package com.winsun.utils;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import org.apache.http.HttpEntity;
import org.apache.http.client.config.RequestConfig;
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.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.protocol.BasicHttpContext;
import org.apache.http.util.EntityUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.IOException;

/**
 * HTTP请求封装
 *
 *
 */
public class HttpHelper {

	 private static Logger log = LoggerFactory.getLogger(HttpHelper.class);


    /**
     * @desc ：1.发起GET请求
     *
     * @param url
     * @return JSONObject
     * @throws Exception
     */
    public static JSONObject doGet(String url) throws Exception {

        //1.生成一个请求
        HttpGet httpGet = new HttpGet(url);
        //2.配置请求的属性
        RequestConfig requestConfig = RequestConfig.custom().setSocketTimeout(50000).setConnectTimeout(50000).build();//2000
        httpGet.setConfig(requestConfig);

        //3.发起请求，获取响应信息
        //3.1 创建httpClient
        CloseableHttpClient httpClient = HttpClients.createDefault();
        CloseableHttpResponse response = null;
        try {
            //3.2 发起请求，获取响应信息
            response = httpClient.execute(httpGet, new BasicHttpContext());

            //如果返回结果的code不等于200，说明出错了
            if (response.getStatusLine().getStatusCode() != 200) {

               /* log.info("request url failed, http code=" + response.getStatusLine().getStatusCode()
                        + ", url=" + url);*/
                return null;
            }
            //4.解析请求结果
            HttpEntity entity = response.getEntity();      //reponse返回的数据在entity中
            if (entity != null) {
                String resultStr = EntityUtils.toString(entity, "utf-8");  //将数据转化为string格式
               // log.info("GET请求结果："+resultStr);
                JSONObject result = JSON.parseObject(resultStr);    //将String转换为 JSONObject

                if(result.getInteger("errcode")==null) {
                    return result;
                }else if (0 == result.getInteger("errcode")) {
                    return result;
                }else {
                   // log.info("request url=" + url + ",return value="+resultStr);
                   // log.info(resultStr);
                    int errCode = result.getInteger("errcode");
                    String errMsg = result.getString("errmsg");
                    throw new Exception("error code:"+errCode+", error message:"+errMsg);
                }
            }
        } catch (IOException e) {
            log.info( e.getMessage());
        } finally {
            if (response != null) try {
                response.close();                     //释放资源

            } catch (IOException e) {
                e.printStackTrace();
            }
            if(httpClient!=null){
            	httpClient.close();
            }
        }

        return null;
    }


    /** 2.发起POST请求
     * @desc ：
     *
     * @param url   请求url
     * @param data  请求参数（json）
     * @return
     * @throws Exception JSONObject
     */
    public static JSONObject doPost(String url, String data) throws Exception {
        //1.生成一个请求
        HttpPost httpPost = new HttpPost(url);

        //2.配置请求属性
        //2.1 设置请求超时时间
        RequestConfig requestConfig = RequestConfig.custom().setSocketTimeout(100000).setConnectTimeout(100000).build();
        httpPost.setConfig(requestConfig);
        //2.2 设置数据传输格式-json
        httpPost.addHeader("Content-Type", "application/json");
        //2.3 设置请求实体，封装了请求参数
        StringEntity requestEntity = new StringEntity(data, "utf-8");
        httpPost.setEntity(requestEntity);

        //3.发起请求，获取响应信息
        //3.1 创建httpClient
        CloseableHttpClient httpClient = HttpClients.createDefault();
        CloseableHttpResponse response = null;

        try {
            //3.3 发起请求，获取响应
            response = httpClient.execute(httpPost, new BasicHttpContext());

            if (response.getStatusLine().getStatusCode() != 200) {

                log.info("request url failed, http code=" + response.getStatusLine().getStatusCode()
                        + ", url=" + url);
                return null;
            }

            //获取响应内容
            HttpEntity entity = response.getEntity();
            if (entity != null) {
                String resultStr = EntityUtils.toString(entity, "utf-8");
              //  log.info("POST请求结果："+resultStr);

                //解析响应内容
                JSONObject result = JSON.parseObject(resultStr);

                if(result.getInteger("errcode")==null) {
                    return result;
                }else if (0 == result.getInteger("errcode")) {
                    return result;
                }else {
                   /* log.info("request url=" + url + ",return value="+resultStr);*/
                    //log.info(resultStr);
                    int errCode = result.getInteger("errcode");
                    String errMsg = result.getString("errmsg");
                    throw new Exception("error code:"+errCode+", error message:"+errMsg);
                }
            }
        } catch (IOException e) {
            log.error(e.getMessage());
            e.printStackTrace();
        } finally {
            if (response != null) try {
                response.close();              //释放资源

            } catch (IOException e) {
                e.printStackTrace();
            }
            if(httpClient!=null){
            	httpClient.close();
            }
        }

        return null;
    }



}
