SpringBoot实现动态控制定时任务支持多参数功能

2021-04-03 我要评论

由于工作上的原因，需要进行定时任务的动态增删改查，网上大部分资料都是整合quertz框架实现的。本人查阅了一些资料，发现springBoot本身就支持实现定时任务的动态控制。并进行改进，现支持任意多参数定时任务配置

实现结果如下图所示：

后台测试显示如下：

github 简单demo地址如下：

springboot-dynamic-task

1.定时任务的配置类：SchedulingConfig

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.scheduling.TaskScheduler;
import org.springframework.scheduling.concurrent.ThreadPoolTaskScheduler;
/**
 * @program: simple-demo
 * @description: 定时任务配置类
 * @author: CaoTing
 * @date: 2019/5/23
 **/
@Configuration
public class SchedulingConfig {
  @Bean
  public TaskScheduler taskScheduler() {
    ThreadPoolTaskScheduler taskScheduler = new ThreadPoolTaskScheduler();
    // 定时任务执行线程池核心线程数
    taskScheduler.setPoolSize(4);
    taskScheduler.setRemoveOnCancelPolicy(true);
    taskScheduler.setThreadNamePrefix("TaskSchedulerThreadPool-");
    return taskScheduler;
  }
}

2.定时任务注册类：CronTaskRegistrar

这个类包含了新增定时任务，移除定时任务等等核心功能方法

import com.caotinging.demo.task.ScheduledTask;
import org.springframework.beans.factory.DisposableBean;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.scheduling.TaskScheduler;
import org.springframework.scheduling.config.CronTask;
import org.springframework.stereotype.Component;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
/**
 * @program: simple-demo
 * @description: 添加定时任务注册类，用来增加、删除定时任务。
 * @author: CaoTing
 * @date: 2019/5/23
 **/
@Component
public class CronTaskRegistrar implements DisposableBean {
  private final Map<Runnable, ScheduledTask> scheduledTasks = new ConcurrentHashMap<>(16);
  @Autowired
  private TaskScheduler taskScheduler;
  public TaskScheduler getScheduler() {
    return this.taskScheduler;
  }
  /**
   * 新增定时任务
   * @param task
   * @param cronExpression
   */
  public void addCronTask(Runnable task, String cronExpression) {
    addCronTask(new CronTask(task, cronExpression));
  }
  public void addCronTask(CronTask cronTask) {
    if (cronTask != null) {
      Runnable task = cronTask.getRunnable();
      if (this.scheduledTasks.containsKey(task)) {
        removeCronTask(task);
      }
      this.scheduledTasks.put(task, scheduleCronTask(cronTask));
    }
  }
  /**
   * 移除定时任务
   * @param task
   */
  public void removeCronTask(Runnable task) {
    ScheduledTask scheduledTask = this.scheduledTasks.remove(task);
    if (scheduledTask != null)
      scheduledTask.cancel();
  }
  public ScheduledTask scheduleCronTask(CronTask cronTask) {
    ScheduledTask scheduledTask = new ScheduledTask();
    scheduledTask.future = this.taskScheduler.schedule(cronTask.getRunnable(), cronTask.getTrigger());
    return scheduledTask;
  }
  @Override
  public void destroy() {
    for (ScheduledTask task : this.scheduledTasks.values()) {
      task.cancel();
    }
    this.scheduledTasks.clear();
  }
}

