package com.nq.utils.http;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Map;

public class HttpClientUtil {

    public static String doPost(String url, Map<String,String> map, String encoding){
        CloseableHttpClient httpClient = null;
        HttpPost httpPost = null;
        String result = null;
        try{
            httpClient = HttpClients.createDefault();
            httpPost = new HttpPost(url);
            //璁剧疆鍙傛暟
            List<NameValuePair> list = new ArrayList<NameValuePair>();
            Iterator iterator = map.entrySet().iterator();
            while(iterator.hasNext()){
                Map.Entry<String,String> elem = (Map.Entry<String, String>) iterator.next();
                list.add(new BasicNameValuePair(elem.getKey(),String.valueOf((String)elem.getValue())));
            }
            if(list.size() > 0){
                UrlEncodedFormEntity entity = new UrlEncodedFormEntity(list,encoding);
                httpPost.setEntity(entity);
            }
            HttpResponse response = httpClient.execute(httpPost);
            if(response != null){
                HttpEntity resEntity = response.getEntity();
                if(resEntity != null){
                    result = EntityUtils.toString(resEntity,encoding);
                }
            }
        }catch(Exception ex){
            ex.printStackTrace();
        }
        return result;
    }
}