getOutputStream() has already been called for this response解决方案
程序员文章站
2022-07-12 16:03:26
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异常产生原因:web容器生成的servlet代码中有out.write(""),这个和JSP中调用的response.getOutputStream()产生冲突.即Servlet规范说明,不能既调用response.getOutputStream(),又调用response.getWriter(),无论先调用哪一个,在调用第二个时候应会抛出IllegalStateException,因为在jsp中,out变量实际上是通过response.getWriter得到的,你的程序中既用了 response.getOutputStream,又用了out变量,故出现以上错误。
1、Jsp解决办法,在程序的最后添加:
out.clear();
out = pageContext.pushBody();
2、Struts2解决办法
直接让action中的处理方法返回null,问题就解决啦!!!
原文地址:http://www.cnblogs.com/linjiqin/p/3148091.html
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