利用Spring的mock对控制层进行单元测试

java -version
java version "1.6.0_21"
Java(TM) SE Runtime Environment (build 1.6.0_21-b06)
Java HotSpot(TM) Client VM (build 17.0-b16, mixed mode, sharing)

@Controller
@RequestMapping("/case")
public class CaseController {
@RequestMapping(value = "/list", method = RequestMethod.POST)
public String list(HttpServletRequest request, HttpServletResponse response) {
String name = request.getParameter("name");
request.setAttribute("name", name);
List<String> result = new ArrayList<String>();
result.add("result1");
result.add("result2");
result.add("result3");
request.setAttribute("result", result);
return "case/list";
}

@RequestMapping(value = "/listJson", method = RequestMethod.POST)
@ResponseBody
public List<String> listJson(HttpServletRequest request, HttpServletResponse response) {
String name = request.getParameter("name");
List<String> result = new ArrayList<String>();
result.add("result1");
result.add("result2");
result.add("result3");
return result;
}

}

public class CaseControllerTest {
private static final Log logger = LogFactory.getLog(CaseControllerTest.class);
private CaseController controller = null;
private XmlWebApplicationContext ctx;

@Before
public void setUp() throws Exception {
String[] paths = {"spring-servlet-test.xml" };
ctx = new XmlWebApplicationContext();
ctx.setConfigLocations(paths);
ctx.setServletContext(new MockServletContext(""));
ctx.refresh();
controller = (CaseController) ctx.getBean("caseController");
}

@After
public void tearDown() throws Exception {
ctx.close();
}

@Test
public void testListJson() {
logger.info("*****testListJson start**********");
MockHttpServletResponse response = new MockHttpServletResponse();
MockHttpServletRequest request = new MockHttpServletRequest("POST", "");
request.setRequestURI("/case/listJson");
request.addParameter("name", "name");
List<String> result = controller.listJson(request, response);
logger.info("*****result:" + result);
Assert.assertTrue("result is empty", !result.isEmpty());

logger.info("*****testListJson end**********");
}

@Test
public void testList() {
logger.info("*****testList start**********");
MockHttpServletResponse response = new MockHttpServletResponse();
MockHttpServletRequest request = new MockHttpServletRequest("POST", "");
request.setRequestURI("/case/list");
request.addParameter("name", "name");
String returnStr = controller.list(request, response);
List<String> result = (List<String>) request.getAttribute("result");
logger.info("*****result:" + result);
logger.info("*****returnStr:" + returnStr);
logger.info("*****testList end**********");
}
}

1.spring-servlet-test.xml配置文件要对;
2.controller的bean首字母是小写即caseController;
3.可以通过request response直接获取相应的数据，如request.getAttribute("result");