package com.securityControl.system.utils;

import org.apache.poi.util.IOUtils;

import java.io.*;
import java.net.URL;
import java.net.URLConnection;
import java.util.List;
import java.util.Map;

public class HttpHelp {
	/**
	 * 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 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)");
			// 建立实际的连接
			connection.connect();
			// 获取所有响应头字段
			Map<String, List<String>> map = connection.getHeaderFields();
			// 遍历所有的响应头字段
			for (String key : map.keySet()) {
				System.out.println(key + "--->" + map.get(key));
			}
			// 定义 BufferedReader输入流来读取URL的响应
			in = new BufferedReader(new InputStreamReader(connection.getInputStream(), "utf-8"));
			String line;
			while ((line = in.readLine()) != null) {
				result += line;
			}
		} catch (Exception e) {
			System.out.println("发送GET请求出现异常！" + e);
			e.printStackTrace();
		}
		// 使用finally块来关闭输入流
		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
	 * @param param 请求参数，请求参数应该是 name1=value1&name2=value2 的形式。
	 * @return 所代表远程资源的响应结果
	 */
	public static String sendPost(String url, String param) {
		PrintWriter out = null;
		BufferedReader in = null;
		String result = "";
		try {
			URL realUrl = new URL(url);
			// 打开和URL之间的连接
			URLConnection conn = realUrl.openConnection();
			// 设置通用的请求属性
			conn.setRequestProperty("Charsert", "UTF-8");
            conn.setRequestProperty("Content-Type", "application/json; charset=UTF-8");//设置参数类型是json格式
			conn.setRequestProperty("accept", "*/*");
			conn.setRequestProperty("connection", "Keep-Alive");
			conn.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
			conn.setRequestProperty("key", "SonBianDian");
			conn.setRequestProperty("secret", "38fb95ccc3483d8f8226150e011a65eb067e856a");
			// 发送POST请求必须设置如下两行
			conn.setDoOutput(true);
			conn.setDoInput(true);
			// 获取URLConnection对象对应的输出流
			out = new PrintWriter(conn.getOutputStream());
			// 发送请求参数
			out.print(param);
			// flush输出流的缓冲
			out.flush();
			// 定义BufferedReader输入流来读取URL的响应
			in = new BufferedReader(new InputStreamReader(conn.getInputStream(), "utf-8"));
			String line;
			while ((line = in.readLine()) != null) {
				result += line;
			}
		} catch (Exception e) {
			System.out.println("发送 POST 请求出现异常！" + e);
			e.printStackTrace();
		}
		// 使用finally块来关闭输出流、输入流
		finally {
			try {
				if (out != null) {
					out.close();
				}
				if (in != null) {
					in.close();
				}
			} catch (IOException ex) {
				ex.printStackTrace();
			}
		}
		return result;
	}

	/**
	 * 2 * 发送Http post请求 3 * 4 * @param xmlInfo 5 * json转化成的字符串 6 * @param URL 7 *
	 * 请求url 8 * @return 返回信息 9
	 */
	public static String doHttpPost(String xmlInfo, String URL) {
		InputStream instr = null;
		ByteArrayOutputStream out = null;
		try {
			System.out.println("发起的数据:" + xmlInfo);
			byte[] xmlData = xmlInfo.getBytes("UTF-8");
//			String hexStr = ByteHelper.bytesToHexString(xmlData);
//			System.out.println(hexStr);
			URL url = new URL(URL);
			URLConnection urlCon = url.openConnection();
			urlCon.setDoOutput(true);
			urlCon.setDoInput(true);
			urlCon.setUseCaches(false);
			urlCon.setRequestProperty("accept", "application/json");
			urlCon.setRequestProperty("Content-Type", "application/json");
			urlCon.setRequestProperty("Content-length", String.valueOf(xmlData.length));
			urlCon.setRequestProperty("key", "SonBianDian");
			urlCon.setRequestProperty("secret", "38fb95ccc3483d8f8226150e011a65eb067e856a");
			System.out.println(String.valueOf(xmlData.length));
			DataOutputStream printout = new DataOutputStream(urlCon.getOutputStream());
			printout.write(xmlData);
			printout.flush();
			printout.close();
			instr = urlCon.getInputStream();
			byte[] bis = IOUtils.toByteArray(instr);
			String ResponseString = new String(bis, "UTF-8");
			if ((ResponseString == null) || ("".equals(ResponseString.trim()))) {
				System.out.println("返回空");
			}
			System.out.println("返回数据为:" + ResponseString);
			return ResponseString;

		} catch (Exception e) {
			System.out.println("发送 POST 请求出现异常！" + e);
			e.printStackTrace();
			return "0";
		} finally {
			try {
				if(out!= null){
					out.close();
				}
				if(instr!=null){
					instr.close();
				}
			} catch (Exception ex) {
			}
		}
	}

	/**
	 * 2 * 发送Http post请求 3 * 4 * @param xmlInfo 5 * json转化成的字符串 6 * @param URL 7 *
	 * 请求url 8 * @return 返回信息 9
	 */
	public static String doHttpPosts( String URL,String xmlInfo) {
		System.out.println("发起的数据:" + xmlInfo);
		byte[] xmlData = xmlInfo.getBytes();
		InputStream instr = null;
		ByteArrayOutputStream out = null;
		try {
			URL url = new URL(URL);
			URLConnection urlCon = url.openConnection();
			urlCon.setDoOutput(true);
			urlCon.setDoInput(true);
			urlCon.setUseCaches(false);
			urlCon.setRequestProperty("content-Type", "application/json");
			urlCon.setRequestProperty("charset", "utf-8");
			urlCon.setRequestProperty("Content-length", String.valueOf(xmlData.length));
			//System.out.println(String.valueOf(xmlData.length));
			DataOutputStream printout = new DataOutputStream(urlCon.getOutputStream());
			printout.write(xmlData);
			printout.flush();
			printout.close();
			instr = urlCon.getInputStream();
			byte[] bis = IOUtils.toByteArray(instr);
			String ResponseString = new String(bis, "UTF-8");
			if ((ResponseString == null) || ("".equals(ResponseString.trim()))) {
				System.out.println("返回空");
			}
			System.out.println("返回数据为:" + ResponseString);
			return ResponseString;

		} catch (Exception e) {
			e.printStackTrace();
			return null;
		} finally {
			try {
				if(instr!=null){
					instr.close();
				}
			} catch (Exception ex) {
			}
		}
	}


}