java读取xml文件内容

2025-02-22 15:36:52
推荐回答(5个)
回答1:

java中不是有个读取xml文件的类吗?之间调用那类读取出来,然后用取节点的方法去取对应节点的里的值。等下给你代码。

public class ReaderXml {
private static String filename = "E:\\workplace\\readerxml\\bin\\reader\\xml\\reader.xml";
// private static Config config;
public static void main(String []args) throws Exception{
//这里用反射机制
DocumentBuilderFactory domfac=DocumentBuilderFactory.newInstance();
DocumentBuilder dombuilder=domfac.newDocumentBuilder();
//读取文件流
InputStream is=new FileInputStream(filename);
Document doc=dombuilder.parse(is);
Element root=doc.getDocumentElement();
//获取所有xml节点
NodeList dbinfo=root.getChildNodes();
if(dbinfo!=null){
for(int i=0;i //获取节点判断
Node db=dbinfo.item(i);
//如果是Hardwares节点,也就是你xml文件的最顶处的节点
if(db.getNodeName().equals("Hardwares")){
//获取第二个节点包含的所有节点
NodeList list=db.getChildNodes();
for(int y=0;y Node n=list.item(y);
//如果节点等于Hardware
if(n.getNodeName().equals("Hardware")){
//获取Hardware节点中的所有节点
NodeList CnodeList=n.getChildNodes();
//取出Hardware里面的所有节点
for(int k=0;k //取出节点
Node cn=CnodeList.item(k);
//去掉里面的#text文件节点。没用,这个不是你配置的节点,应该是xml文件隐藏的

if(!cn.getNodeName().equals("#text")){
//打印你所配置的所有节点 System.out.println("node["+k+"]="+cn.getNodeName()+" nodeValue["+k+"]="+cn.getTextContent());
}
}
}

}
}
}
}
}
}
//具体你要干嘛自己弄了!

回答2:

import java.io.*;
import javax.xml.parsers.DocumentBuilder;
import
javax.xml.parsers.DocumentBuilderFactory;
import
org.w3c.dom.Document;
import org.w3c.dom.Element;
import
org.w3c.dom.Node;
import org.w3c.dom.NodeList;

public class XMLReaderTest {

public static void main(String args[]) {
Element element =
null;
// 可以使用绝对路劲
File f = new File("test.xml");

// documentBuilder为抽象不能直接实例化(将XML文件转换为DOM文件)
DocumentBuilder db =
null;
DocumentBuilderFactory dbf = null;
try {
//
返回documentBuilderFactory对象
dbf =
DocumentBuilderFactory.newInstance();
//
返回db对象用documentBuilderFatory对象获得返回documentBuildr对象
db =
dbf.newDocumentBuilder();

// 得到一个DOM并返回给document对象
Document dt = db.parse(f);
//
得到一个elment根元素
element = dt.getDocumentElement();
//
获得根节点
System.out.println("根元素:" + element.getNodeName());

// 获得根元素下的子节点
NodeList childNodes = element.getChildNodes();

// 遍历这些子节点
for (int i = 0; i < childNodes.getLength(); i++)
{
// 获得每个对应位置i的结点
Node node1 = childNodes.item(i);
if
("Account".equals(node1.getNodeName())) {
//
如果节点的名称为"Account",则输出Account元素属性type
System.out.println("\r\n找到一篇账号.
所属区域: " + node1.getAttributes().getNamedItem("type").getNodeValue() + ".
");
// 获得下的节点
NodeList nodeDetail =
node1.getChildNodes();
// 遍历下的节点
for (int j = 0;
j < nodeDetail.getLength(); j++) {
//
获得元素每一个节点
Node detail = nodeDetail.item(j);
if
("code".equals(detail.getNodeName())) //
输出code
System.out.println("卡号: " +
detail.getTextContent());
else if ("pass".equals(detail.getNodeName()))
// 输出pass
System.out.println("密码: " +
detail.getTextContent());
else if ("name".equals(detail.getNodeName()))
// 输出name
System.out.println("姓名: " +
detail.getTextContent());
else if
("money".equals(detail.getNodeName())) //
输出money
System.out.println("余额: " +
detail.getTextContent());
}
}

}
}

catch (Exception e) {
e.printStackTrace();
}
}
}

回答3:

用dom4j取出数据,如下是代码块

import java.util.List;
import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.Element;
import org.dom4j.io.SAXReader;

public class XMLPaser {
public static void main(String[] args) {
paserXML();
}

public static void paserXML(){
SAXReader reader = new SAXReader();
try {
// 读取XML文件
Document doc = reader.read("*******.xml");
Element root = doc.getRootElement();
System.out.println(root.getName());
List param = root.elements();
for (Element element : param) {
if(element.attributeValue("OSType").equals("a")){
System.out.println(element.getText());
}
}
} catch (DocumentException e) {
e.printStackTrace();
}
}
}

详情搜索一下dom4j的使用方法。可以直接取出节点的内容,使用element.attributeValue("OSType")取出OS1和OS2
稍微对比一下就可以

不然就直接用substring方法一个个截取吧,自己写很容易出错的。

回答4:

						XMLStreamReader reader = inputFactory.createXMLStreamReader(new FileInputStream(new File("xmlPath")));//这里可以替换成一个流
List> dataList = new ArrayList>();
while (reader.hasNext()) {
int event = reader.next();
if (event == XMLStreamConstants.START_ELEMENT) {
//这里获取你的节点名称
if (reader.getName().equals("Hardware")) {
int attrCount = reader.getAttributeCount();
Map dataMap = new HashMap();

for (int i = 0; i < attrCount; i++) {
String attrName = reader.getAttributeLocalName(i);
String attrValue = reader.getAttributeValue(i);
// System.out.println("----attrname: "+attrName);
// System.out.println("----attrvalue: "+attrValue);
dataMap.put(attrName, attrValue);
}
dataList.add(dataMap);
}
}
}

回答5:

用dom4j可以读取的,你用嵌套遍历节点的方式应该可以读取到所有节点。

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