关于xml解析的问题
请教各位大大，使用digester，通过定义一个rules。xml解析下面那个xml，得到其中的数据
<?xml version="1.0" encoding="UTF-8" ?>
<layouts>
<layout name="encodeLayoutCode1" key="01">
<var>
<var-name>FC1</var-name>
<var-value>6C</var-value>
<var-size>2</var-size>
<var-variable>0</var-variable>
</var>
<var>
<var-name>styleCode</var-name>
<var-value>C2</var-value>
<var-size>2</var-size>
<var-variable>0</var-variable>
</var>
<var>
<var-name>memberNo</var-name>
<var-value></var-value>
<var-size>19</var-size>
<var-variable>1</var-variable>
</var>
<var>
<var-name>separator1</var-name>
<var-value>5F</var-value>
<var-size>2</var-size>
<var-variable>0</var-variable>
</var>
<var>
<var-name>RomeName</var-name>
<var-value></var-value>
<var-size>20</var-size>
<var-variable>1</var-variable>
</var>
<var>
<var-name>separator2</var-name>
<var-value>5F</var-value>
<var-size>2</var-size>
<var-variable>0</var-variable>
</var>
<var>
<var-name>exprDate</var-name>
<var-value></var-value>
<var-size>10</var-size>
<var-variable>1</var-variable>
</var>
<var>
<var-name>cardType</var-name>
<var-value></var-value>
<var-size>2</var-size>
<var-variable>1</var-variable>
</var>
<var>
<var-name>PIN</var-name>
<var-value>F0F0F0F0F0</var-value>
<var-size>10</var-size>
<var-variable>0</var-variable>
</var>
<var>
<var-name>FC2</var-name>
<var-value>6C</var-value>
<var-size>2</var-size>
<var-variable>0</var-variable>
</var>
</layout>

<layout name="encodeLayoutCode1" key="02">
<var>
<var-name>FC1</var-name>
<var-value>6C</var-value>
<var-size>2</var-size>
<var-variable>0</var-variable>
</var>
<var>
<var-name>memberNo</var-name>
<var-value></var-value>
<var-size>19</var-size>
<var-variable>1</var-variable>
</var>
<var>
<var-name>separator1</var-name>
<var-value>5F</var-value>
<var-size>2</var-size>
<var-variable>0</var-variable>
</var>
<var>
<var-name>RomeName</var-name>
<var-value></var-value>
<var-size>20</var-size>
<var-variable>1</var-variable>
</var>
<var>
<var-name>exprDate</var-name>
<var-value></var-value>
<var-size>10</var-size>
<var-variable>1</var-variable>
</var>
<var>
<var-name>FC2</var-name>
<var-value>6C</var-value>
<var-size>2</var-size>
<var-variable>0</var-variable>
</var>
</layout>

<layout name="encodeLayoutCode2" key="02">
<var>
<var-name>FC1</var-name>
<var-value>6C</var-value>
<var-size>2</var-size>
<var-variable>0</var-variable>
</var>
<var>
<var-name>memberNo</var-name>
<var-value></var-value>