androd Josn

public static JSONObject getJSON(Map map) {
	Iterator iter = map.entrySet().iterator();
	JSONObject holder = new JSONObject();
	while (iter.hasNext()) {
		Map.Entry pairs = (Map.Entry) iter.next();
		String key = (String) pairs.getKey();
		Map m = (Map) pairs.getValue();
		JSONObject data = new JSONObject();
		try {
			Iterator iter2 = m.entrySet().iterator();
			while (iter2.hasNext()) {
				Map.Entry pairs2 = (Map.Entry) iter2.next();
				data.put((String) pairs2.getKey(), (String) pairs2
						.getValue());
			}
			holder.put(key, data);
		} catch (JSONException e) {
			Log.e("Transforming", "There was an error packaging JSON", e);
		}
	}
	return holder;
}

import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import java.net.*;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.json.JSONArray;
import org.json.JSONObject;
import android.util.Log;

public class JSON {

	
	/**
	 * 获取"数组形式"的JSON数据，
	 * 数据形式：[{"id":1,"name":"小猪"},{"id":2,"name":"小猫"}]
	 * @param path	网页路径
	 * @return	返回List
	 * @throws Exception
	 */
	public static List<Map<String, String>> getJSONArray(String path) throws Exception {
		String json = null;
		List<Map<String, String>> list = new ArrayList<Map<String, String>>();
		Map<String, String> map = null;
		URL url = new URL(path);
		HttpURLConnection conn = (HttpURLConnection) url.openConnection();// 利用HttpURLConnection对象,我们可以从网络中获取网页数据.
		conn.setConnectTimeout(5 * 1000); 	// 单位是毫秒，设置超时时间为5秒
		conn.setRequestMethod("GET");		// HttpURLConnection是通过HTTP协议请求path路径的，所以需要设置请求方式,可以不设置，因为默认为GET
		if (conn.getResponseCode() == 200) {// 判断请求码是否是200码，否则失败
			InputStream is = conn.getInputStream(); // 获取输入流
			byte[] data = readStream(is); 	// 把输入流转换成字符数组
			json = new String(data); 		// 把字符数组转换成字符串
			
			//数据形式：[{"id":1,"name":"小猪","age":22},{"id":2,"name":"小猫","age":23}]
			JSONArray jsonArray = new JSONArray(json); //数据直接为一个数组形式，所以可以直接 用android提供的框架JSONArray读取JSON数据，转换成Array

			for (int i = 0; i < jsonArray.length(); i++) {
				JSONObject item = jsonArray.getJSONObject(i); //每条记录又由几个Object对象组成
				int id = item.getInt("id"); 	// 获取对象对应的值
				String name = item.getString("name");

				map = new HashMap<String, String>(); // 存放到MAP里面
				map.put("id", id + "");
				map.put("name", name);
				list.add(map);
			}
		}

		// ***********测试数据******************
		for (Map<String, String> list2 : list) {
			String id = list2.get("id");
			String name = list2.get("name");
			Log.i("abc", "id:" + id + " | name:" + name);
		}

		return list;
	}

	/**
	 * 获取"对象形式"的JSON数据，
	 * 数据形式：{"total":2,"success":true,"arrayData":[{"id":1,"name":"小猪"},{"id":2,"name":"小猫"}]}
	 * @param path	网页路径
	 * @return	返回List
	 * @throws Exception
	 */
	public static List<Map<String, String>> getJSONObject(String path) throws Exception {
		List<Map<String, String>> list = new ArrayList<Map<String, String>>();
		Map<String, String> map = null;
		URL url = new URL(path);
		HttpURLConnection conn = (HttpURLConnection) url.openConnection();// 利用HttpURLConnection对象,我们可以从网络中获取网页数据.
		conn.setConnectTimeout(5 * 1000); 	// 单位是毫秒，设置超时时间为5秒
		conn.setRequestMethod("GET");		// HttpURLConnection是通过HTTP协议请求path路径的，所以需要设置请求方式,可以不设置，因为默认为GET
		if (conn.getResponseCode() == 200) {// 判断请求码是否是200码，否则失败
			InputStream is = conn.getInputStream(); // 获取输入流
			byte[] data = readStream(is); 	// 把输入流转换成字符数组
			String json = new String(data); // 把字符数组转换成字符串
			
