[jira] [Created] (IO-728) IOUtils.copy throws NPE while setting MimeHeaders

["Anuj PB (Jira)" <ji...@apache.org>]

Anuj PB created IO-728:
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             Summary: IOUtils.copy throws NPE while setting MimeHeaders
                 Key: IO-728
                 URL: https://issues.apache.org/jira/browse/IO-728
             Project: Commons IO
          Issue Type: Bug
          Components: Utilities
    Affects Versions: 2.5
         Environment: Java Version: 1.8

Spring version: 4.3.11.RELEASE

Spring boot version: 2.0.5.RELEASE

Jersey version: 2.16
            Reporter: Anuj PB
         Attachments: StackTrace

I have a Spring Boot Microservice and I am using IOUtils.copy(InputStream, OutputStream) which sporadically throws NPE while setting MimeHeaders as shown below:

2021-03-18 18:14:05.081 ERROR [http-nio-80-exec-8] o.a.c.c.C.[.[.[.[dispatcherServlet] - Servlet.service() for servlet [dispatcherServlet] threw exception2021-03-18 18:14:05.081 ERROR [http-nio-80-exec-8] o.a.c.c.C.[.[.[.[dispatcherServlet] - Servlet.service() for servlet [dispatcherServlet] threw exception

java.lang.NullPointerException: null at org.apache.tomcat.util.http.MimeHeaders.setValue(MimeHeaders.java:318) at org.apache.coyote.http11.Http11Processor.prepareResponse(Http11Processor.java:1285) at org.apache.coyote.AbstractProcessor.action(AbstractProcessor.java:374) at org.apache.coyote.Response.action(Response.java:206) at org.apache.coyote.http11.Http11OutputBuffer.doWrite(Http11OutputBuffer.java:219) at org.apache.coyote.Response.doWrite(Response.java:602) at org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:352) at org.apache.catalina.connector.OutputBuffer.flushByteBuffer(OutputBuffer.java:833) at org.apache.catalina.connector.OutputBuffer.append(OutputBuffer.java:738) at org.apache.catalina.connector.OutputBuffer.writeBytes(OutputBuffer.java:399) at org.apache.catalina.connector.OutputBuffer.write(OutputBuffer.java:377) at org.apache.catalina.connector.CoyoteOutputStream.write(CoyoteOutputStream.java:96) at org.springframework.security.web.util.OnCommittedResponseWrapper$SaveContextServletOutputStream.write(OnCommittedResponseWrapper.java:639) at org.apache.commons.io.IOUtils.copyLarge(IOUtils.java:2147) at org.apache.commons.io.IOUtils.copy(IOUtils.java:2102) at org.apache.commons.io.IOUtils.copyLarge(IOUtils.java:2123) at org.apache.commons.io.IOUtils.copy(IOUtils.java:2078)

 

I have attached the complete stack trace in the attachment and also provided the environment where this appears.

I feel that there is some issue with the Commons IO lib and would like to know if this can be fixed.

 



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