快遞100通過快遞單號實時查詢物流信息

import com.alibaba.fastjson.JSON;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLEncoder;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.*;

/**
 * 快遞100實時查詢物流信息工具類
 */
public class Express100Util {

    /**
     * 企業授權key（在快遞100官網申請api獲取）
     */
    private static final String KEY="*******";
    /**
     * 企業公司編號（在快遞100官網申請api獲取）
     */
    private static final String CUSTOMER="***********";

    /**
     * 實時查詢請求地址（固定值）
     */
    private static final String SYNQUERY_URL = "http://poll.kuaidi100.com/poll/query.do";

    /**
     * 智能識別請求地址（固定值）
     */
    private static final String DISCERN_URL = "http://www.kuaidi100.com/autonumber/auto";

    /**
     * @Title: getExpressMessage
     * @Description: 獲取快遞信息
     * @param com 快遞公司編碼
     * @param num 快遞單號
     * @return String
     */
    public static String getExpressMessage(String com,String num){

        //獲取param
        String param = getParam(com, num);

        Map<String, String> params = new HashMap<String, String>();
        params.put("customer",CUSTOMER);
        //進行MD5加密獲取sign簽名，用於驗證身份
        String sign = MD5Util.encode(param + KEY + CUSTOMER);
        params.put("sign", sign);
        params.put("param", param);
        //發送post請求獲取快遞信息
        String post = post(SYNQUERY_URL,params);
        return post;
    }

    /**
     * 獲取快遞公司編碼
　　　* @param num 快遞單號
     */
    public static List<String> getCom(String num){
        Map<String, String> params = new HashMap<String, String>();
        params.put("num",num);
        params.put("key",KEY);
        //獲取到String類型的快遞公司編碼集合：
        String post = post(DISCERN_URL, params);
        //
        List<Map<String, Object>> mapList = (List<Map<String, Object>>) JSON.parse(post);
        ArrayList<String> coms = new ArrayList<>();
        System.out.println(mapList);
        for (Map<String, Object> map : mapList) {
            String comCode = (String)map.get("comCode");
            coms.add(comCode);
        }
        return coms;
    }

    /**
     * 獲取param
     */
    private static String getParam(String com,String num){

        int resultv2 = 0;    //行政區域解析 0:關閉（預設）； 1:開通； 2：開通行政解析功能並且返回出發、目的及當前城市信息

        StringBuilder param = new StringBuilder("{");
        param.append("\"com\":\"").append(com).append("\"");
        param.append(",\"num\":\"").append(num).append("\"");
        if(1 == resultv2) {
            param.append(",\"resultv2\":1");
        } else {
            param.append(",\"resultv2\":0");
        }
        param.append("}");

        return param.toString();
    }

    /**
     * 向快遞100發送post請求
     */
    private static String post(String reqUrl,Map<String, String> params) {
        StringBuffer response = new StringBuffer("");

        BufferedReader reader = null;
        try {
            StringBuilder builder = new StringBuilder();
            for (Map.Entry<String, String> param : params.entrySet()) {
                if (builder.length() > 0) {
                    builder.append('&');
                }
                builder.append(URLEncoder.encode(param.getKey(), "UTF-8"));
                builder.append('=');
                builder.append(URLEncoder.encode(String.valueOf(param.getValue()), "UTF-8"));
            }
            byte[] bytes = builder.toString().getBytes("UTF-8");

            URL url = new URL(reqUrl);
            HttpURLConnection conn = (HttpURLConnection) url.openConnection();
            conn.setConnectTimeout(3000);
            conn.setReadTimeout(3000);
            conn.setRequestMethod("POST");
            conn.setRequestProperty("accept", "*/*");
            conn.setRequestProperty("connection", "Keep-Alive");
            conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
            conn.setRequestProperty("Content-Length", String.valueOf(bytes.length));
            conn.setDoOutput(true);
            conn.getOutputStream().write(bytes);

            reader = new BufferedReader(new InputStreamReader(conn.getInputStream(), "UTF-8"));

            String line = "";
            while ((line = reader.readLine()) != null) {
                response.append(line);
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                if (null != reader) {
                    reader.close();
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
        }

        return response.toString();
    }


    //獲取快遞公司編碼測試
    public static void main(String[] args) {
        Map<String, String> params = new HashMap<String, String>();
        params.put("num","3950055201640");
        params.put("key",KEY);
//        String post = post(DISCERN_URL, params);
        String post = "[{\"lengthPre\":13,\"comCode\":\"yunda\",\"noPre\":\"395\",\"noCount\":36463},{\"lengthPre\":13,\"comCode\":\"shunfen\",\"noPre\":\"395\",\"noCount\":36463}]";
        System.out.println(post);
        List<Map<String, Object>> mapList = (List<Map<String, Object>>) JSON.parse(post);
        ArrayList<String> cms = new ArrayList<>();
        System.out.println(mapList);
        for (Map<String, Object> map : mapList) {
            String comCode = (String)map.get("comCode");
            cms.add(comCode);
        }
        System.out.println(cms);
    }

    //快遞查詢測試
    /*public static void main(String[] args) {
        //快遞公司編碼
        String com = "yunda";
        //快遞單號
        String num = "3950055201640";
        String expressMessage = getExpressMessage(com, num);
        System.out.println(expressMessage);
    }*/

}

/**
 * md5加密
 */
class MD5Util {
    private static MessageDigest mdigest = null;
    private static char digits[] = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'};

    private static MessageDigest getMdInst() {
        if (null == mdigest) {
            try {
                mdigest = MessageDigest.getInstance("MD5");
            } catch (NoSuchAlgorithmException e) {
                e.printStackTrace();
            }
        }
        return mdigest;
    }

    public static String encode(String s) {
        if(null == s) {
            return "";
        }

        try {
            byte[] bytes = s.getBytes();
            getMdInst().update(bytes);
            byte[] md = getMdInst().digest();
            int j = md.length;
            char str[] = new char[j * 2];
            int k = 0;
            for (int i = 0; i < j; i++) {
                byte byte0 = md[i];
                str[k++] = digits[byte0 >>> 4 & 0xf];
                str[k++] = digits[byte0 & 0xf];
            }
            return new String(str);
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }
}