我尝试使用RestEasy客户端代理更新 Book . Book 实体继承自 Product ， Service 接口（JAX-RS资源）定义方法：
public interface Service<E, I> {
/**
* Updates an existing entity in data base
*
* @param entity
* E
* @return {@link Response}
*/
@PUT
@Consumes(MediaType.APPLICATION_XML)
public Response update(E entity);
具体实现是：
@Override
public Response update(Product entity) {
System.out.println("Update book: "+entity);
throw new WebApplicationException(Status.SERVICE_UNAVAILABLE);
}
我现在尝试使用客户端代理调用更新方法：
private static ServiceProduct serviceProductClient_musterm;
...
@BeforeClass
public static void setUpClass() throws Exception {
serviceProductClient_musterm = ProxyFactory.create(
ServiceProduct.class, HOST, sslExecutor_musterm);
}
@Test
public void updateProductTest_Forbidden_OK() {
Book prod = new Book(100, "name", "description", 1000, "EUR",
"isbn", new Date(), "author");
response = (ClientResponse<?>) serviceProductClient_musterm.update(prod);
assertEquals(Status.FORBIDDEN.getStatusCode(), response.getStatus());
}
测试用例因RuntimeException失败：
java.lang.RuntimeException: java.lang.RuntimeException: could not find writer for content-type application/xml type: java.lang.Object
at org.jboss.resteasy.client.core.ClientInvoker.invoke(ClientInvoker.java:114)
at org.jboss.resteasy.client.core.ClientProxy.invoke(ClientProxy.java:88)
at $Proxy28.update(Unknown Source)
at at.fhj.ase.business.ServiceProductImplTestWithClientProxy.j100_updateProductTest_Forbidden_OK(ServiceProductImplTestWithClientProxy.java:521)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
at org.junit.rules.ExpectedException$ExpectedExceptionStatement.evaluate(ExpectedException.java:168)
at org.junit.rules.RunRules.evaluate(RunRules.java:20)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
Caused by: java.lang.RuntimeException: could not find writer for content-type application/xml type: java.lang.Object
at org.jboss.resteasy.client.ClientRequest.writeRequestBody(ClientRequest.java:469)
at org.jboss.resteasy.client.core.executors.ApacheHttpClient4Executor.loadHttpMethod(ApacheHttpClient4Executor.java:221)
at org.jboss.resteasy.client.core.executors.ApacheHttpClient4Executor.execute(ApacheHttpClient4Executor.java:107)
at org.jboss.resteasy.core.interception.ClientExecutionContextImpl.proceed(ClientExecutionContextImpl.java:39)
at org.jboss.resteasy.plugins.interceptors.encoding.AcceptEncodingGZIPInterceptor.execute(AcceptEncodingGZIPInterceptor.java:40)
at org.jboss.resteasy.core.interception.ClientExecutionContextImpl.proceed(ClientExecutionContextImpl.java:45)
at org.jboss.resteasy.client.ClientRequest.execute(ClientRequest.java:443)
at org.jboss.resteasy.client.ClientRequest.httpMethod(ClientRequest.java:674)
at org.jboss.resteasy.client.core.ClientInvoker.invoke(ClientInvoker.java:110)
... 31 more
java.lang.NullPointerException
at at.fhj.ase.business.ServiceProductImplTestWithClientProxy.tearDown(ServiceProductImplTestWithClientProxy.java:78)
at sun.reflect.GeneratedMethodAccessor14.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:33)
at org.junit.rules.ExpectedException$ExpectedExceptionStatement.evaluate(ExpectedException.java:168)
at org.junit.rules.RunRules.evaluate(RunRules.java:20)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
我知道java泛型的类型擦除删除了具体的类型信息 . 这就是为什么Jaxb声称找不到 Object 类型的作家的原因 . 对于服务器响应，存在 GenericEntiy ：
GenericEntity<List<Category>> entity = new GenericEntity<List<Category>>(
categories) {
};
但是客户端请求的解决方案是什么？
[EDIT]
通过使用RestEasy客户端框架，更新方法可以正常工作：
@Test
public void a100_insertRecensionTest() throws Exception {
Book prod = new Book(100, "name", "description", 1000, "EUR",
"isbn", new Date(), "author");
ClientRequest request = new ClientRequest(BASE_URL, sslExecutor_musterm);
request.body(MediaType.APPLICATION_XML, prod);
ClientResponse<?> response = request.put();
assertEquals(Status.FORBIDDEN.getStatusCode(), response.getStatus());
response.releaseConnection();
request.clear();
}
update方法的输出与预期的一样：
18:51:19,636 INFO [stdout] (http--0.0.0.0-443-2) Update book: Id: 100 Name: name Description: description Price: 1000 Currency: EUR ISBN: isbn PublicationDate: Tue Jul 02 18:51:18 CEST 2013 Author: author
如何使用RestEasy客户端代理实现此目的？