SSM+Quartz 实现定时器（结合上篇文章，做定时删除过期图片）

上一篇文章实现了图片的上传功能，这里需要做一个删除过期图片的功能，过期时间暂定为 两个星期，即14天

 

pom.xml 中添加：

  <!-- https://mvnrepository.com/artifact/org.quartz-scheduler/quartz -->
        <dependency>
            <groupId>org.quartz-scheduler</groupId>
            <artifactId>quartz</artifactId>
            <version>2.3.0</version>
        </dependency>

spring配置文件：

    <!-- 定义目标bean和bean中的方法 -->
    <bean id="SpringQtzJob" class="yi.survey.DeleteQuartz" />  <!-- 项目中要执行的类 -->

    <bean id="SpringQtzJobMethod"
          class="org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean">
        <property name="targetObject">
            <ref bean="SpringQtzJob" /> <!-- 要执行的bean -->
        </property>
        <property name="targetMethod">  <!-- 要执行的方法名称 -->
            <value>delete</value>
        </property>
    </bean>
    <!-- ======================== 调度触发器 ======================== -->
    <bean id="CronTriggerBean" class="org.springframework.scheduling.quartz.CronTriggerFactoryBean">
        <property name="jobDetail" ref="SpringQtzJobMethod"></property>  <!-- 要执行的计划 -->
        <property name="cronExpression" value="0 0 0 * * ?"></property>  <!-- 触发时间 此为每天0点启动 -->
    </bean>

    <!-- ======================== 调度工厂 ======================== -->
    <bean id="SpringJobSchedulerFactoryBean"
          class="org.springframework.scheduling.quartz.SchedulerFactoryBean">
        <property name="triggers">
            <list>
                <ref bean="CronTriggerBean" />  <!-- 执行触发器 -->
            </list>
        </property>
    </bean>

 DeleteQuartz.java类

public class DeleteQuartz    {
    public  void delete(){
         System.out.println(new Date()+"触发定时器");
          String basePath= System.getProperty("SMBMMVC.root");
          String imgPath=basePath+"statics/img";
          File file=new File(imgPath);
          File[] files = file.listFiles();
          for (File file1 : files) {
              String fileName=file1.getName();
              if(!fileName.contains("timeOut")){
                  String baseName = FilenameUtils.getBaseName(fileName);
                  String[] s = baseName.split("_");
                  Date date=new Date(Long.parseLong(s[2]));  //获取图片上传日期
                  //当前日期
                  Calendar calendar=Calendar.getInstance();
                  Date nowTime = calendar.getTime();

                  //图片上传日期第14天的日期
                  calendar.setTime(date);
                  calendar.set(Calendar.DAY_OF_YEAR,calendar.get(Calendar.DAY_OF_YEAR)+14);
                  Date outTime = calendar.getTime();
                  if(nowTime.after(outTime)){ //当前日期在过期日期之后
                      System.out.println("删除过期照片:"+ fileName);
                      file1.delete();
                  }
              }
          }
    }
}