Java实现数据字典主键转换

Java实现数据字典主键转换可以使用Java加密库或哈希库来实现。以下是使用Java加密库和哈希库的示例代码：

1. 使用Java加密库实现数据字典主键转换：

import javax.crypto.Cipher;
import javax.crypto.spec.SecretKeySpec;
import java.util.Base64;

public class DataDictionaryConverter {
    private static final String SECRET_KEY = "mySecretKey"; // 密钥

    public static String encrypt(String plainText) throws Exception {
        SecretKeySpec keySpec = new SecretKeySpec(SECRET_KEY.getBytes(), "AES");
        Cipher cipher = Cipher.getInstance("AES");
        cipher.init(Cipher.ENCRYPT_MODE, keySpec);
        byte[] cipherText = cipher.doFinal(plainText.getBytes());
        return Base64.getEncoder().encodeToString(cipherText);
    }

    public static void main(String[] args) throws Exception {
        String plainText = "1234567890";
        String cipherText = encrypt(plainText);
        System.out.println(cipherText); // 输出加密后的结果
    }
}

2. 使用Java哈希库实现数据字典主键转换：

import java.nio.charset.StandardCharsets;
import java.security.MessageDigest;

public class DataDictionaryConverter {
    public static String hash(String plainText) throws Exception {
        MessageDigest digest = MessageDigest.getInstance("SHA-256");
        byte[] hash = digest.digest(plainText.getBytes(StandardCharsets.UTF_8));
        StringBuilder hexString = new StringBuilder();
        for (byte b : hash) {
            String hex = Integer.toHexString(0xff & b);
            if (hex.length() == 1) hexString.append('0');
            hexString.append(hex);
        }
        return hexString.toString();
    }

    public static void main(String[] args) throws Exception {
        String plainText = "1234567890";
        String hashText = hash(plainText);
        System.out.println(hashText); // 输出哈希后的结果
    }
}

以上代码仅为示例，实际应用中需要根据具体需求进行修改和优化。