android DefaultHttpClient设置setCookieStore

android DefaultHttpClient设置setCookieStore

import java.util.Iterator;
import java.util.List;
import java.util.Map;

import org.apache.http.client.CookieStore;
import org.apache.http.cookie.Cookie;
import org.apache.http.impl.cookie.BasicClientCookie;

import android.app.Activity;
import android.content.SharedPreferences;

import com.google.gson.Gson;

public class CookieStoreUtils {

@SuppressWarnings("unchecked")
public static CookieStore initCookieStore(CookieStore cookieStore){
SharedPreferences mySharedPreferences = MyApplication.mInstance.getSharedPreferences(
"cookies", Activity.MODE_PRIVATE);
Map<String, String> map = (Map<String, String>) mySharedPreferences.getAll();
if (map != null) {
Iterator<String> it = map.keySet().iterator();
Gson gson = new Gson();
while (it.hasNext()) {
String key = it.next();
String jsonCookie = map.get(key);
if (jsonCookie != null) {
BasicClientCookie cookie = gson.fromJson(jsonCookie, BasicClientCookie.class);
cookieStore.addCookie(cookie);
}
}
}
return cookieStore;
}

public static void saveCookies(List<Cookie> cookies){
SharedPreferences mySharedPreferences = MyApplication.mInstance.getSharedPreferences("cookies", Activity.MODE_PRIVATE);
SharedPreferences.Editor editor = mySharedPreferences.edit();
Gson gson = new Gson();
for(Cookie cookie:cookies){
editor.putString(cookie.getName(), gson.toJson(cookie));// JSON转换成String类型
}
editor.commit();
}

}

private static CookieStore cookieStore = null;

/*
* POST方式，查询从URL得到的字符串
*/
public static String queryStringForPost(String url, List<NameValuePair> params) {
DefaultHttpClient client = new DefaultHttpClient();
if(cookieStore==null){
cookieStore = CookieStoreUtils.initCookieStore(client.getCookieStore());
}
client.setCookieStore(cookieStore);
// 获取HttpPost对象
HttpPost httpPost = new HttpPost(url);
String result = "isError";

HttpResponse httpResponse = null;
try {
// 设置HttpPost请求参数
httpPost.setEntity(new UrlEncodedFormEntity(params, HTTP.UTF_8));
httpResponse = client.execute(httpPost);

if (httpResponse.getStatusLine().getStatusCode() == 200) {
result = EntityUtils.toString(httpResponse.getEntity());
if (result.equals("{\"data\":null}") || result.equals("{\"data\":[]}")) {// 如果后台数据为空
return "isNull";// 返回为空的结果
}
}
//保存cookie到本地
CookieStoreUtils.saveCookies(cookieStore.getCookies());
return result;
} catch (Exception e) {
e.printStackTrace();
}

return result;
}