這篇文章主要講解了“java中基于線層池Spring-quartz如何實現動態增刪除改和暫?；謴投〞r任務”，文中的講解內容簡單清晰，易于學習與理解，下面請大家跟著小編的思路慢慢深入，一起來研究和學習“java中基于線層池Spring-quartz如何實現動態增刪除改和暫?；謴投〞r任務”吧！
注：本文中沒有定時任務增刪改查頁面、保存數據庫等操作的代碼。根據實際需求自行完善
pom.xml
<dependency> <groupId>org.springframework</groupId> <artifactId>spring-context-support</artifactId> <version>4.2.5.RELEASE</version> </dependency> <dependency> <groupId>org.quartz-scheduler</groupId> <artifactId>quartz</artifactId> <version>2.2.1</version> </dependency>
spring-scheduler.xml
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd"> <bean id="schedulerFactoryBean" class="org.springframework.scheduling.quartz.SchedulerFactoryBean"/> </beans>
ApplicationContext.xml (spring配置文件)
<!-- 增加quartz定時任務管理配置 --> <import resource="spring-scheduler.xml"/>
ScheduleJobMode.java
package com.scheduler;
import java.io.Serializable;
import java.util.Date;
/**
* 定時任務mode
*/
public class ScheduleJobMode implements Serializable {
private static final long serialVersionUID = 1L;
//任務調度參數key
public static final String JOB_PARAM_KEY = "JOB_PARAM_KEY";
//任務id
private String jobId;
//spring bean名稱 bean名稱不能為空
private String beanName;
//方法名 方法名稱不能為空
private String methodName;
//參數
private String params;
//cron表達式
private String cronExpression;
//任務狀態 1：正常，2：暫停
private String status;
//備注
private String remark;
//創建者
private String createName;
//創建時間
private Date createTime;
//最近更新人
private String modifierName;
//最近更新時間
private Date modifierTime;
public void setJobId(String jobId) {
this.jobId = jobId;
}
public String getJobId() {
return jobId;
}
public String getBeanName() {
return beanName;
}
public void setBeanName(String beanName) {
this.beanName = beanName;
}
public String getMethodName() {
return methodName;
}
public void setMethodName(String methodName) {
this.methodName = methodName;
}
public String getParams() {
return params;
}
public void setParams(String params) {
this.params = params;
}
public String getRemark() {
return remark;
}
public void setRemark(String remark) {
this.remark = remark;
}
public void setStatus(String status) {
this.status = status;
}
public String getStatus() {
return status;
}
public void setCronExpression(String cronExpression) {
this.cronExpression = cronExpression;
}
public String getCronExpression() {
return cronExpression;
}
public void setCreateTime(Date createTime) {
this.createTime = createTime;
}
public Date getCreateTime() {
return createTime;
}
public String getCreateName() {
return createName;
}
public void setCreateName(String createName) {
this.createName = createName;
}
public String getModifierName() {
return modifierName;
}
public void setModifierName(String modifierName) {
this.modifierName = modifierName;
}
public Date getModifierTime() {
return modifierTime;
}
public void setModifierTime(Date modifierTime) {
this.modifierTime = modifierTime;
}
}ScheduleJobLogMode.java
package com.scheduler;
import java.io.Serializable;
import java.util.Date;
/**
* 定時執行日志
*/
public class ScheduleJobLogMode implements Serializable {
private static final long serialVersionUID = 1L;
//日志id
private String logId;
//任務id
private String jobId;
//spring bean名稱
private String beanName;
//方法名
private String methodName;
//參數
private String params;
//任務狀態 0：成功 1：失敗
private String status;
//失敗信息
private String error;
//耗時(單位：毫秒)
private Integer times;
//創建時間
private Date createTime;
public String getLogId() {
return logId;
}
public void setLogId(String logId) {
this.logId = logId;
}
public String getJobId() {
return jobId;
}
public void setJobId(String jobId) {
this.jobId = jobId;
}
public String getBeanName() {
return beanName;
}
public void setBeanName(String beanName) {
this.beanName = beanName;
}
public String getMethodName() {
return methodName;
}
