spring MVC testframework失败，HTTP响应406

Question

我开始使用spring 3.2的新MVC Testframework，但却无法为所有测试用例获取406个HTTP响应代码。

testcase非常简单

public class LocationResouceTest {

    @Autowired
    private WebApplicationContext wac;

    private MockMvc mockMvc;

    @Before
    public void setup() {
        this.mockMvc = MockMvcBuilders.webAppContextSetup(this.wac).build();
    }

    @Test
    public void testGetLocationByPlzPattern() throws Exception {
        // here I need to define the media type as a static var from MediaType
        this.mockMvc.perform(get("/someurl?someparam=somevalue")).andExpect(status().isOk());
    }

}

相应的资源是

@Controller
// here I need to define the media type as string
@RequestMapping(value = "/someurl", produces = "application/json; charset=UTF-8")
public class LocationResource {

    @ResponseBody
    @RequestMapping(method = RequestMethod.GET)
    public ArrayList<DTO> getAllIndex(@RequestParam("someparam") String param) {
        return ... //the list of DTO classes is transformed to json just fine if called with curl
    }

}

我确信这是因为一个错误的媒体类型，但我不知道为什么。

失败测试用例的跟踪：

java.lang.AssertionError：状态应为:<200>但为:<406>在org.springframework.test.util.AssertionErrors.fail(AssertionErrors.AsserteQuals(AssertionErrors.java:60)在org.springframework.test.web.servlet.result.StatusResultMatchers$5。Match(StatusResultMatchers.546)在org.springframework.test.web.servlet.mockMVC$1。在ers.model.frameworkmethod.invokeExplory(Frameworkmethod.Java:42)位于org.junit.internal.runners.statements.invokeMethod.evalue(invokeMethod.Java:20)位于org.junit.internal.runners.statements.runbeFores.evalue(RunbeFores.Java:28)位于org.springframework.test.context.junit4.statements.runbeFores.evalue(RunbeFores.Java:28)位于AVA:229)在org.junit.runners.parentrunner.access$000（parentrunner.Java:50)在org.junit.runners.parentrunner.$2。evaluate（parentrunner.Java:222)在org.springframework.test.context.junit4.statements.runbeforestclasscallbacks.evaluate（runbeforestclasscallbacks.Java:61)在trunner.java:390)位于org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main（RemoteTestRunner.java:197)

Answer 1

这可能是由于在spring测试上下文中没有任何MVC配置造成的。当使用类似：

@RunWith(SpringJUnit4ClassRunner.class)
@WebAppConfiguration
@ContextConfiguration("/test-context.xml")

...那么test-context.xml文件还应包括以下内容：

<mvc:annotation-driven content-negotiation-manager="contentNegotiationManager">
  <mvc:message-converters>
    <bean id="..." class=
"org.springframework.http.converter.json.MappingJackson2HttpMessageConverter"/>
    <bean id="..."
      class="org.springframework.http.converter.StringHttpMessageConverter"/>
    <bean id="..."
      class="org.springframework.http.converter.FormHttpMessageConverter"/>
  </mvc:message-converters>
</mvc:annotation-driven>

<bean id="contentNegotiationManager" 
  class="org.springframework.web.accept.ContentNegotiationManagerFactoryBean">
  <property name="defaultContentType" value="application/json" />
  <property name="mediaTypes">
    <value>
      json=application/json
      xml=application/xml
    </value>
  </property>
</bean>

如果一个控制器不指定任何特殊内容（例如:@requestmappingnoproduct),因此不需要任何内容协商,那么就可以轻松地测试上述问题是否是问题所在：

@RequestMapping(value = "/foo", method = RequestMethod.GET)
@ResponseBody
public String getFoo() {
    return "bar";
}

...与：

@Test
public void getFoo() throws Exception {
    MvcResult result = 
      this.mockMvc.perform(get("/foo").accept(MediaType.TEXT_PLAIN))
        .andExpect(status().isOk())
        .andReturn();
    Assert.assertEquals(result.getResponse().getContentAsString(), "bar"); 
}

Answer 2

如果您有@configuration类，则可以添加@enablewebmvc批注，而不是使用带有 的XML配置。