package com.dsh.guns.modular.system.util;

import java.io.IOException;
import java.io.PrintWriter;
import java.net.URISyntaxException;
import java.util.Iterator;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;


import com.alibaba.fastjson.JSONObject;
import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.HttpException;
import org.apache.commons.httpclient.SimpleHttpConnectionManager;
import org.apache.commons.httpclient.methods.GetMethod;
import org.apache.commons.httpclient.methods.PostMethod;
import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.utils.URIBuilder;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.util.EntityUtils;

public class HttpRequestUtil {

	/***
	 * get请求(带参数)
	 * @param url
	 * @return String
	 */
	public static String getReq(String url, Map<String, String> params) {
		String result = null;
		try {
			URIBuilder uriBuilder = new URIBuilder(url);
			Iterator maplist = params.entrySet().iterator();
			while (maplist.hasNext()) {
				Map.Entry<String, String> map = (Map.Entry<String, String>) maplist.next();
				uriBuilder.addParameter(map.getKey(), map.getValue());
			}
			CloseableHttpClient client = HttpClientBuilder.create().build();
			HttpPost get = new HttpPost(uriBuilder.build());
			get.addHeader("User-Agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.81 Safari/537.36");
			HttpResponse response = client.execute(get);
			result = EntityUtils.toString(response.getEntity(), "UTF-8");

		} catch (URISyntaxException e) {
			e.printStackTrace();
		} catch (ClientProtocolException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
		return result;
	}
	public static String postRequest(String url, Map<String, String> params) {
		// 构造HttpClient的实例
		HttpClient httpClient = new HttpClient();
		// 创建POST方法的实例
		PostMethod postMethod = new PostMethod(url);
		// 设置请求头信息
		postMethod.setRequestHeader("Connection", "close");
		postMethod.addRequestHeader("Content-Type", "application/x-www-form-urlencoded;charset=UTF-8");
		// 添加参数
		for (Map.Entry<String, String> entry : params.entrySet()) {
			postMethod.addParameter(entry.getKey(), entry.getValue());
		}
		// 使用系统提供的默认的恢复策略,设置请求重试处理，用的是默认的重试处理：请求三次
		httpClient.getParams().setBooleanParameter("http.protocol.expect-continue", false);
		// 接收处理结果
		String result = null;
		try {
			// 执行Http Post请求
			httpClient.executeMethod(postMethod);
			// 返回处理结果
			result = postMethod.getResponseBodyAsString();
		} catch (HttpException e) {
			// 发生致命的异常，可能是协议不对或者返回的内容有问题
			System.out.println("请检查输入的URL!");
			e.printStackTrace();
		} catch (IOException e) {
			// 发生网络异常
			System.out.println("发生网络异常!");
			e.printStackTrace();
		} finally {
			// 释放链接
			postMethod.releaseConnection();
			// 关闭HttpClient实例
			if (httpClient != null) {
				((SimpleHttpConnectionManager) httpClient.getHttpConnectionManager()).shutdown();
				httpClient = null;
			}
		}
		return result;
	}

	public static String getRequest(String url, Map<String, String> params) {
		// 构造HttpClient实例
		HttpClient client = new HttpClient();
		// 拼接参数
		String paramStr = "";
		for (String key : params.keySet()) {
			paramStr = paramStr + "&" + key + "=" + params.get(key);
		}
		paramStr = paramStr.substring(1);
		// 创建GET方法的实例
		GetMethod method = new GetMethod(url + "?" + paramStr);
		// 接收返回结果
		String result = null;
		try {
			// 执行HTTP GET方法请求
			client.executeMethod(method);
			// 返回处理结果
			result = method.getResponseBodyAsString();
		} catch (HttpException e) {
			// 发生致命的异常，可能是协议不对或者返回的内容有问题
			System.out.println("请检查输入的URL!");
			e.printStackTrace();
		} catch (IOException e) {
			// 发生网络异常
			System.out.println("发生网络异常!");
			e.printStackTrace();
		} finally {
			// 释放链接
			method.releaseConnection();
			// 关闭HttpClient实例
			if (client != null) {
				((SimpleHttpConnectionManager) client
						.getHttpConnectionManager()).shutdown();
				client = null;
			}
		}
		return result;
	}
	
	
	/**
	 * 发送网络请求
	 * @param url
	 * @return
	 */
	public static String sendNetRequest(String url, Map<String, String> params) {
		// 构造HttpClient实例
		HttpClient client = new HttpClient();
		String paramStr = "";
		for (String key : params.keySet()) {
			paramStr = paramStr + "&" + key + "=" + params.get(key);
		}
		paramStr = paramStr.substring(1);
		System.err.println(url + "?" + paramStr);
		// 创建GET方法的实例
		GetMethod method = new GetMethod(url + "?" + paramStr);
		// 接收返回结果
		String result = null;
		try {
			// 执行HTTP GET方法请求
			client.executeMethod(method);
			// 返回处理结果
			result = method.getResponseBodyAsString();
		} catch (HttpException e) {
			// 发生致命的异常，可能是协议不对或者返回的内容有问题
			System.out.println("请检查输入的URL!");
			e.printStackTrace();
		} catch (IOException e) {
			// 发生网络异常
			System.out.println("发生网络异常!");
			e.printStackTrace();
		} finally {
			// 释放链接
			method.releaseConnection();
			// 关闭HttpClient实例
			if (client != null) {
				((SimpleHttpConnectionManager) client.getHttpConnectionManager()).shutdown();
				client = null;
			}
		}
		return result;
	}
	
	
	
	/**
	 * jsonp跨域请求数据响应<br/>
	 * 方法名：responsejsonpData<br/>
	 * @author：Mryang<br/>
	 * @createTime：2016年7月31日-下午11:17:31 <br/>
	 * @tel: 15198268054<br/>
	 * @param request
	 * @param response
	 * @param map void<br/>
	 * @exception <br/>
	 * @since  1.0.0
	 */
	public void responsejsonpData(HttpServletRequest request, HttpServletResponse response, Map<String, Object> map) {
		 response.setCharacterEncoding("UTF-8");
		 response.setHeader("Content-Type", "text/html;Charset=utf-8");
		try {
			PrintWriter writer = response.getWriter();
		    String params = request.getParameter("callback");
		    String json = JSONObject.toJSONString(map);
			writer.print(params+ "("+json+")");
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
	
	
	
	
	
	
	
	
	
	
	
	
	
}