android json与xml解析 例子

啥也不说了直接贴代码呃。

JSON解析：

import java.io.IOException;import java.util.ArrayList;import java.util.List;import net.wasay.android.client.model.HomeMsg;import org.apache.http.HttpResponse;import org.apache.http.HttpStatus;import org.apache.http.client.ClientProtocolException;import org.apache.http.client.HttpClient;import org.apache.http.client.methods.HttpGet;import org.apache.http.impl.client.DefaultHttpClient;import org.apache.http.util.EntityUtils;import org.json.JSONArray;import org.json.JSONException;import org.json.JSONObject;import org.json.JSONTokener;import android.util.Log;public class JsonParser {/** * 通过URL从服务器上下载下来，保存为字符串，以便待会进行JSON解析 * @param strUrl  * @return */public static String connServerForResult(String strUrl) {// HttpGet对象HttpGet httpRequest = new HttpGet(strUrl);String strResult = "";try {// HttpClient对象HttpClient httpClient = new DefaultHttpClient();// 获得HttpResponse对象HttpResponse httpResponse = httpClient.execute(httpRequest);// 当返回码为200时，做处理  得到服务器端返回json数据，并做处理 if (httpResponse.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {// 取得返回的数据strResult = EntityUtils.toString(httpResponse.getEntity());//System.out.println(strResult);}} catch (ClientProtocolException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}return strResult;}/** * 普通Json数据解析  （这只是测试类，根据下载的JSON格式进行变化） * @param strResult 从URL中得到的字符串 */public static void parseJson(String strResult) {try {JSONObject jsonObj = new JSONObject(strResult).getJSONObject("singer");int id = jsonObj.getInt("id");String name = jsonObj.getString("name");String gender = jsonObj.getString("gender");Log.e("Test", id + "," + name + ";" + gender);} catch (JSONException e) {System.out.println("Json parse error");e.printStackTrace();}}/** * blogs列表JSON转换 * 带数组的JSON数据转换   * @param strResult 从URL中转换过来的字符串 */// 要转换的格式如下

{"status":0,"result":[{"guid":"1278","owner_guid":"35","time":"2012-03-11 14:27:33","title":"1111", // "description":"11111","subtype":"blog","entityurl":"http:\/\/wasay2.sinaapp.com\/blog\/view\/1278","name":"admin","userurl":"http:\/\/wasay2.sinaapp.com\/profile\/admin"}}

public static List<HomeMsg> parseJsons(String strResult) {List<HomeMsg> blogs = new ArrayList<HomeMsg>();try {JSONTokener tokener = new JSONTokener(strResult);JSONObject j = (JSONObject)tokener.nextValue();int status = j.getInt("status");JSONArray jsonObjs = j.getJSONArray("result");if (0 == status) { // 0：正常返回； -1：出错for (int i = 0; i < jsonObjs.length(); i++) {// 封装数据

HomeMsg blog = new HomeMsg();JSONObject jsonObj = ((JSONObject) jsonObjs.opt(i));blog.setGuid(jsonObj.getInt("guid"));blog.setOwnerGuid(jsonObj.getInt("owner_guid"));blog.setTime(jsonObj.getString("time"));blog.setTitle(jsonObj.getString("title"));blog.setDescription(jsonObj.getString("description"));blog.setSubType(jsonObj.getString("subtype"));blog.setEntityUrl(jsonObj.getString("entityurl"));blog.setName(jsonObj.getString("name"));blog.setUserUrl(jsonObj.getString("userurl"));blogs.add(blog);}}} catch (JSONException e) {System.out.println("Jsons parse error !");e.printStackTrace();} catch (Exception e1) {e1.printStackTrace();}return blogs;}}

XML解析 DOM：

import java.io.FileNotFoundException;import java.io.IOException;import javax.xml.parsers.DocumentBuilder;import javax.xml.parsers.DocumentBuilderFactory;import javax.xml.parsers.ParserConfigurationException;import org.w3c.dom.Document;import org.w3c.dom.Node;import org.w3c.dom.NodeList;import org.xml.sax.SAXException;public class XmlDomParser {/** *  解析XML文档  * @param fileName 文件全路径名称  */public static void parserXml(String fileName) {try {DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();DocumentBuilder db = dbf.newDocumentBuilder();Document document = db.parse(fileName);NodeList employees = document.getChildNodes();for (int i = 0; i < employees.getLength(); i++) {Node employee = employees.item(i);NodeList employeeInfo = employee.getChildNodes();for (int j = 0; j < employeeInfo.getLength(); j++) {Node node = employeeInfo.item(j);NodeList employeeMeta = node.getChildNodes();for (int k = 0; k < employeeMeta.getLength(); k++) {if (!"#text".equals(employeeMeta.item(k).getNodeName())) {System.out.println(employeeMeta.item(k).getNodeName()+ ":" + (employeeMeta.item(k)).getTextContent());}}}}System.out.println("解析完毕");} catch (FileNotFoundException e) {System.out.println(e.getMessage());} catch (ParserConfigurationException e) {System.out.println(e.getMessage());} catch (SAXException e) {System.out.println(e.getMessage());} catch (IOException e) {System.out.println(e.getMessage());}}}

XMl SAX 解析 ：

package net.wasay.android.client.parser;import java.io.FileInputStream;import java.io.FileNotFoundException;import java.io.IOException;import java.io.InputStream;import javax.xml.parsers.ParserConfigurationException;import javax.xml.parsers.SAXParser;import javax.xml.parsers.SAXParserFactory;import org.xml.sax.Attributes;import org.xml.sax.SAXException;import org.xml.sax.helpers.DefaultHandler;/** * 优点：不用事先调入整个文档，占用资源少；SAX解析器代码比DOM解析器代码小，适于Applet，下载。 * 缺点：不是持久的；事件过后，若没保存数据，那么数据就丢了；无状态性；从事件中只能得到文本， * 但不知该文本属于哪个元素； * 使用场合：Applet;只需XML文档的少量内容，很少回头访问；机器内存少；  * @author wangbin * SAX文档解析  */public class XmlSaxParser {/** *  解析XML文档  * @param fileName 文件全路径名称  *  */public static void parserXml(String fileName) {SAXParserFactory saxfac = SAXParserFactory.newInstance();try {SAXParser saxparser = saxfac.newSAXParser();InputStream is = new FileInputStream(fileName);saxparser.parse(is, new MySAXHandler());} catch (ParserConfigurationException e) {e.printStackTrace();} catch (SAXException e) {e.printStackTrace();} catch (FileNotFoundException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}}}class MySAXHandler extends DefaultHandler {boolean hasAttribute = false;Attributes attributes = null;public void startDocument() throws SAXException {System.out.println("startDocument");}public void endDocument() throws SAXException {System.out.println("endDocument");}public void startElement(String uri, String localName, String qName,Attributes attributes) throws SAXException {if (qName.equals("employees")) {return;}if (qName.equals("employee")) {System.out.println(qName);}if (attributes.getLength() > 0) {this.attributes = attributes;this.hasAttribute = true;}}public void endElement(String uri, String localName, String qName)throws SAXException {if (hasAttribute && (attributes != null)) {for (int i = 0; i < attributes.getLength(); i++) {System.out.println(attributes.getQName(0)+ attributes.getValue(0));}}}public void characters(char[] ch, int start, int length)throws SAXException {System.out.println(new String(ch, start, length));}}