java读取xml时输出错误 [英] Wrong output while reading xml by java

问题描述

我的xml文件包含：

My xml file contains :

<?xml version="1.0" encoding="UTF-8"?>
<Contacts>
    <ContactGroup1>
        <person>
            <name>Raj</name>
            <emailid>[e-mail]</emailid>
        </person>
    </ContactGroup1>  
</Contacts>

我试图通过以下java代码来阅读：

I am trying to read this by following java code :

DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder dBuilder = dbFactory.newDocumentBuilder();
Document doc = (Document) dBuilder.parse(fXmlFile);
doc.getDocumentElement().normalize();

System.out.println("Root element :" + doc.getDocumentElement().getNodeName());

NodeList nList = doc.getElementsByTagName("ContactGroup1");
Node nNode = nList.item(0);//take first cgroup
NodeList nl = (nNode.getChildNodes());
System.out.println("nodes in ContactGroup1 : " + nl.getLength());
for (int i = 0; i < nl.getLength(); i++) {
    Node node = nl.item(i);
    System.out.println("node type is " + node.getNodeType() + " " + node.getNodeName());
 }

输出为：

The output is :

Root element :Contacts
nodes in ContactGroup1 : 3
node type is 3 #text
node type is 1 person
node type is 3 #text

< br $>


但是在ContactGroup1中只有一个节点（即人），不是吗？

为什么输出错误？我该怎么做才能使它正确？

But in ContactGroup1 there is only one node (ie person), isn''t it?
Why this wrong output? What can I do to get it correct?

推荐答案

我将xml更改为：

I changed xml to :

<?xml version="1.0" encoding="UTF-8"?>
<Contacts>
    <ContactGroup1><person>
            <name>Aghil</name>
            <emailid>[e-mail]</emailid>
        </person></ContactGroup1>
</Contacts>

现在还可以。

And now its OK.

使用DTD验证，解析器会自动抑制元素之间的空白。

With DTD validationthe parser automatically suppress the whitespace between elements.

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