~ java -cp D:\environment\apache-maven-3.6.3\repository\com\alibaba\druid\1.2.4\druid-1.2.4.jar com.alibaba.druid.filter.config.ConfigTools 123456

privateKey:MIIBVgIBADANBgkqhkiG9w0BAQEFAASCAUAwggE8AgEAAkEAiNTHXZbTodDI86PXYVH8vh4JnYoYbNTUBWjRFZrzKgnuQtma/2XNNL16a4K0dtJrRmur/HUDZGtJsBJYJaIo3wIDAQABAkAMwbmskgk9BtgVTusfmaM0nlxLIbrROq5hqroDh6SwAIYdO2sHyp/lSrHzRPhVqinrcyLSO3zmH1wiA
gZoYfKxAiEAvdqlMAr3JqJ5zlVylnJ6JE1ihQRuLQ13z1MKGeiCVlUCIQC4gPHJwyyMQzgOYbFxc8YnD/OwVrRVZG57OlVnHVmuYwIhAIXnQ2DKKx0NtVlo/OPNpAYcqmLlCAwwlpMcn2A8lEjtAiEArsefxNT6J2kp+h27nVDiPnDTFZIdRONd8ahB7OuV4CcCIQCjm3CKZhuxeCUJOq8+HQQ8XxWf/0UeMSIBD
b9rAA0h8Q==
publicKey:MFwwDQYJKoZIhvcNAQEBBQADSwAwSAJBAIjUx12W06HQyPOj12FR/L4eCZ2KGGzU1AVo0RWa8yoJ7kLZmv9lzTS9emuCtHbSa0Zrq/x1A2RrSbASWCWiKN8CAwEAAQ==
password:B0HU/gB6puPrjMg4EHs9Fw8GdW7rr4i9XCsbmTuQYtxw3SslSkCc1EjTt5fP/EYuuwltf3ls4oFbCbh8gO9+Bg==

spring:
  datasource:
    type: com.alibaba.druid.pool.DruidDataSource
    driver-class-name: com.mysql.cj.jdbc.Driver
    druid:
      username: test
      password: pU6kFhGmzI1DVeFtvIVBberT86KsIUE/iPQeN7wsqHyYNAnvQ/2GZBbOCvdm7SJpaC3klmqtCdvfDtk1FLocQA==
      url: jdbc:mysql://localhost:3306/test?characterEncoding=utf8&zeroDateTimeBehavior=convertToNull&useSSL=false&allowMultiQueries=true&useJDBCCompliantTimezoneShift=true&useLegacyDatetimeCode=false&serverTimezone=Asia/Shanghai
      filter:
        config:
          enabled: true
      connection-properties: config.decrypt=true;config.decrypt.key=MFwwDQYJKoZIhvcNAQEBBQADSwAwSAJBAMUKJrfaFd7QgLYKdU6/auBBAHn7DgRZKRdMo6yRqcaAWLjudPH4OP58A3EgMc/GFlvHjVK3pF/Qz/FTVKBtPksCAwEAAQ==
      filters: stat,wall

package com.education.config;
import com.alibaba.druid.util.DruidPasswordCallback;
import lombok.extern.slf4j.Slf4j;
import java.util.Properties;
/**
 * @author code
 * @version 1.0
 * @date 2021/4/15 13:41
 */
@Slf4j
public class MyDruidPwd extends DruidPasswordCallback {
    public static final String key = "-education";
    @Override
    public void setProperties(Properties properties) {
        super.setProperties(properties);
        char[] chars = null;
        try {
            String ciphertext = properties.getProperty("pwd");
            //安装之前密码加密的方式进行解密
            String pwd = encryptPwd(ciphertext);
            chars = pwd.toCharArray();
        } catch (Exception e) {
            e.printStackTrace();
            log.info("解密失败,{}", e.getMessage());
        }
        super.setPassword(chars);
    }
    /**
     * 自定义解密
     *
     * @param pwd
     * @return
     */
    private String encryptPwd(String pwd) {
        //自定义加密，可用md5加密
        //TODO
        return pwd.split(key)[0];
    }
    /**
     * 自定义加密
     * @param ciphertext
     * @return
     */
    private static String decryptPwd(String ciphertext) {
        //自定义解密，按照加密方式进行解密
        //TODO
        return ciphertext + key;
    }
    public static void main(String[] args) {
        System.out.println(decryptPwd("pU6kFhGmzI1DVeFtvIVBberT86KsIUE/iPQeN7wsqHyYNAnvQ/2GZBbOCvdm7SJpaC3klmqtCdvfDtk1FLocQA=="));
    }
}

spring:
  datasource:
    type: com.alibaba.druid.pool.DruidDataSource
    driver-class-name: com.mysql.cj.jdbc.Driver
    druid:
      username: test
      password:
      url: jdbc:mysql://localhost:3306/test?characterEncoding=utf8&zeroDateTimeBehavior=convertToNull&useSSL=false&allowMultiQueries=true&useJDBCCompliantTimezoneShift=true&useLegacyDatetimeCode=false&serverTimezone=Asia/Shanghai
      connection-properties: pwd=test123456
      filters: stat,wall
      password-callback-class-name: com.education.config.MyDruidPwd