异常 getOutputStream() has already been called for this response
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在做文件下载时,jsp出现getOutputStream() has already been called for this response的异常
估计是在 Action class 中拿到 response.getOutputStream(), 并且将数据输出了,然而此 Action 又返回一个 ActionForward, 这样又有数据输出。
解决此问题可以用下面方法。
将 ActionForward 类型修改为 void,像下面这样:
public ActionForward methodName()
--------》
public void methodName()
这个问题是在处理文件下载问题时遇到。
做个笔记,到时候试试。
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