SpringMVC Control（控制器）对注解@RequestBody 单元测试示例（ Could not read JSON）解决

 

org.springframework.http.converter.HttpMessageNotReadableException: Could not read JSON: No content to map to Object due to end of input; 异常处理后的结果示例如下：

 

对于在SprngMVC 控制器层使用 @RequestBody 注解作为参数使用 MockHttpServletRequest 进行测试示例：

//运行类

@RunWith(SpringJUnit4ClassRunner.class)

//bean的配置文件路径

@ContextConfiguration(locations = {"/com/wangmeng/dpap/module/springmvctest/spring.xml", "/com/wangmeng/dpap/module/springmvctest/springmvc-servlet.xml"})

public class EmpControllerTest {

 

//注入 controll 控制器

@Autowired

   private EmpController empController;

 

@Autowired  

private RequestMappingHandlerAdapter handlerAdapter;

//定义request 对象

MockHttpServletRequest request = new MockHttpServletRequest();

//定义 response 对象

MockHttpServletResponse response = new MockHttpServletResponse(); 

 

  @Test

public void insertEmpTest(){

 

String emp="{\"name\":\"emptest\",\"age\":10}";

//请求路径

request.setRequestURI("springmvctest/empAdd");

//请求方式

       request.setMethod(HttpMethod.POST.name()); 

       //请求方式为JSON (如果在Control 层中参数接收方式@RequestBody 必须要设置请求方式为 JSON)

       request.setContentType("application/json;charset=UTF-8");

       //设置请求数据 对于注解使用的 @RequestBody 使用setContent() 传递参数,对于使用的注解是@RequestParam就可以使用addParameter() 传递参数

       request.setContent(emp.getBytes()); //在springMVC 通过 MappingJackson2HttpMessageConverter 将json 转化为 JavaBean 对象设置的请求信息，如果不使用该方法就会 抛出 org.springframework.http.converter.HttpMessageNotReadableException: Could not read JSON: No content to map to Object due to end of input;

 

try {

handlerAdapter.handle(request, response, new HandlerMethod(empController,"insertEmp",EmpVo.class));

//获取@ResponseBody 的返回信息

String bodyStr = response.getContentAsString();

Assert.assertNotNull(bodyStr);

} catch (NoSuchMethodException e) {

// TODO Auto-generated catch block

e.printStackTrace();

} catch (Exception e) {

// TODO Auto-generated catch block

e.printStackTrace();

}  

        

     

 

}

 

//@Test

public void deleteEmpTest(){

request.addParameter("id","1000");

request.setRequestURI("springmvctest/deleteEmp");  

       request.setMethod(HttpMethod.POST.name()); 

       request.setContentType("application/json;charset=UTF-8");

// 在控制层如果返回的是ModelAndView  即可使用该对象

       ModelAndView view = new ModelAndView();

try {

view = handlerAdapter.handle(request, response, new HandlerMethod(empController,"deleteEmp",String.class));

  Assert.assertEquals("springmvctest/index", view.getViewName()); 

} catch (NoSuchMethodException e) {

// TODO Auto-generated catch block

e.printStackTrace();

} catch (Exception e) {

// TODO Auto-generated catch block

e.printStackTrace();

}  

 

       Assert.assertNull(view);  

}

 

// @Test

public void empListTest(){

   request.addParameter("seachKey","");

   request.addParameter("start","0");

   request.addParameter("limit","20");

request.setRequestURI("springmvctest/empList");  

       request.setMethod(HttpMethod.POST.name()); 

       request.setContentType("application/json;charset=UTF-8");

       ModelAndView view = new ModelAndView();

try {

view = handlerAdapter.handle(request, response, new HandlerMethod(empController,"empList",String.class,int.class,int.class));

Assert.assertNotNull(view);

} catch (NoSuchMethodException e) {

// TODO Auto-generated catch block

e.printStackTrace();

} catch (Exception e) {

// TODO Auto-generated catch block

e.printStackTrace();

}  

 

       

}

 

}