XML读取数据

[jhon0409]

采用文件流怎样读取解析XML文档，最好有案例？

[zqfddqr]

dom4j 引用个开源项目即可

[wasdasdfqwer]

我这里有个dom4j的。jar包 dom4j1.6.1.jar。

import java.io.File; 
import java.io.FileWriter; 
import java.io.IOException; 
import java.io.Writer; 
import java.util.Iterator; 
 
import org.dom4j.Attribute; 
import org.dom4j.Document; 
import org.dom4j.DocumentException; 
import org.dom4j.DocumentHelper; 
import org.dom4j.Element; 
import org.dom4j.io.SAXReader; 
import org.dom4j.io.XMLWriter; 
 
/**
 * 用dom4j生成条形码的XML格式：
 * <barcodeInfo>
			<barcodeString>1231231</barcodeString> 
  			<writeTimeString>2012-3-13 13:23:32</writeTimeString> 
   </barcodeInfo>
 * @author wfg
 */
public class DOM4jXML { 
 
	
	
	/**
	 * 
	 * @param 文件名（XXX.xml）
	 * @param Str 字符串
	 * @param timeStr 时间字符串
	 */
	public static void createBarcodeXml(String fileName,String barcodeStr,String timeStr)  
    {    
        Document document = DocumentHelper.createDocument();  //创建文档   
        Element barcodeInfo=document.addElement("barcodeInfo");    
        Element barcodeString=barcodeInfo.addElement("barcodeString");
        Element writeTime=barcodeInfo.addElement("writeTimeString");
        barcodeString.setText(barcodeStr);
        writeTime.setText(timeStr);
        try {    
            Writer fileWriter=new FileWriter(fileName);    
            XMLWriter xmlWriter=new XMLWriter(fileWriter);    
            xmlWriter.write(document);   //写入文件中 
            xmlWriter.close();   
            } catch (IOException e) {    
                System.out.println(e.getMessage());    
            }    
    }    
	
   
     
    /**
     * 读取xml文件
     * @param fileName
     */ 
    void parserXml(String fileName)  
    {    
        File inputXml=new File(fileName);    
        SAXReader saxReader = new SAXReader();    
        try {    
            Document document = saxReader.read(inputXml);   //把文件读入到文档 
            Element barcodeInfo=document.getRootElement();   //获取文档根节点 
            this.doublexml(barcodeInfo); 
                
        } catch (DocumentException e) {    
            System.out.println(e.getMessage());    
        }    
    }    
     
     
    private void doublexml(Element ele) 
    { 
    	StringBuilder sb = new StringBuilder();
    	
        for(Iterator i = ele.elementIterator();i.hasNext();) 
        { 
            Element node = (Element)i.next(); 
            System.out.println("节点名:"+node.getName()); 
            String nodeName = node.getName();
            if(node.attributes()!=null && node.attributes().size()>0) 
            { 
                for(Iterator j = node.attributeIterator();j.hasNext();) 
                { 
                    Attribute item = (Attribute)j.next(); 
                    System.out.print("属性名："+item.getName()+"\t属性值："+item.getValue()+"\n"); 
                } 
            } 
            if(node.getText().length()>0) 
            { 
                System.out.println("节点值："+node.getText()); 
                String nodeText = node.getText();
            } 
            if(node.elementIterator().hasNext()) 
            { 
                this.doublexml(node); 
            } 
        }
    } 
     
    
} 

//测试用例：
               DOM4jXML demo = new DOM4jXML(); 
	        //写xml
	        demo.createBarcodeXml("f:/sa2.xml","1231231","2012-3-13 13:23:32"); 
	      //读xml
	        demo.parserXml("h:/test.xml"); 

其他的网上也有很多示例，你看看把

[菖蒲老先生]

查查 dom4j 或者 jdom