春季控制器測試失敗，儘管URL工作

Question

我想測試一個基本的控制器：

@Autowired 
DAOInterface db; 

@RequestMapping(value = "/postdb", method = RequestMethod.GET) 
@ResponseBody 
public String postdb(
     @RequestParam(value = "id", required = true) String id 
) { 
    db.addEntry(id); 
    return "Added " + id + "."; 
} 

該網址的作品，當我訪問它，它把它添加到數據庫和我得到的字符串輸出作爲響應。

我想爲它創建一個簡單的單元測試：

@Autowired 
MockMvc mockMvc; 

@MockBean 
DAOInterface daoInterface; 

@Test 
public void shouldReturnA200() throws Exception { 
    mockMvc.perform(get("/postdb?id=3")) 
      .andExpect(status().isOk()); 
} 

而是我得到以下

MockHttpServletRequest: 


    HTTP Method = GET 
     Request URI = /postdb 
     Parameters = {id=[3]} 
      Headers = {} 

Handler: 
      Type = org.springframework.web.servlet.resource.ResourceHttpRequestHandler 

Async: 
    Async started = false 
    Async result = null 

Resolved Exception: 
      Type = null 

ModelAndView: 
     View name = null 
      View = null 
      Model = null 

FlashMap: 
     Attributes = null 

MockHttpServletResponse: 
      Status = 404 
    Error message = null 
      Headers = {} 
    Content type = null 
      Body = 
    Forwarded URL = null 
    Redirected URL = null 
      Cookies = [] 

java.lang.AssertionError: Status 
Expected :200 
Actual :404 

不知道爲什麼我它在工作時，我嘗試訪問它，但失敗運行此測試時。我沒有看到任何問題。可能是因爲我沒有使用任何頭文件或正式的響應體/視圖，而只是輸出一個字符串？

EDIT =它的工作原理，當我加 .contextPath("/postdb")) ..不知道如果這是正確的做法，但是當我寫另一個測試不包括任何要求paramters，該測試給出了200，而不是400或404 ....

Answer 1

@Autowired 
DAOInterface db; 

@RequestMapping(value = "/postdb", method = RequestMethod.GET) 
public ResponseEntity<String> postdb(@RequestParam(required = true) String id) { 
    db.addEntry(id); 
    return new ResponseEntity<>("Added " + id + ".", HttpStatus.OK); 
} 

測試：

@Test 
public void shouldReturnA200() throws Exception { 
    mockMvc.perform(get("/postdb?id=3") 
     .contentType(MediaType.APPLICATION_JSON) 
     .accept(MediaType.APPLICATION_JSON)) 
     .andExpect(status().isOk()); 
} 

Answer 2

下面是對我工作的罰款

公共類FirstWebController {

@RequestMapping(value = "/postdb", method = RequestMethod.GET) 
@ResponseBody 
public String postdb(@RequestParam(value = "id", required = true) String id) { 
    System.out.println("idddddddddddd "+id); 
    return "Added " + id + "."; 
} 

}

測試類

@RunWith(SpringJUnit4ClassRunner.class) 
@ContextConfiguration 
public class FirstWebControllerTest { 

    @Configuration 
    static class FirstWebControllerTestConfiguration { 

     @Bean 
     public FirstWebController firstWebController() { 
      return new FirstWebController(); 
     } 
    } 

    @Autowired 
    private FirstWebController firstWebController; 

    private MockMvc mockMvc; 

    @Before 
    public void setup() { 
     mockMvc = standaloneSetup(firstWebController).build(); 
    } 

    @Test 
    public void shouldReturnA200() throws Exception { 
     mockMvc.perform(get("/postdb?id=3")).andExpect(status().isOk()); 
    } 

} 

Answer 3

嘗試增加查詢如下參數：

@Test 
public void shouldReturnA200() throws Exception { 
    mockMvc.perform(get("/postdb).param("id", "3")) 
      .andExpect(status().isOk()); 
}