java-md5加密学习笔记

package com.example.demo.testng;

import org.testng.annotations.Test;
import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.security.MessageDigest;

public class TestngMain {

      public static String getMD5Str(String inStr) {
            System.out.println(inStr);
            MessageDigest md5 = null;
            try {
                md5 = MessageDigest.getInstance("MD5");
            } catch (Exception e) {
                System.out.println(e.toString());
                e.printStackTrace();
                return "";
            }
            char[] charArray = inStr.toCharArray();
            byte[] byteArray = new byte[charArray.length];

            for (int i = 0; i < charArray.length; i++)
                byteArray[i] = (byte) charArray[i];

            byte[] md5Bytes = md5.digest(byteArray);

            StringBuffer hexValue = new StringBuffer();

            for (int i = 0; i < md5Bytes.length; i++) {
                int val = ((int) md5Bytes[i]) & 0xff;
                if (val < 16)
                    hexValue.append("0");
                hexValue.append(Integer.toHexString(val));
            }

            return hexValue.toString();
        }

        public static String sendPostRequest(URL url, String CharSet, String postData)
                throws Throwable {
            System.out.println(url+"?"+postData);
            HttpURLConnection con;
            con = (HttpURLConnection) url.openConnection();
            con.setRequestMethod("POST");
            con.setConnectTimeout(6000);
            con.setReadTimeout(6000);
            con.setDoOutput(true);
            con.setDoInput(true);
            con.setRequestProperty("contentType",CharSet);
            OutputStream os = con.getOutputStream();
            DataOutputStream dos = new DataOutputStream(os);
            dos.write(postData.getBytes());
            dos.flush();
            dos.close();
            InputStream in = con.getInputStream();
            BufferedReader dis = new BufferedReader(new InputStreamReader(in,CharSet));
            String data = "", line = "";
            while ((line = dis.readLine()) != null) {
                data += line;
            }
//          data = new String(data.getBytes(CharSet),"utf-8");
            if (in != null) {
                in.close();
            }
            if (dis != null) {
                dis.close();
            }
            if (con != null) {
                con.disconnect();
            }
            return data;
        }

        public static void main(String[] args) throws Throwable {
            Long sendtime =  System.currentTimeMillis();
            String content = "{\"code\":\"88888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888810011001100110011001100110011001100110011001100110011001100110011001100110011001100110011001100110011001100110011001\"}";
            String toAddress= "18288888888";

            String type="1059";

            String appId="2015878";
            String appKey="79a245e041b8d6007d612eae03c1akdind";
            String token = getMD5Str(java.net.URLEncoder.encode(content+toAddress+type+appId+appKey+sendtime+"syswintoon", "utf-8")).toLowerCase();
            String urlstr= "http://192.168.235.55/sendsms.do";
            try {
                URL url = new URL(urlstr);
                System.out.println("token : "+token);
                System.out.println("sendtime : "+sendtime);
                System.out.println(sendPostRequest(url,"utf-8","content="+content+"&toAddress="+toAddress+"&type="+type+"&appId="+appId+"&sendTime="+sendtime+"&token="+token+"&retry=0"));
          } catch (IOException e) {
                e.printStackTrace();
            }

        }

}