			
			//数据形式：{"total":2,"success":true,"arrayData":[{"id":1,"name":"小猪"},{"id":2,"name":"小猫"}]}
			JSONObject jsonObject=new JSONObject(json);		//返回的数据形式是一个Object类型，所以可以直接转换成一个Object
			int total=jsonObject.getInt("total");
			Boolean success=jsonObject.getBoolean("success");
			Log.i("abc", "total:" + total + " | success:" + success);	//测试数据
			
			JSONArray jsonArray = jsonObject.getJSONArray("arrayData");//里面有一个数组数据，可以用getJSONArray获取数组
			for (int i = 0; i < jsonArray.length(); i++) {
				JSONObject item = jsonArray.getJSONObject(i); // 得到每个对象
				int id = item.getInt("id"); 	// 获取对象对应的值
				String name = item.getString("name");

				map = new HashMap<String, String>(); // 存放到MAP里面
				map.put("id", id + "");
				map.put("name", name);
				list.add(map);
			}
		}

		// ***********测试数据******************
		
		for (Map<String, String> list2 : list) {
			String id = list2.get("id");
			String name = list2.get("name");
			Log.i("abc", "id:" + id + " | name:" + name);
		}

		return list;
	}
	
	
	/**
	 * 获取类型复杂的JSON数据
	 *数据形式：
		{"name":"小猪",
		 "age":23,
		 "content":{"questionsTotal":2,
					"questions": [ { "question": "what‘s your name?", "answer": "小猪"},{"question": "what‘s your age", "answer": "23"}]
			       }
		}
	 * @param path	网页路径
	 * @return	返回List
	 * @throws Exception
	 */
	public static List<Map<String, String>> getJSON(String path) throws Exception {
		List<Map<String, String>> list = new ArrayList<Map<String, String>>();
		Map<String, String> map = null;
		URL url = new URL(path);
		HttpURLConnection conn = (HttpURLConnection) url.openConnection();// 利用HttpURLConnection对象,我们可以从网络中获取网页数据.
		conn.setConnectTimeout(5 * 1000); 	// 单位是毫秒，设置超时时间为5秒
		conn.setRequestMethod("GET");		// HttpURLConnection是通过HTTP协议请求path路径的，所以需要设置请求方式,可以不设置，因为默认为GET
		if (conn.getResponseCode() == 200) {// 判断请求码是否是200码，否则失败
			InputStream is = conn.getInputStream(); // 获取输入流
			byte[] data = readStream(is); 	// 把输入流转换成字符数组
			String json = new String(data); // 把字符数组转换成字符串
			
			
			/*数据形式：
				{"name":"小猪",
				 "age":23,
				 "content":{"questionsTotal":2,
							"questions": [ { "question": "what‘s your name?", "answer": "小猪"},{"question": "what‘s your age", "answer": "23"}]
					       }
				}
			*/	
			JSONObject jsonObject=new JSONObject(json);		//返回的数据形式是一个Object类型，所以可以直接转换成一个Object
			String name=jsonObject.getString("name");		
			int age=jsonObject.getInt("age");
			Log.i("abc", "name:" + name + " | age:" + age);	//测试数据
			
			JSONObject contentObject=jsonObject.getJSONObject("content");		//获取对象中的对象
			String questionsTotal=contentObject.getString("questionsTotal");	//获取对象中的一个值
			Log.i("abc", "questionsTotal:" + questionsTotal);	//测试数据
			
			JSONArray contentArray=contentObject.getJSONArray("questions");		//获取对象中的数组
			for (int i = 0; i < contentArray.length(); i++) {
				JSONObject item = contentArray.getJSONObject(i); // 得到每个对象
				String question = item.getString("question"); 	// 获取对象对应的值
				String answer = item.getString("answer");

				map = new HashMap<String, String>(); // 存放到MAP里面
				map.put("question", question);
				map.put("answer", answer);
				list.add(map);
			}
		}

		// ***********测试数据******************
		
		for (Map<String, String> list2 : list) {
			String question = list2.get("question");
			String answer = list2.get("answer");
			Log.i("abc", "question:" + question + " | answer:" + answer);
		}

		return list;
	}
	
	
	
	
	/**
	 * 把输入流转换成字符数组
	 * @param inputStream	输入流
	 * @return	字符数组
	 * @throws Exception
	 */
	public static byte[] readStream(InputStream inputStream) throws Exception {
		ByteArrayOutputStream bout = new ByteArrayOutputStream();
		byte[] buffer = new byte[1024];
		int len = 0;
		while ((len = inputStream.read(buffer)) != -1) {
			bout.write(buffer, 0, len);
		}
		bout.close();
		inputStream.close();

		return bout.toByteArray();
	}

}