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https://issues.apache.org/jira/browse/CAMEL-19257?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Claus Ibsen updated CAMEL-19257:
--------------------------------
Fix Version/s: 3.20.4
3.21.0
4.0-M3
4.0
> camel-jslt: Exception when using camel-jslt in Tomcat Servlet
> -------------------------------------------------------------
>
> Key: CAMEL-19257
> URL: https://issues.apache.org/jira/browse/CAMEL-19257
> Project: Camel
> Issue Type: Bug
> Affects Versions: 3.20.3, 4.0-M2
> Reporter: Jacek Szymański
> Priority: Major
> Fix For: 3.20.4, 3.21.0, 4.0-M3, 4.0
>
>
> When a JSLT transformation is used in a route which is called from a Tomcat
> Servlet in Spring Boot, an exception is thrown after the Exchange is
> completely processed and the response is being returned to the client:
> {{java.lang.IllegalStateException: getWriter() has already been called for
> this response}}
> {{at
> org.apache.catalina.connector.Response.getOutputStream(Response.java:552)
> ~[tomcat-embed-core-9.0.70.jar:9.0.70]}}
> {{at
> org.apache.catalina.connector.ResponseFacade.getOutputStream(ResponseFacade.java:210)
> ~[tomcat-embed-core-9.0.70.jar:9.0.70]}}
> {{at
> org.apache.camel.http.common.DefaultHttpBinding.doWriteDirectResponse(DefaultHttpBinding.java:537)
> ~[camel-http-common-3.20.3.jar:3.20.3]}}
> {{at
> org.apache.camel.http.common.DefaultHttpBinding.doWriteResponse(DefaultHttpBinding.java:439)
> ~[camel-http-common-3.20.3.jar:3.20.3]}}
> {{at
> org.apache.camel.http.common.DefaultHttpBinding.writeResponse(DefaultHttpBinding.java:362)
> ~[camel-http-common-3.20.3.jar:3.20.3]}}
> {{at
> org.apache.camel.http.common.CamelServlet.afterProcess(CamelServlet.java:349)
> ~[camel-http-common-3.20.3.jar:3.20.3]}}
> This happens because the Response object is held in a header and getWriter()
> gets prematurely called when the headers are serialized in
> JsltEndpoint.extractVariables().
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