有一个关于插入xml的问题想请教下.
xml文件如下:
<?xml version="1.0" encoding="GB2312"?>
<Answerers nextid="3">
<Answerer id="1">
<GuessabilityQ answerer_id="1">
<ImageName>/ImageTest/question/lihong/GuessabilityTest/image/Y_02.gif</ImageName>
<Answer>hjg</Answer>
<InputDate>Thu May 11 15:05:45 CST 2006</InputDate>
</GuessabilityQ>
</Answerer>
<Answerer id="2">
<GuessabilityQ answerer_id="1">
<ImageName>/ImageTest/question/lihong/GuessabilityTest/image/Y_02.gif</ImageName>
<Answer>dfgd</Answer>
<InputDate>Thu May 11 15:11:12 CST 2006</InputDate>
</GuessabilityQ>
</Answerer>
</Answerers>
想在<Answerer id="2">
下再插入一组
<GuessabilityQ>，正确的xml文件应该是
<?xml version="1.0" encoding="GB2312"?>
<Answerers nextid="3">
<Answerer id="1">
<GuessabilityQ answerer_id="1">
<ImageName>/ImageTest/question/lihong/GuessabilityTest/image/Y_02.gif</ImageName>
<Answer>hjg</Answer>
<InputDate>Thu May 11 15:05:45 CST 2006</InputDate>
</GuessabilityQ>
</Answerer>
<Answerer id="2">
<GuessabilityQ answerer_id="1">
<ImageName>/ImageTest/question/lihong/GuessabilityTest/image/Y_02.gif</ImageName>
<Answer>dfgd</Answer>
<InputDate>Thu May 11 15:11:12 CST 2006</InputDate>
</GuessabilityQ>
<GuessabilityQ answerer_id="2">
<ImageName>/ImageTest/question/lihong/GuessabilityTest/image/Y_05.gif</ImageName>
<Answer>22</Answer>
<InputDate>Thu May 11 15:11:12 CST 2006</InputDate>
</GuessabilityQ>
</Answerer>
</Answerers>
我现在的代码总是定位不出来这部分应该插入的位置，正确的是放在第二个<answerer>下。
现在我可以知道的是<Answerer id="？">这个id我能知道。
请高人指点。
部分程序如下：
Node first = document.getFirstChild();
NodeList list = first.getChildNodes();
Node root =list.item(？);
这个问号的地方就是我找不准的地方，应该怎么写呢。
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2006/5/11 15:43:00
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求助!有一个关于插入xml的问题想请教下
