Tomcat exception Cannot call sendError() after the response has been committed?

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While doing some operations in my application I got

java.lang.IllegalStateException Cannot call sendError()

When I reload the page again it work some time properly, but after some time again it shows the same exception. How can I overcome this exception?

Below is the exception:

HTTP Status 500 - Cannot call sendError() after the response has been committed
type Exception report
message Cannot call sendError() after the response has been committed
description The server encountered an internal error that prevented it from fulfilling this request.
exception 
java.lang.IllegalStateException: Cannot call sendError() after the response has been committed
org.apache.catalina.connector.ResponseFacade.sendError(ResponseFacade.java:451)
org.apache.struts2.dispatcher.Dispatcher.sendError(Dispatcher.java:725)
org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:485)
org.apache.struts2.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:395)
note The full stack trace of the root cause is available in the Apache Tomcat/7.0.40 logs.

Struts.xml

<struts>
    <package name="default" extends="hibernate-default">
        <action name="addUser" method="add" class="com.demo.action.UserAction">
            <result name="input">/register.jsp</result>
            <result name="success" type="redirect">list</result>
        </action>
        <action name="list" method="list" class="com.demo.action.UserAction">
            <interceptor-ref name="basicStackHibernate" />
            <result name="success">/list.jsp</result>
        </action>
    </package>
</struts>

This error is a symptom of some other problem, not the root cause you're looking for.

This error explains why the user can't be redirected to the error page. (Reason: the server has already flushed part of the response buffer back to the client - it's too late to switch/redirect to the error page.)

As the error message points out, check elsewhere in your Apache Tomcat 7 logs (or debug your app another way) to find what is throwing an exception.

Solved: Tomcat exception Cannot call sendError() after the , message Cannot call sendError() after the response has been committed exception java.lang.IllegalStateException: Cannot call sendError() after the note The full stack trace of the root cause is available in the Apache Tomcat/8.0.​48 logs. Tomcat exception Cannot call sendError() after the response has been committed paperno3. Jul 31, 2012. CF 10 Developer Edition. Windows XP SP3.

I solved this error by adding @jsonIgnore to all getters for a List of another object

Solved: HTTP Status 500, Exception java.lang.IllegalStateException: Cannot call sendError() after the response has been committed org.apache.catalina.connector.ResponseFacade. HTTP Status 500 - Cannot call sendError() after the response has been committed type Exception report message Cannot call sendError() after the response has been committed

I was creating a @ManyToOne and @OneToMany relationship. I added @JsonIgnore above the @ManyToOne and it solved the error.

Solved: Cannot call sendError() after the response has bee, IllegalStateException: Cannot call sendError() after the response has 2018-11-​11 13:30:20,764 ERROR c.h.r.s.RestExceptionLoggingFilter - REST API IllegalStateException: Cannot call sendError() after the response has been committed at doRun(NioEndpoint.java:1459) [tomcat-coyote.jar:8.5.23] at  SEVERE: Servlet.service() for servlet [OpenESignFormsVaadin7Application] in context with path [/open-eSignFormsVaadin7] threw exception java.lang.IllegalStateException: Cannot call sendError() after the response has been committed at org.apache.catalina.connector.ResponseFacade.sendError(ResponseFacade.java:451)

This is a common error and there can be various root cause can be identified. In my case I were opening pdf file from the web service and for this I were performing write operation in file using buffer. So kindly change below:

        File outfile = File.createTempFile("temp", ".pdf");

        OutputStream os=new FileOutputStream(outfile);
        byte[] buffer = new byte[1024];

        int length;
        /*copying the contents from input stream to
         * output stream using read and write methods
         */
        while ((length = is.read(buffer)) > 0){
            os.write(buffer, 0, length);
        }

to

        File outfile = File.createTempFile("temp", ".pdf");
        IOUtils.copy(is, new FileOutputStream(outfile));

and after this I were performing below operation:

    javax.ws.rs.core.Response.ResponseBuilder responseBuilder = javax.ws.rs.core.Response
                .ok(outfile, MediaType.APPLICATION_OCTET_STREAM);
                responseBuilder.header("content-type","application/pdf");

             return responseBuilder.build();

and error get resolved. Cheers!

IllegalStateException: Cannot call sendError() after the response , After registering i am getting lot or errors in the log. unable to goto the bottom of this Cannot call sendError() after the response has been committed #322 sendError(ResponseFacade.java:472) ~[tomcat-embed-core-8.5.5.jar:8.5.5] doResolveException(DefaultHandlerExceptionResolver.java:164)  Dismiss Join GitHub today. GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together.

For others in my situation--What was happening was that I had two @Entity objects with a many to many relationship causing infinite json to be generated, causing spring security to throw this error. Try adding @JsonIgnore above your hibernate relationships.

Cannot call sendError() after the response has been committed , Originally by archie172 Using Tomcat 7.0.42 behind and Apache proxy with push IllegalStateException: Cannot call sendError() after the response has been  I solve it.Actually was a query taking 22s to execute and bring data.The jsp loads faster than the query so after the response has been comitted the application cannot call sendError(). This comment has been minimized.

Cannot call sendError() after the response has been committed, I am running Vaadin 7.2.4 on Tomcat 7.0.42 on Java 1.7.0_51 and if I leave my Cannot call sendError() after the response has been committed at IllegalStateException: Cannot call sendError() after the response has been. Details: Cannot call sendRedirect() after the response has been committed. Posted on June 3, 2016 at 1:54am. 0. Hi all, I am using visualizejs of jasperserver 6.2 on a remote server and deployed my UI calling a report from the jasperserver in the same remote server.

java.lang.IllegalStateException: Cannot call sendError() after the , java.lang.IllegalStateException: Cannot call sendError() after the response has been committed. Critical: Servlet.service() for servlet [default] in context with path​  Hi, i am using spring-boot-admin version 1.4.2 and when i registering client using eureka. After registering i am getting lot or errors in the log. unable to goto the bottom of this issue. please h

java.lang.IllegalStateException: Cannot forward after response has been committed Posted on September 23, 2016 by admin A common misunderstanding among starters is that they think that the call of a forward(), sendRedirect(), or sendError() would magically exit and “jump” out of the method block, hereby ignoring the remnant of the code.

Comments
  • Are you by any chance redirecting the user before some additional logic in your sevlet? response.sendRedirect(SOMEWHERE);
  • @PopoFibo I am doing web application in struts2 and I configured redirect attribute because My response will print the user list . Thanking you very much
  • Could you update your question with the piece of code which includes your redirect statement?
  • @PopoFibo sure update now see the updated code.
  • You should check the Tomcat logs and post full stacktrace with the root cause.
  • About debugging in "another way", it's hard to debug the moment when response is commited because lack of org.apache.coyote.Response class during development, however there's available org.apache.catalina.connector.OutputBuffer where you can put breakpoint in flush() method.