java - 测试 Spring MultipartHttpServletRequest

Question

尝试测试我们用于多个文件上传的 spring Controller 。这是 Controller :

@RequestMapping("/vocabularys")
@Controller
public class VocabularyController {
...

我要测试的 Action :

@RequestMapping(value = "/import", method = {RequestMethod.PUT, RequestMethod.POST})
@ResponseBody
@CacheEvict(value="vocabulary", allEntries=true)
public Object importVocabulary(MultipartHttpServletRequest request, HttpServletResponse response) {
...

我在 webmvc-config.xml 中的解析器:

<bean class="org.springframework.web.multipart.commons.CommonsMultipartResolver" id="multipartResolver"/>

代码工作得很好。我在尝试对此进行单元/集成测试时遇到了问题。

这是我的测试尝试:

public class VocabularyControllerTest extends BaseControllerTest {

    static final private String AdminUsername = "administrator";

    @Test
    public void shouldBeAbleToUploadAFile() throws Exception {
        createTestWorkspace();
        login(AdminUsername, "*");

        MockMultipartFile file = new MockMultipartFile("test_vocab.xml", new FileInputStream("src/test/files/acme_vocabulary.xml"));
        MockMultipartHttpServletRequestBuilder mockMultipartHttpServletRequestBuilder = (MockMultipartHttpServletRequestBuilder) fileUpload("/vocabularys/import").accept(MediaType.ALL).session(httpSession);
        mockMultipartHttpServletRequestBuilder.file(file);
        mockMultipartHttpServletRequestBuilder.content("whatever");

        ResultActions resultActions = mockMvc.perform(mockMultipartHttpServletRequestBuilder);

        resultActions.andExpect(status().isFound());
    }
}

忽略 createWorkspace() 和 login() 之类的东西 - 它们用于通过一些安全过滤器。

BaseControllerTest 的相关部分:

@RunWith(SpringJUnit4ClassRunner.class)
@WebAppConfiguration
@ContextHierarchy({
    @ContextConfiguration(locations = {
        "file:src/test/resources/META-INF/spring/applicationContext.xml",
        "file:src/test/resources/META-INF/spring/applicationContext-security.xml",
        "file:src/main/resources/META-INF/spring/applicationContext-database.xml",
        "file:src/main/resources/META-INF/spring/applicationContext-activiti.xml",
        "file:src/main/resources/META-INF/spring/applicationContext-cache.xml",
        "file:src/main/resources/META-INF/spring/applicationContext-jms.xml",
        "file:src/main/resources/META-INF/spring/applicationContext-mail.xml",
        "file:src/main/resources/META-INF/spring/applicationContext-mongo.xml"}),
    @ContextConfiguration(locations = {
        "file:src/main/webapp/WEB-INF/spring/webmvc-config.xml",
        "file:src/test/webapp/WEB-INF/spring/applicationContext-filters.xml"})
})
@Transactional
public class BaseControllerTest extends BaseTest {

    @Autowired
    WebApplicationContext wac;
    @Autowired
    MockHttpSession httpSession;
    @Autowired
    MockServletContext servletContext;
    @Autowired
    OpenEntityManagerInViewFilter openEntityManagerInViewFilter;
    @Autowired
    HiddenHttpMethodFilter hiddenHttpMethodFilter;
    @Autowired
    CharacterEncodingFilter characterEncodingFilter;
    @Autowired
    SessionFilter sessionFilter;
    @Autowired
    WorkflowAsSessionFilter workflowAsSessionFilter;
    @Autowired
    FilterChainProxy springSecurityFilterChain;
    @Autowired
    RequestFilter requestFilter;
    MockMvc mockMvc;

    protected static final String TestFileDir = "src/test/files/";

    @Before
    public void setUp() throws Exception {
        this.mockMvc = MockMvcBuilders.webAppContextSetup(this.wac)
                .addFilter(openEntityManagerInViewFilter, "/*")
                .addFilter(hiddenHttpMethodFilter, "/*")
                .addFilter(characterEncodingFilter, "/*")
                .addFilter(sessionFilter, "/*")
                .addFilter(workflowAsSessionFilter, "/*")
                .addFilter(springSecurityFilterChain, "/*")
                .addFilter(requestFilter, "/*")
                .build();

        servletContext.setContextPath("/");

        Session session = Session.findBySessionId(httpSession.getId());
        if (session == null) {
            session = new Session();
            session.setJsessionid(httpSession.getId());
            session.persist();
        }
    }
...

问题是，当我尝试对此进行调试时，mockMvc 对象上的perform 操作永远不会触发我的 Controller 方法。我认为通过我们的安全过滤器是一个问题(这就是为什么我拥有所有 login 和东西)但是我测试了词汇 Controller 中的其他操作并且我能够很好地击中它们。

想法？想法？有什么建议吗？

Answer 1

好的，找到问题了。

Spring 的 MockMultipartHttpServletRequestBuilder 最终返回一个 MockHttpMultipartServletRequest 对象。

然而，浏览器所做的是发布一个多部分编码的请求，然后由 XML 中定义的 CommonsMultipartResolver bean 获取并解析该请求。

然而在测试中，由于我们已经发布了一个MockHttpMultipartServletRequest，我们不希望解析器解析它，所以我们要做的就是拥有一个解析器不启动的配置文件中。

然而，我们选择做的是最终构建一个具有多部分编码的 MockHttpServletRequest 并将其放入 Spring 过滤器，以便我们还可以集成测试解析器。

不幸的是，我在 Spring 测试库中没有看到任何支持/帮助程序，它允许您使用 MockHttpServletRequest 和 addPart()到它，或类似的效果=> 手写浏览器仿真功能:(