e.getMessage()=null

如題，捕獲異常時，日誌打印e.getMessage()爲null

解決方案：

try {
	//業務代碼
} catch (Exception e) {
	if (e instanceof InvocationTargetException && e.getMessage() == null) {
		LogCache.info(LogDebug.key,"e:" + ((InvocationTargetException)e).getTargetException().getMessage());
    }
}