Java 利用dom方式读取、创建xml详解及实例代码
Java利用dom方式读取、创建xml详解
1.创建一个接口
XmlInterface.Java
publicinterfaceXmlInterface
{
/**
*
建立XML文档
*
@paramfileName文件全路径名称
*/
publicvoidcreateXml(String
fileName);
/**
*
解析XML文档
*
@paramfileName文件全路径名称
*/
publicvoidparserXml(String
fileName);
}
接口实现
XmlImpl.java
packagecom.test.xml;
importjava.io.FileNotFoundException;
importjava.io.FileOutputStream;
importjava.io.IOException;
importjava.io.PrintWriter;
importjavax.xml.parsers.DocumentBuilder;
importjavax.xml.parsers.DocumentBuilderFactory;
importjavax.xml.parsers.ParserConfigurationException;
importjavax.xml.transform.OutputKeys;
importjavax.xml.transform.Transformer;
importjavax.xml.transform.TransformerConfigurationException;
importjavax.xml.transform.TransformerException;
importjavax.xml.transform.TransformerFactory;
importjavax.xml.transform.dom.DOMSource;
importjavax.xml.transform.stream.StreamResult;
importorg.w3c.dom.Document;
importorg.w3c.dom.Element;
importorg.w3c.dom.Node;
importorg.w3c.dom.NodeList;
importorg.xml.sax.SAXException;
publicclassXmlImplimplementsXmlInterface{
privateDocument
document;
publicvoidinit()
{
try{
DocumentBuilderFactory
factory=DocumentBuilderFactory
.newInstance();
DocumentBuilder
builder=factory.newDocumentBuilder();
this.document
=builder.newDocument();
}catch(ParserConfigurationException
e){
System.out.println(e.getMessage());
}
}
publicvoidcreateXml(String
fileName){
Element
root=this.document.createElement("scores");
this.document.appendChild(root);
Element
employee=this.document.createElement("employee");
Element
name=this.document.createElement("name");
name.appendChild(this.document.createTextNode("wangchenyang"));
employee.appendChild(name);
Element
sex=this.document.createElement("sex");
sex.appendChild(this.document.createTextNode("m"));
employee.appendChild(sex);
Element
age=this.document.createElement("age");
age.appendChild(this.document.createTextNode("26"));
employee.appendChild(age);
root.appendChild(employee);
TransformerFactory
tf=TransformerFactory.newInstance();
try{
Transformer
transformer=tf.newTransformer();
DOMSource
source=newDOMSource(document);
transformer.setOutputProperty(OutputKeys.ENCODING,"gb2312");
transformer.setOutputProperty(OutputKeys.INDENT,"yes");
PrintWriter
pw=newPrintWriter(newFileOutputStream(fileName));
StreamResult
result=newStreamResult(pw);
transformer.transform(source,
result);
System.out.println("生成XML文件成功!");
}catch(TransformerConfigurationException
e){
System.out.println(e.getMessage());
}catch(IllegalArgumentException
e){
System.out.println(e.getMessage());
}catch(FileNotFoundException
e){
System.out.println(e.getMessage());
}catch(TransformerException
e){
System.out.println(e.getMessage());
}
}
publicvoidparserXml(String
fileName){
try{
DocumentBuilderFactory
dbf=DocumentBuilderFactory.newInstance();
DocumentBuilder
db=dbf.newDocumentBuilder();
Document
document=db.parse(fileName);
NodeList
employees=document.getChildNodes();
for(inti
=0;
i
测试
publicclassMain
{
publicstaticvoidmain(String
args[]){
XmlImpl
dd=newXmlImpl();
String
str="D:/grade.xml";
dd.init();
dd.createXml(str);//创建xml
dd.parserXml(str);//读取xml
}
}
结果
生成xml
wangchenyang
m
26
读取xml
生成XML文件成功!
#text:
name:wangchenyang
#text:
sex:m
#text:
age:26
#text:
解析完毕
感谢阅读，希望能帮到大家，谢谢大家对本站的支持！