HttpUtils.java

package com.hjdz.install.util;

import java.util.Map;

import com.linshao.http.AsyncHttpClient;
import com.linshao.http.AsyncHttpResponseHandler;
import com.linshao.http.FileAsyncHttpResponseHandler;
import com.linshao.http.RequestHandle;
import com.linshao.http.RequestParams;

public class HttpUtils {
	private static AsyncHttpClient asyncHttpClient = new AsyncHttpClient();
	private static RequestHandle handler;

	/**
	 * 
	 * @param url
	 * @param map
	 * @param asyncHandler
	 */
	public static void post(String url, Map<String, String> map,
			AsyncHttpResponseHandler asyncHandler) {
		// Close the connection expired.
		asyncHttpClient.getHttpClient().getConnectionManager()
				.closeExpiredConnections();
		if (map == null || map.isEmpty()) {
			handler = asyncHttpClient.post(url, asyncHandler);
		} else {
			RequestParams params = new RequestParams(map);
			handler = asyncHttpClient.post(url, params, asyncHandler);
		}
	}

	/**
	 * Download the file
	 * 
	 * @param url
	 * @param fileHandler
	 */
	public static void downFile(String url,
			FileAsyncHttpResponseHandler fileHandler) {
		handler = asyncHttpClient.get(url, fileHandler);
	}

	/**
	 * Cancel the network request
	 */
	public static void canclePost() {
		handler.cancel(true);
	}
}