public void setMethodName(String methodName) {
this.methodName = methodName;
}
public String getParams() {
return params;
}
public void setParams(String params) {
this.params = params;
}
public String getStatus() {
return status;
}
public void setStatus(String status) {
this.status = status;
}
public String getError() {
return error;
}
public void setError(String error) {
this.error = error;
}
public Integer getTimes() {
return times;
}
public void setTimes(Integer times) {
this.times = times;
}
public Date getCreateTime() {
return createTime;
}
public void setCreateTime(Date createTime) {
this.createTime = createTime;
}
}ScheduleUtils.java
package com.scheduler;
import com.wawj.fg.common.scheduler.ScheduleJob;
import com.wawj.fg.common.scheduler.support.TaskSupport;
import com.scheduler.ScheduleJobMode;
import org.quartz.*;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* 定時任務工具類
*/
public class ScheduleUtils {
private static final Logger logger = LoggerFactory.getLogger(ScheduleUtils.class);
private static final String JOB_NAME = "TASK_";
/**
* 獲取觸發器key
*/
public static TriggerKey getTriggerKey(String jobId) {
return TriggerKey.triggerKey(JOB_NAME + jobId);
}
/**
* 獲取jobKey
*/
public static JobKey getJobKey(String jobId) {
return JobKey.jobKey(JOB_NAME + jobId);
}
/**
* 獲取表達式觸發器
*/
public static CronTrigger getCronTrigger(Scheduler scheduler, String jobId) {
try {
return (CronTrigger) scheduler.getTrigger(getTriggerKey(jobId));
} catch (SchedulerException e) {
logger.info("獲取定時任務CronTrigger出現異常", e);
return null;
}
}
/**
* 創建定時任務
*/
public static void createScheduleJob(Scheduler scheduler, ScheduleJobMode scheduleJob) {
try {
//構建job信息
JobDetail jobDetail = JobBuilder.newJob(ScheduleJob.class).withIdentity(getJobKey(scheduleJob.getJobId())).build();
//表達式調度構建器
CronScheduleBuilder scheduleBuilder = CronScheduleBuilder.cronSchedule(scheduleJob.getCronExpression())
.withMisfireHandlingInstructionDoNothing();
//按新的cronExpression表達式構建一個新的trigger
CronTrigger trigger = TriggerBuilder.newTrigger().withIdentity(getTriggerKey(scheduleJob.getJobId())).withSchedule(scheduleBuilder).build();
//放入參數，運行時的方法可以獲取
jobDetail.getJobDataMap().put(ScheduleJobMode.JOB_PARAM_KEY, scheduleJob);
scheduler.scheduleJob(jobDetail, trigger);
//暫停任務
if (scheduleJob.getStatus().equals(TaskSupport.TASK_STATUS_STOPPED)) {
pauseJob(scheduler, scheduleJob.getJobId());
}
} catch (SchedulerException e) {
logger.info("創建定時任務失敗", e);
}
}
/**
* 更新定時任務
*/
public static void updateScheduleJob(Scheduler scheduler, ScheduleJobMode scheduleJob) {
try {
TriggerKey triggerKey = getTriggerKey(scheduleJob.getJobId());
//表達式調度構建器
CronScheduleBuilder scheduleBuilder = CronScheduleBuilder.cronSchedule(scheduleJob.getCronExpression())
.withMisfireHandlingInstructionDoNothing();
CronTrigger trigger = getCronTrigger(scheduler, scheduleJob.getJobId());
if (null != trigger) {
//按新的cronExpression表達式重新構建trigger
trigger = trigger.getTriggerBuilder().withIdentity(triggerKey).withSchedule(scheduleBuilder).build();
//參數
trigger.getJobDataMap().put(ScheduleJobMode.JOB_PARAM_KEY, scheduleJob);
scheduler.rescheduleJob(triggerKey, trigger);
//暫停任務
if (scheduleJob.getStatus().equals(TaskSupport.TASK_STATUS_STOPPED)) {
pauseJob(scheduler, scheduleJob.getJobId());
}
} else {
throw new NullPointerException();
}
} catch (SchedulerException e) {
logger.info("更新定時任務失敗", e);
}
}
/**
* 立即執行任務
*/
public static void run(Scheduler scheduler, ScheduleJobMode scheduleJob) {
try {
//參數
JobDataMap dataMap = new JobDataMap();
dataMap.put(ScheduleJobMode.JOB_PARAM_KEY, scheduleJob);
scheduler.triggerJob(getJobKey(scheduleJob.getJobId()), dataMap);
} catch (SchedulerException e) {
logger.info("立即執行定時任務失敗", e);
}
}
/**
* 暫停任務
*/
