1

我正在我的 spring 控制器中测试一个方法，当它到达 sendRequest 方法时，我得到了一个 url 的空指针。我的测试方法如下：

@Test
public void testShowForm() {
    Map<String, Object> params = new HashMap<String, Object>();
    params.put("email", "testemail");
    params.put("accessCode", KeyGenerator.getKey64());
    String result = sendRequest("/userInfo.htm", GET, userController, params);
    assertNotNull(result);
}

我的助手类：

public class JUnitControllerHelper extends JUnitHelper {

@Autowired
protected JUnitDataHelper jUnitDataHelper;

@Autowired
protected JUnitServiceHelper jUnitServiceHelper;

@Autowired
protected ApplicationContext applicationContext;

protected final String GET = "GET";
protected final String POST = "POST";

protected MockHttpServletRequest request;
protected MockHttpServletResponse response;
protected HandlerAdapter handlerAdapter;

@Before
public void setUp() {
   request = new MockHttpServletRequest();
   response = new MockHttpServletResponse();
   handlerAdapter = applicationContext.getBean(HandlerAdapter.class);
}


public String sendRequest(String url, String method, Object controller, Map<String, Object> params) throws Exception {
    request.setRequestURI(url);
    request.setParameters(params);
    request.setMethod(method);
    request.setContentType("application/json");
    handlerAdapter.handle(request, response, controller);
    return response.getContentAsString();
}

public static void assertSubmitSuccess(String json) {
    if(!json.contains("\"success\":true"))
        fail("Submit returned unexpected errors");
}

public static void assertSubmitError(String field, String json) {
    if(!json.contains("\"success\":false") || !json.contains("\"errors\"") || !json.contains("\""+field+"\"")) 
        fail("Submit did not return expected errors");
}
}

请求引用变量属于 MockHttpServletRequest 类，在我的控制器中它标有@RequestMapping(method = RequestMethod.GET, value = "/userInfo")，任何帮助将不胜感激。

应用程序上下文.xml：

<import resource="classPath:springConfig/dao.xml"/>
<import resource="classPath:springConfig/database.xml"/>
<import resource="classPath:springConfig/service.xml"/>
<import resource="classPath:springConfig/validator.xml"/>
<import resource="data.xml"/>
<import resource="controller.xml"/>
<import resource="junit.xml"/>
</beans>`

我的所有测试都在一个测试目录中，在我的 controller.xml 中我有：

<bean id="userInfoController" class="com.ck.web.controller.UserController"/>
<bean class="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping"/>
<bean id="jacksonMessageConverter" class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter"/></bean>
  <bean class="org.springframework.web.servlet.mvc.AnnotationMethodHandlerAdapter"/></bean>`
4

2 回答 2

0

如果一旦执行流程到达该sendRequest方法，它就会抛出 a NullPointerException，request或者handlerAdapter对象为 null 因为是您正在访问的唯一对象，并且可能会抛出NullPointerException.

如果要检查，请尝试记录 2 对象状态：

public String sendRequest(String url, String method, Object controller, Map<String, Object> params) throws Exception {

    // log the object state here or give it a print in console (as you prefer)

    request.setRequestURI(url);
    request.setParameters(params);
    request.setMethod(method);
    request.setContentType("application/json");
    handlerAdapter.handle(request, response, controller);
    return response.getContentAsString();
}

您可以发布完整的课程以便您提供更详细的帮助吗？

于 2013-08-23T15:09:39.260 回答
0

看来您是通过 call 直接调用控制器方法sendRequest("/userInfo.htm", GET, userController, params);。这意味着调用不会通过 Spring 上下文执行，因此 Spring 没有做任何事情来填充该request字段。

考虑看这篇文章：how-to-unit-test-a-spring-mvc-controller-using-pathvariable

于 2013-08-23T15:30:56.097 回答