我的 XML 看起来像这样-
<collected_objects>
<object flag="complete" id="objId" version="1">
<variable_value variable_id="varId">ValueGoesHere</variable_value>
<reference item_ref="2"/>
</object>
<object comment="objComment" flag="complete" id="objId" version="1">
<reference item_ref="1"/>
</object>
</collected_objects>
我正在使用下面的代码处理它-
Document dom = parser.getDocument();
NodeList collected_objects = dom.getElementsByTagName("object");
System.out.println("Number of collected objects are " + collected_objects.getLength());
for (int i = 0; i < collected_objects.getLength(); i++) {
Node aNode = collected_objects.item(i);
//get children of "objects"
NodeList refNodes = aNode.getChildNodes();
System.out.println("# of chidren are " + refNodes.getLength());
//print attributes of "objects"
NamedNodeMap attributes = aNode.getAttributes();
for (int a = 0; a < attributes.getLength(); a++) {
Node theAttribute = attributes.item(a);
System.out.println(theAttribute.getNodeName() + "=" + theAttribute.getNodeValue());
}
}
它输出为-
Number of collected objects are 2
# of chidren are 5
flag=complete
id=objId
version=1
# of chidren are 3
comment=objComment
flag=complete
id=objId
version=1
我的问题是为什么“#of children are”分别是 5 和 3?我不应该分别期待 2 和 1 吗?
因为第一个对象有“variable_value
”和“reference
”而第二个对象只有“reference
”
本质上,我的意图是处理“对象”的子项。
最佳答案
确保
测试是否
childNode.getNodeType() == Node.ELEMENT_NODE
应该足够了。
关于java - getChildNodes 给出意想不到的结果,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/8558709/