Support spring 7

[I554344]

Describe the Problem

After upgrading our application to use spring boot 4 (uses spring 7), we are not able to run the application because of the error:

An attempt was made to call a method that does not exist. The attempt was made from the following location:

com.sap.cloud.sdk.services.openapi.apiclient.ApiClient.addDefaultHeader(ApiClient.java:341)

The following method did not exist:

    'java.util.List org.springframework.http.HttpHeaders.remove(java.lang.Object)'

The calling method's class, com.sap.cloud.sdk.services.openapi.apiclient.ApiClient jar:file:.../.m2/repository/com/sap/cloud/sdk/datamodel/openapi-core/5.32.0/openapi-core-5.32.0.jar!/com/sap/cloud/sdk/services/openapi/apiclient/ApiClient.class

The called method's class, org.springframework.http.HttpHeaders, is available from the following locations:

    jar:file:.../.m2/repository/org/springframework/spring-web/7.0.8/spring-web-7.0.8.jar!/org/springframework/http/HttpHeaders.class

The called method's class hierarchy was loaded from the following locations:

    org.springframework.http.HttpHeaders: file:.../.m2/repository/org/springframework/spring-web/7.0.8/spring-web-7.0.8.jar


Action:

Correct the classpath of your application so that it contains compatible versions of the classes com.sap.cloud.sdk.services.openapi.apiclient.ApiClient and org.springframework.http.HttpHeaders

Propose a Solution

Support Spring 7

Describe Alternatives

No response

Affected Development Phase

Development

Impact

Blocked

Timeline

Considering that Spring 6.2 is end of life already, as soon as possible.

[Jonas-Isr]

Hi @I554344,

thanks for reaching out! Yes, we are aware that the SDK does not fully support Spring 7. For your use case you can use the openapi-core-apache module instead. This module offers similar functionality than openapi-core without any Spring dependencies and thus should be fine to use in your application. See also our documentation here.