项目实践过程中碰到一个动态管理定时任务的需求：针对每个人员进行信息的定时更新，具体更新时间可随时调整、启动、暂定等。
思路
将每个人员信息的定时配置保存到数据库中，这样实现了任务的动态展示和管理。任务的每一次新增或变更，都会去数据库变更信息。
设置一个统一的任务管理器，专门负责动态任务的增删改查。
pom依赖
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<?xml version="1.0" encoding="utf-8"?><project xmlns="http://maven.apache.org/pom/4.0.0" xmlns:xsi="http://www.w3.org/2001/xmlschema-instance" xsi:schemalocation="http://maven.apache.org/pom/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelversion>4.0.0</modelversion> <groupid>com.example</groupid> <artifactid>dynamic-quartz</artifactid> <version>0.0.1-snapshot</version> <packaging>jar</packaging> <name>dynamic-quartz</name> <description>动态定时任务管理</description> <parent> <groupid>org.springframework.boot</groupid> <artifactid>spring-boot-starter-parent</artifactid> <version>2.0.2.release</version> <relativepath/> <!-- lookup parent from repository --> </parent> <dependencies> <dependency> <groupid>org.springframework.boot</groupid> <artifactid>spring-boot-starter-web</artifactid> </dependency> <dependency> <groupid>org.springframework.boot</groupid> <artifactid>spring-boot-starter</artifactid> </dependency> <dependency> <groupid>org.springframework</groupid> <artifactid>spring-context-support</artifactid> </dependency> <dependency> <groupid>org.springframework.boot</groupid> <artifactid>spring-boot-starter-test</artifactid> <scope>test</scope> </dependency> <dependency> <groupid>org.mybatis.spring.boot</groupid> <artifactid>mybatis-spring-boot-starter</artifactid> <version>1.1.1</version> </dependency> <!-- jdbc driver --> <dependency> <groupid>mysql</groupid> <artifactid>mysql-connector-java</artifactid> <version>5.1.44</version> </dependency> <dependency> <groupid>org.quartz-scheduler</groupid> <artifactid>quartz</artifactid> <version>2.3.0</version> </dependency> </dependencies><build> <plugins> <plugin> <groupid>org.springframework.boot</groupid> <artifactid>spring-boot-maven-plugin</artifactid> </plugin> </plugins></build></project>application.ymlspring: datasource: url: jdbc:mysql://localhost:3306/wujiwen username: root password: root driver-class-name: com.mysql.jdbc.driver profiles: active: devlogback-spring.xml<configuration> <jmxconfigurator /> <appender name="stdout" class="ch.qos.logback.core.consoleappender"> <layout class="ch.qos.logback.classic.patternlayout"> <pattern>%date [%thread] %-5level %logger{80} - %msg%n</pattern> </layout> </appender> <logger name="org.springframework"> <level value="error" /> </logger> <logger name="org.mybatis"> <level value="error" /> </logger> <logger name="java.sql.connection"> <level value="debug" /> </logger> <logger name="java.sql.statement"> <level value="debug" /> </logger> <logger name="java.sql.preparedstatement"> <level value="debug" /> </logger> <logger name="java.sql.resultset"> <level value="debug"/> </logger> <logger name="org.apache.http"> <level value="info" /> </logger> <logger name="org.quartz"> <level value="info" /> </logger> <springprofile name="dev,test"> <root> <level value="debug" /> <appender-ref ref="stdout" /> </root> </springprofile></configuration>cronentity.java保存在数据库中的表达式管理器.package com.example.dynamicquartz.bean;import java.io.serializable;import java.util.date;/** * created with intellij idea. * packagename : com.example.dynamicquartz.bean * author : wujw * date : 2018/9/9 16:23 * version : 1.0.0 * description : todo */public class cronentity implements serializable { private static final long serialversionuid = -3406421161273529348l; private string id; private string userid; //用户标识 private string cron; //表达式 private string quarzname; //任务名称 private string schedulerclass;//定时任务类 private date time; public string getid() { return id; } public void setid(string id) { this.id = id; } public string getuserid() { return userid; } public void setuserid(string userid) { this.userid = userid; } public string getcron() { return cron; } public void setcron(string cron) { this.cron = cron; } public string getquarzname() { return quarzname; } public void setquarzname(string quarzname) { this.quarzname = quarzname; } public string getschedulerclass() { return schedulerclass; } public void setschedulerclass(string schedulerclass) { this.schedulerclass = schedulerclass; } public date gettime() { return time; } public void settime(date time) { this.time = time; } @override public string tostring() { return "cronentity{" + "id='" + id + '\'' + ", userid='" + userid + '\'' + ", cron='" + cron + '\'' + ", quarzname='" + quarzname + '\'' + ", schedulerclass='" + schedulerclass + '\'' + ", time=" + time + '}'; }}cronmapperpackage com.example.dynamicquartz.dao;import com.example.dynamicquartz.bean.cronentity;import org.apache.ibatis.annotations.*;import java.util.list;/** * created with intellij idea. * packagename : com.example.dynamicquartz * author : wujw * date : 2018/9/9 20:14 * version : 1.0.0 * description : todo */@mapperpublic interface cronmapper{ @select("select * from cron_table where id = #{id}") @results({ @result(property = "id", column = "id"), @result(property = "userid", column = "user_id"), @result(property = "cron", column = "cron"), @result(property = "quarzname", column = "quarz_name"), @result(property = "schedulerclass", column = "scheduler_class"), @result(property = "time", column = "time") }) cronentity load(string id); @insert("insert into cron_table(id,userid,cron,quartzname,schedulerclass,time)" + "values(#{id},#{user_id},#{cron},#{quartz_name},#{scheduler_class},# {time})") void insert(cronentity cronentity); @select("select * from cron_table") @results({ @result(property = "id", column = "id"), @result(property = "userid", column = "user_id"), @result(property = "cron", column = "cron"), @result(property = "quarzname", column = "quarz_name"), @result(property = "schedulerclass", column = "scheduler_class"), @result(property = "time", column = "time") }) list<cronentity> queryall(); @update("update cron_table set cron=#{1} where id =#{0}") void updatecron(string id,string cron);}icronservicepackage com.example.dynamicquartz.serivce;import com.example.dynamicquartz.bean.cronentity;import java.util.list;/** * created with intellij idea. * packagename : com.example.dynamicquartz * author : wujw * date : 2018/9/9 19:54 * version : 1.0.0 * description : todo */public interface icronservice{ void sendemail(string quartzname); void sendsms(string quartzname); cronentity findbycronid(string id ); void update(cronentity cronentity); list<cronentity> findall();}cronserviceimplpackage com.example.dynamicquartz.serivce;import com.example.dynamicquartz.bean.cronentity;import com.example.dynamicquartz.dao.cronmapper;import org.springframework.beans.factory.annotation.autowired;import org.springframework.stereotype.service;import java.util.list;/** * created with intellij idea. * packagename : com.example.dynamicquartz.serivce * author : wujw * date : 2018/9/9 19:55 * version : 1.0.0 * description : todo */@servicepublic class cronserviceimpl implements icronservice{ @autowired private cronmapper cronmapper; @override public void sendemail(string quartzname) { system.out.println(quartzname +" 正在发送邮件"); } @override public void sendsms(string quartzname) { system.out.println(quartzname +"正在发送短信"); } @override public cronentity findbycronid(string id) { return this.cronmapper.load(id); } @override public void update(cronentity cronentity) { this.cronmapper.insert(cronentity); } @override public list<cronentity> findall() { return this.cronmapper.queryall(); }}quartzmanagerpackage com.example.dynamicquartz.serivce;import com.example.dynamicquartz.bean.cronentity;import org.quartz.*;import org.springframework.beans.factory.annotation.autowired;import org.springframework.context.annotation.configuration;import java.util.date;/** * created with intellij idea. * packagename : com.example.dynamicquartz * author : wujw * date : 2018/9/9 19:31 * version : 1.0.0 * description : todo */@configurationpublic class quartzmanager { @autowired private scheduler scheduler; @autowired private icronservice icronservice; public void start(string id) throws schedulerexception { cronentity cronentity = icronservice.findbycronid(id); if(cronentity!