public static void pauseJob(Scheduler scheduler, String jobId) {
try {
scheduler.pauseJob(getJobKey(jobId));
} catch (SchedulerException e) {
logger.info("暫停定時任務失敗", e);
}
}
/**
* 恢復任務
*/
public static void resumeJob(Scheduler scheduler, String jobId) {
try {
scheduler.resumeJob(getJobKey(jobId));
} catch (SchedulerException e) {
logger.info("暫停定時任務失敗", e);
}
}
/**
* 刪除定時任務
*/
public static void deleteScheduleJob(Scheduler scheduler, String jobId) {
try {
scheduler.deleteJob(getJobKey(jobId));
} catch (SchedulerException e) {
logger.info("刪除定時任務失敗", e);
}
}
}QuartzManager.java
package com.scheduler;
import com.wawj.fg.common.scheduler.ScheduleUtils;
import com.wawj.fg.model.baseinfo.scheduler.ScheduleJobMode;
import org.quartz.CronTrigger;
import org.quartz.Scheduler;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.scheduling.quartz.SchedulerFactoryBean;
import org.springframework.stereotype.Component;
import javax.annotation.PostConstruct;
import java.util.HashMap;
import java.util.List;
@Component
public class QuartzManager {
@Autowired
private SchedulerFactoryBean schedulerFactoryBean;
/**
* 項目啟動時，初始化定時器
*/
@PostConstruct
public void init() {
//查詢保存到數據的定時任務，本文沒有操作數據代碼，可自行完善
List<ScheduleJobMode> scheduleJobList = schedulerJobDao.queryList(new HashMap<String, Object>());
Scheduler scheduler = schedulerFactoryBean.getScheduler();
for (ScheduleJobMode scheduleJob : scheduleJobList) {
CronTrigger cronTrigger = ScheduleUtils.getCronTrigger(scheduler, scheduleJob.getJobId());
//如果不存在，則創建
if (cronTrigger == null) {
ScheduleUtils.createScheduleJob(scheduler, scheduleJob);
} else {
ScheduleUtils.updateScheduleJob(scheduler, scheduleJob);
}
}
}
/**
* 創建定時器
*/
public void createScheduleJob(ScheduleJobMode scheduleJob) {
Scheduler scheduler = schedulerFactoryBean.getScheduler();
ScheduleUtils.createScheduleJob(scheduler, scheduleJob);
}
/**
* 更新定時器
*/
public void update(ScheduleJobMode scheduleJob) {
Scheduler scheduler = schedulerFactoryBean.getScheduler();
ScheduleUtils.updateScheduleJob(scheduler, scheduleJob);
}
/**
* 刪除定時器
*/
public void deleteBatch(String[] jobIds) {
Scheduler scheduler = schedulerFactoryBean.getScheduler();
for (String jobId : jobIds) {
ScheduleUtils.deleteScheduleJob(scheduler, jobId);
}
}
/**
* 立刻執行一下定時器
*/
public void run(String[] jobIds) {
Scheduler scheduler = schedulerFactoryBean.getScheduler();
for (String jobId : jobIds) {
//queryObject(jobId) 是從數據庫中查詢出對象
ScheduleUtils.run(scheduler, queryObject(jobId));
}
}
/**
* 暫停定時任務
*/
public void pause(String[] jobIds) {
Scheduler scheduler = schedulerFactoryBean.getScheduler();
for (String jobId : jobIds) {
ScheduleUtils.pauseJob(scheduler, jobId);
}
}
/**
* 恢復定時任務
*/
public void resume(String[] jobIds) {
Scheduler scheduler = schedulerFactoryBean.getScheduler();
for (String jobId : jobIds) {
ScheduleUtils.resumeJob(scheduler, jobId);
}
}
}SpringUtils.java
package com.scheduler;
import com.wawj.fg.util.SpringContextUtils;
import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;
/**
* Spring Context 工具類
*/
@Component
public class SpringUtils implements ApplicationContextAware {
private static ApplicationContext applicationContext;
@Override
public void setApplicationContext(ApplicationContext applicationContext)
throws BeansException {
SpringContextUtils.applicationContext = applicationContext;
}
public static Object getBean(String name) {
return applicationContext.getBean(name);
}
public static <T> T getBean(String name, Class<T> requiredType) {
return applicationContext.getBean(name, requiredType);
}
public static boolean containsBean(String name) {
return applicationContext.containsBean(name);
}
public static boolean isSingleton(String name) {
return applicationContext.isSingleton(name);
}
