Jasypt安全框架提供了Spring的集成，主要是实现

PlaceholderConfigurerSupport类或者其子类。

在Sring 3.1之后，则推荐使用PropertySourcesPlaceholderConfigurer类作为属性替换配置类，这里Spring集成Jasypt则使用Jasypt对属性替换配置类的实现。EncryptablePropertySourcesPlaceholderConfigurer。

在Spring中集成比较容易，而且Jasypt官方也给出了配置Bean的方式和使用Jasypt标签的XML方式，而Spring boot集成就稍微有点不一样，需要创建一个自动配置类，并且创建一个注入PlaceholderConfigurerSupport的jasypt实现了的Bean .

下面是一个使用示例：

import org.jasypt.encryption.pbe.StandardPBEByteEncryptor;

import org.jasypt.encryption.pbe.StandardPBEStringEncryptor;

import org.jasypt.spring31.properties.EncryptablePropertySourcesPlaceholderConfigurer;

import org.springframework.boot.autoconfigure.AutoConfigureOrder;

import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;

import org.springframework.boot.autoconfigure.condition.SearchStrategy;

import org.springframework.context.annotation.Bean;

import org.springframework.context.annotation.Configuration;

import org.springframework.context.support.PropertySourcesPlaceholderConfigurer;

import org.springframework.core.Ordered;

import org.springframework.core.io.ClassPathResource;

/**

 * Author : secondriver

 * Date   : 2016/5/26

 */

@Configuration

@AutoConfigureOrder(Ordered.HIGHEST_PRECEDENCE)

public class EncryptPropertyPlaceholderAutoConfiguration {

    private static final String SECURITY_PROPERTIES_FILE = "security.properties";

    @Bean

    @ConditionalOnMissingBean(search = SearchStrategy.CURRENT)

    public static PropertySourcesPlaceholderConfigurer propertySourcesPlaceholderConfigurer() {

        StandardPBEStringEncryptor encryptor = new StandardPBEStringEncryptor();

        encryptor.setAlgorithm(StandardPBEByteEncryptor.DEFAULT_ALGORITHM);

        encryptor.setPassword("security");

        EncryptablePropertySourcesPlaceholderConfigurer

                configurer = new EncryptablePropertySourcesPlaceholderConfigurer(encryptor);

        configurer.setLocation(new ClassPathResource(SECURITY_PROPERTIES_FILE));

        return configurer;

    }

}

配置文件的写入和Spring XML的基本类似。application.yml相当于applicationContext.xml,security.properties就是要进行属性替换的配置文件。

application.yml:

spring:

  datasource:

    url: jdbc:mysql://localhost:3306/abc?useSSL=false

    username: root

    password: ${jdbc.password}

security.properties:

jdbc.password=ENC(jWgGELCkuxRuCI2Aqa6cF9VCxYpuKEZr)

创建数据源的时候在使用属性参数时，会对ENC()中的内容进行解密，达到认证成功，创建数据源完成。

http://www.tuicool.com/articles/YZJNzy3