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

本文转载自  查看原文  2016-12-16 16:40  22187    java.lang.IllegalStateException: getOutputStream()

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

3、控制台提示信息图

 

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();
%>

 


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