线程池创建及使用--高效

1、依据系统合理创建线程池

　　/**
     * 获取系统处理器个数，作为线程池数量
     */
    int nThreads = Runtime.getRuntime().availableProcessors();
    ThreadFactory namedThreadFactory = new ThreadFactoryBuilder().setNameFormat("pool-%d").build();

    /**
     * Common Thread Pool
     */
    ExecutorService pool = new ThreadPoolExecutor(nThreads, 200, 0L, TimeUnit.MILLISECONDS, new LinkedBlockingQueue<Runnable>(1024), namedThreadFactory, new ThreadPoolExecutor.AbortPolicy());

2、任务的创建

package com.hikvision.highwaydoc.util;

import com.hikvision.highwaydoc.constants.EnumMinioType;

import java.io.ByteArrayInputStream;
import java.io.InputStream;
import java.util.concurrent.Callable;

/**
 * @author liuyueyi
 * @version 1.0.0
 * @ClassName UploadPicThread.java
 * @Description ----
 * @createTime 2023年01月04日 19:42:00
 */
public class UploadPicTask implements Callable<String> {

    private MinioTool minioTool;
    private byte[] data;
    private String fileName;
    private EnumMinioType minioBucket;

    public UploadPicTask(MinioTool minioTool, byte[] data, String fileName, EnumMinioType minioBucket) {
        this.minioTool = minioTool;
        this.data = data;
        this.fileName = fileName;
        this.minioBucket = minioBucket;
    }

    @Override
    public String call() throws Exception {
　　　　　// 业务代码
        InputStream inputStream;
        inputStream = new ByteArrayInputStream(data);
        String url = minioTool.uploadFile(inputStream, fileName, minioBucket);
        return url;
    }
}

 

3、线程池的使用（多任务以及单任务一样处理）

ArrayList<Future<String>> uploadPicTaskList = new ArrayList<>();
for (PictureDataDTO pictureDataDTO : pictureDataDTOSaveList) {
　　　　Future<String> future = pool.submit(new UploadPicTask(minioTool, pictureDataDTO.getPictureData().getData(), pictureDataDTO.getDocPicId() + suffix, EnumMinioType.OTHER));
　　　　uploadPicTaskList.add(future);
}