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[英]How to create a synchronize block using a @PathVariable in a Spring MVC controller?
[英]How to unit test a Spring MVC controller using @PathVariable?
我有一個類似於這個的簡單注釋控制器:
@Controller
public class MyController {
@RequestMapping("/{id}.html")
public String doSomething(@PathVariable String id, Model model) {
// do something
return "view";
}
}
我想用這樣的單元測試來測試它:
public class MyControllerTest {
@Test
public void test() {
MockHttpServletRequest request = new MockHttpServletRequest();
request.setRequestURI("/test.html");
new AnnotationMethodHandlerAdapter()
.handle(request, new MockHttpServletResponse(), new MyController());
// assert something
}
}
問題是AnnotationMethodHandlerAdapter.handler()方法拋出異常:
java.lang.IllegalStateException: Could not find @PathVariable [id] in @RequestMapping
at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter$ServletHandlerMethodInvoker.resolvePathVariable(AnnotationMethodHandlerAdapter.java:642)
at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.resolvePathVariable(HandlerMethodInvoker.java:514)
at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.resolveHandlerArguments(HandlerMethodInvoker.java:262)
at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:146)
在基於Spring參考手冊中的術語進行集成測試之后,我會打電話給你。 做一些像這樣的事情:
import static org.springframework.test.web.ModelAndViewAssert.*;
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration({/* include live config here
e.g. "file:web/WEB-INF/application-context.xml",
"file:web/WEB-INF/dispatcher-servlet.xml" */})
public class MyControllerIntegrationTest {
@Inject
private ApplicationContext applicationContext;
private MockHttpServletRequest request;
private MockHttpServletResponse response;
private HandlerAdapter handlerAdapter;
private MyController controller;
@Before
public void setUp() {
request = new MockHttpServletRequest();
response = new MockHttpServletResponse();
handlerAdapter = applicationContext.getBean(HandlerAdapter.class);
// I could get the controller from the context here
controller = new MyController();
}
@Test
public void testDoSomething() throws Exception {
request.setRequestURI("/test.html");
final ModelAndView mav = handlerAdapter.handle(request, response,
controller);
assertViewName(mav, "view");
// assert something
}
}
有關更多信息,我寫了一篇關於集成測試Spring MVC注釋的博客文章 。
從Spring 3.2開始,有一種正確的方法可以以優雅和簡單的方式對其進行測試。 你將能夠做到這樣的事情:
@RunWith(SpringJUnit4ClassRunner.class)
@WebAppConfiguration
@ContextConfiguration("servlet-context.xml")
public class SampleTests {
@Autowired
private WebApplicationContext wac;
private MockMvc mockMvc;
@Before
public void setup() {
this.mockMvc = webAppContextSetup(this.wac).build();
}
@Test
public void getFoo() throws Exception {
this.mockMvc.perform(get("/foo").accept("application/json"))
.andExpect(status().isOk())
.andExpect(content().mimeType("application/json"))
.andExpect(jsonPath("$.name").value("Lee"));
}
}
有關詳細信息,請查看http://blog.springsource.org/2012/11/12/spring-framework-3-2-rc1-spring-mvc-test-framework/
一個有前途的測試Spring MVC的框架https://github.com/SpringSource/spring-test-mvc
異常消息是指“feed”變量,它不在您的示例代碼中,它可能是由您未向我們展示的內容引起的。
此外,您的測試是測試Spring 和您自己的代碼。 這真的是你想要做的嗎?
