json解析

<span style="font-size:24px;">解析数据：</span>

<span style="font-size:24px;">import java.util.ArrayList;
import java.util.List;
import org.apache.http.NameValuePair;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import com.hujing.weibo.object.WeiboItem;
import android.os.Handler;
import android.os.Message;

public class WeiboJsonOperation {
	public static final int WHAT_OK = 100;
	public static final int WHAT_NETWORK_ERROR = 102;
	public static final int WHAT_ERROR = 101;
	
	
	public static final String KEY_ACCESS_TOKEN = "access_token";
	public static String VALUE_ACCESS_TOKEN = "2.001DZ_9DKqoJSB024b8331bbc3Q8UD";
	
	/*** 获取当前登录用户及其所关注用户的最新微博的url*/
	private final String WEIBO_URI = "https://api.weibo.com/2/statuses/friends_timeline.json";
	/**
	 * 获得获取当前登录用户及其所关注用户的最新微博内容
	 * @param pair
	 * @param handler
	 */
	public void getFriendsWeiboLines(final List<NameValuePair> pair,final Handler handler){
		new Thread(){
			public void run() {
				HttpUtil util=new HttpUtil();
				String result=util.doGet(WEIBO_URI, pair);
				List<WeiboItem> list=getWeiboItem(result);//解析数据result
				if(handler!=null){
					Message message=handler.obtainMessage(WHAT_OK,list);
					handler.sendMessage(message);
				}
			}
		}.start();
	}
	/**
	 * 解析数据
	 * @param result
	 * @return
	 */
	private List<WeiboItem> getWeiboItem(String result) {
		List<WeiboItem> list = new ArrayList<WeiboItem>();// 初始化list
		
		JSONObject object;
		try {
			object = new JSONObject(result);
			JSONArray array = object.optJSONArray("statuses");
			// Log.i("result", "array--->"+array);//array有值
			if (array == null) {
				return null;
			}
			for (int i = 0; i < 10; i++) {// 每次获取10条微博
				JSONObject weibo_object = array.optJSONObject(i);
				// Log.i("result", "weibo_object--->"+weibo_object);//有值
				if (weibo_object == null) {
					return null;
				} else {
					OtherUtil oUtil=new OtherUtil();
					String time=oUtil.subTime(weibo_object.getString("created_at"));
					String weiboId=weibo_object.optString("idstr");
					String content = weibo_object.optString("text");
					String source = weibo_object.optString("source");
					int zf_num = weibo_object.optInt("reposts_count");
					int pl_num = weibo_object.optInt("comments_count");
					int dz_num = weibo_object.optInt("attitudes_count");
					JSONObject user = weibo_object.optJSONObject("user");// 获得用户
					String user_name = user.optString("screen_name");
					String user_image = user.optString("profile_image_url");// 头像地址
					String firstImage=weibo_object.optString("thumbnail_pic");
					String[] zf_image = {};
					String[] image = {};
					WeiboItem item = new WeiboItem(weiboId,user_image, user_name,
							oUtil.subSourceString(source), time, content, image, "", zf_image, zf_num,
							pl_num, dz_num,firstImage);
					list.add(item);
				}
			}
		} catch (JSONException e) {
			e.printStackTrace();
		} catch (Exception e) {
			e.printStackTrace();
		}
		return list;
	};
	
}</span>

拼接请求地址，get请求 ，post请求：

import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import java.util.List;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.methods.HttpUriRequest;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;

/**
 * get或者post请求网络的工具
 * 
 * @author hj
 * 
 */
public class HttpUtil {

	/**
	 * Post请求
	 * 
	 * @param url
	 *            接口地址
	 * @param pair
	 *            参数和值得集合
	 * @return 结果，如果没有，返回空
	 */
	public String doPost(String uri, List<NameValuePair> pair) {
		String result = null;
		if (pair == null) {
			pair = new ArrayList<NameValuePair>();
		}
		pair.add(new BasicNameValuePair(WeiboJsonOperation.KEY_ACCESS_TOKEN,
				WeiboJsonOperation.VALUE_ACCESS_TOKEN));// 添加access_token
		uri = buildUri(uri, pair);
		HttpPost post = new HttpPost(uri);

		try {
			HttpEntity entity = new UrlEncodedFormEntity(pair, "utf-8");
			post.setEntity(entity);
			result = doExecute(post);
		} catch (UnsupportedEncodingException e) {
			e.printStackTrace();
		}
		return result;
	}

	/**
	 * get请求
	 * 
	 * @param url
	 *            接口地址
	 * @param pair
	 *            参数和值得集合
	 * @return 结果，如果没有，返回空
	 */
	public String doGet(String uri, List<NameValuePair> pair) {
		String result = null;// 返回值
		if (pair == null) {
			pair = new ArrayList<NameValuePair>();
		}
		pair.add(new BasicNameValuePair(WeiboJsonOperation.KEY_ACCESS_TOKEN,
				WeiboJsonOperation.VALUE_ACCESS_TOKEN));// 添加access_token
		uri = buildUri(uri, pair);
		HttpGet get = new HttpGet(uri);
		result = doExecute(get);
		return result;
	}
	
	
	

	private String doExecute(HttpUriRequest request) {
		String result = "";
		HttpClient client = new DefaultHttpClient();
		try {
			HttpResponse resp = client.execute(request);
			int code = resp.getStatusLine().getStatusCode();
			if (code == HttpStatus.SC_OK) {
				result = EntityUtils.toString(resp.getEntity());
			}
		} catch (ClientProtocolException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
		return result;
	}

	/**
	 * 拼接uri
	 * 
	 * @param uri
	 * @param pair
	 * @return 拼接完成的uri
	 */
	private String buildUri(String uri, List<NameValuePair> pair) {
		if (pair == null) {
			return uri;
		} else {
			StringBuffer buf = new StringBuffer();
			buf.append(uri);
			int len = pair.size();
			for (int i = 0; i < len; i++) {
				NameValuePair pairItem = pair.get(i);
				if (i == 0) {
					buf.append("?");
				} else {
					buf.append("&");
				}
				buf.append(pairItem.getName());
				buf.append("=");
				buf.append(pairItem.getValue());
			}
			return buf.toString();
		}
	}

}

使用的时候：

jsonOeration.getFriendsWeiboLines(null, handler);

// 如果需要拼接url，如下所示：
List<NameValuePair> pair = new ArrayList<NameValuePair>();
pair.add(new BasicNameValuePair("id", String.valueOf(urlId)));
jsonOeration.getFriendsWeiboLines(pair, handler);