
	public void setCity(String city) {
		this.city = city;
	}
	public String getState() {
		return state;
	}
	public void setState(String state) {
		this.state = state;
	}
	public String getZip() {
		return zip;
	}
	public void setZip(String zip) {
		this.zip = zip;
	}
	public String getCountry() {
		return country;
	}
	public void setCountry(String country) {
		this.country = country;
	}
	
}

CustomerResource.java

package com.restfully.shop.services;

import com.restfully.shop.domain.Customer;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.NodeList;

import javax.ws.rs.Consumes;
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.WebApplicationException;
import javax.ws.rs.core.Response;
import javax.ws.rs.core.StreamingOutput;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.PrintStream;
import java.net.URI;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.atomic.AtomicInteger;

@Path("/customers")
public class CustomerResource {
   private Map<Integer, Customer> customerDB = new ConcurrentHashMap<Integer, Customer>();
   private AtomicInteger idCounter = new AtomicInteger();

   public CustomerResource() {
   }

   @POST
   @Consumes("application/xml")
   public Response createCustomer(InputStream is) {
	  System.out.println("In creating customer"); 
      Customer customer = readCustomer(is);
      customer.setId(idCounter.incrementAndGet());
      customerDB.put(customer.getId(), customer);
      System.out.println("Created customer " + customer.getId());
      return Response.created(URI.create("/customers/" + customer.getId())).build();

   }

   @GET
   @Path("{id}")
   @Produces("application/xml")
   public StreamingOutput getCustomer(@PathParam("id") int id) {
      final Customer customer = customerDB.get(id);
      if (customer == null) {
         throw new WebApplicationException(Response.Status.NOT_FOUND);
      }
      return new StreamingOutput() {
         public void write(OutputStream outputStream) throws IOException, WebApplicationException {
            outputCustomer(outputStream, customer);
         }
      };
   }

   @PUT
   @Path("{id}")
   @Consumes("application/xml")
   public void updateCustomer(@PathParam("id") int id, InputStream is) {
      Customer update = readCustomer(is);
      Customer current = customerDB.get(id);
      if (current == null) throw new WebApplicationException(Response.Status.NOT_FOUND);

      current.setFirstName(update.getFirstName());
      current.setLastName(update.getLastName());
      current.setStreet(update.getStreet());
      current.setState(update.getState());
      current.setZip(update.getZip());
      current.setCountry(update.getCountry());
   }


   protected void outputCustomer(OutputStream os, Customer cust) throws IOException {
      PrintStream writer = new PrintStream(os);
      writer.println("<customer id=\"" + cust.getId() + "\">");
      writer.println("   <first-name>" + cust.getFirstName() + "</first-name>");
      writer.println("   <last-name>" + cust.getLastName() + "</last-name>");
      writer.println("   <street>" + cust.getStreet() + "</street>");
      writer.println("   <city>" + cust.getCity() + "</city>");
      writer.println("   <state>" + cust.getState() + "</state>");
      writer.println("   <zip>" + cust.getZip() + "</zip>");
      writer.println("   <country>" + cust.getCountry() + "</country>");
      writer.println("</customer>");
   }

   protected Customer readCustomer(InputStream is) {
      try {
         DocumentBuilder builder = DocumentBuilderFactory.newInstance().newDocumentBuilder();
         Document doc = builder.parse(is);
         Element root = doc.getDocumentElement();
         Customer cust = new Customer();
         if (root.getAttribute("id") != null && !root.getAttribute("id").trim().equals(""))
            cust.setId(Integer.valueOf(root.getAttribute("id")));
         NodeList nodes = root.getChildNodes();
         for (int i = 0; i < nodes.getLength(); i++) {
            Element element = (Element) nodes.item(i);
            if (element.getTagName().equals("first-name")) {
               cust.setFirstName(element.getTextContent());
            }
            else if (element.getTagName().equals("last-name")) {
               cust.setLastName(element.getTextContent());
            }
            else if (element.getTagName().equals("street")) {
               cust.setStreet(element.getTextContent());
            }
            else if (element.getTagName().equals("city")) {
               cust.setCity(element.getTextContent());
            }
            else if (element.getTagName().equals("state")) {
               cust.setState(element.getTextContent());
            }
            else if (element.getTagName().equals("zip")) {
               cust.setZip(element.getTextContent());
            }
            else if (element.getTagName().equals("country")) {
               cust.setCountry(element.getTextContent());
            }
         }
         return cust;
      }
      catch (Exception e) {
         throw new WebApplicationException(e, Response.Status.BAD_REQUEST);
      }
   }

}

ShoppingApplication.java

package com.restfully.shop.services;

import javax.ws.rs.core.Application;
import java.util.HashSet;
import java.util.Set;

public class ShoppingApplication extends Application {
   private Set<Object> singletons = new HashSet<Object>();
   private Set<Class><?>> empty = new HashSet<Class><?>>();

   public ShoppingApplication() {
	   System.out.println("hi");
      singletons.add(new CustomerResource());
   }

