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