1、引入jasypt依赖

		<dependency>
		    <groupId>com.github.ulisesbocchio</groupId>
		    <artifactId>jasypt-spring-boot-starter</artifactId>
		    <version>3.0.3</version>
		</dependency>

2、在application.properties中添加密钥配置：jasypt.encryptor.password=密钥值

jasypt.encryptor.password=testEncryptPassword

3、对明文进行加密

3.1、添加类注解StringEncryptor

3.2、注入StringEncryptor

3.3、调用StringEncryptor.encrypt进行加密

3.4、代码示例：

TestService.java：

package com.zjr.donny.helloworld.service;

public interface TestService {
	String jasyptEncrypt(String text);
}

TestServiceImpl.java：

package com.zjr.donny.helloworld.service.impl;

import org.jasypt.encryption.StringEncryptor;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import com.ulisesbocchio.jasyptspringboot.annotation.EnableEncryptableProperties;
import com.zjr.donny.helloworld.service.TestService;

@Service
@EnableEncryptableProperties
public class TestServiceImpl implements TestService {
	@Autowired
	private StringEncryptor stringEncryptor;

	@Override
	public String jasyptEncrypt(String text) {
		String encryptedValue = stringEncryptor.encrypt(text);
		System.out.println(text + " 加密值：" + encryptedValue);
		return encryptedValue;
	}

}

在Controller中使用TestService：

package com.zjr.donny.helloworld.controller;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import com.zjr.donny.helloworld.service.TestService;


@RestController
public class TestController {
	@Autowired
	private TestService testService;

	@RequestMapping("/encrypt/{text}")
	public String encrypt(@PathVariable String text) {
		return testService.jasyptEncrypt(text);
	}

}

启动springboot后，在地址栏车输入需要加密密码

如：http://localhost:8080/encrypt/8080

（加密spring.datasource.driver-class-name的值com.mysql.cj.jdbc.Driver ），结果为：fN6wrENNHnIPNunoN6694iCjYmP0hcobB66zesRFJrlxryONtEtGDUMzEw5fS/SmUKeB29HNwzIQ78jKoebj9Q==

4、把加密后的值替换到配置文件application.properties，用“ENC(”作为前缀，“)”作为后缀包起来

spring.datasource.driver-class-name=ENC(fN6wrENNHnIPNunoN6694iCjYmP0hcobB66zesRFJrlxryONtEtGDUMzEw5fS/SmUKeB29HNwzIQ78jKoebj9Q==)

如果需要修改前后缀的值，在application.properties添加配置：

例：

jasypt.encryptor.property.prefix=HELLO[
jasypt.encryptor.property.suffix=]

5、使用自定义的加密方法

5.1、对步骤3中的TestServiceImpl.java添加Bean，实现StringEncryptor接口，重写里面的encrypt与decrypt方法

TestServiceImpl.java：

package com.zjr.donny.helloworld.service.impl;

import org.jasypt.encryption.StringEncryptor;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.core.env.Environment;
import org.springframework.stereotype.Service;

import com.ulisesbocchio.jasyptspringboot.annotation.EnableEncryptableProperties;
import com.zjr.donny.helloworld.service.TestService;

@Service
@EnableEncryptableProperties
public class TestServiceImpl implements TestService {
	@Bean("myStringEncryptor")
	public StringEncryptor getStringEncryptor(Environment environment) {
		String defaultPassword = "xxxx";
		String jasyptPassword = environment.getRequiredProperty("jasypt.encryptor.password") == null ? defaultPassword
				: environment.getRequiredProperty("jasypt.encryptor.password");
		return new StringEncryptor() {
			@Override
			public String encrypt(String s) {
				return jasyptPassword + s;
			}

			@Override
			public String decrypt(String s) {
				System.err.println("jasypt password is " + jasyptPassword);
				return s.substring(jasyptPassword.length());
			}
		};
	}

	@Autowired
	private StringEncryptor stringEncryptor;

	@Override
	public String jasyptEncrypt(String text) {
		String encryptedValue = stringEncryptor.encrypt(text);
		System.out.println(text + " 加密值：" + encryptedValue);
		return encryptedValue;
	}

}

5.2、application.properties里添加配置，指定上一步5.1的类为加密类

spring.datasource.driver-class-name=ENC(testEncryptPasswordcom.mysql.cj.jdbc.Driver)

jasypt.encryptor.password=testEncryptPassword
jasypt.encryptor.bean=myStringEncryptor