resourcebean3.java

resetful样式的ws样例,一种面向资源的webservices服务

/*
 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 * 
 * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
 * 
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License. You can obtain
 * a copy of the License at https://jersey.dev.java.net/CDDL+GPL.html
 * or jersey/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 * 
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at jersey/legal/LICENSE.txt.
 * Sun designates this particular file as subject to the "Classpath" exception
 * as provided by Sun in the GPL Version 2 section of the License file that
 * accompanied this code.  If applicable, add the following below the License
 * Header, with the fields enclosed by brackets [] replaced by your own
 * identifying information: "Portions Copyrighted [year]
 * [name of copyright owner]"
 * 
 * Contributor(s):
 * 
 * If you wish your version of this file to be governed by only the CDDL or
 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license."  If you don't indicate a single choice of license, a
 * recipient has the option to distribute your version of this file under
 * either the CDDL, the GPL Version 2 or to extend the choice of license to
 * its licensees as provided above.  However, if you add GPL Version 2 code
 * and therefore, elected the GPL Version 2 license, then the option applies
 * only if the new code is made subject to such option by the copyright
 * holder.
 */

package com.sun.jersey.samples.servlet.resources;

import com.sun.jersey.api.representation.Form;
import java.net.URL;
import javax.activation.DataSource;
import javax.activation.FileDataSource;
import javax.ws.rs.GET;
import javax.ws.rs.POST;
import javax.ws.rs.ProduceMime;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.MultivaluedMap;
import javax.ws.rs.core.Response;
import javax.ws.rs.core.UriInfo;

@Path("/resource3/{arg1}/{arg2}")
public class ResourceBean3  {    
    @Context UriInfo uriInfo;
    
    int count =0;
    
    @POST
    public void doPost() {
        System.out.println("ResourceBean3 POST");
    }
    
    @GET
    public Response doGet() {
        MultivaluedMap<String, String> params = uriInfo.getPathParameters();
        String arg1 = params.getFirst("arg1");
        String arg2 = params.getFirst("arg2");
        for (String key : uriInfo.getQueryParameters().keySet())
            System.out.println("key: " + key + " value: " + uriInfo.getQueryParameters().getFirst(key));
        int rep = Integer.parseInt(uriInfo.getQueryParameters().getFirst("rep"));
       
        String help = "<pre>Received args: arg1: "+arg1+" arg2: "+arg2+"\n"
                    +"Please specify a \"rep\" queryParameter using one of the following values\n"
                    +"For example, http://localhost:/rest/test2/arg1/arg2?rep=1\n"
                    +"Valid Representations:\n"
                    +"\t0 - StringRepresentation of this message\n"
                    +"\t1 - StringRepresentation\n"
                    +"\t2 - FormURLEncodedRepresentation\n"
                    +"\t3 - DataSourceRepresentation\n</pre>";
        Response r = null;
        System.out.println("rep: "+rep);
        switch (rep) {
            case 0:                        
                r = Response.ok(help, "text/plain").
                        header("resource3-header", "text/plain").build();
                break;
            case 1:
                r = Response.ok(getStringRep(arg1, arg2), "text/plain").
                        header("resource3-header", "text/plain").build();
                break;
            case 2:
                r = Response.ok(getFormURLEncodedRep(arg1, arg2), "text/plain").
                        header("resource3-header", "text/plain").build();
                break;
            case 3:
                r = Response.ok(getImageRep(), "text/plain").
                        header("resource3-header", "text/plain").build();
                break;
            default :
                r = Response.ok(help, "text/plain").build();
                break;
        } 
       
        
        return r;
    }
    
    @ProduceMime("text/plain")
    @GET
    public String getStringRep(@PathParam("arg1")String arg1, 
            @PathParam("arg2")String arg2) {
        return "representation: StringRepresentation: arg1: "
                        +arg1+" arg2: "+arg2+"\n\n";
    }    
    
    @ProduceMime("application/x-www-form-urlencoded")
    @GET
    public Form getFormURLEncodedRep(
            @PathParam("arg1")String arg1, 
            @PathParam("arg2")String arg2) {
        Form urlProps = new Form();
        urlProps.add("representation", "FormURLEncodedRepresentation");
        urlProps.add("name", "Master Duke");
        urlProps.add("sex", "male");
        urlProps.add("arg1", arg1);
        urlProps.add("arg2", arg2);
        return urlProps;        
    }

    @ProduceMime("image/jpg")
    @GET
    public DataSource getImageRep() {
        URL jpgURL = this.getClass().getResource("java.jpg");
        return new FileDataSource(jpgURL.getFile());
      
    }    
}