Configuring Spring Boot to use Gson instead of Jackson

Spring-Boot/gson-spring-boot/src/main/java/com/javadevjournal/GsonSpringBootApplication.java

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+package com.javadevjournal;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.boot.autoconfigure.jackson.JacksonAutoConfiguration;
+
+@SpringBootApplication
+public class GsonSpringBootApplication {
+
+    public static void main(String[] args) {
+
+        SpringApplication.run(GsonSpringBootApplication.class, args);
+    }
+
+}
+

Spring-Boot/gson-spring-boot/src/main/resources/application.properties

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+spring.http.converters.preferred-json-mapper=gson

Spring-Boot/gson-spring-boot/src/test/java/com/javadevjournal/GsonSpringBootApplicationTests.java

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+package com.javadevjournal;
+
+import com.google.gson.Gson;
+import com.google.gson.GsonBuilder;
+import com.javadevjournal.data.Product;
+import org.json.JSONException;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.skyscreamer.jsonassert.JSONAssert;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.junit4.SpringRunner;
+
+@RunWith(SpringRunner.class)
+@SpringBootTest
+public class GsonSpringBootApplicationTests {
+
+    private Product product;
+
+    @Before
+    public void setup(){
+        product =new  Product("123","Demo Product",123);
+    }
+
+    @Test
+    public void simpleGsonTest() throws JSONException {
+        String expected = "{\n" +
+                "\"code\": \"123\",\n" +
+                "\"name\": \"Demo Product\",\n" +
+                "\"price\": 123\n" +
+                "}";
+
+        Gson gson = new GsonBuilder().create();
+        String data= gson.toJson(product);
+
+        JSONAssert.assertEquals(expected,data,false);
+    }
+
+    @Test
+    public void errorGsonTest() throws JSONException {
+        String expected = "{\n" +
+                "\"code\": \"1233\",\n" +
+                "\"name\": \"Demo Product\",\n" +
+                "\"price\": 123\n" +
+                "}";
+
+        Gson gson = new GsonBuilder().create();
+        String data= gson.toJson(product);
+
+        JSONAssert.assertEquals(expected,data,false);
+    }
+
+}
+