【Quartz】解密properties配置文件中的账号密码

　　在配置quartz时，为了保密某些信息（特别是账号密码），通常会使用密文。那么在实际使用这些配置信息时，需要进行解密。本文提供一种解密方法如下：

（1）假设在properties文件中加密了账号密码

 #============================================================================
 # 基础配置
 #============================================================================
 org.quartz.scheduler.instanceName = JobScheduler
 org.quartz.scheduler.instanceId = AUTO
 org.quartz.scheduler.rmi.export = false
 org.quartz.scheduler.rmi.proxy = false
 org.quartz.scheduler.wrapJobExecutionInUserTransaction = false

 #============================================================================
 # 调度器线程池配置
 #============================================================================
 org.quartz.threadPool.class = org.quartz.simpl.SimpleThreadPool
 org.quartz.threadPool.threadCount = 20
 org.quartz.threadPool.threadPriority = 5
 org.quartz.jobStore.misfireThreshold = 60000

 #============================================================================
 # Configure JobStore 作业存储配置
 #============================================================================
 org.quartz.jobStore.class = org.quartz.impl.jdbcjobstore.JobStoreTX
 org.quartz.jobStore.driverDelegateClass = org.quartz.impl.jdbcjobstore.StdJDBCDelegate
 org.quartz.jobStore.useProperties = true
 org.quartz.jobStore.tablePrefix = QRTZ_
 org.quartz.jobStore.dataSource = qzDS

 org.quartz.jobStore.isClustered = true
 org.quartz.jobStore.clusterCheckinInterval = 15000

 #============================================================================
 # JDBC
 #============================================================================
 org.quartz.dataSource.qzDS.driver = com.mysql.jdbc.Driver
 org.quartz.dataSource.qzDS.URL = jdbc:mysql://localhost:3306/job_scheduler
 org.quartz.dataSource.qzDS.user = *****************************
 org.quartz.dataSource.qzDS.password = *****************************
 org.quartz.dataSource.qzDS.maxConnections = 5
 org.quartz.dataSource.qzDS.validationQuery = select 0 from dual

quartz_config.properties

　　注意：properties文件名不能是quartz.properties，否则Quartz可能还是会使用解密前的配置信息。

（2）写SchedulerConfig.java文件解密账号密码后使用

import org.quartz.Scheduler;
import org.quartz.ee.servlet.QuartzInitializerListener;
import org.springframework.beans.factory.config.PropertiesFactoryBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.io.ClassPathResource;
import org.springframework.scheduling.quartz.SchedulerFactoryBean;
import org.wcc.crypt.Crypter;
import org.wcc.crypt.CrypterFactory;

import java.io.IOException;
import java.util.Properties;

@Configuration //类似xml中的<beans>标签,一般和@bean注解一起使用来配置一个Bean,让Spring来管理它的生命周期
public class SchedulerConfig {

    @Bean(name="SchedulerFactory")
    public SchedulerFactoryBean schedulerFactoryBean() throws IOException {
        SchedulerFactoryBean factory = new SchedulerFactoryBean();
        factory.setQuartzProperties(quartzProperties());
        return factory;
    }

    /**
     * 加载Quartz配置
     *
     */
    @Bean
    public Properties quartzProperties() throws IOException {
        //使用Spring的PropertiesFactoryBean对属性配置文件进行管理
        PropertiesFactoryBean propertiesFactoryBean = new PropertiesFactoryBean();
        propertiesFactoryBean.setLocation(new ClassPathResource("/quartz_config.properties"));
        propertiesFactoryBean.afterPropertiesSet();

        Properties properties = propertiesFactoryBean.getObject();

        // 账号密码解密
        Crypter crypter = CrypterFactory.getCrypter(CrypterFactory.AES_CBC);
        String user = properties.getProperty("org.quartz.dataSource.qzDS.user");
        if (user != null) {
            user = crypter.decrypt(user);
            properties.setProperty("org.quartz.dataSource.qzDS.user", user);
        }
        String password = properties.getProperty("org.quartz.dataSource.qzDS.password");
        if (password != null) {
            password = crypter.decrypt(password);
            properties.setProperty("org.quartz.dataSource.qzDS.password", password);
        }

        return properties;
    }

    /**
     * 初始化Quartz监听器,让Spring boot启动时初始化Quartz
     *
     */
    @Bean
    public QuartzInitializerListener executorListener() {
        return new QuartzInitializerListener();
    }

    /**
     * 通过SchedulerFactoryBean获取Scheduler的实例
     */
    @Bean(name="Scheduler")
    public Scheduler scheduler() throws IOException {
        return schedulerFactoryBean().getScheduler();
    }
}