NPE in sample/java-spring-boot-mvc

sample/java-spring-boot-mvc/src/main/java/com/benjaminsproule/sample/springboot/mvc/AEnum.java

@@ -0,0 +1,6 @@
+package com.benjaminsproule.sample.springboot.mvc;
+
+public enum AEnum {
+
+    A, B, C;
+}

sample/java-spring-boot-mvc/src/main/java/com/benjaminsproule/sample/springboot/mvc/DEnum.java

@@ -0,0 +1,7 @@
+package com.benjaminsproule.sample.springboot.mvc;
+
+public enum DEnum {
+
+    D, E, F;
+
+}

sample/java-spring-boot-mvc/src/main/java/com/benjaminsproule/sample/springboot/mvc/EnumWrapper.java

@@ -0,0 +1,35 @@
+package com.benjaminsproule.sample.springboot.mvc;
+
+public class EnumWrapper<T extends Enum<T>> {
+
+    private String name;
+
+    private T enumeration;
+
+    public EnumWrapper() {
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public T getEnumeration() {
+        return enumeration;
+    }
+
+    public void setEnumeration(T enumeration) {
+        this.enumeration = enumeration;
+    }
+
+    @Override
+    public String toString() {
+        return "EnumWrapper{" +
+            "name='" + name + '\'' +
+            ", enumeration=" + enumeration +
+            '}';
+    }
+}

sample/java-spring-boot-mvc/src/main/java/com/benjaminsproule/sample/springboot/mvc/SampleApplication.java

@@ -3,7 +3,7 @@
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 
-@SpringBootApplication
+@SpringBootApplication(scanBasePackages = "com.benjaminsproule.sample.springboot.mvc")
 public class SampleApplication {
 
     public static void main(String[] args) {

sample/java-spring-boot-mvc/src/main/java/com/benjaminsproule/sample/springboot/mvc/SampleResource.java

@@ -1,16 +1,21 @@
 package com.benjaminsproule.sample.springboot.mvc;
 
 import io.swagger.annotations.ApiOperation;
-import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.bind.annotation.RequestMethod;
-import org.springframework.web.bind.annotation.RestController;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
 
 @RestController
 public class SampleResource {
 
-    @RequestMapping(method = RequestMethod.GET, path = "/sample", produces = "application/json")
-    @ApiOperation(value = "Return hello message", response = String.class)
-    public String home() {
-        return "{\"Hello\": \"World!\"}";
+    @GetMapping(path = "/home", produces = "application/json")
+    @ApiOperation(value = "Return hello message")
+    public ResponseEntity<String> home() {
+        return ResponseEntity.ok("{\"Hello\": \"World!\"}");
+    }
+
+    @PostMapping(path = "/transform")
+    @ApiOperation(value = "Transform enum")
+    public ResponseEntity<EnumWrapper<AEnum>> transform(EnumWrapper<DEnum> enumWrapper) {
+        return ResponseEntity.ok(new EnumWrapper<>());
     }
 }