一、环境搭建：

1、先安装开发工具：

推荐idea,下载macOS操作系统

idea激活码点击这里汇聚了很多

2、安装Java环境jdk

下载链接

2.1、一路双击，继续安装，输入密码就可以安装成功。

2.2、检查终端Java是否安装成功

3、安装go环境

官网下载安装包

安装完毕会在home目录下usr/local/go默认的安装目录。然后这个时候可以配置下环境变量

~/.bash_profile  export GOPATH=$HOME/go  保存退出，然后激活配置文件  source ~/.bash_profile  测试下是否安装成功  这里注意如果提示你权限不够的话需要使用sudo去执行  比如你现在创建个文件夹在go的安装目录s r c下面  sudo mkdir test  sudo vim hello.go  sudo build hello.go  sudo go run hello.go  然后可以看到输出了hello world。

4、开发加密Java类

package com.xcxyz.cipher;    import javax.crypto.Cipher;  import java.security.Key;  import java.security.Security;    public class CipherEncryptUtil {      private Cipher encryptCipher = null;        public static String byteArr2HexStr(byte[] arrB) throws Exception {          int iLen = arrB.length;          StringBuilder sb = new StringBuilder(iLen * 2);          for (int i = 0; i < iLen; i++) {              int intTmp = arrB[i];              while (intTmp < 0) {                  intTmp = intTmp + 256;              }              if (intTmp < 16) {                  sb.append("0");              }              sb.append(Integer.toString(intTmp, 16));          }          return sb.toString();      }        public CipherEncryptUtil(String strKey) throws Exception {          Security.addProvider(new com.sun.crypto.provider.SunJCE());          Key key = getKey(strKey.getBytes());          encryptCipher = Cipher.getInstance("DES");          encryptCipher.init(Cipher.ENCRYPT_MODE, key);      }        public byte[] encrypt(byte[] arrB) throws Exception {          return encryptCipher.doFinal(arrB);      }        public String encrypt(String strIn) throws Exception {          return byteArr2HexStr(encrypt(strIn.getBytes()));      }        private Key getKey(byte[] arrBTmp) throws Exception {          byte[] arrB = new byte[8];          for (int i = 0; i < arrBTmp.length && i < arrB.length; i++) {              arrB[i] = arrBTmp[i];          }          Key key = new javax.crypto.spec.SecretKeySpec(arrB, "DES");          return key;      }        public static void main(String[] args) throws Exception {          CipherEncryptUtil desUtils = new CipherEncryptUtil("秘钥");          String encryptStr = desUtils.encrypt("加密字符串");          System.out.println(encryptStr);      }  }

5、开发解密Java类

package com.xcxyz.cipher;    import javax.crypto.Cipher;  import java.security.Key;  import java.security.Security;    public class CipherDecruptUtil {      private Cipher decryptCipher = null;        public static byte[] hexStr2ByteArr(String strIn) throws Exception {          byte[] arrB = strIn.getBytes();          int iLen = arrB.length;  // 两个字符表示一个字节，所以字节数组长度是字符串长度除以2          byte[] arrOut = new byte[iLen / 2];          for (int i = 0; i < iLen; i = i + 2) {              String strTmp = new String(arrB, i, 2);              arrOut[i / 2] = (byte) Integer.parseInt(strTmp, 16);          }          return arrOut;      }        public CipherDecruptUtil(String strKey) throws Exception {          Security.addProvider(new com.sun.crypto.provider.SunJCE());          Key key = getKey(strKey.getBytes());          decryptCipher = Cipher.getInstance("DES");          decryptCipher.init(Cipher.DECRYPT_MODE, key);      }        public byte[] decrypt(byte[] arrB) throws Exception {          return decryptCipher.doFinal(arrB);      }        public String decrypt(String strIn) throws Exception {          return new String(decrypt(hexStr2ByteArr(strIn)));      }          private Key getKey(byte[] arrBTmp) throws Exception {          byte[] arrB = new byte[8];          for (int i = 0; i < arrBTmp.length && i < arrB.length; i++) {              arrB[i] = arrBTmp[i];          }          Key key = new javax.crypto.spec.SecretKeySpec(arrB, "DES");          return key;      }          public static void main(String[] args) throws Exception {          CipherDecruptUtil desUtils = new CipherDecruptUtil("秘钥");          String encryptStr = desUtils.decrypt("bfffa5db87cf3cdd1d75d86e3738ff6f");          System.out.println(encryptStr);      }  }

6、写一个main函数

package com.xcxyz;    import com.xcxyz.cipher.CipherEncryptUtil;    public class Main {        public static void main(String[] args) throws Exception{  	// write your code here          if (args.length != 2){              throw new Exception("must input two args for key and strIn");          }          CipherEncryptUtil encrypUtils = new CipherEncryptUtil(args[0]);          String encryptStr = encrypUtils.encrypt(args[1]);          System.out.println(encryptStr);    //        CipherEncryptUtil encrypUtils = new CipherEncryptUtil("秘钥");  //        String encryptStr = encrypUtils.encrypt("加密字符串");  //        System.out.println(encryptStr);  //  //        CipherDecruptUtil decruptUtils = new CipherDecruptUtil("秘钥");  //        String decryptStr = decruptUtils.decrypt(encryptStr);  //        System.out.println(decryptStr);      }  }

7、执行idea导出Java可执行jar包

1、首先点开File文件下的Project Structure  2、选择Artifacts—->点击蓝色的“+”  3、选中jar—>From modules with dependencies  4、注意Main Class的添加，此处就是选择你要生成的jar包的工程文件  5、.MF文件就是你生成jar包生成的签名信息，第一次生成jar包，会生成相应的.MF签名文件，若第二次再生成jar包，会报错，说已经存在，只需将.MF文件删除即可  6、选择输出的目录，即Output Directory  7.勾选Build on make 点击ok  8、Build——>Make Project