jdom多层次xml解析

如何用jdom解析下列xml获取最里层的内容？
<?xml version="1.0" encoding="UTF-8"?>
<worktableConfig>
    <mission id="1" name="测试1">
        <file name= "AAA">           
            <url>/pageFlow/common/Auditing/begin.do?functionId=syjd_sy&amp;flag=SLDAUDI </url>
            <sql>select COUNT(0) from T_DATA_CRS T WHERE KSSBH = {locationID} AND T.R_SYLX=0 AND T.R_SYZT = 0 </sql>
        </file>
        <file  name= "BBB">
            <url>/pageFlow/common/Auditing/begin.do?functionId=syjd_sy&amp;flag=SLDAUDI </url>
            <sql>select COUNT(0) from T_DATA_CRS T WHERE KSSBH = {locationID} AND T.R_SYLX=0 AND T.R_SYZT = 0 </sql>
        </file>
    </mission>
   
 
    <mission id="2" name="测试2">
        <file name="CCC">
            <url>/pageFlow/nqwm/tqcs/tscs/Chusuo.jpf </url>
  &nbs