最好假設Spring工作(它確實如此),並且只測試你自己的類,即直接調用MyController.doSomething()
。 這是注釋方法的一個好處 - 您不需要使用模擬請求和響應,您只需使用域POJO。
在這里,我建議使用spring-test而不是spring-test-mvc合並Emil和scarba05的答案。 如果您使用的是Spring 3.2.x或更高版本,請跳過此答案並參考spring-test-mvc示例
@Controller
public class MyControllerWithParameter {
@RequestMapping("/testUrl/{pathVar}/some.html")
public String passOnePathVar(@PathVariable String pathVar, ModelMap model){
model.addAttribute("SomeModelAttribute",pathVar);
return "viewName";
}
}
import static org.springframework.test.web.ModelAndViewAssert.assertViewName;
import java.util.HashMap;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.ApplicationContext;
import org.springframework.mock.web.MockHttpServletRequest;
import org.springframework.mock.web.MockHttpServletResponse;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import org.springframework.test.web.ModelAndViewAssert;
import org.springframework.web.servlet.HandlerAdapter;
import org.springframework.web.servlet.HandlerMapping;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter;
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations =
{"file:src\\main\\webapp\\WEB-INF\\spring\\services\\servlet-context.xml"
})
public class MyControllerTest {
private MockHttpServletRequest request;
private MockHttpServletResponse response;
private HandlerAdapter handlerAdapter;
@Before
public void setUp() throws Exception {
request = new MockHttpServletRequest();
response = new MockHttpServletResponse();
this.handlerAdapter = applicationContext.getBean(AnnotationMethodHandlerAdapter.class);
}
// Container beans
private MyControllerWithParameter myController;
private ApplicationContext applicationContext;
public ApplicationContext getApplicationContext() {
return applicationContext;
}
@Autowired
public void setApplicationContext(ApplicationContext applicationContext) {
this.applicationContext = applicationContext;
}
public MyControllerWithParameter getMyController() {
return myController;
}
@Autowired
public void setMyController(MyControllerWithParameter myController) {
this.myController = myController;
}
@Test
public void test() throws Exception {
request.setRequestURI("/testUrl/Irrelavant_Value/some.html");
HashMap<String, String> pathvars = new HashMap<String, String>();
// Populate the pathVariable-value pair in a local map
pathvars.put("pathVar", "Path_Var_Value");
// Assign the local map to the request attribute concerned with the handler mapping
request.setAttribute(HandlerMapping.URI_TEMPLATE_VARIABLES_ATTRIBUTE, pathvars);
final ModelAndView modelAndView = this.handlerAdapter.handle(request, response, myController);
ModelAndViewAssert.assertAndReturnModelAttributeOfType(modelAndView, "SomeModelAttribute", String.class);
ModelAndViewAssert.assertModelAttributeValue(modelAndView, "SomeModelAttribute", "Path_Var_Value");
ModelAndViewAssert.assertViewName(modelAndView, "viewName");
}
}
我發現您可以手動將PathVariable映射插入到請求對象中。 這顯然是不理想的,但似乎有效。 在您的示例中,類似於:
@Test
public void test() {
MockHttpServletRequest request = new MockHttpServletRequest();
request.setRequestURI("/test.html");
HashMap<String, String> pathvars = new HashMap<String, String>();
pathvars.put("id", "test");
request.setAttribute(HandlerMapping.URI_TEMPLATE_VARIABLES_ATTRIBUTE, pathvars);
new AnnotationMethodHandlerAdapter().handle(request, new MockHttpServletResponse(), new MyController());
// assert something
}
我肯定有興趣找到一個更好的選擇。
我不確定我的原始答案會對@PathVariable有所幫助。 我剛試過測試一個@PathVariable,我得到以下異常:
org.springframework.web.bind.annotation.support.HandlerMethodInvocationException:無法調用處理程序方法[public org.springframework.web.servlet.ModelAndView test.MyClass.myMethod(test.SomeType)]; 嵌套異常是java.lang.IllegalStateException:在@RequestMapping中找不到@PathVariable [parameterName]
原因是請求中的路徑變量由攔截器解析。 以下方法適用於我:
import static org.springframework.test.web.ModelAndViewAssert.*;
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration({"file:web/WEB-INF/application-context.xml",
"file:web/WEB-INF/dispatcher-servlet.xml"})
public class MyControllerIntegrationTest {
@Inject
private ApplicationContext applicationContext;
private MockHttpServletRequest request;
private MockHttpServletResponse response;
private HandlerAdapter handlerAdapter;
@Before
public void setUp() throws Exception {
this.request = new MockHttpServletRequest();
this.response = new MockHttpServletResponse();
this.handlerAdapter = applicationContext.getBean(HandlerAdapter.class);
}
ModelAndView handle(HttpServletRequest request, HttpServletResponse response)
throws Exception {
final HandlerMapping handlerMapping = applicationContext.getBean(HandlerMapping.class);
final HandlerExecutionChain handler = handlerMapping.getHandler(request);
assertNotNull("No handler found for request, check you request mapping", handler);
final Object controller = handler.getHandler();
// if you want to override any injected attributes do it here
final HandlerInterceptor[] interceptors =
handlerMapping.getHandler(request).getInterceptors();
for (HandlerInterceptor interceptor : interceptors) {
final boolean carryOn = interceptor.preHandle(request, response, controller);
if (!carryOn) {
return null;
}
}
final ModelAndView mav = handlerAdapter.handle(request, response, controller);
return mav;
}
@Test
public void testDoSomething() throws Exception {
request.setRequestURI("/test.html");
request.setMethod("GET");
final ModelAndView mav = handle(request, response);
assertViewName(mav, "view");
// assert something else
}
我添加了一篇關於集成測試spring mvc annotations的新博文
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