前言
- 多线程是每个程序员的噩梦,用得好可以提升效率很爽,用得不好就是埋汰的火葬场。
- 这里不深入介绍,主要是讲解一些标准用法,熟读唐诗三百首,不会作诗也会吟。
- 这里就介绍一下springboot中的多线程的使用,使用线程连接池去异步执行业务方法。
- 由于代码中包含详细注释,也为了保持文章的整洁性,我就不过多的做文字描述了。
VisiableThreadPoolTaskExecutor 编写
- new VisiableThreadPoolTaskExecutor() 方式创建线程池, 返回值是 Executor
点击查看代码
import lombok.extern.slf4j.Slf4j;
import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;
import org.springframework.util.concurrent.ListenableFuture;
import java.util.concurrent.Callable;
import java.util.concurrent.Future;
import java.util.concurrent.ThreadPoolExecutor;
/**
* @author love ice
* @create 2023-09-19 0:17
*/
@Slf4j
public class VisiableThreadPoolTaskExecutor extends ThreadPoolTaskExecutor {
@Override
public void execute(Runnable task){
showThreadPoolInfo("execute一个参数的方法执行");
}
@Override
public void execute(Runnable task, long startTimeout){
showThreadPoolInfo("execute两个参数的方法执行");
}
@Override
public Future<?> submit(Runnable task){
showThreadPoolInfo("submit Runnable task 入参方法执行");
return super.submit(task);
}
@Override
public <T> Future<T> submit(Callable<T> task){
showThreadPoolInfo("submit Callable<T> task 入参方法执行");
return super.submit(task);
}
@Override
public ListenableFuture<?> submitListenable(Runnable task){
showThreadPoolInfo("submitListenable(Runnable task) 方法执行");
return super.submitListenable(task);
}
@Override
public <T>ListenableFuture<T> submitListenable(Callable<T> task){
showThreadPoolInfo("submitListenable(Callable<T> task) 方法执行");
return super.submitListenable(task);
}
private void showThreadPoolInfo(String prefix){
ThreadPoolExecutor threadPoolExecutor = getThreadPoolExecutor();
log.info("{}, {}, taskCount[{}], completedTaskCount[{}], activeCount[{}], queueSize[{}]",
this.getThreadNamePrefix(), prefix, threadPoolExecutor.getTaskCount(),
threadPoolExecutor.getCompletedTaskCount(), threadPoolExecutor.getActiveCount(),
threadPoolExecutor.getQueue().size());
}
}
ThreadExceptionLogHandler 编写
点击查看代码
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Component;
/**
* @author love ice
* @create 2023-09-19 0:13
*/
@Slf4j
@Component
public class ThreadExceptionLogHandler implements Thread.UncaughtExceptionHandler {
@Override
public void uncaughtException(Thread t, Throwable e) {
log.error("[{}]线程池异常,异常信息为:{}",t.getName(),e.getMessage(),e);
}
}
ExecutorConfig 编写
点击查看代码
import com.test.redis.Infrastructure.handler.ThreadExceptionLogHandler;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.scheduling.annotation.EnableAsync;
import java.util.concurrent.*;
import java.util.concurrent.atomic.AtomicInteger;
/**
* 线程池配置
*
* @author love ice
* @create 2023-09-19 0:09
*/
@Configuration
@EnableAsync
public class ExecutorConfig {
@Value("${thread