【Quartz】解密properties配置文件中的賬號密碼

　　在配置quartz時，為了保密某些信息（特別是賬號密碼），通常會使用密文。那么在實際使用這些配置信息時，需要進行解密。本文提供一種解密方法如下：

（1）假設在properties文件中加密了賬號密碼

#============================================================================
# 基礎配置
#============================================================================
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

#============================================================================
# 調度器線程池配置
#============================================================================
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 作業存儲配置
#============================================================================
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

　　注意：properties文件名不能是quartz.properties，否則Quartz可能還是會使用解密前的配置信息。

（2）寫SchedulerConfig.java文件解密賬號密碼后使用

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 //類似xml中的<beans>標簽,一般和@bean注解一起使用來配置一個Bean,讓Spring來管理它的生命周期
public class SchedulerConfig {

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

    /**
     * 加載Quartz配置
     *
     */
    @Bean
    public Properties quartzProperties() throws IOException {
        //使用Spring的PropertiesFactoryBean對屬性配置文件進行管理
        PropertiesFactoryBean propertiesFactoryBean = new PropertiesFactoryBean();
        propertiesFactoryBean.setLocation(new ClassPathResource("/quartz_config.properties"));
        propertiesFactoryBean.afterPropertiesSet();

        Properties properties = propertiesFactoryBean.getObject();

        // 賬號密碼解密
        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監聽器,讓Spring boot啟動時初始化Quartz
     *
     */
    @Bean
    public QuartzInitializerListener executorListener() {
        return new QuartzInitializerListener();
    }

    /**
     * 通過SchedulerFactoryBean獲取Scheduler的實例
     */
    @Bean(name="Scheduler")
    public Scheduler scheduler() throws IOException {
        return schedulerFactoryBean().getScheduler();
    }
}