如何加密数据库密码？

news2025/10/31 21:02:35

首先对数据库进行设置

需要配置文件

(1)pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>cn.mingzi</groupId>
        <artifactId>jdbcdemo</artifactId>
        <version>1.0</version>
    </parent>

    <artifactId>db-Demo</artifactId>

    <properties>
        <maven.compiler.source>17</maven.compiler.source>
        <maven.compiler.target>17</maven.compiler.target>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>

    <dependencies>
        <!-- mysql-connector-java -->
        <dependency>
            <groupId>com.mysql</groupId>
            <artifactId>mysql-connector-j</artifactId>
            <version>8.1.0</version>
        </dependency>
        <!-- com.alibaba/druid -->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.2.6</version>
        </dependency>
        <!-- junit -->
        <dependency>
            <groupId>org.junit.jupiter</groupId>
            <artifactId>junit-jupiter-engine</artifactId>
            <version>5.10.0</version>
            <scope>test</scope>
        </dependency>
        <!-- lombok -->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.20</version>
            <scope>provided</scope>
        </dependency>
    </dependencies>

</project>

Demo.java直接使用（还没加密）

public class DbDemo {
    public static void main(String[] args){
        try(DruidDataSource ds = new DruidDataSource()) {
            ds.setDriverClassName("com.mysql.cj.jdbc.Driver");
            ds.setUrl("jdbc:mysql:/dbok");
            ds.setUsername("admin");
            ds.setFilters("stat,config");
            ds.setConnectionProperties("config.decrypt=true;config.decrypt.key=");
            ds.setPassword("");

            var c =ds.getConnection();
            System.out.println(c.getMetaData().getDatabaseMajorVersion());

        }catch (Exception e){
            e.printStackTrace();
        }
    }

找到对应jar包的路径，输入cmd进入控制命令台

进入命令控制台输入命令：

java -cp druid-1.2.18.jar com.alibaba.druid.filter.config.ConfigTools admin

#开启解密需要公要字符串如下：publicKey字符串

publicKey:MFwwDQYJKoZIhvcNAQEBBQADSwAwSAJBAMOz+sKtDhQBaDParZAylpFsPmHWDnFg3lLEqsXDNA9KEJL7rHTJG25duRw6XfRfYbfb1vQtB/O/UdRO7tcHq68CAwEAAQ==

publicKey,password加入代码中：

public class DbDemo {
    public static void main(String[] args){
        try(DruidDataSource ds = new DruidDataSource()) {
            ds.setDriverClassName("com.mysql.cj.jdbc.Driver");
            ds.setUrl("jdbc:mysql:/dbok");
            ds.setUsername("admin");
            ds.setFilters("stat,config");
            ds.setConnectionProperties("config.decrypt=true;config.decrypt.key=MFwwDQYJKoZIhvcNAQEBBQADSwAwSAJBAMOz+sKtDhQBaDParZAylpFsPmHWDnFg3lLEqsXDNA9KEJL7rHTJG25duRw6XfRfYbfb1vQtB/O/UdRO7tcHq68CAwEAAQ==");
            ds.setPassword("rN18MbLELYlEsx7pxVcKpmFpcgXKJtpZUitOpOEAXJkXxs/M1gOHY0VniYljo2IaYY/M3hcOR8qnxFBXQAE74w==");

            var c =ds.getConnection();
            System.out.println(c.getMetaData().getDatabaseMajorVersion());

        }catch (Exception e){
            e.printStackTrace();
        }
    }

执行结果：显示的是数据库8.1.0的版本号

如何解密：创建一个Ok.java类，编写代码

public class Ok {
    public static void main(String[] args) throws Exception {
       String pk = "MFwwDQYJKoZIhvcNAQEBBQADSwAwSAJBAMOz+sKtDhQBaDParZAylpFsPmHWDnFg3lLEqsXDNA9KEJL7rHTJG25duRw6XfRfYbfb1vQtB/O/UdRO7tcHq68CAwEAAQ==";
       String pw = "rN18MbLELYlEsx7pxVcKpmFpcgXKJtpZUitOpOEAXJkXxs/M1gOHY0VniYljo2IaYY/M3hcOR8qnxFBXQAE74w==";
       String ps = ConfigTools.decrypt(pk,pw);
       System.out.println(ps);
    }
}