struts2下载出问题
if (inputStream == null) { // Find the inputstream from the invocation variable stack inputStream = (InputStream) invocation.getStack().findValue(conditionalParse(inputName, invocation)); } if (inputStream == null) { String msg = ("Can not find a java.io.InputStream with the name [" + inputName + "] in the invocation stack. " + "Check the <param name=\"inputName\"> tag specified for this action."); LOG.error(msg); throw new IllegalArgumentException(msg); }
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