【Android】创建、读取XML文件

创建：

package webdomain;



import java.io.File;

import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.InputStream;

import java.io.OutputStream;

import java.io.OutputStreamWriter;

import java.io.StringWriter;

import java.text.SimpleDateFormat;

import java.util.ArrayList;

import java.util.List;



import javax.xml.parsers.DocumentBuilder;

import javax.xml.parsers.DocumentBuilderFactory;





import org.w3c.dom.Document;

import org.w3c.dom.Element;

import org.w3c.dom.Node;

import org.w3c.dom.NodeList;

import org.xmlpull.v1.XmlPullParserFactory;

import org.xmlpull.v1.XmlSerializer;



import form.FrmLogin;

import form.FrmShintai;







import android.os.Environment;

import android.util.Log;

import android.util.Xml;

import android.widget.ArrayAdapter;

 

public class Java2XML { 



public static void XmlFileCreator(String abc){

        File newxmlfile = new File(FrmLogin.SDCARD_PATH+"***");

        try{

            if(!newxmlfile.exists())

                newxmlfile.createNewFile();

        }catch(IOException e){

            Log.e("IOException", "exception in createNewFile() method");

        }

        //bind the new file with a FileOutputStream

        FileOutputStream fileos = null;        

        try{

            fileos = new FileOutputStream(newxmlfile);

        }catch(FileNotFoundException e){

            Log.e("FileNotFoundException", "can't create FileOutputStream");

        }

        // create a XmlSerializer in order to write xml data

        XmlSerializer serializer = Xml.newSerializer();

        try {

            //we set the FileOutputStream as output for the serializer, using UTF-8 encoding

            serializer.setOutput(fileos, "UTF-8");

            //Write <?xml declaration with encoding (if encoding not null) and standalone flag (if standalone not null)

            serializer.startDocument(null, null);

            //set indentation option

            serializer.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true);

            

            serializer.startTag(null, "jokes");

            serializer.startTag(null, "tag");

            serializer.startTag(null, "123");

                serializer.text(FrmS.G_Itmho.getText().toString());

                serializer.endTag(null, "123");

                                   

                serializer.startTag(null, "456");

                serializer.text(FrmS.G_Itmu.getText().toString());

                serializer.endTag(null, "456");

               

                serializer.startTag(null, "789");

                serializer.text(FrmSai.G_Itm.getText().toString());

                serializer.endTag(null, "789");

                serializer.endTag(null, "tag");

            serializer.endTag(null, "jokes");

            

            serializer.endDocument();

            serializer.flush();

            fileos.close();

        } catch (Exception e) {

            Log.e("Exception","error occurred while creating xml file");

        }

    }





}

 

读取：

package xmldomain;



import java.io.File;

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.InputStream;

import java.util.ArrayList;

import java.util.List;



import javax.xml.parsers.DocumentBuilder;

import javax.xml.parsers.DocumentBuilderFactory;

import javax.xml.parsers.ParserConfigurationException;



import org.kobjects.util.Strings;

import org.w3c.dom.Document;

import org.w3c.dom.Element;

import org.w3c.dom.Node;

import org.w3c.dom.NodeList;

import org.xml.sax.SAXException;



import android.R.string;







import form.FrmLogin;

import form.FrmShintai;



public class ReadXML {

public static  void ReadXMLs()

{

File newxmlfile = new File(FrmLogin.SDCARD_PATH+"filepath");

FileInputStream fileos = null;

try {

fileos = new FileInputStream(newxmlfile);

} catch (FileNotFoundException e1) {

// TODO Auto-generated catch block

e1.printStackTrace();

}

DocumentBuilderFactory docBuilderFactory = null;

DocumentBuilder docBuilder = null;

Document doc = null;

try{

docBuilderFactory =DocumentBuilderFactory.newInstance();

docBuilder =docBuilderFactory.newDocumentBuilder();

//xml file 

doc = docBuilder.parse(fileos);

//root element

Element root = doc.getDocumentElement();

//Do something here

//Get a NodeList by tagname

NodeList shenchang = root.getElementsByTagName_r("123");

Node nd  = shenchang.item(0);

FrmShintai.G_ItmZenkaiShincho.setText(nd.getTextContent());

//Read Node

NodeList tizhong = root.getElementsByTagName_r("456");

Node nd1  = tizhong.item(0);

FrmShintai.G_ItmZenkaiTaiju.setText(nd1.getTextContent());

//Read Node

NodeList bmi = root.getElementsByTagName_r("789");

Node nd2  = bmi.item(0);

FrmShintai.G_ItemZenkaiBMI.setText(nd2.getTextContent());

//Read Node2

}catch(IOException e){

}catch(SAXException e){

}catch(ParserConfigurationException e){

}finally{

doc =null;

docBuilder=null;

docBuilderFactory=null;

}

}

}