Servlet“响应已提交"的原因 [英] Cause of Servlet's 'Response Already Committed'

问题描述

在 servlet 中遇到此异常的常见可能性有哪些 - 响应已提交?

What are the common possibilities to encounter this exception in servlet - Response Already committed?

推荐答案

响应被提交的原因如下:

The response gets committed because of the following reasons:

• 因为响应缓冲区已达到最大缓冲区大小.可能是因为以下原因:

• Because the Response buffer has reached the max buffer size. It could be because of the following reasons:

  > the bufferSize in JSP page has reached.You can increase the JSP buffer size 
    in page directive. See here, 

   <%@ page buffer="5kb" autoFlush="false" %>

  > the server default response max buffer size has reached.You can increase    
    the server default max buffer size.

    ServletRespnse.setBufferSize()

部分代码在响应上调用了flushed，即调用了HttpServletResponse.flushBuffer()方法.

部分代码刷新了OutputStream或Writer，即调用了HttpServletResponse.getOutputStream().flush() 或 `HttpServletResponse.getWriter().flush()

Some part of the code has flushed the OutputStream or Writer, i,e, invoked the method HttpServletResponse.getOutputStream().flush() or `HttpServletResponse.getWriter().flush()

如果您已转发到另一个页面，该页面的响应既已提交又已关闭.例如，当 response.sendRedirect() 被调用时，响应被提交.

If you have forwarded to another page, where the response is both committed and closed. For example, when response.sendRedirect() has been called, the response is committed.

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