我自己的写的:(假如我们现在xml是存在数据库的某一个字段中,先取出这个字符串也就是xml文件嘛,现在得到的这个xml是放在我们程序的一个String里面的)
//这里我们也知道xml文件格式撒:
StringReader reader = new StringReader(BackItemOrder_xml);
SAXBuilder sax = new SAXBuilder();
try {
org.jdom.Document document = sax.build(reader);
Element element = document.getRootElement();
OmsOrder omsOrder = getOmsOrderXml(element);
this.commonDao.store(omsOrder);
inter.setDealTime(new Date());
inter.setStatus("FINISHED");
this.commonDao.store(inter);
} catch (JDOMException e) {
inter.setDealTime(new Date());
inter.setResponseContent("单据类型为退货售后单的xml文件异常");
this.commonDao.store(inter);
e.printStackTrace();
}
public OmsOrder getOmsOrderXml(Element element){
OmsOrder omsOrder = new OmsOrder();
Element Twoelement = element.getChild("ReturnOrderReceiving");
List<Element> list = Twoelement.getChildren();
for(Element objElement : list){
if("OrderCode".equals(objElement.getName())){
omsOrder.setBillCode2(objElement.getText());
}
else if("ReturnCode".equals(objElement.getName())){
omsOrder.setBillCode1(objElement.getText());
}
else if("ReturnDate".equals(objElement.getName())){
omsOrder.setOrderDate( DateUtil.formatStrToDate(objElement.getText()));
}
else if("Name".equals(objElement.getName())){
omsOrder.setContactPerson(objElement.getText());
}
else if("TelePhone".equals(objElement.getName())){
omsOrder.setTelephone(objElement.getText());
}
else if("Province".equals(objElement.getName())){
omsOrder.setProvince(objElement.getText());
}
else if("City".equals(objElement.getName())){
omsOrder.setCity(objElement.getText());
}
else if("AreaCounty".equals(objElement.getName())){
omsOrder.setCounty(objElement.getText());
}
else if("Address".equals(objElement.getName())){
omsOrder.setStreet(objElement.getText());
}
}
return omsOrder;
}
然后下面这是网上copy的哈:
xml是一种广为使用的可扩展标记语言,java中解析xml的方式有很多,最常用的像jdom、dom4j、sax等等。前两天刚好有个程序需要解析xml,就学了下jdom,写了个小例子,这里做个学习笔记。
要使用jdom解析xml文件,需要下载jdom的包,我使用的是jdom-1.1。解压之后,将lib文件夹下的.jar文件以及build文件夹下的jdom.jar拷贝到工程文件夹下,然后就可以使用jdom操作xml文件了。
一、读取xml文件
假设有这样一个xml文件:
- <?xml version="1.0" encoding="UTF-8"?>
- <sys-config>
- <jdbc-info>
- <driver-class-name>oracle.jdbc.driver.OracleDriver</driver-class-name>
- <url>jdbc:oracle:thin:@localhost:1521:database</url>
- <user-name>why</user-name>
- <password>why</password>
- </jdbc-info>
- <provinces-info>
- <province id="hlj" name="黑龙江">
- <city id="harb">哈尔滨</city>
- <city id="nj">嫩江</city>
- </province>
- <province id="jl" name="吉林"></province>
- </provinces-info>
- </sys-config>
<?xml version="1.0" encoding="UTF-8"?> <sys-config> <jdbc-info> <driver-class-name>oracle.jdbc.driver.OracleDriver</driver-class-name> <url>jdbc:oracle:thin:@localhost:1521:database</url> <user-name>why</user-name> <password>why</password> </jdbc-info> <provinces-info> <province id="hlj" name="黑龙江"> <city id="harb">哈尔滨</city> <city id="nj">嫩江</city> </province> <province id="jl" name="吉林"></province> </provinces-info> </sys-config>
首先,用 org.jdom.input.SAXBuilder 这个类取得要操作的xml文件,会返回一个 org.jdom.Document 对象,这里需要做一下异常处理。然后,取得这个xml文件的根节点,org.jdom.Element 代表xml文件中的一个节点,取得跟节点后,便可以读取xml文件中的信息。利用 org.jdom.xpath.XPath 可以取得xml中的任意制定的节点中的信息。
例如,要取得上面文件中的 <jdbc-info> 下的 <driver-class-name> 中的内容,先取得这个节点Element driverClassNameElement = (Element)XPath.selectSingleNode(rootEle, "//sys-config/jdbc-info/driver-class-name"),注意,根节点前要使用两个 "/" ,然后,用 driverClassNameElement.getText() 便可以取得这个节点下的信息。
如果一个节点下有多个名称相同的子节点,可以用XPath.selectNodes()方法取得多个子节点的List,遍历这个List就可以操作各个子节点的内容了。
下面是我写的读取上面xml文件的例子,比起文字描述更直观一些吧:
- package com.why.jdom;
- import java.io.IOException;
- import java.util.Iterator;
- import java.util.List;
- import org.jdom.input.SAXBuilder;
- import org.jdom.xpath.XPath;
- import org.jdom.Document;
- import org.jdom.Element;
- import org.jdom.JDOMException;
- public class ReadXML {
- /**
- * @param args
- */
- public static void main(String[] args) {
- SAXBuilder sax = new SAXBuilder();
- try {
- Document doc = sax.build("src/config.xml");
- Element rootEle = doc.getRootElement();
- Element driverClassNameElement = (Element)XPath.selectSingleNode(rootEle, "//sys-config/jdbc-info/driver-class-name");
