SpringBoot对接微信商家转账功能

实现步骤及代码演示

引入依赖

常量类

姓名加密工具类

package com.office.admin.utils;

import javax.crypto.BadPaddingException;
import javax.crypto.Cipher;
import javax.crypto.IllegalBlockSizeException;
import javax.crypto.NoSuchPaddingException;
import java.nio.charset.StandardCharsets;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.security.PrivateKey;
import java.security.cert.X509Certificate;
import java.util.Base64;

public class RsaCryptoUtil {
          
   

    /**
     * 加密
     */
    public static String encryptOAEP(String message, X509Certificate certificate)
            throws IllegalBlockSizeException {
          
   
        try {
          
   
            Cipher cipher = Cipher.getInstance("RSA/ECB/OAEPWithSHA-1AndMGF1Padding");
            cipher.init(Cipher.ENCRYPT_MODE, certificate.getPublicKey());

            byte[] data = message.getBytes(StandardCharsets.UTF_8);
            byte[] ciphertext = cipher.doFinal(data);
            return Base64.getEncoder().encodeToString(ciphertext);
        } catch (NoSuchAlgorithmException | NoSuchPaddingException e) {
          
   
            throw new RuntimeException("当前Java环境不支持RSA v1.5/OAEP", e);
        } catch (InvalidKeyException e) {
          
   
            throw new IllegalArgumentException("无效的证书", e);
        } catch (IllegalBlockSizeException | BadPaddingException e) {
          
   
            throw new IllegalBlockSizeException("加密原串的长度不能超过214字节");
        }
    }

    public static String decryptOAEP(String ciphertext, PrivateKey privateKey)
            throws BadPaddingException {
          
   
        try {
          
   
            Cipher cipher = Cipher.getInstance("RSA/ECB/OAEPWithSHA-1AndMGF1Padding");
            cipher.init(Cipher.DECRYPT_MODE, privateKey);

            byte[] data = Base64.getDecoder().decode(ciphertext);
            return new String(cipher.doFinal(data), StandardCharsets.UTF_8);
        } catch (NoSuchPaddingException | NoSuchAlgorithmException e) {
          
   
            throw new RuntimeException("当前Java环境不支持RSA v1.5/OAEP", e);
        } catch (InvalidKeyException e) {
          
   
            throw new IllegalArgumentException("无效的私钥", e);
        } catch (BadPaddingException | IllegalBlockSizeException e) {
          
   
            throw new BadPaddingException("解密失败");
        }
    }
}

发起商家转账代码

完成！！！