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dom½âÎöXML - Java / JavaÏà¹Ø

XML code:

<?xml version="1.0" encoding="utf-8"?>
<info>
<status>ok</status>
<error/>
<item><uid>1</uid><email>111@163.com</email></item>
<item><uid>2</uid><email></email></item>
<item><uid>2</uid><other/></item>
</info>



ÀûÓÃDOM½âÎöÕâ¸öXML,¹ý³ÌÊÇÕâÑù
1.ÏÈÅжÏstatusÊÇ·ñΪOk
2.Èç¹ûΪOK¾É½âÎöinfo,Èç¹ûΪerror¾Í¶ÁÈ¡error×Ö½ÚµÄÄÚÈÝ

ÎÊÌâÆäʵ²»ÊÇÔÚÁ÷³ÌÉÏ.
¶øÊÇÔÚ¶ÁÈ¡×Ö½ÚÉÏ.
ÎÊÌâ
1.µ±email×Ö¶ÎΪ¿ÕµÄʱºò.ÎÒÀûÓà
Document xml
xml.getElementsByTagName("email").item(i).getFirstChild().getNodeValue();
¾Í»á±¨´í,˵nullpointer
ÄѵÀÒªÈçϵÄÅжÏ
if(xml.getElementsByTagName("email")!=null &&xml.getElementsByTagName("email").item(i).getFirstChild()!=null)
{
...
}
2.ÅжÏÈç<email/>ÕâЩֵÊÇ·ñΪ¿ÕÒ²ÈçÉÏÂð?
3.ÅжÏÊÇitemÊÇ·ñº¬ÓÐ<other/>×Ö½ÚÊÇxml.getElementsByTagName("other")!=nullÕâÑùÂð?ÎÒÊÔÊDz»ÐеÄ.²»ÖªµÀÊÇÔõôÑùµÄÄØ?


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