- String driverClassName = driverClassNameElement.getText();
- System.out.println("driverClassName = " + driverClassName);
- List provinceList = XPath.selectNodes(rootEle, "//sys-config/provinces-info/province");
- for(Iterator it = provinceList.iterator();it.hasNext();){
- Element provinceEle = (Element)it.next();
- String proId = provinceEle.getAttributeValue("id");
- String proName = provinceEle.getAttributeValue("name");
- System.out.println("provinceId = " + proId + " provinceName = " + proName);
- List cityEleList = (List)provinceEle.getChildren("city");
- for(Iterator cityIt = cityEleList.iterator();cityIt.hasNext();){
- Element cityEle = (Element)cityIt.next();
- String cityId = cityEle.getAttributeValue("id");
- String cityName = cityEle.getText();
- System.out.println(" cityId = " + cityId + " cityName = " + cityName);
- }
- }
- } catch (JDOMException e) {
- // TODO 自动生成 catch 块
- e.printStackTrace();
- } catch (IOException e) {
- // TODO 自动生成 catch 块
- e.printStackTrace();
- }
- }
- }
package com.why.jdom;
import java.io.IOException;
import java.util.Iterator;
import java.util.List;
import org.jdom.input.SAXBuilder;
import org.jdom.xpath.XPath;
import org.jdom.Document;
import org.jdom.Element;
import org.jdom.JDOMException;
public class ReadXML {
/**
* @param args
*/
public static void main(String[] args) {
SAXBuilder sax = new SAXBuilder();
try {
Document doc = sax.build("src/config.xml");
Element rootEle = doc.getRootElement();
Element driverClassNameElement = (Element)XPath.selectSingleNode(rootEle, "//sys-config/jdbc-info/driver-class-name");
String driverClassName = driverClassNameElement.getText();
System.out.println("driverClassName = " + driverClassName);
List provinceList = XPath.selectNodes(rootEle, "//sys-config/provinces-info/province");
for(Iterator it = provinceList.iterator();it.hasNext();){
Element provinceEle = (Element)it.next();
String proId = provinceEle.getAttributeValue("id");
String proName = provinceEle.getAttributeValue("name");
System.out.println("provinceId = " + proId + " provinceName = " + proName);
List cityEleList = (List)provinceEle.getChildren("city");
for(Iterator cityIt = cityEleList.iterator();cityIt.hasNext();){
Element cityEle = (Element)cityIt.next();
String cityId = cityEle.getAttributeValue("id");
String cityName = cityEle.getText();
System.out.println(" cityId = " + cityId + " cityName = " + cityName);
}
}
} catch (JDOMException e) {
// TODO 自动生成 catch 块
e.printStackTrace();
} catch (IOException e) {
// TODO 自动生成 catch 块
e.printStackTrace();
}
}
}
二、写xml文件
写xml文件与读取xml文件的操作类似,利用 org.jdom.output.XMLOutputter 就可以将处理好的xml输出到文件了。可以设置文件的编码方式,不过一般使用UTF-8就可以了。代码如下:
- import java.io.FileNotFoundException;
- import java.io.FileOutputStream;
- import java.io.IOException;
- import org.jdom.Document;
- import org.jdom.Element;
- import org.jdom.output.XMLOutputter;
- public class WriteXML {
- /**
- * @param args
- */
- public static void main(String[] args) {
- // TODO 自动生成方法存根
- Element rootEle = new Element("sys-config");
- Element provincesEle = new Element("provinces-info");
- Element provinceEle = new Element("province");
- provinceEle.setAttribute("id","hlj");
- provinceEle.setAttribute("name","黑龙江省");
- Element cityEle1 = new Element("city");
- cityEle1.setAttribute("id","harb");
- cityEle1.addContent("哈尔滨");
- Element cityEle2 = new Element("city");
- cityEle2.setAttribute("id","nj");
- cityEle2.addContent("嫩江");
- provinceEle.addContent(cityEle1);
- provinceEle.addContent(cityEle2);
- provincesEle.addContent(provinceEle);
- rootEle.addContent(provincesEle);
- Document doc = new Document(rootEle);
- XMLOutputter out = new XMLOutputter();
- // out.setFormat(Format.getCompactFormat().setEncoding("GBK"));//设置文件编码,默认为UTF-8
- String xmlStr = out.outputString(doc);
- System.out.println(xmlStr);
- try {
- out.output(doc, new FileOutputStream("c:/test.xml"));
- } catch (FileNotFoundException e) {
- // TODO 自动生成 catch 块
- e.printStackTrace();
- } catch (IOException e) {
- // TODO 自动生成 catch 块
- e.printStackTrace();
- }
- }
- }