Spring线程池开发实战
本文提供了三个Spring多线程开发的例子,由浅入深,由于例子一目了然,所以并未做过多的解释。诸位一看便知。
前提条件:
1)在Eclipse创建一个Java项目,我取名为SpringThreadDemo。
2)项目所需的JAR包如图所示:
下面开始。
注:项目源码已经托管到GitHub,
例子1:Spring结合Java线程。
通过继承Thread创建一个简单的Java线程,然后使用@Component让Spring容器管理此线程,Bean的范围必须是prototype,因此每个请求都会返回一个新实例,运行每个单独的线程。
PrintThread.java
[java]
package com.chszs.thread;
import org.springframework.stereotype.Component;
import org.springframework.context.annotation.Scope;
@Component
@Scope("prototype")
public class PrintThread extends Thread{
@Override
public void run(){
System.out.println(getName() + " is running.");
try{
Thread.sleep(5000);
}catch(InterruptedException e){
e.printStackTrace();
}
System.out.println(getName() + " is running again.");
}
}
AppConfig.java
[java]
package com.chszs.config;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
@Configuration
@ComponentScan(basePackages="com.chszs.thread")
public class AppConfig {
}
App.java
[java]
package com.chszs;
import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;
import com.chszs.config.AppConfig;
import com.chszs.thread.PrintThread;
public class App {
public static void main(String[] args){
ApplicationContext ctx =
new AnnotationConfigApplicationContext(AppConfig.class);
PrintThread printThread1 = (PrintThread)ctx.getBean("printThread");
printThread1.setName("Thread 1");
PrintThread printThread2 = (PrintThread)ctx.getBean("printThread");
printThread2.setName("Thread 2");
PrintThread printThread3 = (PrintThread)ctx.getBean("printThread");
printThread3.setName("Thread 3");
PrintThread printThread4 = (PrintThread)ctx.getBean("printThread");
printThread4.setName("Thread 4");
PrintThread printThread5 = (PrintThread)ctx.getBean("printThread");
printThread5.setName("Thread 5");
printThread1.start();
printThread2.start();
printThread3.start();
printThread4.start();
printThread5.start();
}
}
输出:
Thread 1 is running.
Thread 2 is running.
Thread 4 is running.
Thread 5 is running.
Thread 3 is running.
Thread 2 is running again.
Thread 1 is running again.
Thread 5 is running again.
Thread 4 is running again.
Thread 3 is running again.
例子2:Spring线程池结合非Spring托管Bean。
使用Spring的ThreadPoolTaskExecutor类创建一个线程池。执行线程无需受Spring容器的管理。
PrintTask.java
[java]
package com.chszs.thread;
public class PrintTask implements Runnable{
String name;
public PrintTask(String name){
this.name = name;
}
@Override
public void run() {
System.out.println(name + " is running.");
try{
Thread.sleep(5000);
}catch(InterruptedException e){
e.printStackTrace();
&
补充:软件开发 , Java ,