java.lang.AssertionError：junit Spring MVC Controller时未设置内容类型？
我正在使用JUnit来测试我的Spring MVC控制器。 下面是我的方法，它返回一个index.jsp页面并在屏幕上显示Hello World –
@RequestMapping(value = "index", method = RequestMethod.GET) public HashMap handleRequest() { HashMap model = new HashMap(); String name = "Hello World"; model.put("greeting", name); return model; }
以下是我对上述方法的JUnit测试：
public class ControllerTest { private MockMvc mockMvc; @Before public void setup() throws Exception { InternalResourceViewResolver viewResolver = new InternalResourceViewResolver(); viewResolver.setPrefix("/WEB-INF/views/"); viewResolver.setSuffix(".jsp"); this.mockMvc = standaloneSetup(new Controller()).setViewResolvers(viewResolver).build(); } @Test public void test01_Index() throws Exception { mockMvc.perform(get("/index")).andExpect(status().isOk()).andExpect(content().contentType("application/json")) .andExpect(jsonPath("$.greeting").value("Hello World")); } }
当我调试它时，junit上面运行正常但是当我运行junit作为junit run as junit ，它给了我这个错误 –
MockMvc : Circular view path [view]: would dispatch back to the current handler URL [/view] again
所以为了解决这个问题，我遵循了本教程 ，之后我得到了这个例外 –
java.lang.AssertionError: Content type not set at org.springframework.test.util.AssertionErrors.fail(AssertionErrors.java:39) at org.springframework.test.util.AssertionErrors.assertTrue(AssertionErrors.java:72) at org.springframework.test.web.servlet.result.ContentResultMatchers$1.match(ContentResultMatchers.java:75) at org.springframework.test.web.servlet.MockMvc$1.andExpect(MockMvc.java:141) at com.ebay.personalization.bullseye.zookeeper.test.ZookeeperControllerTest.test01_Index(ZookeeperControllerTest.java:32) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:76) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:602) at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44) at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15) at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41) at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20) at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:76) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50) at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193) at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52) at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191) at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42) at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184) at org.junit.runners.ParentRunner.run(ParentRunner.java:236) at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50) at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
我在这做错了什么？ 在.jsp页面上显示Hello World ..
我在这里跟进我之前的问题
我看到了请求映射方法的几个问题：
理想情况下，您应该在方法上使用@ResponseBody注释，以指示返回的内容将被流式传输：
@RequestMapping(value = "index", method = RequestMethod.GET) @ResponseBody public HashMap handleRequest() { HashMap model = new HashMap(); String name = "Hello World"; model.put("greeting", name); return model; }
完成此操作后，您的测试可能如下所示：
mockMvc.perform(get("/index").contentType(MediaType.APPLICATION_JSON)).andExpect(status().isOk()).andExpect(content().contentTypeCompatibleWith("application/json")) .andExpect(jsonPath("$.greeting").value("Hello World"));
在你的情况下，正在发生的事情是Spring试图找出视图名称并将视图名称作为index ，这也是控制器路径，因此您看到的是圆形视图路径错误。
您还应该检查您的请求映射：
get（“/ …”）匹配@RequestMapping吗？
如果从未调用handleRequest，您将得到相同的错误Content type not set 。