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Org springframework web reactive function unsupportedmediatypeexception content type text htmlcharsetiso 8859 1 not supported for bodytype – Java

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“org.springframework.web.reactive.function.UnsupportedMediaTypeException: Content type ‘text/html;charset=ISO-8859-1’ not supported for bodyType” is an error message encountered when working with the Spring Framework, particularly when working with Spring’s WebFlux module for building reactive web applications.

This error message generally indicates that the request sent to the application’s server is using a media type (in this case ‘text/html’) that is not supported by the application’s configuration. The server is expecting a request to use a different media type (such as ‘application/json’ or ‘application/xml’) and is unable to process the request.

To solve this issue, the developer should check the client-side of the application, whether it is sending request with unsupported media type. If the request is coming from developer’s application, then the developer should change the request to use a media type that is supported by the server.

Additionally, the developer should check the configuration of the server-side application to ensure that it is properly configured to support the desired media types. This can be done by reviewing the configuration of the ContentNegotiationManager in the application’s configuration. If the server is configured to only support certain media types, the developer will need to add support for the ‘text/html’ media type in order to resolve this error.

It is important to note that the specific media type used in the example error message ‘text/html;charset=ISO-8859-1’ is not itself a problem, but rather a symptom of a larger issue. The root cause is that the server is not able to handle the content type sent by client.

In summary, the error message “org.springframework.web.reactive.function.UnsupportedMediaTypeException: Content type ‘text/html;charset=ISO-8859-1’ not supported for bodyType” is encountered when the Spring Framework’s WebFlux module receives a request with a media type that is not supported by the application’s configuration. To resolve this issue, the developer should check the client-side of the application, and the server-side configuration, to ensure that the correct media types are being used.