HttpUtil.java

package cn.edu.zafu.jwc.util;

import java.io.UnsupportedEncodingException;

import org.apache.http.Header;

import android.app.ProgressDialog;
import android.content.Context;
import android.widget.Toast;
import cn.edu.zafu.jwc.service.LinkService;

import com.loopj.android.http.AsyncHttpClient;
import com.loopj.android.http.AsyncHttpResponseHandler;
import com.loopj.android.http.BinaryHttpResponseHandler;
import com.loopj.android.http.JsonHttpResponseHandler;
import com.loopj.android.http.RequestParams;

/**
 * Http请求工具类
 * @author lizhangqu
 * @date 2015-2-1
 */
/**
 * @author Administrator
 * 
 */
public class HttpUtil {
	private static AsyncHttpClient client = new AsyncHttpClient(); // 实例话对象
	// Host地址
	public static final String HOST = "202.107.200.222:8080";
	// 基础地址
	public static final String URL_BASE = "http://202.107.200.222:8080/";
	// 验证码地址
	public static final String URL_CODE = "http://202.107.200.222:8080/CheckCode.aspx";
	// 登陆地址
	public static final String URL_LOGIN = "http://202.107.200.222:8080/default2.aspx";
	// 登录成功的首页
	public static String URL_MAIN = "http://202.107.200.222:8080/xs_main.aspx?xh=XH";
	// 请求地址
	public static String URL_QUERY = "http://202.107.200.222:8080/QUERY";

	/**
	 * 请求参数
	 */
	public static String Button1 = "";
	public static String hidPdrs = "";
	public static String hidsc = "";
	public static String lbLanguage = "";
	public static String RadioButtonList1 = "学生";
	public static String __VIEWSTATE = "dDwyODE2NTM0OTg7Oz7YiHv1mHkLj1OkgkF90IvNTvBrLQ==";
	public static String TextBox2 = null;
	public static String txtSecretCode = null;
	public static String txtUserName = null;

	// 静态初始化
	static {
		client.setTimeout(10000); // 设置链接超时，如果不设置，默认为10s
		// 设置请求头
		client.addHeader("Host", HOST);
		client.addHeader("Referer", URL_LOGIN);
		client.addHeader("User-Agent",
				"Mozilla/5.0 (Windows NT 6.1; WOW64; Trident/7.0; rv:11.0) like Gecko");
	}

	/**
	 * get,用一个完整url获取一个string对象
	 * 
	 * @param urlString
	 * @param res
	 */
	public static void get(String urlString, AsyncHttpResponseHandler res) {
		client.get(urlString, res);
	}

	/**
	 * get,url里面带参数
	 * 
	 * @param urlString
	 * @param params
	 * @param res
	 */
	public static void get(String urlString, RequestParams params,
			AsyncHttpResponseHandler res) {
		client.get(urlString, params, res);
	}

	/**
	 * get,不带参数，获取json对象或者数组
	 * 
	 * @param urlString
	 * @param res
	 */
	public static void get(String urlString, JsonHttpResponseHandler res) {
		client.get(urlString, res);
	}

	/**
	 * get,带参数，获取json对象或者数组
	 * 
	 * @param urlString
	 * @param params
	 * @param res
	 */
	public static void get(String urlString, RequestParams params,
			JsonHttpResponseHandler res) {
		client.get(urlString, params, res);
	}

	/**
	 * get,下载数据使用，会返回byte数据
	 * 
	 * @param uString
	 * @param bHandler
	 */
	public static void get(String uString, BinaryHttpResponseHandler bHandler) {
		client.get(uString, bHandler);
	}

	/**
	 * post,不带参数
	 * 
	 * @param urlString
	 * @param res
	 */
	public static void post(String urlString, AsyncHttpResponseHandler res) {
		client.post(urlString, res);
	}

	/**
	 * post,带参数
	 * 
	 * @param urlString
	 * @param params
	 * @param res
	 */
	public static void post(String urlString, RequestParams params,
			AsyncHttpResponseHandler res) {
		client.post(urlString, params, res);
	}

	/**
	 * post,不带参数，获取json对象或者数组
	 * 
	 * @param urlString
	 * @param res
	 */
	public static void post(String urlString, JsonHttpResponseHandler res) {
		client.post(urlString, res);
	}

	/**
	 * post,带参数，获取json对象或者数组
	 * 
	 * @param urlString
	 * @param params
	 * @param res
	 */
	public static void post(String urlString, RequestParams params,
			JsonHttpResponseHandler res) {
		client.post(urlString, params, res);
	}

	/**
	 * post,返回二进制数据时使用，会返回byte数据
	 * 
	 * @param uString
	 * @param bHandler
	 */
	public static void post(String uString, BinaryHttpResponseHandler bHandler) {
		client.post(uString, bHandler);
	}

	/**
	 * 返回请求客户端
	 * 
	 * @return
	 */
	public static AsyncHttpClient getClient() {
		return client;
	}

	/**
	 * 获得登录时所需的请求参数
	 * 
	 * @return
	 */
	public static RequestParams getLoginRequestParams() {
		// 设置请求参数
		RequestParams params = new RequestParams();
		params.add("__VIEWSTATE", __VIEWSTATE);
		params.add("Button1", Button1);
		params.add("hidPdrs", hidPdrs);
		params.add("hidsc", hidsc);
		params.add("lbLanguage", lbLanguage);
		params.add("RadioButtonList1", RadioButtonList1);
		params.add("TextBox2", TextBox2);
		params.add("txtSecretCode", txtSecretCode);
		params.add("txtUserName", txtUserName);
		return params;
	}
	
	
	public interface QueryCallback {
		public String handleResult(String result);
	}
	public static void getQuery(final Context context,LinkService linkService,final String urlName,final QueryCallback callback) {
		final ProgressDialog dialog = CommonUtil.getProcessDialog(
				context, "正在获取"+urlName);
		dialog.show();
		String link = linkService.getLinkByName(urlName);
		if (link != null) {
			HttpUtil.URL_QUERY = HttpUtil.URL_QUERY.replace("QUERY", link);
		} else {
			Toast.makeText(context, "链接出现错误",
					Toast.LENGTH_SHORT).show();
			return;
		}
		HttpUtil.getClient().addHeader("Referer", HttpUtil.URL_MAIN);
		HttpUtil.getClient().setURLEncodingEnabled(true);
		HttpUtil.get(HttpUtil.URL_QUERY, new AsyncHttpResponseHandler() {
			@Override
			public void onSuccess(int arg0, Header[] arg1, byte[] arg2) {
				
				String resultContent=null;
				try {
					resultContent = new String(arg2, "gb2312");
					if(callback!=null){
						callback.handleResult(resultContent);
					}
					Toast.makeText(context, urlName+"获取成功！！！",Toast.LENGTH_LONG).show();
				} catch (UnsupportedEncodingException e) {
					e.printStackTrace();
				} finally {
					dialog.dismiss();
				}
			}

			@Override
			public void onFailure(int arg0, Header[] arg1, byte[] arg2,
					Throwable arg3) {
				dialog.dismiss();
				Toast.makeText(context, urlName+"获取失败！！！",
						Toast.LENGTH_SHORT).show();
			}
		});
	}
}