HttpRequestProxy 代理

package com.systop.pmmis3.sms.util;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLEncoder;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Map.Entry;

import org.apache.log4j.Logger;

public class HttpRequestProxy {

	private static Logger logger = Logger.getLogger(HttpRequestProxy.class);

	/**
	 * 连接超时
	 */
	private static int connectTimeOut = 5000;

	/**
	 * 读取数据超时
	 */
	private static int readTimeOut = 10000;

	/**
	 * 请求编码
	 */
	private static String requestEncoding = "GBK";

	/**
	 * <pre>
	 * 发送带参数的GET的HTTP请求
	 * </pre>
	 * 
	 * @param reqUrl
	 *            HTTP请求URL
	 * @param parameters
	 *            参数映射表
	 * @return HTTP响应的字符串
	 */
	@SuppressWarnings("unchecked")
	public static String doGet(String reqUrl, Map parameters,
			String recvEncoding) {
		HttpURLConnection url_con = null;
		String responseContent = null;
		try {
			StringBuffer params = new StringBuffer();
			for (Iterator iter = parameters.entrySet().iterator(); iter
					.hasNext();) {
				Entry element = (Entry) iter.next();
				params.append(element.getKey().toString());
				params.append("=");
				params.append(URLEncoder.encode(element.getValue().toString(),
						HttpRequestProxy.requestEncoding));
				params.append("&");
			}

			if (params.length() > 0) {
				params = params.deleteCharAt(params.length() - 1);
				reqUrl = reqUrl + "?" + params;
			}

			URL url = new URL(reqUrl);
			url_con = (HttpURLConnection) url.openConnection();
			url_con.setRequestMethod("GET");

			url_con.setConnectTimeout(HttpRequestProxy.getConnectTimeOut());
			url_con.setReadTimeout(HttpRequestProxy.getReadTimeOut());

			InputStream in = url_con.getInputStream();
			BufferedReader rd = new BufferedReader(new InputStreamReader(in,
					recvEncoding));
			String tempLine = rd.readLine();
			StringBuffer temp = new StringBuffer();
			String crlf = System.getProperty("line.separator");
			while (tempLine != null) {
				temp.append(tempLine);
				temp.append(crlf);
				tempLine = rd.readLine();
			}
			responseContent = temp.toString();
			rd.close();
			in.close();
		} catch (IOException e) {
			logger.error("链接SMS Server 失败。 网络不稳定，或者网络已断开");
		} finally {
			if (url_con != null) {
				url_con.disconnect();
			}
		}

		return responseContent;
	}

	/**
	 * <pre>
	 * 发送不带参数的GET的HTTP请求
	 * </pre>
	 * 
	 * @param reqUrl
	 *            HTTP请求URL
	 * @return HTTP响应的字符串
	 */
	public static String doGet(String reqUrl, String recvEncoding) {
		Map<String, String> parameters = new HashMap<String, String>();
		String queryUrl = reqUrl;
		int paramIndex = reqUrl.indexOf("?");

		if (paramIndex > 0) {
			queryUrl = reqUrl.substring(0, paramIndex);
			String params = reqUrl.substring(paramIndex + 1, reqUrl.length());
			String[] paramArray = params.split("&");
			for (int i = 0; i < paramArray.length; i++) {
				String string = paramArray[i];
				int index = string.indexOf("=");
				if (index > 0) {
					String name = string.substring(0, index);
					String value = string.substring(index + 1, string.length());
					parameters.put(name, value);
				}
			}
		}

		return HttpRequestProxy.doGet(queryUrl, parameters, recvEncoding);
	}

	/**
	 * <pre>
	 * 发送带参数的POST的HTTP请求
	 * </pre>
	 * 
	 * @param reqUrl
	 *            HTTP请求URL
	 * @param parameters
	 *            参数映射表
	 * @return HTTP响应的字符串
	 */
	@SuppressWarnings("unchecked")
	public static String doPost(String reqUrl, Map parameters,
			String recvEncoding) {
		HttpURLConnection url_con = null;
		String responseContent = null;
		try {
			StringBuffer params = new StringBuffer();
			for (Iterator iter = parameters.entrySet().iterator(); iter
					.hasNext();) {
				Entry element = (Entry) iter.next();
				params.append(element.getKey().toString());
				params.append("=");
				params.append(URLEncoder.encode(element.getValue().toString(),
						HttpRequestProxy.requestEncoding));
				params.append("&");
			}

			if (params.length() > 0) {
				params = params.deleteCharAt(params.length() - 1);
			}

			URL url = new URL(reqUrl);
			url_con = (HttpURLConnection) url.openConnection();
			url_con.setRequestMethod("POST");

			url_con.setConnectTimeout(HttpRequestProxy.getConnectTimeOut());
			url_con.setReadTimeout(HttpRequestProxy.getReadTimeOut());

			url_con.setDoOutput(true);
			byte[] b = params.toString().getBytes();
			url_con.getOutputStream().write(b, 0, b.length);
			url_con.getOutputStream().flush();
			url_con.getOutputStream().close();

			InputStream in = url_con.getInputStream();
			BufferedReader rd = new BufferedReader(new InputStreamReader(in,
					recvEncoding));
			String tempLine = rd.readLine();
			StringBuffer tempStr = new StringBuffer();
			String crlf = System.getProperty("line.separator");
			while (tempLine != null) {
				tempStr.append(tempLine);
				tempStr.append(crlf);
				tempLine = rd.readLine();
			}
			responseContent = tempStr.toString();
			rd.close();
			in.close();
		} catch (IOException e) {
			logger.error("链接SMS Server 失败。 网络不稳定，或者网络已断开");
		} finally {
			if (url_con != null) {
				url_con.disconnect();
			}
		}
		return responseContent;
	}

	/**
	 * @return 连接超时(毫秒)
	 */
	public static int getConnectTimeOut() {
		return HttpRequestProxy.connectTimeOut;
	}

	/**
	 * @return 读取数据超时(毫秒)
	 */
	public static int getReadTimeOut() {
		return HttpRequestProxy.readTimeOut;
	}

	/**
	 * @return 请求编码
	 */
	public static String getRequestEncoding() {
		return requestEncoding;
	}

	/**
	 * @param connectTimeOut
	 *            连接超时(毫秒)
	 */
	public static void setConnectTimeOut(int connectTimeOut) {
		HttpRequestProxy.connectTimeOut = connectTimeOut;
	}

	/**
	 * @param readTimeOut
	 *            读取数据超时(毫秒)
	 */
	public static void setReadTimeOut(int readTimeOut) {
		HttpRequestProxy.readTimeOut = readTimeOut;
	}

	/**
	 * @param requestEncoding
	 *            请求编码
	 */
	public static void setRequestEncoding(String requestEncoding) {
		HttpRequestProxy.requestEncoding = requestEncoding;
	}
}