caused by: java.lang.noclassdeffounderror: org/springframework/boot/configurationprocessor/json/jsonexception

Step 1: Understanding the Error

The error message you encountered is java.lang.NoClassDefFoundError: org/springframework/boot/configurationprocessor/json/JSONException. This error typically occurs when a required class is not found during runtime.

Step 2: Identifying the Cause

In this case, the error is caused by the absence of the org.springframework.boot.configurationprocessor.json.JSONException class. This class is part of the Spring Boot Configuration Processor module and is used for processing JSON configurations.

Step 3: Analyzing Possible Causes

There are a few potential causes for this error:

  1. Missing Dependency: The most common cause is that the required dependency for the org.springframework.boot.configurationprocessor.json.JSONException class is missing from your project. This could happen if you haven't included the necessary Spring Boot Configuration Processor dependency in your project's build configuration file (e.g., pom.xml for Maven or build.gradle for Gradle).

  2. Incompatible Versions: Another possible cause is that you have incompatible versions of libraries or dependencies in your project. It's important to ensure that all the dependencies in your project, including Spring Boot and its related modules, are compatible with each other.

  3. Corrupted JAR File: It's also possible that the JAR file containing the org.springframework.boot.configurationprocessor.json.JSONException class is corrupted or missing. In this case, you can try re-downloading the dependency or cleaning and rebuilding your project.

Step 4: Resolving the Issue

To resolve the java.lang.NoClassDefFoundError: org/springframework/boot/configurationprocessor/json/JSONException error, you can follow these steps:

  1. Check Dependencies: Make sure that you have the correct dependency included in your project's build configuration file. For Maven, check the pom.xml file, and for Gradle, check the build.gradle file.

  2. Update Dependencies: If you have verified that the dependency is included in your project, try updating the version of the Spring Boot Configuration Processor dependency to the latest compatible version. This can help resolve any compatibility issues.

  3. Clean and Rebuild: If the JAR file containing the required class is corrupted or missing, you can try cleaning and rebuilding your project. This will ensure that all the necessary dependencies are downloaded and included in your project.

  4. Check Compatibility: Double-check the compatibility of your Spring Boot and related dependencies. Make sure that all the versions are compatible with each other.

By following these steps, you should be able to resolve the java.lang.NoClassDefFoundError: org/springframework/boot/configurationprocessor/json/JSONException error and successfully run your Spring application.