Springboot实现对配置文件中的明文密码加密详解

spring:
  # 数据库链接配置
  datasource:
    url: jdbc:mysql://xx.xx.xx.xx:3306/database
    driver-class-name: com.mysql.cj.jdbc.Driver
    username: root
    password: "123456"

spring:
  # 数据库链接配置
  datasource:
    url: jdbc:mysql://xx.xx.xx.xx:3306/database
    driver-class-name: com.mysql.cj.jdbc.Driver
    username: root
    password: "AES(DzANBAhBWXxZqAOsagIBCoaw8FV4gYRbid7G70UEM24=)"

public class PropertySourcePostProcessor implements BeanFactoryPostProcessor {
​
  private ConfigurableEnvironment environment;
​
  public PropertySourcePostProcessor(ConfigurableEnvironment environment) {
    this.environment = environment;
  }
​
  @Override
  public void postProcessBeanFactory(ConfigurableListableBeanFactory beanFactory) throws BeansException {
    // 从ConfigurableEnvironment中取出所有的配置数据
    MutablePropertySources propertySources = this.environment.getPropertySources();
    propertySources.stream()
        // 过滤不需要包装的对象
        .filter(s -> !noWrapPropertySource(s))
        // 包装所有的PropertySource
        .map(s -> new EncryPropertySource(s))
        .collect(Collectors.toList())
        // 替换掉propertySources中的PropertySource
        .forEach(wrap -> propertySources.replace(wrap.getName(), wrap));
  }
​
  private boolean noWrapPropertySource(PropertySource propertySource) {
    return propertySource instanceof EncryPropertySource || StringUtils.equalsAny(propertySource.getClass().getName(), "org.springframework.core.env.PropertySource$StubPropertySource", "org.springframework.boot.context.properties.source.ConfigurationPropertySourcesPropertySource");
  }
}

     <dependency>
            <groupId>com.github.ulisesbocchio</groupId>
            <artifactId>jasypt-spring-boot-starter</artifactId>
            <version>3.0.5</version>
        </dependency>

jasypt:
  encryptor:
    # 密钥
    password: ""
    property:
      # 密文前缀
      prefix: ""
      # 密文后缀
      suffix: ""

spring:
  datasource:
    password: "ENC(DzANBAhBWXxZqAOsagIBCoaw8FV4gYRbid7G70UEM24=)"

@Bean("jasyptStringEncryptor")
  public StringEncryptor jasyptStringEncryptor(){
    return new StringEncryptor() {
      @Override
      public String encrypt(String s) {
        // TODO 加密
        return null;
      }
​
      @Override
      public String decrypt(String s) {
        // TODO 解密
        return null;
      }
    };
  }

jasypt:
  encryptor:
    # 自定义StringEncryptor的BeanName
    bean: ""

@Component
public class StringEncryptorUtil{
  @Autowired
  private StringEncryptor encryptor;
  
  public void encrypt(){
    String result = encryptor.encrypt("123456");
    System.out.println(result);
  }
}