= null){ startjob(scheduler,cronentity.getquarzname(),cronentity.getcron(),cronentity.getschedulerclass()); } } private void startjob(scheduler scheduler,string name,string cron,string classname) throws schedulerexception { // 通过jobbuilder构建jobdetail实例，jobdetail规定只能是实现job接口的实例 // jobdetail 是具体job实例 class<job> jobclass = null; try { //实例化具体的job任务 jobclass = (class<job>) class.forname(classname); } catch (classnotfoundexception e) { e.printstacktrace(); } jobdetail jobdetail = jobbuilder.newjob(jobclass).withidentity(name, "group1").build(); // 基于表达式构建触发器 cronschedulebuilder cronschedulebuilder = cronschedulebuilder.cronschedule(cron); // crontrigger表达式触发器 继承于trigger // triggerbuilder 用于构建触发器实例 crontrigger crontrigger = triggerbuilder.newtrigger().withidentity(name, "group1") .withschedule(cronschedulebuilder).build(); scheduler.schedulejob(jobdetail, crontrigger); } /** * 获取job信息 * * @param name * @param group * @return * @throws schedulerexception */ public string getjobinfo(string name, string group) throws schedulerexception { triggerkey triggerkey = new triggerkey(name, group); crontrigger crontrigger = (crontrigger) scheduler.gettrigger(triggerkey); return string.format("time:%s,state:%s", crontrigger.getcronexpression(), scheduler.gettriggerstate(triggerkey).name()); } /** * 修改某个任务的执行时间 * * @param name * @param group * @param time * @return * @throws schedulerexception */ public boolean modifyjob(string name, string group, string time) throws schedulerexception { date date = null; triggerkey triggerkey = new triggerkey(name, group); crontrigger crontrigger = (crontrigger) scheduler.gettrigger(triggerkey); string oldtime = crontrigger.getcronexpression(); if (!oldtime.equalsignorecase(time)) { cronschedulebuilder cronschedulebuilder = cronschedulebuilder.cronschedule(time); crontrigger trigger = triggerbuilder.newtrigger().withidentity(name, group) .withschedule(cronschedulebuilder).build(); date = scheduler.reschedulejob(triggerkey, trigger); } return date != null; } /** * 暂停所有任务 * * @throws schedulerexception */ public void pausealljob() throws schedulerexception { scheduler.pauseall(); } /** * 暂停某个任务 * * @param name * @param group * @throws schedulerexception */ public void pausejob(string name, string group) throws schedulerexception { jobkey jobkey = new jobkey(name, group); jobdetail jobdetail = scheduler.getjobdetail(jobkey); if (jobdetail == null) return; scheduler.pausejob(jobkey); } /** * 恢复所有任务 * * @throws schedulerexception */ public void resumealljob() throws schedulerexception { scheduler.resumeall(); } /** * 恢复某个任务 * * @param name * @param group * @throws schedulerexception */ public void resumejob(string name, string group) throws schedulerexception { jobkey jobkey = new jobkey(name, group); jobdetail jobdetail = scheduler.getjobdetail(jobkey); if (jobdetail == null) return; scheduler.resumejob(jobkey); } /** * 删除某个任务 * * @param name * @param group * @throws schedulerexception */ public void deletejob(string name, string group) throws schedulerexception { jobkey jobkey = new jobkey(name, group); jobdetail jobdetail = scheduler.getjobdetail(jobkey); if (jobdetail == null) return; scheduler.deletejob(jobkey); }}创建两个task类，分别执行不同的任务public class emailtask implements job { private logger logger = loggerfactory.getlogger(emailtask.class); @autowired private icronservice icronservice; @override public void execute(jobexecutioncontext jobexecutioncontext) throws jobexecutionexception { logger.info("emailtask task start execute."); //模拟任务执行 icronservice.sendemail(jobexecutioncontext.getjobdetail().getkey().getname()); }}public class smstask implements job { private logger logger = loggerfactory.getlogger(smstask.class); @autowired private icronservice icronservice; @override public void execute(jobexecutioncontext jobexecutioncontext) throws jobexecutionexception { logger.info("smstask task start execute."); //模拟任务执行 icronservice.sendsms(jobexecutioncontext.getjobdetail().getkey().getname()); }}schedulercontroller@restcontroller@requestmapping("/scheduler")public