Org.springframework.web.httpmediatypenotacceptableexception: could not find acceptable representation

When encountering the exception org.springframework.web.HttpMediaTypeNotAcceptableException: Could not find acceptable representation, it means that the server cannot provide a response in a format that can be accepted by the client. This usually occurs when the client sends a request specifying a certain format (e.g., XML or JSON) that the server cannot produce.

To resolve this issue, you can either make sure the server can provide a representation in the requested format or modify the client’s request to accept a format that the server can provide.

Example 1:

Let’s say the client sends a request with the following header:

    Accept: application/json
  

However, the server can only provide responses in XML format. In this case, the server will return the org.springframework.web.HttpMediaTypeNotAcceptableException because it cannot find an acceptable representation in JSON format.

To fix this, either modify the client’s request to accept XML format or update the server to provide responses in JSON format.

Example 2:

Another scenario is when the client requests a specific media type version that is not available on the server. For instance, if the client sends a request with the following header:

    Accept: application/xml;v=2
  

However, the server only supports version 1 of the XML format. In this case, the server will throw the org.springframework.web.HttpMediaTypeNotAcceptableException because it cannot find an acceptable representation for version 2 of the XML format.

To resolve this, either modify the client’s request to accept version 1 of the XML format or update the server to support version 2.