InternalNioOutputBuffer.flushBuffer(InternalNioOutputBuffer.java:234)

Question

我正在开发一个servlet，它返回一些JSON对象，当我从浏览器调用这个servlet时，一切都很好，当字体端开发人员从JavaScript调用它时，在4或5个请求之后抛出这个异常：

14-Aug-2014 17:32:50.488 SEVERE [http-nio-8084-exec-16] org.apache.catalina.core.StandardWrapperValve.invoke Servlet.service() for servlet [Wkr570Controller] in context with path [] threw exception
 java.lang.NullPointerException
    at org.apache.coyote.http11.InternalNioOutputBuffer.flushBuffer(InternalNioOutputBuffer.java:234)
    at org.apache.coyote.http11.InternalNioOutputBuffer.addToBB(InternalNioOutputBuffer.java:189)
    at org.apache.coyote.http11.InternalNioOutputBuffer.commit(InternalNioOutputBuffer.java:177)
    at org.apache.coyote.http11.AbstractHttp11Processor.action(AbstractHttp11Processor.java:739)
    at org.apache.coyote.Response.action(Response.java:178)
    at org.apache.coyote.http11.AbstractOutputBuffer.doWrite(AbstractOutputBuffer.java:250)
    at org.apache.coyote.Response.doWrite(Response.java:523)
    at org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:391)
    at org.apache.tomcat.util.buf.ByteChunk.flushBuffer(ByteChunk.java:426)
    at org.apache.catalina.connector.OutputBuffer.realWriteChars(OutputBuffer.java:474)
    at org.apache.tomcat.util.buf.CharChunk.flushBuffer(CharChunk.java:393)
    at org.apache.tomcat.util.buf.CharChunk.append(CharChunk.java:337)
    at org.apache.catalina.connector.OutputBuffer.write(OutputBuffer.java:537)
    at org.apache.catalina.connector.CoyoteWriter.write(CoyoteWriter.java:174)
    at org.apache.catalina.connector.CoyoteWriter.write(CoyoteWriter.java:184)

有什么想法吗？

Answer 1

如果有人在两年后来到这里：

这似乎是Tomcat中的一个错误。

请参阅https://bz.apache.org/bugzilla/show_bug.cgi?id=58646

将Tomcat更新到8.0.33或更高版本。这应该行得通。有关Tomcat6和Tomcat7的修复，请参阅我所链接的bug报告的底部。