3.定时任务执行类：SchedulingRunnable

import com.caotinging.demo.utils.SpringContextUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.util.ReflectionUtils;
import java.lang.reflect.Method;
import java.util.Objects;
/**
 * @program: simple-demo
 * @description: 定时任务运行类
 * @author: CaoTing
 * @date: 2019/5/23
 **/
public class SchedulingRunnable implements Runnable {
  private static final Logger logger = LoggerFactory.getLogger(SchedulingRunnable.class);
  private String beanName;
  private String methodName;
  private Object[] params;
  public SchedulingRunnable(String beanName, String methodName) {
    this(beanName, methodName, null);
  }
  public SchedulingRunnable(String beanName, String methodName, Object...params ) {
    this.beanName = beanName;
    this.methodName = methodName;
    this.params = params;
  }
  @Override
  public void run() {
    logger.info("定时任务开始执行 - bean：{}，方法：{}，参数：{}", beanName, methodName, params);
    long startTime = System.currentTimeMillis();
    try {
      Object target = SpringContextUtils.getBean(beanName);
      Method method = null;
      if (null != params && params.length > 0) {
        Class<?>[] paramCls = new Class[params.length];
        for (int i = 0; i < params.length; i++) {
          paramCls[i] = params[i].getClass();
        }
        method = target.getClass().getDeclaredMethod(methodName, paramCls);
      } else {
        method = target.getClass().getDeclaredMethod(methodName);
      }
      ReflectionUtils.makeAccessible(method);
      if (null != params && params.length > 0) {
        method.invoke(target, params);
      } else {
        method.invoke(target);
      }
    } catch (Exception ex) {
      logger.error(String.format("定时任务执行异常 - bean：%s，方法：%s，参数：%s ", beanName, methodName, params), ex);
    }
    long times = System.currentTimeMillis() - startTime;
    logger.info("定时任务执行结束 - bean：{}，方法：{}，参数：{}，耗时：{} 毫秒", beanName, methodName, params, times);
  }
  @Override
  public boolean equals(Object o) {
    if (this == o) return true;
    if (o == null || getClass() != o.getClass()) return false;
    SchedulingRunnable that = (SchedulingRunnable) o;
    if (params == null) {
      return beanName.equals(that.beanName) &&
          methodName.equals(that.methodName) &&
          that.params == null;
    }
    return beanName.equals(that.beanName) &&
        methodName.equals(that.methodName) &&
        params.equals(that.params);
  }
  @Override
  public int hashCode() {
    if (params == null) {
      return Objects.hash(beanName, methodName);
    }
    return Objects.hash(beanName, methodName, params);
  }
}

4.定时任务控制类：ScheduledTask

import java.util.concurrent.ScheduledFuture;
/**
 * @program: simple-demo
 * @description: 定时任务控制类
 * @author: CaoTing
 * @date: 2019/5/23
 **/
public final class ScheduledTask {
  public volatile ScheduledFuture<?> future;
  /**
   * 取消定时任务
   */
  public void cancel() {
    ScheduledFuture<?> future = this.future;
    if (future != null) {
      future.cancel(true);
    }
  }
}

5.定时任务的测试

编写一个需要用于测试的任务类

import org.springframework.stereotype.Component;
/**
 * @program: simple-demo
 * @description:
 * @author: CaoTing
 * @date: 2019/5/23
 **/
@Component("demoTask")
public class DemoTask {
  public void taskWithParams(String param1, Integer param2) {
    System.out.println("这是有参示例任务：" + param1 + param2);
  }
  public void taskNoParams() {
    System.out.println("这是无参示例任务");
  }
}

进行单元测试

import com.caotinging.demo.application.DynamicTaskApplication;
import com.caotinging.demo.application.SchedulingRunnable;
import com.caotinging.demo.config.CronTaskRegistrar;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
/**
 * @program: simple-demo
 * @description: 测试定时任务
 * @author: CaoTing
 * @date: 2019/5/23
 **/
@RunWith(SpringJUnit4ClassRunner.class)
@SpringBootTest(classes = DynamicTaskApplication.class)
public class TaskTest {
  @Autowired
  CronTaskRegistrar cronTaskRegistrar;
  @Test
  public void testTask() throws InterruptedException {
    SchedulingRunnable task = new SchedulingRunnable("demoTask", "taskNoParams", null);
    cronTaskRegistrar.addCronTask(task, "0/10 * * * * ?");
    // 便于观察
    Thread.sleep(3000000);
  }
  @Test
  public void testHaveParamsTask() throws InterruptedException {
    SchedulingRunnable task = new SchedulingRunnable("demoTask", "taskWithParams", "haha", 23);
    cronTaskRegistrar.addCronTask(task, "0/10 * * * * ?");
    // 便于观察
    Thread.sleep(3000000);
  }
}

