Here are a few question-based titles that fit the provided article: * **Spring JSON Request Returning 406 (Not Acceptable): How to Fix the Issue?** * **Why is my Spring JSON Request Returning a 406 (

Spring JSON Request Returning 406 (Not Acceptable)

This error typically indicates that the client's request header specifies an unacceptable MIME type for the response, while the server cannot generate a response with the requested MIME type.

In your case, the request header specifies application/json as the acceptable MIME type, but your Java method is not configured to produce JSON responses. To resolve this issue, ensure that you have:

1. Correct Java Libraries:

• Add Jackson libraries to your classpath:

  • jackson-core-asl-1.7.4.jar
  • jackson-mapper-asl-1.7.4.jar

2. Enable Spring MVC Annotation Driven Support:

• Add the following directive to your spring-servlet.xml:

  • <mvc:annotation-driven />

3. Remove Accept Header Directive (Optional):

• Remove headers="Accept=*/*" from your controller method as it is redundant with the @ResponseBody annotation.

Once you implement these changes, Spring MVC will automatically find the Jackson message converter and generate JSON responses for you, allowing your request to be processed properly.

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