variantstest.java

resetful样式的ws样例,一种面向资源的webservices服务

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 *
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 * 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
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 * and therefore, elected the GPL Version 2 license, then the option applies
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 * holder.
 */

package com.sun.jersey.impl.resource;

import com.sun.jersey.impl.AbstractResourceTester;
import javax.ws.rs.Path;
import com.sun.jersey.api.client.WebResource;
import com.sun.jersey.api.client.ClientResponse;
import java.io.IOException;
import java.util.List;
import javax.ws.rs.GET;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Request;
import javax.ws.rs.core.Response;
import javax.ws.rs.core.Variant;

/**
 *
 * @author [e-mail]
 */
@SuppressWarnings("unchecked")
public class VariantsTest extends AbstractResourceTester {
    
    public VariantsTest(String testName) {
        super(testName);
    }

    @Path("/")
    public static class LanguageVariantResource {
        @GET
        public Response doGet(@Context Request r) {
            List<Variant> vs = Variant.VariantListBuilder.newInstance().
                    languages("zh").
                    languages("fr").
                    languages("en").add().
                    build();
            
            Variant v = r.selectVariant(vs);
            if (v == null)
                return Response.notAcceptable(vs).build();
            else 
                return Response.ok(v.getLanguage(), v).build();
        }
    }
    
    public void testGetLanguageEn() throws IOException {
        initiateWebApplication(LanguageVariantResource.class);
        WebResource rp = resource("/");
        
        ClientResponse r = rp.
                header("Accept-Language", "en").
                get(ClientResponse.class);
        assertEquals("en", r.getEntity(String.class));
        assertEquals("en", r.getLanguage());
    }
    
    public void testGetLanguageZh() throws IOException {
        initiateWebApplication(LanguageVariantResource.class);
        WebResource rp = resource("/");
        
        ClientResponse r = rp.
                header("Accept-Language", "zh").
                get(ClientResponse.class);
        assertEquals("zh", r.getEntity(String.class));
        assertEquals("zh", r.getLanguage());
    }
    
    public void testGetLanguageMultiple() throws IOException {
        initiateWebApplication(LanguageVariantResource.class);
        WebResource rp = resource("/");
        
        ClientResponse r = rp.
                header("Accept-Language", "en;q=0.3, zh;q=0.4, fr").
                get(ClientResponse.class);
        assertEquals("fr", r.getEntity(String.class));
        assertEquals("fr", r.getLanguage());
    }
    
    @Path("/")
    public static class ComplexVariantResource {
        @GET
        public Response doGet(@Context Request r) {
            List<Variant> vs = Variant.VariantListBuilder.newInstance().
                    mediaTypes(MediaType.valueOf("image/jpeg")).add().
                    mediaTypes(MediaType.valueOf("application/xml")).languages("en-us").add().
                    mediaTypes(MediaType.valueOf("text/xml")).languages("en").add().
                    mediaTypes(MediaType.valueOf("text/xml")).languages("en-us").add().
                    build();
                    
            Variant v = r.selectVariant(vs);
            if (v == null)
                return Response.notAcceptable(vs).build();
            else 
                return Response.ok("GET", v).build();
        }
    }
    
    public void testGetComplex1() throws IOException {
        initiateWebApplication(ComplexVariantResource.class);
        WebResource rp = resource("/");
        
        ClientResponse r = rp.accept("text/xml",
                "application/xml",
                "application/xhtml+xml",
                "image/png",
                "text/html;q=0.9",
                "text/plain;q=0.8",
                "*/*;q=0.5").
                header("Accept-Language", "en-us,en;q=0.5").
                get(ClientResponse.class);
        assertEquals("GET", r.getEntity(String.class));
        assertEquals(MediaType.valueOf("text/xml"), r.getType());
        assertEquals("en-us", r.getLanguage());
    }   
    
    public void testGetComplex2() throws IOException {
        initiateWebApplication(ComplexVariantResource.class);
        WebResource rp = resource("/");
        
        ClientResponse r = rp.accept("text/xml",
                "application/xml",
                "application/xhtml+xml",
                "image/png",
                "text/html;q=0.9",
                "text/plain;q=0.8",
                "*/*;q=0.5").
                header("Accept-Language", "en,en-us").
                get(ClientResponse.class);
        assertEquals("GET", r.getEntity(String.class));
        assertEquals(MediaType.valueOf("text/xml"), r.getType());
        assertEquals("en", r.getLanguage());
    }
    
    public void testGetComplex3() throws IOException {
        initiateWebApplication(ComplexVariantResource.class);
        WebResource rp = resource("/");
        
        ClientResponse r = rp.accept("application/xml",
                "text/xml",
                "application/xhtml+xml",
                "image/png",
                "text/html;q=0.9",
                "text/plain;q=0.8",
                "*/*;q=0.5").
                header("Accept-Language", "en-us,en;q=0.5").
                get(ClientResponse.class);
        assertEquals("GET", r.getEntity(String.class));
        assertEquals(MediaType.valueOf("application/xml"), r.getType());
        assertEquals("en-us", r.getLanguage());
    }   
    
    public void testGetComplexNotAcceptable() throws IOException {
        initiateWebApplication(ComplexVariantResource.class);
        WebResource rp = resource("/", false);
        
        ClientResponse r = rp.accept("application/atom+xml").
                header("Accept-Language", "en-us,en").
                get(ClientResponse.class);
        String vary = r.getMetadata().getFirst("Vary");
        assertNotNull(vary);
        assertTrue(contains(vary, "Accept"));
        assertTrue(contains(vary, "Accept-Language"));
        assertEquals(406, r.getStatus());
        
        r = rp.accept("application/xml").
                header("Accept-Language", "fr").
                get(ClientResponse.class);
        assertTrue(contains(vary, "Accept"));
        assertTrue(contains(vary, "Accept-Language"));
        assertEquals(406, r.getStatus());
    }
    
    private boolean contains(String l, String v) {
        String[] vs = l.split(",");
        for (String s : vs) {
            s = s.trim();
            if (s.equalsIgnoreCase(v))
                return true;
        }
        
        return false;
    }
}