package com.example.sso.util;

import java.io.IOException;
import java.security.KeyManagementException;
import java.security.NoSuchAlgorithmException;
import java.security.cert.CertificateException;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;

import org.apache.http.Consts;
import org.apache.http.HttpEntity;
import org.apache.http.NameValuePair;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.config.Registry;
import org.apache.http.config.RegistryBuilder;
import org.apache.http.conn.socket.ConnectionSocketFactory;
import org.apache.http.conn.socket.PlainConnectionSocketFactory;
import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.impl.conn.PoolingHttpClientConnectionManager;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import javax.net.ssl.SSLContext;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;

/** * Http工具类，发送Http请求， Get请求请将参数放在url中 Post请求请将参数放在Map中 * * @author 程高伟 * @date 2017年1月5日 下午6:03:50 */
public class HttpUtil {
//    private static final Logger log = LoggerFactory.getLogger(HttpUtil.class);
    private static final CloseableHttpClient httpclient = HttpClients.createDefault();
    private static final String userAgent = "Mozilla/5.0 (Windows NT 6.2; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.2840.87 Safari/537.36";

    public static SSLContext createIgnoreVerifySSL() throws NoSuchAlgorithmException, KeyManagementException {
        SSLContext sc = SSLContext.getInstance("SSLv3");

        // 实现一个X509TrustManager接口，用于绕过验证，不用修改里面的方法
        X509TrustManager trustManager = new X509TrustManager() {
            @Override
            public void checkClientTrusted(
                    java.security.cert.X509Certificate[] paramArrayOfX509Certificate,
                    String paramString) throws CertificateException {
            }

            @Override
            public void checkServerTrusted(
                    java.security.cert.X509Certificate[] paramArrayOfX509Certificate,
                    String paramString) throws CertificateException {
            }

            @Override
            public java.security.cert.X509Certificate[] getAcceptedIssuers() {
                return null;
            }
        };

        sc.init(null, new TrustManager[] { trustManager }, null);
        return sc;
    }
    /** * 发送HttpGet请求 * * @param url * 请求地址 * @return 返回字符串 */
    public static String sendGet(String url,String token) throws KeyManagementException, NoSuchAlgorithmException {
        SSLContext sslcontext = createIgnoreVerifySSL();

        // 设置协议http和https对应的处理socket链接工厂的对象
        Registry<ConnectionSocketFactory> socketFactoryRegistry = RegistryBuilder.<ConnectionSocketFactory>create()
                .register("http", PlainConnectionSocketFactory.INSTANCE)
                .register("https", new SSLConnectionSocketFactory(sslcontext))
                .build();
        PoolingHttpClientConnectionManager connManager = new PoolingHttpClientConnectionManager(socketFactoryRegistry);
        CloseableHttpClient httpClient = HttpClients.custom().setConnectionManager(connManager).build();
        String result = null;
        CloseableHttpResponse response = null;
        try {
            HttpGet httpGet = new HttpGet(url);
            httpGet.setHeader("User-Agent", userAgent);
            httpGet.setHeader("Authorization", "Bearer "+token);
            response = httpClient.execute(httpGet);
            HttpEntity entity = response.getEntity();
            if (entity != null) {
                result = EntityUtils.toString(entity,"UTF-8");
            }
        } catch (Exception e) {
//            log.error("处理失败 {}" + e);
            e.printStackTrace();
        } finally {
            if (response != null) {
                try {
                    response.close();
                } catch (IOException e) {
//                  //  log.error(e.getMessage());
                }
            }
        }
        return result;
    }



    /** * 发送HttpPost请求，参数为json字符串 * * @param url * @param jsonStr * @return */
    public static String sendPost(String url, String jsonStr,String token) throws KeyManagementException, NoSuchAlgorithmException {
        //采用绕过验证的方式处理https请求
        SSLContext sslcontext = createIgnoreVerifySSL();

        // 设置协议http和https对应的处理socket链接工厂的对象
        Registry<ConnectionSocketFactory> socketFactoryRegistry = RegistryBuilder.<ConnectionSocketFactory>create()
                .register("http", PlainConnectionSocketFactory.INSTANCE)
                .register("https", new SSLConnectionSocketFactory(sslcontext))
                .build();
        PoolingHttpClientConnectionManager connManager = new PoolingHttpClientConnectionManager(socketFactoryRegistry);
        CloseableHttpClient httpClient = HttpClients.custom().setConnectionManager(connManager).build();
        String result = null;
        // 字符串编码
        StringEntity entity = new StringEntity(jsonStr, Consts.UTF_8);
        // 设置content-type
        entity.setContentType("application/json");
        HttpPost httpPost = new HttpPost(url);
        // 防止被当成攻击添加的
        httpPost.setHeader("User-Agent", userAgent);
        httpPost.setHeader("Authorization", "Bearer "+token);
        // 接收参数设置
        httpPost.setHeader("Accept", "application/json");
        httpPost.setEntity(entity);
        CloseableHttpResponse response = null;
        try {
            response = httpClient.execute(httpPost);
            HttpEntity httpEntity = response.getEntity();
            result = EntityUtils.toString(httpEntity);
        } catch (IOException e) {
//          //  log.error(e.getMessage());
        } finally {
            // 关闭CloseableHttpResponse
            if (response != null) {
            try {
                response.close();
            } catch (IOException e) {
//              //  log.error(e.getMessage());
            }
        }
    }
        return result;
    }


