java dom4j解析xml实例(3)

代码运行前需要先导入dom4j架包。

需要解析的XML文件test.xml如下：

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<students>      <student age="25"><!--如果没有age属性，默认的为20-->          <name>崔卫兵</name>          <college>PC学院</college>          <telephone>62354666</telephone>          <notes>男,1982年生,硕士，现就读于北京邮电大学</notes>     </student>      <student age="26">          <name>cwb</name>          <college leader="学院领导">PC学院</college><!--如果没有leader属性，默认的为leader-->         <telephone>62358888</telephone>          <notes>男,1987年生,硕士，现就读于中国农业大学</notes>      </student> </students>

 

<1>、当测试文件test.xml在D盘时，Java程序代码如下：

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package Test01;   import java.io.FileNotFoundException; import java.util.Iterator; import org.dom4j.Document; import org.dom4j.DocumentException; import org.dom4j.Element; import org.dom4j.io.SAXReader;   public class test01 {         public void testRead() throws DocumentException, FileNotFoundException{         SAXReader reader=new SAXReader();           Document doc=reader.read("D:/test.xml");         Element root =doc.getRootElement();         for(@SuppressWarnings("rawtypes")         Iterator it=root.elementIterator();it.hasNext();){             Element element=(Element)it.next();               System.out.println(element.attribute("age").getName()+" == "+element.attribute("age").getValue());             System.out.println(element.attributeValue("age"));             System.out.println(element.getName());             for(@SuppressWarnings("rawtypes")             Iterator itt=element.elementIterator();itt.hasNext();){                 //System.out.println(element.attributeValue("age"));                 Element el=(Element)itt.next();                 System.out.println(el.getName()+"=="+el.getText());                  //getText()获取的是两个标签间的数据如"<name>崔卫兵</name>"中的崔卫兵                 //getName()获取的是标签名，即“<student age="25"><name>崔卫兵</name>”中的age和name                 //attributeValue("age")可获取age的值即25             }             System.out.println("==================");                   }     }           public static void main(String[] args){         try {             new test01().testRead();         } catch (Exception e) {             // TODO Auto-generated catch block             e.printStackTrace();         }     } }

 

代码运行后控制台显示结果如下：

 

<2>、当测试文件test.xml和项目在一起时，Java程序代码如下：

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package Test01;   import java.io.FileNotFoundException; import java.util.Iterator; import org.dom4j.Document; import org.dom4j.DocumentException; import org.dom4j.Element; import org.dom4j.io.SAXReader;   public class test01 {         public static void testRead(String path) throws DocumentException, FileNotFoundException{         SAXReader reader=new SAXReader();           //Document doc=reader.read("D:/test.xml");         Document doc = reader.read(path);         Element root =doc.getRootElement();         for(@SuppressWarnings("rawtypes")         Iterator it=root.elementIterator();it.hasNext();){             Element element=(Element)it.next();               System.out.println(element.attribute("age").getName()+" == "+element.attribute("age").getValue());             System.out.println(element.attributeValue("age"));             System.out.println(element.getName());             for(@SuppressWarnings("rawtypes")             Iterator itt=element.elementIterator();itt.hasNext();){                 //System.out.println(element.attributeValue("age"));                 Element el=(Element)itt.next();                 System.out.println(el.getName()+"=="+el.getText());                  //getText()获取的是两个标签间的数据如"<name>崔卫兵</name>"中的崔卫兵                 //getName()获取的是标签名，即“<student age="25"><name>崔卫兵</name>”中的age和name                 //attributeValue("age")可获取age的值即25             }             System.out.println("==================");                   }     }           public static void main(String[] args){ //      try { //          new test01().testRead(); //      } catch (Exception e) { //          // TODO Auto-generated catch block //          e.printStackTrace(); //      }         try {             testRead("test.xml");         } catch (FileNotFoundException e) {             // TODO Auto-generated catch block             e.printStackTrace();         } catch (DocumentException e) {             // TODO Auto-generated catch block             e.printStackTrace();         }     } }

 

代码运行后控制台显示结果如下：