BAEL-5715 Updated Code

spring-boot-modules/spring-boot-mvc-4/src/main/java/com/baeldung/postman/PostmanUploadDemo.java

@@ -0,0 +1,15 @@
+package com.baeldung.postman;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.web.servlet.config.annotation.EnableWebMvc;
+
+@SpringBootApplication
+@EnableWebMvc
+public class PostmanUploadDemo {
+
+    public static void main(String[] args) {
+        SpringApplication.run(PostmanUploadDemo.class, args);
+    }
+
+}

spring-boot-modules/spring-boot-mvc-4/src/main/java/com/baeldung/postman/controller/PostmanUploadController.java

@@ -0,0 +1,24 @@
+package com.baeldung.postman.controller;
+
+import org.springframework.http.ResponseEntity;
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.multipart.MultipartFile;
+
+import com.baeldung.postman.model.JsonRequest;
+
+@Controller
+public class PostmanUploadController {
+
+    @PostMapping("/uploadFile")
+    public ResponseEntity<String> handleFileUpload(@RequestParam("file") MultipartFile file){
+        return ResponseEntity.ok().body("file received successfully");
+    }
+
+    @PostMapping("/uploadJson")
+    public ResponseEntity<String> handleJsonInput(@RequestBody JsonRequest json){
+        return ResponseEntity.ok().body(json.getId()+json.getName());
+    }
+}

spring-boot-modules/spring-boot-mvc-4/src/main/java/com/baeldung/postman/model/JsonRequest.java

@@ -0,0 +1,30 @@
+package com.baeldung.postman.model;
+
+public class JsonRequest {
+    int id;
+    String name;
+
+    public JsonRequest() {
+    }
+
+    public JsonRequest(int id, String name) {
+        this.id = id;
+        this.name = name;
+    }
+
+    public int getId() {
+        return id;
+    }
+
+    public void setId(int id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+}

spring-boot-modules/spring-boot-mvc-4/src/test/java/com/baeldung/postman/controller/PostmanUploadControllerTest.java

@@ -0,0 +1,43 @@
+package com.baeldung.postman.controller;
+
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.content;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
+
+import org.junit.jupiter.api.Test;
+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.mock.web.MockMultipartFile;
+import org.springframework.test.web.servlet.MockMvc;
+import org.springframework.test.web.servlet.request.MockMvcRequestBuilders;
+
+import com.baeldung.postman.PostmanUploadDemo;
+import com.baeldung.postman.model.JsonRequest;
+import com.fasterxml.jackson.databind.ObjectMapper;
+
+@SpringBootTest(classes = PostmanUploadDemo.class)
+@AutoConfigureMockMvc
+public class PostmanUploadControllerTest {
+    @Autowired
+    private MockMvc mockMvc;
+
+    @Test
+    public void givenJson_whenUploaded_thenSuccessReturned() throws Exception {
+        JsonRequest request = new JsonRequest(1, "John Doe");
+        this.mockMvc.perform(MockMvcRequestBuilders.post("/uploadJson")
+            .contentType(MediaType.APPLICATION_JSON)
+            .content(new ObjectMapper().writeValueAsString(request)))
+          .andExpect(status().isOk())
+          .andExpect(content().string("1John Doe"));
+    }
+
+    @Test
+    public void givenFile_whenUploaded_thenSuccessReturned() throws Exception {
+        MockMultipartFile request = new MockMultipartFile("dummy", "{\"key\": \"value\"}".getBytes());
+        this.mockMvc.perform(MockMvcRequestBuilders.multipart("/uploadFile")
+            .file("file", request.getBytes()))
+          .andExpect(status().isOk())
+          .andExpect(content().string("file received successfully"));
+    }
+}