浅谈一下SpringBoot中的异步任务

package com.yuhuofei.controller;

import com.yuhuofei.service.AsyncService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

/**
 * @Description
 * @ClassName AsyncController
 * @Author yuhuofei
 * @Date 2022/8/22 21:51
 * @Version 1.0
 */
@RestController
@RequestMapping("/async")
public class AsyncController {

    @Autowired
    private AsyncService asyncService;

    @GetMapping("/getAsyncHello")
    public String getAsyncHello(){
        return asyncService.getHello();
    }
}

package com.yuhuofei.service;

/**
 * @Description
 * @ClassName AsyncService
 * @Author yuhuofei
 * @Date 2022/8/22 21:55
 * @Version 1.0
 */
public interface AsyncService {

    String getHello();
}

package com.yuhuofei.service;

import org.springframework.scheduling.annotation.Async;
import org.springframework.stereotype.Service;

/**
 * @Description
 * @ClassName AsyncServiceImpl
 * @Author yuhuofei
 * @Date 2022/8/22 21:55
 * @Version 1.0
 */
@Service
public class AsyncServiceImpl implements AsyncService {

    @Override
    @Async
    public String getHello() {
        return "hello，测试一下";
    }
}

package com.yuhuofei.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.scheduling.annotation.EnableAsync;
import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;

import java.util.concurrent.Executor;
import java.util.concurrent.ThreadPoolExecutor;

/**
 * @author yuhuofei
 * @version 1.0
 * @description 自定义异步线程池
 * @date 2022/8/22 21:55
 */
@Configuration
@EnableAsync
public class AsyncExecutorConfig {
    private static final int CORE_POOL_SIZE = 10;

    private static final int MAX_POOL_SIZE = 20;

    private static final int QUEUE_CAPACITY = 2000;

    private static final String THREAD_NAME_PREFIX = "AsyncExecutor-self";

    private static final int KEEP_ALIVE_SECONDS = 60 * 10;

    @Bean("asyncExecutor")
    public Executor asyncExecutor() {
        ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
        executor.setCorePoolSize(CORE_POOL_SIZE);
        executor.setMaxPoolSize(MAX_POOL_SIZE);
        executor.setQueueCapacity(QUEUE_CAPACITY);
        executor.setThreadNamePrefix(THREAD_NAME_PREFIX);
        executor.setAllowCoreThreadTimeOut(true);
        executor.setKeepAliveSeconds(KEEP_ALIVE_SECONDS);
        executor.setRejectedExecutionHandler(new ThreadPoolExecutor.CallerRunsPolicy());
        executor.initialize();
        return executor;
    }
}

package com.yuhuofei.service;

import org.springframework.scheduling.annotation.Async;
import org.springframework.stereotype.Service;

/**
 * @Description
 * @ClassName AsyncServiceImpl
 * @Author yuhuofei
 * @Date 2022/8/22 21:55
 * @Version 1.0
 */
@Service
public class AsyncServiceImpl implements AsyncService {

    @Override
    @Async("asyncExecutor")
    public String getHello() {
        return "hello，测试一下";
    }
}