【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 blocke1.printStackTrace();}DocumentBuilderFactory docBuilderFactory = null;DocumentBuilder docBuilder = null;Document doc = null;try{docBuilderFactory =DocumentBuilderFactory.newInstance();docBuilder =docBuilderFactory.newDocumentBuilder();//xml file doc = docBuilder.parse(fileos);//root elementElement root = doc.getDocumentElement();//Do something here//Get a NodeList by tagnameNodeList shenchang = root.getElementsByTagName_r("123");Node nd  = shenchang.item(0);FrmShintai.G_ItmZenkaiShincho.setText(nd.getTextContent());//Read NodeNodeList tizhong = root.getElementsByTagName_r("456");Node nd1  = tizhong.item(0);FrmShintai.G_ItmZenkaiTaiju.setText(nd1.getTextContent());//Read NodeNodeList 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;}}}

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