通过dom4j解析xml字符串(示例代码)

复制代码 代码如下:
import java.util.Iterator;
import java.util.List;
import org.dom4j.Attribute;
import org.dom4j.document;
import org.dom4j.documentHelper;
import org.dom4j.Element;
public class Test {
 @SuppressWarnings("unchecked")
 public static void main(String[] args) throws Exception {
  String xml = " single_trade_query utf-8 2088001513232645 20090422577264 ";
  document document = documentHelper.parseText(xml);
  Element root = document.getRootElement();
  List elements = root.elements();
  for (Iterator it = elements.iterator(); it.hasNext();) {
   Element element = it.next();
   List attributes = element.attributes();
   for (int i = 0; i < attributes.size(); i++) {
    Attribute attribute = attributes.get(i);
    if ("service".equals(attribute.getText())) {
     System.out.println(element.getName() + "  :  "
       + element.getText());
    }
   }
  }
 }
}

或者：
复制代码 代码如下:
import java.io.StringReader;
import java.util.Iterator;
import java.util.List;
import org.dom4j.document;
import org.dom4j.Element;
import org.dom4j.io.SAXReader;
import org.xml.sax.InputSource;
public class Test {

 @SuppressWarnings("unchecked")
 public static void main(String[] args) throws Exception {
  String xml = "TestServletTestServlettest.TestServlet";
  InputSource in = new InputSource(new StringReader(xml));
  in.setEncoding("UTF-8");
  SAXReader reader = new SAXReader();
  document document = reader.read(in);
  Element root = document.getRootElement();
  List elements = root.elements();
  for(Iterator it = elements.iterator();it.hasNext();){
   Element element = it.next();
   System.out.println(element.getName()+" : "+element.getTextTrim());
  }

 }
}

或者增加ID属性，直接通过ID获取某个属性值：
复制代码 代码如下:
import java.io.StringReader;
import org.dom4j.document;
import org.dom4j.documentException;
import org.dom4j.Element;
import org.dom4j.io.SAXReader;
import org.xml.sax.InputSource;
public class Test {
    public static void main(String args[]) {
     String xml = " single_trade_query utf-8 2088001513232645 20090422577264 ";
     InputSource source = new InputSource(new StringReader(xml));
        SAXReader reader = new SAXReader();
        document document = null;
  try {
   document = reader.read(source);
  } catch (documentException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
  Element root = document.getRootElement();
        System.out.println(document.elementByID("tt").getTextTrim());
        System.out.println(root.elementByID("tt").getTextTrim());
    }
}

注意：通过ID获取，元素ID属性名必须为“大写ID”，小写的“id”会认为是普通属性！