6.工具类：SpringContextUtils

import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;
/**
 * @program: simple-demo
 * @description: spring获取bean工具类
 * @author: CaoTing
 * @date: 2019/5/23
 **/
@Component
public class SpringContextUtils implements ApplicationContextAware {
  private static ApplicationContext applicationContext = null;
  @Override
  public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
    if (SpringContextUtils.applicationContext == null) {
      SpringContextUtils.applicationContext = applicationContext;
    }
  }
  //获取applicationContext
  public static ApplicationContext getApplicationContext() {
    return applicationContext;
  }
  //通过name获取 Bean.
  public static Object getBean(String name) {
    return getApplicationContext().getBean(name);
  }
  //通过class获取Bean.
  public static <T> T getBean(Class<T> clazz) {
    return getApplicationContext().getBean(clazz);
  }
  //通过name,以及Clazz返回指定的Bean
  public static <T> T getBean(String name, Class<T> clazz) {
    return getApplicationContext().getBean(name, clazz);
  }
}

7.我的pom依赖

<dependencies>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-jdbc</artifactId>
    </dependency>
    <dependency>
      <groupId>com.baomidou</groupId>
      <artifactId>mybatisplus-spring-boot-starter</artifactId>
      <version>1.0.5</version>
    </dependency>
    <dependency>
      <groupId>com.baomidou</groupId>
      <artifactId>mybatis-plus</artifactId>
      <version>2.1.9</version>
    </dependency>
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <scope>runtime</scope>
    </dependency>
    <dependency>
      <groupId>com.alibaba</groupId>
      <artifactId>druid-spring-boot-starter</artifactId>
      <version>1.1.9</version>
    </dependency>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-aop</artifactId>
    </dependency>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
    <!-- 数据库-->
    <!--<dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <scope>runtime</scope>
    </dependency>-->
    <!-- https://mvnrepository.com/artifact/com.hynnet/oracle-driver-ojdbc -->
    <!--<dependency>
      <groupId>com.oracle</groupId>
      <artifactId>ojdbc6</artifactId>
      <version>11.2.0.1.0</version>
    </dependency>-->
    <!-- 单元测试 -->
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-test</artifactId>
      <scope>provided</scope>
    </dependency>
    <!--redisTemplate -->
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-data-redis</artifactId>
    </dependency>
    <dependency>
      <groupId>redis.clients</groupId>
      <artifactId>jedis</artifactId>
      <version>2.7.3</version>
    </dependency>
    <!-- http连接 restTemplate -->
    <dependency>
      <groupId>org.apache.httpcomponents</groupId>
      <artifactId>httpclient</artifactId>
    </dependency>
    <dependency>
      <groupId>org.apache.httpcomponents</groupId>
      <artifactId>httpclient-cache</artifactId>
    </dependency>
    <!-- 工具-->
    <dependency>
      <groupId>org.projectlombok</groupId>
      <artifactId>lombok</artifactId>
      <optional>true</optional>
    </dependency>
    <dependency>
      <groupId>com.alibaba</groupId>
      <artifactId>fastjson</artifactId>
      <version>1.2.31</version>
    </dependency>
    <dependency>
      <groupId>org.apache.commons</groupId>
      <artifactId>commons-lang3</artifactId>
    </dependency>
    <dependency>
      <groupId>commons-lang</groupId>
      <artifactId>commons-lang</artifactId>
      <version>2.6</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/com.google/guava -->
    <dependency>
      <groupId>com.google.guava</groupId>
      <artifactId>guava</artifactId>
      <version>10.0.1</version>
    </dependency>
    <!-- pinyin4j -->
    <dependency>
      <groupId>com.belerweb</groupId>
      <artifactId>pinyin4j</artifactId>
      <version>2.5.0</version>
    </dependency>
  </dependencies>

8.总结

建议移步github获取简单demo上手实践哦，在本文文首哦。有帮助的话点个赞吧，笔芯。

以上所述是小编给大家介绍的SpringBoot实现动态控制定时任务支持多参数功能，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对网站的支持！

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