Java中AES/CBC/PKCS7Padding如何进行加解密？这个问题可能是我们日常学习或工作经常见到的。希望通过这个问题能让你收获颇深。下面是小编给大家带来的参考内容，让我们一起来看看吧！

最近项目需要选择一套对称加密算法，来满足前后端之间的加解密操作。初步打算前端使用crypto-js来实现，后端使用java本身的加密算法实现,但遇到了一个问题：java本身只支持NoPadding和PKCS5Padding,而crypto-js提供的padding方式没有PKCS5Padding，所以不得以，前后端最终使用PKCS7Padding来实现功能.因此只能通过引入第三方jar包的方式让jave支持pkcs7padding

引入依赖

<dependency><groupId>org.bouncycastle</groupId><artifactId>bcprov-jdk16</artifactId><version>1.46</version></dependency>

完整代码

package com.hzjd.miniapp.util;import java.security.Security;import java.security.spec.AlgorithmParameterSpec;import javax.crypto.Cipher;import javax.crypto.spec.IvParameterSpec;import javax.crypto.spec.SecretKeySpec;import org.apache.commons.codec.binary.Base64;import org.apache.commons.lang.StringUtils;import org.bouncycastle.jce.provider.BouncyCastleProvider;import com.sun.istack.internal.NotNull;public class AESUtil {private static final String CHARSET_NAME = "UTF-8";private static final String AES_NAME = "AES";// 加密模式public static final String ALGORITHM = "AES/CBC/PKCS7Padding";// 密钥public static final String KEY = "1954682168745975";// 偏移量public static final String IV = "1954682168745975";static {Security.addProvider(new BouncyCastleProvider());}/** * 加密 * * @param content * @param key * @return */public String encrypt(@NotNull String content) {byte[] result = null;try {Cipher cipher = Cipher.getInstance(ALGORITHM);SecretKeySpec keySpec = new SecretKeySpec(KEY.getBytes(CHARSET_NAME), AES_NAME);AlgorithmParameterSpec paramSpec = new IvParameterSpec(IV.getBytes());cipher.init(Cipher.ENCRYPT_MODE, keySpec, paramSpec);result = cipher.doFinal(content.getBytes(CHARSET_NAME));} catch (Exception e) {e.printStackTrace();}return Base64.encodeBase64String(result);}/** * 解密 * * @param content * @param key * @return */public String decrypt(@NotNull String content) {try {Cipher cipher = Cipher.getInstance(ALGORITHM);SecretKeySpec keySpec = new SecretKeySpec(KEY.getBytes(CHARSET_NAME), AES_NAME);AlgorithmParameterSpec paramSpec = new IvParameterSpec(IV.getBytes());cipher.init(Cipher.DECRYPT_MODE, keySpec, paramSpec);return new String(cipher.doFinal(Base64.decodeBase64(content)), CHARSET_NAME);} catch (Exception e) {e.printStackTrace();}return StringUtils.EMPTY;}public static void main(String[] args) {AESUtil aes = new AESUtil();String contents = "121456465";String encrypt = aes.encrypt(contents);System.out.println("加密后:" + encrypt);String decrypt = aes.decrypt(encrypt);System.out.println("解密后:" + decrypt);}}

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