Java tutorial
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See the License for the * specific language governing permissions and limitations * under the License. */ package org.apache.cxf.systest.jaxrs; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import java.lang.annotation.Annotation; import java.lang.reflect.Type; import java.util.ArrayList; import java.util.Collections; import java.util.HashMap; import java.util.List; import java.util.Map; import javax.ws.rs.core.MediaType; import javax.ws.rs.core.MultivaluedMap; import javax.ws.rs.core.Response; import javax.xml.bind.JAXBContext; import javax.xml.bind.Unmarshaller; import javax.xml.stream.XMLStreamWriter; import org.apache.commons.httpclient.HttpClient; import org.apache.commons.httpclient.methods.GetMethod; import org.apache.cxf.jaxrs.JAXRSServerFactoryBean; import org.apache.cxf.jaxrs.client.WebClient; import org.apache.cxf.jaxrs.lifecycle.SingletonResourceProvider; import org.apache.cxf.jaxrs.model.AbstractResourceInfo; import org.apache.cxf.jaxrs.provider.JAXBElementProvider; import org.apache.cxf.staxutils.CachingXmlEventWriter; import org.apache.cxf.testutil.common.AbstractBusClientServerTestBase; import org.apache.cxf.testutil.common.AbstractBusTestServerBase; import org.junit.BeforeClass; import org.junit.Ignore; import org.junit.Test; public class JAXRSClientServerStreamingTest extends AbstractBusClientServerTestBase { public static final String PORT = allocatePort(Server.class); @Ignore public static class Server extends AbstractBusTestServerBase { protected void run() { JAXRSServerFactoryBean sf = new JAXRSServerFactoryBean(); sf.setResourceClasses(BookStore.class); sf.setResourceProvider(BookStore.class, new SingletonResourceProvider(new BookStore())); JAXBElementProvider<?> p1 = new JAXBElementProvider<Object>(); p1.setEnableBuffering(true); p1.setEnableStreaming(true); JAXBElementProvider<?> p2 = new CustomJaxbProvider(); p2.setProduceMediaTypes(Collections.singletonList("text/xml")); List<Object> providers = new ArrayList<>(); providers.add(p1); providers.add(p2); sf.setProviders(providers); sf.setAddress("http://localhost:" + PORT + "/"); Map<String, Object> properties = new HashMap<>(); properties.put("org.apache.cxf.serviceloader-context", "true"); sf.setProperties(properties); sf.create(); } public static void main(String[] args) { try { Server s = new Server(); s.start(); } catch (Exception ex) { ex.printStackTrace(); System.exit(-1); } finally { System.out.println("done!"); } } } @BeforeClass public static void startServers() throws Exception { AbstractResourceInfo.clearAllMaps(); //keep out of process due to stack traces testing failures assertTrue("server did not launch correctly", launchServer(Server.class)); createStaticBus(); } @Test public void testGetBook123() throws Exception { getAndCompare("http://localhost:" + PORT + "/bookstore/books/123", "application/xml", 200); } @Test public void testGetBook123Fail() throws Exception { WebClient wc = WebClient.create("http://localhost:" + PORT + "/bookstore/books/text/xml/123"); wc.accept("text/xml"); wc.header("fail-write", "yes"); Response r = wc.get(); assertEquals(500, r.getStatus()); } @Test public void testGetBookUsingStaxWriter() throws Exception { getAndCompare("http://localhost:" + PORT + "/bookstore/books/text/xml/123", "text/xml", 200); } private void getAndCompare(String address, String acceptType, int expectedStatus) throws Exception { GetMethod get = new GetMethod(address); get.setRequestHeader("Accept", acceptType); HttpClient httpClient = new HttpClient(); try { int result = httpClient.executeMethod(get); assertEquals(expectedStatus, result); Book book = readBook(get.getResponseBodyAsStream()); assertEquals(123, book.getId()); assertEquals("CXF in Action", book.getName()); } finally { get.releaseConnection(); } } private Book readBook(InputStream is) throws Exception { JAXBContext c = JAXBContext.newInstance(new Class[] { Book.class }); Unmarshaller u = c.createUnmarshaller(); return (Book) u.unmarshal(is); } @Ignore public static class CustomJaxbProvider extends JAXBElementProvider<Object> { @Override protected XMLStreamWriter getStreamWriter(Object obj, OutputStream os, MediaType mt) { if (mt.equals(MediaType.TEXT_XML_TYPE)) { return new CachingXmlEventWriter(); } else { throw new RuntimeException(); } } @Override public void writeTo(Object obj, Class<?> cls, Type genericType, Annotation[] anns, MediaType m, MultivaluedMap<String, Object> headers, OutputStream os) throws IOException { List<String> failHeaders = getContext().getHttpHeaders().getRequestHeader("fail-write"); if (failHeaders != null && !failHeaders.isEmpty()) { os.write("fail".getBytes()); throw new IOException(); } else { super.writeTo(obj, cls, genericType, anns, m, headers, os); } } } }