   @Override
   public Set<Class><?>> getClasses() {
      return empty;
   }

   @Override
   public Set<Object> getSingletons() {
      return singletons;
   }
}

web.xml


<?xml version="1.0"?>
<!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
        "http://java.sun.com/dtd/web-app_2_3.dtd">

<web-app>
    <display-name>Archetype Created Web Application</display-name>

    <servlet>
        <servlet-name>Resteasy</servlet-name>
        <servlet-class>
            org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher
        </servlet-class>
        
        <init-param>
            <param-name>javax.ws.rs.Application</param-name>
            <param-value>com.restfully.shop.services.ShoppingApplication</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>

    <servlet-mapping>
        <servlet-name>Resteasy</servlet-name>
        <url-pattern>/*</url-pattern>
    </servlet-mapping>

</web-app>

I have successfully compiled above and deployed in tomcat.After that i have tested with junit4 with following code.

CustomerResourceTest


package com.restfully.shop.test;

import org.junit.Assert;
import org.junit.Test;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URL;


/**
 * @author <a href="mailto:[e-mail]" rel="nofollow">Bill Burke</a>
 * @version $Revision: 1 $
 */
public class CustomerResourceTest
{
   @Test
   public void testCustomerResource() throws Exception
   {
      System.out.println("*** Create a new Customer ***");
      // Create a new customer
      String newCustomer = "<customer>"
              + "<first-name>Bill</first-name>"
              + "<last-name>Burke</last-name>"
              + "<street>256 Clarendon Street</street>"
              + "<city>Boston</city>"
              + "<state>MA</state>"
              + "<zip>02115</zip>"
              + "<country>USA</country>"
              + "</customer>";

      URL postUrl = new URL("http://localhost:8080/customers");
      HttpURLConnection connection = (HttpURLConnection) postUrl.openConnection();
      connection.setDoOutput(true);
      connection.setInstanceFollowRedirects(false);
      connection.setRequestMethod("POST");
      connection.setRequestProperty("Content-Type", "application/xml");
      OutputStream os = connection.getOutputStream();
      os.write(newCustomer.getBytes());
      os.flush();
      System.out.println(connection.getResponseCode());
      Assert.assertEquals(HttpURLConnection.HTTP_CREATED, connection.getResponseCode());
      System.out.println("Location: " + connection.getHeaderField("Location"));
      connection.disconnect();


      // Get the new customer
      System.out.println("*** GET Created Customer **");
      URL getUrl = new URL("http://localhost:8080/customers/1");
      connection = (HttpURLConnection) getUrl.openConnection();
      connection.setRequestMethod("GET");
      System.out.println("Content-Type: " + connection.getContentType());

      BufferedReader reader = new BufferedReader(new
              InputStreamReader(connection.getInputStream()));

      String line = reader.readLine();
      while (line != null)
      {
         System.out.println(line);
         line = reader.readLine();
      }
      Assert.assertEquals(HttpURLConnection.HTTP_OK, connection.getResponseCode());
      connection.disconnect();

      // Update the new customer.  Change Bill's name to William
      String updateCustomer = "<customer>"
              + "<first-name>William</first-name>"
              + "<last-name>Burke</last-name>"
              + "<street>256 Clarendon Street</street>"
              + "<city>Boston</city>"
              + "<state>MA</state>"
              + "<zip>02115</zip>"
              + "<country>USA</country>"
              + "</customer>";
      connection = (HttpURLConnection) getUrl.openConnection();
      connection.setDoOutput(true);
      connection.setRequestMethod("PUT");
      connection.setRequestProperty("Content-Type", "application/xml");
      os = connection.getOutputStream();
      os.write(updateCustomer.getBytes());
      os.flush();
      Assert.assertEquals(HttpURLConnection.HTTP_NO_CONTENT, connection.getResponseCode());
      connection.disconnect();

      // Show the update
      System.out.println("**** After Update ***");
      connection = (HttpURLConnection) getUrl.openConnection();
      connection.setRequestMethod("GET");

      System.out.println("Content-Type: " + connection.getContentType());
      reader = new BufferedReader(new
              InputStreamReader(connection.getInputStream()));

      line = reader.readLine();
      while (line != null)
      {
         System.out.println(line);
         line = reader.readLine();
      }
      Assert.assertEquals(HttpURLConnection.HTTP_OK, connection.getResponseCode());
      connection.disconnect();
   }
}

If i run this with eclipse in built tomcat then i am getting 400 exception.

If run this with external tomcat then i am getting 404 exception.

Following is web app architecture

customers

------WEB-INF
----------web.xml
----------classes
----------lib

is there any mistake in my code?

[Prash Negu]

I think the resource name you specify using @PATH is relative to application context. I dont see you mentioned context name anywhere. The url should be http://localhost:8080/<context>/customer.

Thanks,
Prashant