package com.cn.jg.util;

import java.io.IOException;
import java.io.UnsupportedEncodingException;

import javax.servlet.http.HttpServletRequest;

import org.apache.commons.codec.binary.Base64;
import org.apache.http.HttpHeaders;
import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpUriRequest;
import org.apache.http.client.methods.RequestBuilder;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.cn.jg.util.GlobalNameUtil;

public class HttpClientUtil {
	private static final Logger LOG = LoggerFactory.getLogger(HttpClientUtil.class);

	
	public static String getHttpData(HttpServletRequest req,String url) {
		 HttpClient client = HttpClients.custom().build();
		
	        HttpUriRequest request = RequestBuilder.get().setUri(url)
	                .setHeader(HttpHeaders.CONTENT_TYPE, "application/json").setHeader(HttpHeaders.AUTHORIZATION, authorizationHeader(GlobalNameUtil.DEFAULT_USER,GlobalNameUtil.DEFAULT_PASS)).build();
	        HttpResponse response;
	        String data=null;
			try {
				response = client.execute(request);
				 data=EntityUtils.toString(response.getEntity());
			} catch (ClientProtocolException e1) {
				LOG.info("http協議錯誤 ",e1);
				e1.printStackTrace();
			} catch (IOException e1) {
				LOG.info("http網路異常 ",e1);
				e1.printStackTrace();
			}
	       
		return data;
	}
	 private static String authorizationHeader(final String username, final String password) {
	        final String auth = username + ":" + password;
	       final  byte[] encodedAuth = Base64.encodeBase64(auth.getBytes());
	        return "Basic " + new String(encodedAuth);
	        
	    }
	 public static void main(String[] args) {
		System.out.println(authorizationHeader("pub","pub"));
	}
	 
	 public static String postHttpDatas(HttpServletRequest req,String url,String value) throws UnsupportedEncodingException {
		 HttpClient client = HttpClients.custom().build();
		//value json型別的資料  轉換成entity實體傳輸
		 StringEntity datas=new StringEntity(value,"utf-8");
		 //url請求路徑
		 HttpUriRequest request = RequestBuilder.post().setUri(url).setEntity(datas)
				 //設定字元編碼 並設定http Authorization  http basic認證
	                .setHeader(HttpHeaders.CONTENT_TYPE, "application/json").setHeader(HttpHeaders.AUTHORIZATION, authorizationHeader(GlobalNameUtil.DEFAULT_USER,GlobalNameUtil.DEFAULT_PASS)).build();
		 HttpResponse response;
	        String data=null;
			try {
				response = client.execute(request);
				//獲取請求的資料
				 data=EntityUtils.toString(response.getEntity());
			} catch (ClientProtocolException e1) {
				LOG.info("http協議錯誤 ",e1);
				e1.printStackTrace();
			} catch (IOException e1) {
				LOG.info("http網路異常 ",e1);
				e1.printStackTrace();
			}
		return data;
	}
}