Java读取xml文件的四种方法

xml文件

Xml代码

<?xml version= encoding=GB?>

<RESULT>

<VALUE>

<NO>A</NO>

<ADDR>河南省郑州市</ADDR>

</VALUE>

<VALUE>

<NO>B</NO>

<ADDR>河南省郑州市二七区</ADDR>

</VALUE>

</RESULT>

第一种 DOM 实现方法

Java代码

import javaioFile;

import javaxxmlparsersDocumentBuilder;

import javaxxmlparsersDocumentBuilderFactory;

import orgwcdomDocument;

import orgwcdomNodeList;

public class MyXMLReaderDOM {

public static void main(String arge[]) {

long lasting = SystemcurrentTimeMillis();

try {

File f = new File(data_kxml);

DocumentBuilderFactory factory = DocumentBuilderFactorynewInstance();

DocumentBuilder builder = factorynewDocumentBuilder();

Document doc = builderparse(f);

NodeList nl = docgetElementsByTagName(VALUE);

for (int i = ; i < nlgetLength(); i++) {

Systemoutprint(车牌号码:+ docgetElementsByTagName(NOem(i)getFirstChild()getNodeValue());

Systemoutprintln(车主地址:+ docgetElementsByTagName(ADDRem(i)getFirstChild()getNodeValue());

Systemoutprintln(运行时间 + (SystemcurrentTimeMillis() lasting)

+ 毫秒);

}

}

} catch (Exception e) {

eprintStackTrace();

}

}

}

第二种DOMJ实现方法

Java代码

import javaio*;

import javautil*;

import orgdomj*;

import orgdomjio*;

public class MyXMLReaderDOMJ {

public static void main(String arge[]) {

long lasting = SystemcurrentTimeMillis();

try {

File f = new File(data_kxml);

SAXReader reader = new SAXReader();

Document doc = readerread(f);

Element root = docgetRootElement();

Element foo;

for (Iterator i = rootelementIterator(VALUE); ihasNext();) {

foo = (Element) inext();

Systemoutprint(车牌号码: + fooelementText(NO));

Systemoutprintln(车主地址: + fooelementText(ADDR));

}

Systemoutprintln(运行时间 + (SystemcurrentTimeMillis() lasting)

+ 毫秒);

}

} catch (Exception e) {

eprintStackTrace();

}

}

}

第三种 JDOM实现方法

Java代码

import javaio*;

import javautil*;

import orgjdom*;

import orgjdominput*;

public class MyXMLReaderJDOM {

public static void main(String arge[]) {

long lasting = SystemcurrentTimeMillis();

try {

SAXBuilder builder = new SAXBuilder();

Document doc = builderbuild(new File(data_kxml));

Element foo = docgetRootElement();

List allChildren = foogetChildren();

for (int i = ; i < allChildrensize(); i++) {

Systemoutprint(车牌号码:+ ((Element) allChildrenget(i))getChild(NO)getText());

Systemoutprintln(车主地址:+ ((Element) allChildrenget(i))getChild(ADDR)getText());

}

Systemoutprintln(运行时间 + (SystemcurrentTimeMillis() lasting)

+ 毫秒);

}

} catch (Exception e) {

eprintStackTrace();

}

}

}

第四种SAX实现方法

Java代码

import javaxxmlparsersSAXParser;

import javaxxmlparsersSAXParserFactory;

import orgxmlsaxAttributes;

import orgxmlsaxInputSource;

import orgxmlsaxSAXException;

import orgxmlsaxhelpersDefaultHandler;

public class MyXMLReaderSAX extends DefaultHandler {

javautilStack tags = new javautilStack();

public MyXMLReaderSAX() {

super();

}

public static void main(String args[]) {

long lasting = SystemcurrentTimeMillis();

try {

SAXParserFactory sf = SAXParserFactorynewInstance();

SAXParser sp = sfnewSAXParser();

MyXMLReaderSAX reader = new MyXMLReaderSAX();

spparse(new InputSource(data_kxml) reader);

} catch (Exception e) {

eprintStackTrace();

}

Systemoutprintln(运行时间 + (SystemcurrentTimeMillis() lasting)

+ 毫秒);

}

public void characters(char ch[] int start int length)

throws SAXException {

String tag = (String) tagspeek();

if (tagequals(NO)) {

Systemoutprint(车牌号码 + new String(ch start length));

}

if (tagequals(ADDR)) {

Systemoutprintln(地址: + new String(ch start length));

}

}

public void startElement(String uri String localName String qName

Attributes attrs) {

tagspush(qName);

}

}