<!-- jasypt核心依賴 -->
<dependency>
  <groupId>com.github.ulisesbocchio</groupId>
  <artifactId>jasypt-spring-boot-starter</artifactId>
  <version>2.1.1</version> <!-- jasypt2.1.1與spring-boot2.2.6的兼容性是最好的，避免踩坑，淚呀 -->
</dependency>

<!-- jasypt-maven插件，不影響基本功能 -->
<plugin>
 <groupId>com.github.ulisesbocchio</groupId>
 <artifactId>jasypt-maven-plugin</artifactId>
 <version>3.0.3</version>
</plugin>

package com.yang.ftpdemo.controller;

import lombok.Data;
import org.jasypt.encryption.StringEncryptor;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import javax.annotation.Resource;

@RestController
@RequestMapping("/crypt")
public class CryptController {

  @Resource
  private StringEncryptor encrypt;

  @Resource
  private CryptConfig cryptConfig;

  @GetMapping("/encrypt")
  public CryptConfig encrypt() {
    String username = encrypt.encrypt("root");
    String password = encrypt.encrypt("root123");

    CryptConfig crypt = new CryptConfig();
    crypt.setPassword(password);
    crypt.setUserName(username);
    return crypt;
  }

  @GetMapping("/decrypt")
  public CryptConfig decrypt() {
    CryptConfig crypt = new CryptConfig();
    BeanUtils.copyProperties(this.cryptConfig, crypt);
    return crypt;
  }
}

@Data
@Configuration
@ConfigurationProperties(prefix = "crypt")
class CryptConfig {
  private String userName;
  private String password;
}

{
 "userName":"XsWOwhZIag8XBh3DFl4sqA==",
 "password":"3kD2/u+xnM1i5mO2cVMWKw=="
}

{
 "userName":"root",
 "password":"root123"
}