If a file in the partial application does not exist in the deployed application EAR, then it is added to the deployed EAR file as a result of update operation.
如果部分应用程序中的文件不存在于已部署的应用程序EAR中，则更新操作会将其添加到已部署的EAR文件。
If the file does not exist, this method creates a file, writes the specified string to the file, then closes the file.
如果档案不存在，则这个方法会建立档案，将指定的字串写入档案，然后关闭档案。
If the file does not exist, this method creates a file, writes the specified string to the file, then closes the file.
如果档案不存在，则这个方法会建立档案，将指定的字串写入档案，然后关闭档案。
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