如下代码即可：
@Bean
public TaskScheduler taskScheduler() {
ThreadPoolTaskScheduler taskExecutor = new ThreadPoolTaskScheduler();
taskExecutor.setPoolSize(50);
return taskExecutor;
}
定时任务重复时，只有一个可以执行。
如下
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Component;
import java.time.LocalDateTime;
@Component
public class MyScheduled {
@Scheduled(cron = "0/5 * * * * ?")
public void execute1(){
String curName = Thread.currentThread().getName() ;
System.out.println("当前时间:"+LocalDateTime.now()+" 任务execute1对应的线程名: "+curName);
try {
Thread.sleep(1000);
} catch (Exception e) {
e.printStackTrace();
}
}
@Scheduled(cron = "0/5 * * * * ?")
public void execute2(){
String curName = Thread.currentThread().getName() ;
System.out.println("当前时间:"+LocalDateTime.now()+" 任务execute2对应的线程名: "+curName);
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
通过执行可以看到，打印线程名称为同一个。即如果不手动指定线程池，则默认启动单线程，进行执行定时任务。
需要手动指定线程池，如下
import org.springframework.context.annotation.Bean;
import org.springframework.scheduling.TaskScheduler;
import org.springframework.scheduling.annotation.EnableScheduling;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.scheduling.concurrent.ThreadPoolTaskScheduler;
import org.springframework.stereotype.Component;
import java.time.LocalDateTime;
@Component
@EnableScheduling
public class MyScheduled {
@Bean
public TaskScheduler taskScheduler() {
ThreadPoolTaskScheduler taskScheduler = new ThreadPoolTaskScheduler();
taskScheduler.setPoolSize(50);
return taskScheduler;
}
@Scheduled(cron = "0/5 * * * * ?")
public void execute1(){
String curName = Thread.currentThread().getName() ;
System.out.println("当前时间:"+LocalDateTime.now()+" 任务execute1对应的线程名: "+curName);
try {
Thread.sleep(1000);
} catch (Exception e) {
e.printStackTrace();
}
}
@Scheduled(cron = "0/5 * * * * ?")
public void execute2(){
String curName = Thread.currentThread().getName() ;
System.out.println("当前时间:"+LocalDateTime.now()+" 任务execute2对应的线程名: "+curName);
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
此时，多个定时任务，是不通的线程执行，同时，定时任务可以重叠执行。
以上为个人经验，希望能给大家一个参考，也希望大家多多支持。
