No mapping found for HTTP request with URI [/api/transactions] in DispatcherServlet with name '' - spring-mvc

Question

I thought this is a standard configuration. But I get a 404 back. Where else should I configure Spring Boot ?
#RestController
#RequestMapping("/api")
public class TransactionStatisticsController {
public static final Logger logger = LoggerFactory.getLogger(TransactionStatisticsController.class);
#RequestMapping(value = "/transactions",
method = RequestMethod.POST)
public ResponseEntity sendTransaction(#RequestBody Transaction request) {
logger.info( request.toString());
return new ResponseEntity(HttpStatus.OK);
}
}
This is my test.
#JsonTest
#SpringBootTest(classes = Application.class)
#AutoConfigureMockMvc
#RunWith(SpringRunner.class)
public class TransactionStatisticsRestTest {
#Autowired
private MockMvc mockMvc;
#Autowired
private JacksonTester<Transaction> json;
private static Transaction transaction;
#BeforeClass
public static void createTransaction(){
BigDecimal amount = new BigDecimal(12.3343);
transaction = new Transaction(amount.toString(),
"2010-10-02T12:23:23Z");
}
#Test
public void getTransactionStatus() throws Exception {
final String transactionJson = json.write(transaction).getJson();
mockMvc
.perform(post("/api/transactions")
.content(transactionJson)
.contentType(APPLICATION_JSON_UTF8))
.andExpect(status().isOk());
}
public static byte[] convertObjectToJsonBytes(Object object) throws IOException {
ObjectMapper mapper = new ObjectMapper();
return mapper.writeValueAsBytes(transaction);
}
}
Request being made is
MockHttpServletRequest:
HTTP Method = POST
Request URI = /api/transactions
Parameters = {}
Headers = {Content-Type=[application/json;charset=UTF-8]}
Body = {"amount":"12.3343000000000007077005648170597851276397705078125","timestamp":"2010-10-02T12:23:23Z[UTC]"}
Session Attrs = {}
Handler:
Type = null
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 = []
Update : I added a component scan pointing to a base package. I don't see that error now. Please see the comments where there is an answer.

Answer 1

As in the comment section ,there was only requirement was to bind a component scan base package location .
#Component scan -->Configures component scanning directives for use with #Configuration classes. Provides support parallel with Spring XML's element.
Either basePackageClasses() or basePackages() (or its alias value()) may be specified to define specific packages to scan. If specific packages are not defined, scanning will occur from the package of the class that declares this annotation.

Answer 2

Please share your project folder architecture. It might be possible that your controller package is out of the main class package. That's why it is showing 404.
This code :
#RestController
#RequestMapping("/api")
public class TransactionStatisticsController {
public static final Logger logger = LoggerFactory.getLogger(TransactionStatisticsController.class);
#RequestMapping(value = "/transactions",
method = RequestMethod.POST)
public ResponseEntity sendTransaction(#RequestBody Transaction request) {
logger.info( request.toString());
return new ResponseEntity(HttpStatus.OK);
}
}
This should be into your main package where
#SpringBootApplication
public class YourApplication {
public static void main(String[] args) {
SpringApplication.run(YourApplication.class, args);
}
}
this main class resides.
I hope, this will help.

Answer 3

Seems using #JsonTest does not even allow to load Application Context, results mapping is not loaded and its throw 404 so #JsonTest is not a replacement for #SpringBootTest, it is a way to easily test json serialization/de-serialization.
As per documentation:
you can use the #JsonTest annotation. #JsonTest auto-configures the
available supported JSON mapper, which can be one of the following
libraries:
Jackson ObjectMapper, any #JsonComponent beans and any Jackson Modules
Gson
Jsonb
If by using Gson and removing #JsonTest your test run fine..(add Gson Dependency in pom)
#SpringBootTest
#AutoConfigureMockMvc
#RunWith(SpringRunner.class)
public class DemoKj01ApplicationTests {
#Autowired
private MockMvc mockMvc;
private static Transaction transaction;
#BeforeClass
public static void createTransaction(){
BigDecimal amount = new BigDecimal(12.3343);
transaction = new Transaction(amount.toString(),
"2010-10-02T12:23:23Z");
}
#Test
public void getTransactionStatus() throws Exception {
//final String transactionJson = json.write(transaction).getJson();
Gson gson = new Gson();
String jsonRequest = gson.toJson(transaction);
mockMvc
.perform(post("/api/transactions")
.content(jsonRequest)
.contentType(APPLICATION_JSON_UTF8))
.andExpect(status().isOk());
}

Answer 4

It is beacause of the trailing slas in #RequestMapping(value = "/transactions/", method = RequestMethod.POST)
Remove it and it will be ok : value = "/transactions/" => value = "/transactions"