Spring:使用 ResponseEntity<Void> 返回空 HTTP 响应不起作用
我们正在用Spring(4.1.1.)实现一个REST API。对于某些 HTTP 请求,我们希望返回一个没有正文的 head 作为响应。但是,使用似乎不起作用。当使用测试调用时,将返回 406(不可接受)。不带参数值 () 的使用工作正常。ResponseEntity<Void>
MockMvc
ResponseEntity<String>
new ResponseEntity<String>( HttpStatus.NOT_FOUND )
方法:
@RequestMapping( method = RequestMethod.HEAD, value = Constants.KEY )
public ResponseEntity<Void> taxonomyPackageExists( @PathVariable final String key ) {
LOG.debug( "taxonomyPackageExists queried with key: {0}", key ); //$NON-NLS-1$
final TaxonomyKey taxonomyKey = TaxonomyKey.fromString( key );
LOG.debug( "Taxonomy key created: {0}", taxonomyKey ); //$NON-NLS-1$
if ( this.xbrlInstanceValidator.taxonomyPackageExists( taxonomyKey ) ) {
LOG.debug( "Taxonomy package with key: {0} exists.", taxonomyKey ); //$NON-NLS-1$
return new ResponseEntity<Void>( HttpStatus.OK );
} else {
LOG.debug( "Taxonomy package with key: {0} does NOT exist.", taxonomyKey ); //$NON-NLS-1$
return new ResponseEntity<Void>( HttpStatus.NOT_FOUND );
}
}
测试用例(TestNG):
public class TaxonomyQueryControllerTest {
private XbrlInstanceValidator xbrlInstanceValidatorMock;
private TaxonomyQueryController underTest;
private MockMvc mockMvc;
@BeforeMethod
public void setUp() {
this.xbrlInstanceValidatorMock = createMock( XbrlInstanceValidator.class );
this.underTest = new TaxonomyQueryController( this.xbrlInstanceValidatorMock );
this.mockMvc = MockMvcBuilders.standaloneSetup( this.underTest ).build();
}
@Test
public void taxonomyPackageDoesNotExist() throws Exception {
// record
expect( this.xbrlInstanceValidatorMock.taxonomyPackageExists( anyObject( TaxonomyKey.class ) ) ).andStubReturn(
false );
// replay
replay( this.xbrlInstanceValidatorMock );
// do the test
final String taxonomyKey = RestDataFixture.taxonomyKeyString;
this.mockMvc.perform( head( "/taxonomypackages/{key}", taxonomyKey ).accept( //$NON-NLS-1$
MediaType.APPLICATION_XML ) ).andExpect( status().isNotFound() );
}
}
使用此堆栈跟踪失败:
FAILED: taxonomyPackageDoesNotExist
java.lang.AssertionError: Status expected:<404> but was:<406>
at org.springframework.test.util.AssertionErrors.fail(AssertionErrors.java:60)
at org.springframework.test.util.AssertionErrors.assertEquals(AssertionErrors.java:89)
at org.springframework.test.web.servlet.result.StatusResultMatchers$10.match(StatusResultMatchers.java:652)
at org.springframework.test.web.servlet.MockMvc$1.andExpect(MockMvc.java:153)
at de.zeb.control.application.xbrlstandalonevalidator.restservice.TaxonomyQueryControllerTest.taxonomyPackageDoesNotExist(TaxonomyQueryControllerTest.java:54)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:84)
at org.testng.internal.Invoker.invokeMethod(Invoker.java:714)
at org.testng.internal.Invoker.invokeTestMethod(Invoker.java:901)
at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:1231)
at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:127)
at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:111)
at org.testng.TestRunner.privateRun(TestRunner.java:767)
at org.testng.TestRunner.run(TestRunner.java:617)
at org.testng.SuiteRunner.runTest(SuiteRunner.java:334)
at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:329)
at org.testng.SuiteRunner.privateRun(SuiteRunner.java:291)
at org.testng.SuiteRunner.run(SuiteRunner.java:240)
at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52)
at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:86)
at org.testng.TestNG.runSuitesSequentially(TestNG.java:1224)
at org.testng.TestNG.runSuitesLocally(TestNG.java:1149)
at org.testng.TestNG.run(TestNG.java:1057)
at org.testng.remote.RemoteTestNG.run(RemoteTestNG.java:111)
at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:204)
at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:175)