package com.yihu.figure.util;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.*;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLConnection;

/*
 * MD5 算法
 */
public class HttpUtil {

	private static final Logger logger = LoggerFactory.getLogger(HttpUtil.class);

	/**
	 * 向指定URL发送GET方法的请求
	 *
	 * @param url
	 *            发送请求的URL
	 * @param param
	 *            请求参数，请求参数应该是 name1=value1&name2=value2 的形式。
	 * @return URL 所代表远程资源的响应结果
	 */
	public static String sendGet(String url, String param,String userAgent) {
		String result = "";
		BufferedReader in = null;
		try {
			String urlNameString = url + "?" + param;
			URL realUrl = new URL(urlNameString);
			// 打开和URL之间的连接
			URLConnection connection = realUrl.openConnection();
			// 设置通用的请求属性
			connection.setRequestProperty("accept", "*/*");
			connection.setRequestProperty("connection", "Keep-Alive");
//			connection.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
			connection.setRequestProperty("user-agent", userAgent);
			// 建立实际的连接
			connection.connect();
			// 定义 BufferedReader输入流来读取URL的响应
			in = new BufferedReader(new InputStreamReader(connection.getInputStream()));
			String line;
			while ((line = in.readLine()) != null) {
				result += line;
			}
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			try {
				if (in != null) {
					in.close();
				}
			} catch (Exception e2) {
				e2.printStackTrace();
			}
		}
		return result;
	}

	/**
	 * 向指定 URL 发送POST方法的请求
	 *
	 * @param url
	 *            发送请求的 URL带上参数
	 * @param param
	 *            POST参数。
	 * @return 所代表远程资源的响应结果
	 */
	public static String sendPost(String url, String param) {
		StringBuffer buffer = new StringBuffer();
		PrintWriter out = null;
		BufferedReader in = null;
		HttpURLConnection conn = null;
		try {
			URL realUrl = new URL(url);
			// 打开和URL之间的连接
			conn = (HttpURLConnection) realUrl.openConnection();
			conn.setRequestMethod("POST");
			conn.setConnectTimeout(5000);
			conn.setDoOutput(true);
			conn.setDoInput(true);
			conn.setUseCaches(false);
			conn.setRequestProperty("Content-Type", "application/text");
			conn.setRequestProperty("accept", "*/*");
			conn.setRequestProperty("connection", "Keep-Alive");
			conn.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
			OutputStreamWriter osw = new OutputStreamWriter(conn.getOutputStream(), "UTF-8");
			osw.write(param.toString());
			osw.flush();

			// 读取返回内容
			BufferedReader br = new BufferedReader(new InputStreamReader(conn.getInputStream(), "UTF-8"));
			String temp;
			while ((temp = br.readLine()) != null) {
				buffer.append(temp);
				buffer.append("\n");
			}
		} catch (Exception e) {
			logger.error("push message error:", e);
		} finally {
			try {
				if (out != null) {
					out.close();
				}
				if (in != null) {
					in.close();
				}
			} catch (IOException ex) {
				ex.printStackTrace();
			}
		}
		return buffer.toString();
	}


	/**
	 * 向指定 URL 发送POST方法的请求
	 *
	 * @param url 发送请求的 URL带上参数
	 * @param param POST参数。
	 * @param charset 编码格式
	 * @return 所代表远程资源的响应结果
	 */
	public static String sendPost(String url, String param, String charset) {
		StringBuffer buffer = new StringBuffer();
		PrintWriter out = null;
		BufferedReader in = null;
		HttpURLConnection conn = null;
		try {
			URL realUrl = new URL(url);
			// 打开和URL之间的连接
			conn = (HttpURLConnection) realUrl.openConnection();
			conn.setRequestMethod("POST");
			conn.setDoOutput(true);
			conn.setDoInput(true);
			conn.setUseCaches(false);
			conn.setRequestProperty("Content-Type", "application/text");
			conn.setRequestProperty("accept", "*/*");
			conn.setRequestProperty("connection", "Keep-Alive");
			conn.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
			OutputStreamWriter osw = new OutputStreamWriter(conn.getOutputStream(), charset);
			osw.write(param.toString());
			osw.flush();

			// 读取返回内容
			BufferedReader br = new BufferedReader(new InputStreamReader(conn.getInputStream(), charset));
			String temp;
			while ((temp = br.readLine()) != null) {
				buffer.append(temp);
				buffer.append("\n");
			}
		} catch (Exception e) {
			logger.error("push message error:", e);
		} finally {
			try {
				if (out != null) {
					out.close();
				}
				if (in != null) {
					in.close();
				}
			} catch (IOException ex) {
				ex.printStackTrace();
			}
		}
		return buffer.toString();
	}

	public static void main(String[] args) {

	}

}