AES 加解密

依赖

 <dependency>
            <groupId>commons-codec</groupId>
            <artifactId>commons-codec</artifactId>
        </dependency>

注意，加密的key需要16位

代码

import org.apache.commons.codec.binary.Base64;

import javax.crypto.Cipher;
import javax.crypto.spec.SecretKeySpec;
import java.nio.charset.StandardCharsets;

public class AESUtils {
    public static String encrypt(String content, String key) {
        try {
            Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
            SecretKeySpec keySpec = new SecretKeySpec(key.getBytes(StandardCharsets.UTF_8), "AES");
            cipher.init(Cipher.ENCRYPT_MODE, keySpec);
            byte[] bytes = content.getBytes(StandardCharsets.UTF_8);
            byte[] result = cipher.doFinal(bytes);
            return Base64.encodeBase64String(result);
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    public static String decrypt(String content, String key) {
        try {
            Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
            SecretKeySpec keySpec = new SecretKeySpec(key.getBytes(StandardCharsets.UTF_8), "AES");
            cipher.init(Cipher.DECRYPT_MODE, keySpec);
            byte[] bytes = Base64.decodeBase64(content);
            byte[] result = cipher.doFinal(bytes);
            return new String(result, StandardCharsets.UTF_8);
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

}