class schedulercontroller{ @autowired quartzmanager quartzmanager; @requestmapping(value = "/start", method = requestmethod.get) @responsebody public string start(@requestparam(name = "id", defaultvalue = "") string id) { try { quartzmanager.start(id); } catch (schedulerexception e) { e.printstacktrace(); } return "启动成功"; }}cron_table.sqlcreate table `cron_table` ( `id` varchar(11) collate utf8_bin not null, `user_id` varchar(11) collate utf8_bin default null, `cron` varchar(255) collate utf8_bin default null, `quarz_name` varchar(255) collate utf8_bin default null, `scheduler_class` varchar(255) collate utf8_bin default null, `time` datetime default null, primary key (`id`)) engine=myisam default charset=utf8 collate=utf8_bin;-- ------------------------------ records of cron_table-- ----------------------------insert into `cron_table` values ('1', 'aaa', '0/5 * * * * ?', '用户aaa', 'com.example.dynamicquartz.job.smstask', '2018-09-06 20:26:55');insert into `cron_table` values ('2', 'bbb', '0/2 * * * * ?', '用户bbb', 'com.example.dynamicquartz.job.emailtask', '2018-09-09 21:02:08');测试结果http://localhost:8080/scheduler/start?id=1http://localhost:8080/scheduler/start?id=22018-09-09 21:05:08,386 [http-nio-8080-exec-2] debug com.example.dynamicquartz.dao.cronmapper.load - ==> preparing: select * from cron_table where id = ? 2018-09-09 21:05:08,408 [http-nio-8080-exec-2] debug com.example.dynamicquartz.dao.cronmapper.load - ==> parameters: 1(string)2018-09-09 21:05:08,427 [http-nio-8080-exec-2] debug com.example.dynamicquartz.dao.cronmapper.load - <== total: 12018-09-09 21:05:10,036 [quartzscheduler_worker-1] info com.example.dynamicquartz.job.smstask - smstask task start execute.用户aaa正在发送短信2018-09-09 21:05:11,581 [http-nio-8080-exec-1] debug com.example.dynamicquartz.dao.cronmapper.load - ==> preparing: select * from cron_table where id = ? 2018-09-09 21:05:11,582 [http-nio-8080-exec-1] debug com.example.dynamicquartz.dao.cronmapper.load - ==> parameters: 2(string)2018-09-09 21:05:11,584 [http-nio-8080-exec-1] debug com.example.dynamicquartz.dao.cronmapper.load - <== total: 12018-09-09 21:05:12,013 [quartzscheduler_worker-2] info com.example.dynamicquartz.job.emailtask - emailtask task start execute.用户bbb 正在发送邮件2018-09-09 21:05:14,002 [quartzscheduler_worker-3] info com.example.dynamicquartz.job.emailtask - emailtask task start execute.用户bbb 正在发送邮件2018-09-09 21:05:15,001 [quartzscheduler_worker-4] info com.example.dynamicquartz.job.smstask - smstask task start execute.用户aaa正在发送短信2018-09-09 21:05:16,001 [quartzscheduler_worker-5] info com.example.dynamicquartz.job.emailtask - emailtask task start execute.用户bbb 正在发送邮件2018-09-09 21:05:18,001 [quartzscheduler_worker-6] info com.example.dynamicquartz.job.emailtask - emailtask task start execute.用户bbb 正在发送邮件2018-09-09 21:05:20,000 [quartzscheduler_worker-7] info com.example.dynamicquartz.job.smstask - smstask task start execute.用户aaa正在发送短信2018-09-09 21:05:20,001 [quartzscheduler_worker-8] info com.example.dynamicquartz.job.emailtask - emailtask task start execute.用户bbb 正在发送邮件2018-09-09 21:05:22,001 [quartzscheduler_worker-9] info com.example.dynamicquartz.job.emailtask - emailtask task start execute.用户bbb 正在发送邮件2018-09-09 21:05:24,000 [quartzscheduler_worker-10] info com.example.dynamicquartz.job.emailtask - emailtask task start execute.用户bbb 正在发送邮件2018-09-09 21:05:25,001 [quartzscheduler_worker-1] info com.example.dynamicquartz.job.smstask - smstask task start execute.用户aaa正在发送短信2018-09-09 21:05:26,000 [quartzscheduler_worker-2] info com.example.dynamicquartz.job.emailtask - emailtask task start execute.用户bbb 正在发送邮件2018-09-09 21:05:28,001 [quartzscheduler_worker-3] info com.example.dynamicquartz.job.emailtask - emailtask task start execute. |
可以看出，aaa的间隔时间时5s,bbb的间隔时间时2s.
到这里我们的测试已经一本完成了，接下来就是针对任务的更新，停止和启动了，只需要调用 quartzmanager 对应的方法即可，必要时更新一下数据库就好啦。
总结
以上所述是小编给大家介绍的quartz+spring boot实现动态管理定时任务，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服务器之家网站的支持！
原文链接：http://www.cnblogs.com/wujiwen/p/9615120.html
