用JDOM读写XML的源代码，实现简单的读写XML功能，要先导JDOM的jar包，...

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用JDOM读写XML的源代码，实现简单的读写XML功能，要先导JDOM的jar包，-To read and write XML with JDOM source code to achieve a simple read and write XML functionality, to the pilot JDOM the jar package,