Jolt is a JSON-to-JSON transformation - Java Spring Boot application
Jolt is a JSON-to-JSON transformation library that allows you to define transformation specifications to modify the structure and content of JSON data. In a Java Spring Boot application, you can use Jolt to perform JSON transformations by integrating it into your codebase.
Here's a general outline of how you can implement Jolt transformations into a Java Spring Boot application:
Step 1: Add Jolt Dependency
Include the Jolt dependency in your Spring Boot project's `pom.xml`:
<dependency>
???<groupId>com.bazaarvoice.jolt</groupId>
???<artifactId>jolt-core</artifactId>
???<version>0.1.0</version> <!-- Replace with the latest version -->
</dependency>
Step 2: Create a Jolt Transformation Specification
Define your Jolt transformation specification in a JSON file. This specification describes how the input JSON should be transformed into the desired output JSON structure.
For example:
json
[
?{
???"operation": "shift",
???"spec": {
?????"originalField": "newField"
???}
?}
]
Step 3: Load the Transformation Specification
In your Spring Boot application, you can load the transformation specification from a file or a resource:
Java
import com.bazaarvoice.jolt.Chainr;
import com.bazaarvoice.jolt.JsonUtils;
import org.springframework.core.io.ClassPathResource;
// ...
ClassPathResource resource = new ClassPathResource("path/to/transformation-spec.json");
List<Object> chainrSpecJSON = JsonUtils.classpathToList(resource.getInputStream());
Chainr chainr = Chainr.fromSpec(chainrSpecJSON);
Step 4: Perform Transformation
Apply the loaded Jolt transformation to your input JSON data:
java
import com.bazaarvoice.jolt.JsonUtils;
import java.util.List;
// ...
String inputJson = "{\"originalField\":\"value\"}";
Object inputJsonObject = JsonUtils.jsonToObject(inputJson);
Object transformedJsonObject = chainr.transform(inputJsonObject);
String transformedJson = JsonUtils.toJsonString(transformedJsonObject);
Step 5: Integrate into Spring Boot
You can integrate the Jolt transformation logic into your Spring Boot application's services or controllers based on your requirements.
For example:
java
import org.springframework.stereotype.Service;
@Service
public class TransformationService {
???// Inject the chainr instance
???private final Chainr chainr;
???public TransformationService(Chainr chainr) {
???????this.chainr = chainr;
???}
???public String transformJson(String inputJson) {
???????Object inputJsonObject = JsonUtils.jsonToObject(inputJson);
???????Object transformedJsonObject = chainr.transform(inputJsonObject);
???????return JsonUtils.toJsonString(transformedJsonObject);
???}
}
Reference: