getOutputStream() has already been called for this response异常的原因和解决方法

在使用tomcat6开发的过程中，由于要输出数据统计图，在后台每次生成图形到前台显示时，总是抛出异常，内容显示有：

getOutputStream() has already been called for this response

在百度一搜一大把，可见很多人都遇到过类似的问题，解决办法也差不多，在前台使用完输出流以后调用以下两行代码即可：

out.clear();
out = pageContext.pushBody();

但是我们的工程是在后台使用getOutputStream()，因此以上方法不适用。折腾了很久，终于明白了问题的本质是一样的，就是调用response.getWriter()和response.getOutputStream()相冲突的，所以只要避免这个情况问题就可以迎刃而解了！

详细参考链接：http://www.cnblogs.com/jorton/archive/2012/05/04/2482609.html

时间： 2024-10-04 17:20:22

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