springboot-payment/boot-service/src/main/java/com/xwbing/util/KdniaoUtil.java

package com.xwbing.util;

import com.xwbing.exception.UtilException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.*;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLEncoder;
import java.security.MessageDigest;
import java.util.Map;

/**
 * 项目名称: boot-module-demo
 * 创建时间: 2017/11/16 17:46
 * 作者: xiangwb
 * 说明: 快递鸟工具类
 * 文档: http://www.kdniao.com/documents
 */
public class KdniaoUtil {
    private static final Logger LOGGER = LoggerFactory.getLogger(KdniaoUtil.class);

    /**
     * 向指定 URL 发送POST方法的请求
     *
     * @param url    发送请求的 URL
     * @param params 请求的参数集合
     * @return 远程资源的响应结果
     */
    public static String sendPost(String url, Map<String, String> params) {
        OutputStreamWriter out = null;
        BufferedReader in = null;
        StringBuilder result = new StringBuilder();
        try {
            URL realUrl = new URL(url);
            HttpURLConnection conn = (HttpURLConnection) realUrl.openConnection();
            // 发送POST请求必须设置如下两行
            conn.setDoOutput(true);
            conn.setDoInput(true);
            // POST方法
            conn.setRequestMethod("POST");
            // 设置通用的请求属性
            conn.setRequestProperty("accept", "*/*");
            conn.setRequestProperty("connection", "Keep-Alive");
            conn.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
            conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
            conn.connect();
            // 获取URLConnection对象对应的输出流
            out = new OutputStreamWriter(conn.getOutputStream(), "UTF-8");
            // 发送请求参数
            if (params != null) {
                StringBuilder param = new StringBuilder();
                for (Map.Entry<String, String> entry : params.entrySet()) {
                    if (param.length() > 0) {
                        param.append("&");
                    }
                    param.append(entry.getKey());
                    param.append("=");
                    param.append(entry.getValue());
                    System.out.println(entry.getKey() + ":" + entry.getValue());
                }
                System.out.println("param:" + param.toString());
                out.write(param.toString());
            }
            // flush输出流的缓冲
            out.flush();
            // 定义BufferedReader输入流来读取URL的响应
            in = new BufferedReader(new InputStreamReader(conn.getInputStream(), "UTF-8"));
            String line;
            while ((line = in.readLine()) != null) {
                result.append(line);
            }
        } catch (Exception e) {
            LOGGER.error(e.getMessage());
            throw new UtilException("快递鸟接口请求失败");
        }
        // 使用finally块来关闭输出流、输入流
        finally {
            try {
                if (out != null) {
                    out.close();
                }
                if (in != null) {
                    in.close();
                }
            } catch (IOException ex) {
                ex.printStackTrace();
            }
        }
        return result.toString();
    }

    /**
     * @param str     内容
     * @param charset 编码方式
     * @return
     */
    public static String urlEncoder(String str, String charset) {
        try {
            return URLEncoder.encode(str, charset);
        } catch (UnsupportedEncodingException e) {
            LOGGER.error(e.getMessage());
            throw new UtilException("urlEncoder失败");
        }
    }

    /**
     * 电商Sign签名生成
     *
     * @param content  内容
     * @param keyValue Appkey
     * @param charset  编码方式
     * @return DataSign签名
     * @throws Exception
     */
    public static String encrypt(String content, String keyValue, String charset) {
        try {
            if (keyValue != null) {
                return base64(MD5(content + keyValue, charset), charset);
            }
            return base64(MD5(content, charset), charset);
        } catch (Exception e) {
            LOGGER.error(e.getMessage());
            throw new UtilException("快递鸟签名出错");
        }
    }

    private static char[] base64EncodeChars = new char[]{'A', 'B', 'C', 'D',
            'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q',
            'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', 'a', 'b', 'c', 'd',
            'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q',
            'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', '0', '1', '2', '3',
            '4', '5', '6', '7', '8', '9', '+', '/'};

    /**
     * MD5加密
     *
     * @param str     内容
     * @param charset 编码方式
     */
    private static String MD5(String str, String charset) {
        try {
            MessageDigest md = MessageDigest.getInstance("MD5");
            md.update(str.getBytes(charset));
            byte[] result = md.digest();
            StringBuilder sb = new StringBuilder(32);
            for (byte aResult : result) {
                int val = aResult & 0xff;
                if (val <= 0xf) {
                    sb.append("0");
                }
                sb.append(Integer.toHexString(val));
            }
            return sb.toString().toLowerCase();
        } catch (Exception e) {
            LOGGER.error(e.getMessage());
            throw new UtilException("快递鸟加密出错");
        }
    }

    /**
     * base64编码
     *
     * @param str     内容
     * @param charset 编码方式
     */
    private static String base64(String str, String charset) {
        try {
            return base64Encode(str.getBytes(charset));
        } catch (UnsupportedEncodingException e) {
            LOGGER.error(e.getMessage());
            throw new UtilException("快递鸟编码出错");
        }
    }

    private static String base64Encode(byte[] data) {
        StringBuilder sb = new StringBuilder();
        int len = data.length;
        int i = 0;
        int b1, b2, b3;
        while (i < len) {
            b1 = data[i++] & 0xff;
            if (i == len) {
                sb.append(base64EncodeChars[b1 >>> 2]);
                sb.append(base64EncodeChars[(b1 & 0x3) << 4]);
                sb.append("==");
                break;
            }
            b2 = data[i++] & 0xff;
            if (i == len) {
                sb.append(base64EncodeChars[b1 >>> 2]);
                sb.append(base64EncodeChars[((b1 & 0x03) << 4)
                        | ((b2 & 0xf0) >>> 4)]);
                sb.append(base64EncodeChars[(b2 & 0x0f) << 2]);
                sb.append("=");
                break;
            }
            b3 = data[i++] & 0xff;
            sb.append(base64EncodeChars[b1 >>> 2]);
            sb.append(base64EncodeChars[((b1 & 0x03) << 4)
                    | ((b2 & 0xf0) >>> 4)]);
            sb.append(base64EncodeChars[((b2 & 0x0f) << 2)
                    | ((b3 & 0xc0) >>> 6)]);
            sb.append(base64EncodeChars[b3 & 0x3f]);
        }
        return sb.toString();
    }
}