用java实现文件下载,提示java.lang.IllegalStateException: getOutputStream() has already been called for this response

1、 用java实现文件下载,提示java.lang.IllegalStateException: getOutputStream() has already been called for this response

2、代码如下用java实现文件下载,提示java.lang.IllegalStateException: getOutputStream() has already been called for this response

3、控制台提示信息图

用java实现文件下载,提示java.lang.IllegalStateException: getOutputStream() has already been called for this response

4、解决方案是:在给处理下载文件转发的jsp页面,添加

<%
out.clear();
out = pageContext.pushBody();
%>

用java实现文件下载,提示java.lang.IllegalStateException: getOutputStream() has already been called for this response

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