package com.net.util;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.util.List;
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.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.util.EntityUtils;
import org.json.JSONException;
import org.json.JSONObject;
import android.content.Context;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.util.Log;
import android.widget.Toast;
public class NetUtil {
private static final String TAG = "NetUtil";
/**
* 网络连接是否可用
*/
public static boolean isConnnected(Context context) {
ConnectivityManager connectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
if (null != connectivityManager) {
NetworkInfo networkInfo[] = connectivityManager.getAllNetworkInfo();
if (null != networkInfo) {
for (NetworkInfo info : networkInfo) {
if (info.getState() == NetworkInfo.State.CONNECTED) {
Log.e(TAG, "the net is ok");
return true;
}
}
}
}
Toast.makeText(context, "网络连接失败", Toast.LENGTH_SHORT).show();
return false;
}
/**
* 网络可用状态下，通过get方式向server端发送请求，并返回响应数据
*
* @param strUrl 请求网址
* @param context 上下文
* @return 响应数据
*/
public static JSONObject getResponseForGet(String strUrl, Context context) {
if (isConnnected(context)) {
return getResponseForGet(strUrl);
}
return null;
}
/**
* 通过Get方式处理请求，并返回相应数据
*
* @param strUrl 请求网址
* @return 响应的JSON数据
*/
public static JSONObject getResponseForGet(String strUrl) {
HttpGet httpRequest = new HttpGet(strUrl);
return getRespose(httpRequest);
}
/**
* 网络可用状态下，通过post方式向server端发送请求，并返回响应数据
*
* @param market_uri 请求网址
* @param nameValuePairs 参数信息
* @param context 上下文
* @return 响应数据
*/
public static JSONObject getResponseForPost(String market_uri, List<NameValuePair> nameValuePairs, Context context) {
if (isConnnected(context)) {
return getResponseForPost(market_uri, nameValuePairs);
}
return null;
}
/**
* 通过post方式向服务器发送请求，并返回响应数据
*
* @param strUrl 请求网址
* @param nameValuePairs 参数信息
* @return 响应数据
*/
public static JSONObject getResponseForPost(String market_uri, List<NameValuePair> nameValuePairs) {
if (null == market_uri || "" == market_uri) {
return null;
}
HttpPost request = new HttpPost(market_uri);
try {
request.setEntity(new UrlEncodedFormEntity(nameValuePairs));
return getRespose(request);
} catch (UnsupportedEncodingException e1) {
e1.printStackTrace();
}
return null;
}
/**
* 响应客户端请求
*
* @param request 客户端请求get/post
* @return 响应数据
*/
public static JSONObject getRespose(HttpUriRequest request) {
try {
HttpResponse httpResponse = new DefaultHttpClient().execute(request);
int statusCode = httpResponse.getStatusLine().getStatusCode();
if (HttpStatus.SC_OK == statusCode) {
String result = EntityUtils.toString(httpResponse.getEntity());
Log.i(TAG, "results=" + result);
return new JSONObject(result);
}
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
}