android sax创建xml文件

具体的如何使用sax创建xml，在程序中都加了相关的注释，还是直接上代码.

package cn.com.sax;    import java.io.OutputStream;  import java.io.StringWriter;    import javax.xml.transform.OutputKeys;  import javax.xml.transform.Result;  import javax.xml.transform.Transformer;  import javax.xml.transform.TransformerConfigurationException;  import javax.xml.transform.sax.SAXTransformerFactory;  import javax.xml.transform.sax.TransformerHandler;  import javax.xml.transform.stream.StreamResult;    import org.xml.sax.SAXException;  import org.xml.sax.helpers.AttributesImpl;    import android.util.Log;    class SxaCreateXml {  	/**  	 * SAX方式生成XML  	 *   	 * @param list  	 * @return  	 */  	public String saxToXml(OutputStream output) {  		String xmlStr = null;  		try {  			// 用来生成XML文件  			// 实现此接口的对象包含构建转换结果树所需的信息  			Result resultXml = new StreamResult(output);    			// 用来得到XML字符串形式  			// 一个字符流，可以用其回收在字符串缓冲区中的输出来构造字符串  			StringWriter writerStr = new StringWriter();  			// 构建转换结果树所需的信息。  			Result resultStr = new StreamResult(writerStr);    			// 创建SAX转换工厂  			SAXTransformerFactory sff = (SAXTransformerFactory) SAXTransformerFactory  					.newInstance();  			// 转换处理器，侦听 SAX ContentHandler  			// 解析事件，并将它们转换为结果树 Result  			TransformerHandler th = sff.newTransformerHandler();  			// 将源树转换为结果树  			Transformer transformer = th.getTransformer();  			// 设置字符编码  			transformer.setOutputProperty(OutputKeys.ENCODING, "UTF-8");  			// 是否缩进  			transformer.setOutputProperty(OutputKeys.INDENT, "yes");    			// 设置与用于转换的此 TransformerHandler 关联的 Result  			// 注：这两个th.setResult不能同时启用  			 th.setResult(resultXml);  //			 th.setResult(resultStr);  			//创建根元素<calsses>,并设置其属性为空  			th.startDocument();  			AttributesImpl attr = new AttributesImpl();  			th.startElement("", "calsses", "calsses", attr);  			  			//创建一级子元素<group>,并设置其属性  			attr.clear();  			attr.addAttribute("","name", "name", "", "一年级");  			attr.addAttribute("","num", "num", "", "10");  			th.startElement("", "", "group", attr);  			//创建二级子元素<person>,并设置其属性  			attr.clear();  			attr.addAttribute("","name", "name", "", "小明");  			attr.addAttribute("","age", "age", "", "7");  			th.startElement("", "", "person", attr);  			//创建三级子元素<chinese>,并设置其值  			attr.clear();  			th.startElement("", "", "chinese", attr);  			th.characters("语文90".toCharArray(), 0, "语文90".length());  			th.endElement("", "", "chinese");  			//创建三级子元素<english>,并设置其值  			th.startElement("", "", "english", attr);  			th.characters("英语80".toCharArray(), 0, "英语80".length());  			th.endElement("", "", "english");  			  			th.endElement("", "", "person");  			th.endElement("", "", "group");  			th.endElement("", "calsses", "calsses");  			th.endDocument();  			xmlStr = writerStr.getBuffer().toString();  		} catch (TransformerConfigurationException e) {  			Log.e("TEST", ""+e.toString());  		} catch (SAXException e) {  			Log.e("TEST", ""+e.toString());  		} catch (Exception e) {  			Log.e("TEST", ""+e.toString());  		}  		Log.e("TEST","生成的"+xmlStr);  		return xmlStr;  	}  }

调用这个方法即可实现创建xml文件的目的。

new SxaCreateXml().saxToXml(openFileOutput("sax.xml",  Context.MODE_PRIVATE));

<?xml version="1.0" encoding="UTF-8"?>

<calsses>  <group name="一年级" num="10">  <person name="小明" age="7">  <chinese>语文90</chinese>  <english>英语80</english>  </person>  </group>  </calsses>

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