非Spring环境下，Mybatis+Druid对数据库密码加密

导入jar包（mybatis+druid+mysql）

使用druid生成加密后的密码

在jar包所在路径下，打开cmd窗口，执行：java -cp druid-1.1.10.jar com.alibaba.druid.filter.config.ConfigTools yourpassword

执行后生成

privateKey:MIIBVAIBADANBgkqhkiG9w0BAQEFAASCAT4wggE6AgEAAkEA4dZRH41lYjJDwSiWJu9xfZ1P26b3Anj34zUlMgednN317hDOEkKosIfH9TKCjdO2DJVUKkYMAl1E8nFOwtOGDwIDAQABAkAu6AC5ePjRyHbiK7fkJl+AI6huiuNLFC0IeAVdus81wVBsBzXyeL6xA0Zi7fyC4ozBoSdw+TKQycYcAKNi/j2BAiEA8txEkPTXapI7WwMZkVRXr8bkB6RQOOUNVrRGAlfwVP8CIQDuDkTd65FJOBCOOuku5Ri7CocTdey7F
FqO+JtmOkJ+8QIhAKeXGvXRD+pp+O3ISNeCFXSmUmt3lyh73+WKR5mMZ7uvAiByn6RBRuAZ5UjzcyI8VktmJFeN40YtfktsdAA/ZOYHwQIgHRA+jMmU8qcxoqIA/QlZtOE17T1JUWIzv2UTodJ54L4=
publicKey:MFwwDQYJKoZIhvcNAQEBBQADSwAwSAJBAOHWUR+NZWIyQ8EolibvcX2dT9um9wJ49+M1JTIHnZzd9e4QzhJCqLCHx/Uygo3TtgyVVCpGDAJdRPJxTsLThg8CAwEAAQ==
password:pQ3SPAMLel98ESuBsC3WLw9OdaX0Nu1MG0feSV4KhSJm4D5NyD7I1N/hfzXh93F/dhOyytrvSVzaSNqF/qh1LQ==

我们使用的是生成的password和publicKey，分别插入下面的mybatis-config.xml对应配置文件的No.1和No.2处

自定义数据源

import com.alibaba.druid.pool.DruidDataSource;
import org.apache.ibatis.datasource.DataSourceFactory;

import javax.sql.DataSource;
import java.sql.SQLException;
import java.util.Properties;

public class DruidDataSourceFactory implements DataSourceFactory {
    private Properties properties;

    @Override
    public void setProperties(Properties properties) {
        this.properties = properties;
    }

    @Override
    public DataSource getDataSource() {
        DruidDataSource druidDataSource = new DruidDataSource();
        druidDataSource.setDriverClassName(properties.getProperty("driver"));
        druidDataSource.setUrl(properties.getProperty("url"));
        druidDataSource.setUsername(properties.getProperty("username"));
        druidDataSource.setPassword(properties.getProperty("password"));

        try {
            druidDataSource.setFilters(properties.getProperty("filters"));
        } catch (SQLException e) {
            e.printStackTrace();
        }

        druidDataSource.setConnectionProperties(properties.getProperty("connectionProperties"));

        try {
            druidDataSource.init();
        } catch (SQLException e) {
            e.printStackTrace();
        }
        return druidDataSource;
    }
}

配置mybatis-config.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
    <typeAliases>
        <typeAlias type="com.yuzhe.config.DruidDataSourceFactory" alias="DRUID"/>
        <typeAlias alias="User" type="com.yuzhe.entity.User" />
    </typeAliases>
    <environments default="development">
        <environment id="development">
            <transactionManager type="JDBC" />
            <!-- 配置数据库连接信息 -->
            <dataSource type="DRUID">
                <property name="driver" value="com.mysql.jdbc.Driver"/>
                <property name="url" value="jdbc:mysql://localhost:3306/test001"/>
                <property name="username" value="root"/>
                <property name="password" value="password"/> <!-- No.1-->

                <property name="filters" value="config"/> <!-- 此处传的是个以,分割的字符串。比如可以设置为config,stat,wall,log4j；stat是开启druid的监控。后续会说明在非web项目中如何使用druid自带的监控功能-->
                <property name="connectionProperties" value="config.decrypt=true;config.decrypt.key=publicKey"/><!-- No.2-->
            </dataSource>
        </environment>
    </environments>
    <mappers>
        <mapper resource="com/yuzhe/mapper/XXX.xml"/>
    </mappers>
</configuration>