Debug Your Infrastructure

Get Instant Solutions for Kubernetes, Databases, Docker and more

AWS CloudWatch
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.
Pod Stuck in CrashLoopBackOff
Database connection timeout
Docker Container won't Start
Kubernetes ingress not working
Redis connection refused
CI/CD pipeline failing

Java Spring InvalidResponseTypeException

Happens when the response type is invalid or not supported.

Understanding Java Spring and Its Purpose

Java Spring is a comprehensive framework used for building enterprise-level applications. It provides infrastructure support for developing Java applications, allowing developers to focus on business logic. Spring's core features include dependency injection, aspect-oriented programming, and transaction management, making it a popular choice for creating robust and scalable applications.

Identifying the Symptom: InvalidResponseTypeException

When working with Java Spring, you might encounter an InvalidResponseTypeException. This exception typically occurs when the response type specified in your application is either invalid or not supported by the framework. The error message might look like this:

org.springframework.web.HttpMediaTypeNotSupportedException: InvalidResponseTypeException

This indicates that the application is unable to process the response due to an unsupported media type.

Exploring the Issue: What Causes InvalidResponseTypeException?

The InvalidResponseTypeException is triggered when the response type defined in your controller or service layer does not match any of the supported types by Spring. This could be due to a typo, an unsupported media type, or a misconfiguration in your application settings.

Common Scenarios Leading to the Exception

  • Using a response type that is not registered with Spring's message converters.
  • Incorrectly specifying the produces attribute in your @RequestMapping or @GetMapping annotations.
  • Missing or incorrect configuration of message converters in your Spring configuration.

Steps to Fix the InvalidResponseTypeException

To resolve the InvalidResponseTypeException, follow these steps:

Step 1: Verify Response Type

Ensure that the response type specified in your controller matches one of the supported media types. For example, if you are returning JSON, make sure your method is annotated with:

@GetMapping(value = "/endpoint", produces = MediaType.APPLICATION_JSON_VALUE)

Refer to the Spring MediaType documentation for a list of supported media types.

Step 2: Check Message Converters

Ensure that the necessary message converters are configured in your Spring application context. You can do this by checking your configuration class:

@Configuration
public class WebConfig implements WebMvcConfigurer {
@Override
public void configureMessageConverters(List> converters) {
converters.add(new MappingJackson2HttpMessageConverter());
}
}

This ensures that JSON responses are correctly handled.

Step 3: Review Annotations

Double-check the annotations used in your controller methods. Ensure that the produces attribute matches the expected response type:

@RequestMapping(value = "/api/data", method = RequestMethod.GET, produces = MediaType.APPLICATION_JSON_VALUE)

Step 4: Test and Validate

After making the necessary changes, test your application to ensure that the exception is resolved. Use tools like Postman or cURL to send requests to your API and verify the response type.

Conclusion

By following these steps, you should be able to resolve the InvalidResponseTypeException in your Java Spring application. Ensuring that your response types are correctly defined and supported by Spring's message converters is crucial for the smooth functioning of your application. For more detailed information, refer to the official Spring documentation.

Master 

Java Spring InvalidResponseTypeException

 debugging in Minutes

— Grab the Ultimate Cheatsheet

(Perfect for DevOps & SREs)

Most-used commands
Real-world configs/examples
Handy troubleshooting shortcuts
Your email is safe with us. No spam, ever.

Thankyou for your submission

We have sent the cheatsheet on your email!
Oops! Something went wrong while submitting the form.

Java Spring InvalidResponseTypeException

Cheatsheet

(Perfect for DevOps & SREs)

Most-used commands
Your email is safe thing.

Thankyou for your submission

We have sent the cheatsheet on your email!
Oops! Something went wrong while submitting the form.

MORE ISSUES

Deep Sea Tech Inc. — Made with ❤️ in Bangalore & San Francisco 🏢

Doctor Droid