jaxbcontextresolvertest.java

resetful样式的ws样例,一种面向资源的webservices服务

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package com.sun.jersey.impl.inject;

import com.sun.jersey.impl.AbstractResourceTester;
import java.io.IOException;
import javax.ws.rs.GET;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.core.Context;
import javax.ws.rs.ext.ContextResolver;
import javax.ws.rs.ext.Provider;
import javax.xml.bind.JAXBContext;

/**
 *
 * @author [e-mail]
 */
public class JAXBContextResolverTest extends AbstractResourceTester {
        
    public JAXBContextResolverTest(String testName) throws Exception {
        super(testName);
    }

    @Provider
    public static class MyJAXBContextResolver implements ContextResolver<JAXBContext> {
        JAXBContext context;
        
        public MyJAXBContextResolver() throws Exception {
            context = JAXBContext.newInstance(MyBean.class);
        }
        
        public JAXBContext getContext(Class<?> objectType) {
            return (objectType == MyBean.class) ? context : null;
        }
    }
    
    @Path("/")
    public static class ContextResource {
        @Context ContextResolver<JAXBContext> cr;
        
        @GET
        public MyBean get() {
            if (cr != null) {
                JAXBContext c = cr.getContext(MyBean.class);
                if (c != null)
                    return new MyBean("GET-WITH-CONTEXT");
                else
                    return new MyBean("GET-WITHOUT-CONTEXT");
            }
            return new MyBean("GET-WITHOUT-CONTEXT");
        }        
        
        @POST
        public MyBean post(MyBean b) {
            if (cr != null) {
                JAXBContext c = cr.getContext(MyBean.class);
                if (c != null)
                    b.value = "POST-WITH-CONTEXT";
                else
                    b.value = "POST-WITHOUT-CONTEXT";                
            } else {
                b.value = "POST-WITHOUT-CONTEXT";                
            }
            return b;
        }        
    }
    
    public void testWithContextResolver() throws IOException {
        initiateWebApplication(ContextResource.class, MyJAXBContextResolver.class);
        
        // TODO need to determine if the JAXBContext returned from 
        // MyJAXBContextResolver is used by JAXB message body readers/writers
        
        MyBean b = resource("/").get(MyBean.class);
        assertEquals("GET-WITH-CONTEXT", b.value);
        
        b = new MyBean("POST");
        b = resource("/").post(MyBean.class, b);
        assertEquals("POST-WITH-CONTEXT", b.value);
    }
    
    public void testWithoutContextResolver() throws IOException {
        initiateWebApplication(ContextResource.class);
        
        MyBean b = resource("/").get(MyBean.class);
        assertEquals("GET-WITHOUT-CONTEXT", b.value);
        
        b = new MyBean("POST");
        b = resource("/").post(MyBean.class, b);
        assertEquals("POST-WITHOUT-CONTEXT", b.value);
    }
}