springboot 简单设置mysql用户名密码加密

如何将yml文件中暴露的数据库用户名和密码由明文改为密文，提高安全性。

个人觉得是最简单的方式实现

yml代码，用户名密码使用文章后面提供的加密算法或者自行寻找方法

spring:
  datasource:
    driver-class-name: com.mysql.cj.jdbc.Driver
    url: jdbc:mysql://localhost:3306/test?serverTimezone=GMT%2B8&useUnicode=true&characterEncoding=UTF-8
    username: 这是密文用户名
    password: 这是密文密码

配置DataSource的bean（加密解密方法可自行寻找）

@Configuration
public class DataSourceConfig {

    @Value("${spring.datasource.url}")
    private String url;

    @Value("${spring.datasource.username}")
    private String username;

    @Value("${spring.datasource.password}")
    private String password;

    @Value("${spring.datasource.driver-class-name}")
    private String driverClassName;

    @Bean
    @Primary
    public DataSource dataSource() {
        DruidDataSource druidDataSource = new DruidDataSource();
        druidDataSource.setUrl(url);
        // 这里把从yml文件拿到的用户名密码解密即可
        druidDataSource.setUsername(SymmetricCryptoUtil.decString(username));
        druidDataSource.setPassword(SymmetricCryptoUtil.decString(password));
        druidDataSource.setDriverClassName(driverClassName);
        return druidDataSource;
    }

提供一个网上找的hutool的加密解密类（https://blog.csdn.net/Dong_Zi8/article/details/125196560）

public class SymmetricCryptoUtil {
    /**
     * 16字节
     */
    private static final String ENCODE_KEY = "1234567812345678";
    private static final String IV_KEY = "0000000000000000";

    /**
     * 加密
     * @param string string
     * @return
     */
    public static String encString(String string){
        return encryptFromString(string, Mode.CBC, Padding.ZeroPadding);
    }

    public static String decString(String string) {
        return decryptFromString(string, Mode.CBC, Padding.ZeroPadding);
    }

    public static String encryptFromString(String data, Mode mode, Padding padding) {
        AES aes;
        if (Mode.CBC == mode) {
            aes = new AES(mode, padding,
                    new SecretKeySpec(ENCODE_KEY.getBytes(), "AES"),
                    new IvParameterSpec(IV_KEY.getBytes()));
        } else {
            aes = new AES(mode, padding,
                    new SecretKeySpec(ENCODE_KEY.getBytes(), "AES"));
        }
        return aes.encryptBase64(data, StandardCharsets.UTF_8);
    }

    public static String decryptFromString(String data, Mode mode, Padding padding) {
        AES aes;
        if (Mode.CBC == mode) {
            aes = new AES(mode, padding,
                    new SecretKeySpec(ENCODE_KEY.getBytes(), "AES"),
                    new IvParameterSpec(IV_KEY.getBytes()));
        } else {
            aes = new AES(mode, padding,
                    new SecretKeySpec(ENCODE_KEY.getBytes(), "AES"));
        }
        byte[] decryptDataBase64 = aes.decrypt(data);
        return new String(decryptDataBase64, StandardCharsets.UTF_8);
    }
}

完毕