    /** * 发送HttpPost请求，参数为map * * @param url * 请求地址 * @param map * 请求参数 * @return 返回字符串 */
    public static String sendPost(String url, Map<String, String> map) {
        // 设置参数
        List<NameValuePair> formparams = new ArrayList<NameValuePair>();
        for (Map.Entry<String, String> entry : map.entrySet()) {
            formparams.add(new BasicNameValuePair(entry.getKey(), entry.getValue()));
        }
        // 编码
        UrlEncodedFormEntity formEntity = new UrlEncodedFormEntity(formparams, Consts.UTF_8);
        // 取得HttpPost对象
        HttpPost httpPost = new HttpPost(url);
        // 防止被当成攻击添加的
        httpPost.setHeader("User-Agent", userAgent);
        // 参数放入Entity
        httpPost.setEntity(formEntity);
        CloseableHttpResponse response = null;
        String result = null;
        try {
            // 执行post请求
            response = httpclient.execute(httpPost);
            // 得到entity
            HttpEntity entity = response.getEntity();
            // 得到字符串
            result = EntityUtils.toString(entity);
        } catch (IOException e) {
          //  log.error(e.getMessage());
        } finally {
            if (response != null) {
                try {
                    response.close();
                } catch (IOException e) {
                  //  log.error(e.getMessage());
                }
            }
        }
        return result;
    }


    /** * 发送HttpPost请求，参数为json字符串 * * @param url * @param jsonStr * @return */
    public static String sendPost(String url, String jsonStr) throws KeyManagementException, NoSuchAlgorithmException {
        //采用绕过验证的方式处理https请求
        SSLContext sslcontext = createIgnoreVerifySSL();

        // 设置协议http和https对应的处理socket链接工厂的对象
        Registry<ConnectionSocketFactory> socketFactoryRegistry = RegistryBuilder.<ConnectionSocketFactory>create()
                .register("http", PlainConnectionSocketFactory.INSTANCE)
                .register("https", new SSLConnectionSocketFactory(sslcontext))
                .build();
        PoolingHttpClientConnectionManager connManager = new PoolingHttpClientConnectionManager(socketFactoryRegistry);
        CloseableHttpClient httpClient = HttpClients.custom().setConnectionManager(connManager).build();
        String result = null;
        // 字符串编码
        StringEntity entity = new StringEntity(jsonStr, Consts.UTF_8);
        // 设置content-type
        entity.setContentType("application/json");
        HttpPost httpPost = new HttpPost(url);
        // 防止被当成攻击添加的
        httpPost.setHeader("User-Agent", userAgent);
        httpPost.setHeader("Authorization", "Bearer ");
        // 接收参数设置
        httpPost.setHeader("Accept", "application/json");
        httpPost.setEntity(entity);
        CloseableHttpResponse response = null;
        try {
            response = httpClient.execute(httpPost);
            HttpEntity httpEntity = response.getEntity();
            result = EntityUtils.toString(httpEntity);
        } catch (IOException e) {
          //  log.error(e.getMessage());
        } finally {
            // 关闭CloseableHttpResponse
            if (response != null) {
                try {
                    response.close();
                } catch (IOException e) {
                  //  log.error(e.getMessage());
                }
            }
        }
        System.out.println(result);
        return result;
    }

    /** * 发送不带参数的HttpPost请求 * * @param url * @return */
    public static String sendPost(String url) {
        String result = null;
        // 得到一个HttpPost对象
        HttpPost httpPost = new HttpPost(url);
        // 防止被当成攻击添加的
        httpPost.setHeader("User-Agent", userAgent);
        CloseableHttpResponse response = null;
        try {
            // 执行HttpPost请求，并得到一个CloseableHttpResponse
            response = httpclient.execute(httpPost);
            // 从CloseableHttpResponse中拿到HttpEntity
            HttpEntity entity = response.getEntity();
            // 将HttpEntity转换为字符串
            result = EntityUtils.toString(entity);
        } catch (IOException e) {
          //  log.error(e.getMessage());
        } finally {
            // 关闭CloseableHttpResponse
            if (response != null) {
                try {
                    response.close();
                } catch (IOException e) {
                  //  log.error(e.getMessage());
                }
            }
        }
        return result;
    }
}