public static Class<? extends Object> getType(String name) {
return applicationContext.getType(name);
}
}ScheduleRunnable.java
package com.scheduler;
import java.lang.reflect.Method;
import org.apache.commons.lang.StringUtils;
import org.apache.log4j.Logger;
import org.springframework.util.ReflectionUtils;
import com.scheduler;.SpringUtils;
/**
* 執行定時任務
*/
public class ScheduleRunnable implements Runnable {
private static final Logger logger = Logger.getLogger(ScheduleRunnable.class);
//類名
private Object target;
//方法名
private Method method;
//參數
private String params;
public ScheduleRunnable(String beanName, String methodName, String params) throws NoSuchMethodException{
this.target = SpringUtils.getBean(beanName);
this.params = params;
if(StringUtils.isNotBlank(params)){
this.method = target.getClass().getDeclaredMethod(methodName, String.class);
}else{
this.method = target.getClass().getDeclaredMethod(methodName);
}
}
@Override
public void run() {
try {
ReflectionUtils.makeAccessible(method);
if(StringUtils.isNotBlank(params)){
method.invoke(target, params);
}else{
method.invoke(target);
}
}catch (Exception e) {
logger.error("執行定時任務失敗",e);
throw new RuntimeException();
}
}
}ScheduleJob.java
package com.scheduler;
import com.wawj.fg.common.scheduler.ScheduleRunnable;
import com.wawj.fg.model.baseinfo.scheduler.ScheduleJobLogMode;
import com.wawj.fg.model.baseinfo.scheduler.ScheduleJobMode;
import com.wawj.fg.service.baseinfo.scheduler.ScheduleJobLogService;
import com.wawj.fg.util.SpringContextUtils;
import com.wawj.fg.util.UUIDUtil;
import org.apache.log4j.Logger;
import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;
import org.springframework.scheduling.quartz.QuartzJobBean;
import java.util.Date;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;
/**
* 定時任務
*/
public class ScheduleJob extends QuartzJobBean {
private static final Logger logger = Logger.getLogger(ScheduleJob.class);
//創建線層池 （創建一個單線程化的線程池）
private ExecutorService service = Executors.newSingleThreadExecutor();
@Override
protected void executeInternal(JobExecutionContext context) throws JobExecutionException {
ScheduleJobMode scheduleJob = (ScheduleJobMode) context.getMergedJobDataMap()
.get(ScheduleJobMode.JOB_PARAM_KEY);
//獲取spring bean
ScheduleJobLogService scheduleJobLogService = (ScheduleJobLogService) SpringContextUtils.getBean("scheduleJobLogService");
//數據庫保存執行記錄
ScheduleJobLogMode log = new ScheduleJobLogMode();
log.setLogId(UUIDUtil.getUUID());
log.setJobId(scheduleJob.getJobId());
log.setBeanName(scheduleJob.getBeanName());
log.setMethodName(scheduleJob.getMethodName());
log.setParams(scheduleJob.getParams());
log.setCreateTime(new Date());
//任務開始時間
long startTime = System.currentTimeMillis();
try {
//執行任務
logger.info("任務準備執行，任務ID：" + scheduleJob.getJobId());
ScheduleRunnable task = new ScheduleRunnable(scheduleJob.getBeanName(),
scheduleJob.getMethodName(), scheduleJob.getParams());
Future<?> future = service.submit(task);
future.get();
//任務執行總時長
long times = System.currentTimeMillis() - startTime;
log.setTimes((int) times);
//任務狀態 0：成功 1：失敗
log.setStatus("0");
logger.info("任務執行完畢，任務ID：" + scheduleJob.getJobId() + " 總共耗時：" + times + "毫秒");
} catch (Exception e) {
logger.error("任務執行失敗，任務ID：" + scheduleJob.getJobId(), e);
//任務執行總時長
long times = System.currentTimeMillis() - startTime;
log.setTimes((int) times);
//任務狀態 0：成功 1：失敗
log.setStatus("1");
log.setError(scheduleJob.getBeanName() + "." + scheduleJob.getMethodName());
} finally {
scheduleJobLogService.save(log);
}
}
}感謝各位的閱讀，以上就是“java中基于線層池Spring-quartz如何實現動態增刪除改和暫?；謴投〞r任務”的內容了，經過本文的學習后，相信大家對java中基于線層池Spring-quartz如何實現動態增刪除改和暫?；謴投〞r任務這一問題有了更深刻的體會，具體使用情況還需要大家實踐驗證。這里是億速云，小編將為大家推送更多相關知識點的文章，歡迎關注！
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