Moved MediaTypeNotAcceptableException article from spring-mvc-java to spring-mvc-basics module, and added test

spring-mvc-basics/src/main/java/com/baeldung/exception/HttpMediaTypeNotAcceptableExceptionExampleController.java

@@ -0,0 +1,29 @@
+package com.baeldung.exception;
+
+import java.util.Collections;
+import java.util.Map;
+
+import org.springframework.http.MediaType;
+import org.springframework.web.HttpMediaTypeNotAcceptableException;
+import org.springframework.web.bind.annotation.ControllerAdvice;
+import org.springframework.web.bind.annotation.ExceptionHandler;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.ResponseBody;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+@ControllerAdvice
+public class HttpMediaTypeNotAcceptableExceptionExampleController {
+
+    @PostMapping(value = "/test", consumes = MediaType.APPLICATION_JSON_VALUE, produces = MediaType.APPLICATION_JSON_VALUE)
+    public Map<String, String> test() {
+        return Collections.singletonMap("key", "value");
+    }
+
+    @ResponseBody
+    @ExceptionHandler(HttpMediaTypeNotAcceptableException.class)
+    public String handleHttpMediaTypeNotAcceptableException() {
+        return "acceptable MIME type:" + MediaType.APPLICATION_JSON_VALUE;
+    }
+
+}

spring-mvc-basics/src/test/java/com/baeldung/exception/HttpMediaTypeNotAcceptableExceptionControllerIntegrationTest.java

@@ -0,0 +1,30 @@
+package com.baeldung.exception;
+
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.post;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.content;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.http.MediaType;
+import org.springframework.test.context.junit4.SpringRunner;
+import org.springframework.test.web.servlet.MockMvc;
+
+import com.baeldung.Application;
+
+@RunWith(SpringRunner.class)
+@SpringBootTest(classes = Application.class)
+@AutoConfigureMockMvc
+public class HttpMediaTypeNotAcceptableExceptionControllerIntegrationTest {
+
+    @Autowired
+    MockMvc mockMvc;
+
+    @Test
+    public void whenHttpMediaTypeNotAcceptableExceptionTriggered_thenExceptionHandled() throws Exception {
+        mockMvc.perform(post("/test").contentType(MediaType.APPLICATION_JSON).accept(MediaType.APPLICATION_PDF))
+            .andExpect(content().string("acceptable MIME type:application/json"));
+    }
+}