当使用一个设置目录，我应该导入它吗？
When working with a Settings directory, where should I import it?
SAX提供了一种标准的特性机制，该机制可以让调用者设置目录。
SAX offers a standard property mechanism that lets the caller sets the directory.
所有涉及服务器的地方，都要先设置目录地址，再设置相关信息。
Where the server is involved, you shall set the directory address before setting other relevant information.
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