java实现异步调用

1、使用线程池的逻辑实现异步调用

package com.ourlang.dataextract.controller;

import com.google.common.util.concurrent.ThreadFactoryBuilder;
import com.ourlang.dataextract.common.CommonResult;
import com.ourlang.dataextract.service.ISInPatientListService;
import org.apache.tomcat.util.threads.ThreadPoolExecutor;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

import java.util.concurrent.ExecutorService;
import java.util.concurrent.LinkedBlockingQueue;
import java.util.concurrent.ThreadFactory;
import java.util.concurrent.TimeUnit;

/**
 * 异步调用方法
 * <p>
 * https://github.com/ourlang
 * </p>
 *
 * @author ourlang
 */
@RestController
public class AsynCallController {

    private final ISInPatientListService inPatientListService;

    @Autowired
    public AsynCallController(ISInPatientListService inPatientListService) {
        this.inPatientListService = inPatientListService;
    }

    /**
     * 创建线程池 实现异步调用方法
     * @param serialNumber 住院号
     * @param itemIds      需要的导入的项目ID集合用逗号（`,`）隔开
     */
    private void createThead(String serialNumber, String itemIds) {
        ThreadFactory namedThreadFactory = new ThreadFactoryBuilder().setNameFormat("demo-pool-%d").build();
        ExecutorService singleThreadPool = new ThreadPoolExecutor(1, 1, 0L, TimeUnit.MILLISECONDS, new LinkedBlockingQueue<>(1024), namedThreadFactory, new ThreadPoolExecutor.AbortPolicy());
        //异步执行的方法
        singleThreadPool.execute(new PatientOtherData(serialNumber, itemIds));
        singleThreadPool.shutdown();

    }

    /**
     * 
     */
    private class PatientOtherData implements Runnable {
        private String serialNumber;
        private String itemIds;

        public PatientOtherData(String serialNumber, String itemIds) {
            this.serialNumber = serialNumber;
            this.itemIds = itemIds;
        }

        @Override
        public void run() {
            try {
                //异步保存患者的其他数据
                savePatientOtherData(serialNumber, itemIds);
            } catch (Exception e) {
                System.out.println(e);
            }

        }
    }


    /**
     * 保存患者的所有信息到我们的mysql数据库
     * 保存患者主索引 （这张表暂时没有用）
     * isgPatientListService.savePrimaryIndexData();
     *
     * @param itemIds      选择导入患者的哪些数据
     * @param serialNumber 住院流水号
     */
    @RequestMapping("/savePatientDataById")
    public CommonResult savePatientDataById(@RequestParam(name = "SERIAL_NUMBER") String serialNumber, @RequestParam(name = "itemIds") String itemIds) {
        CommonResult commonResult = new CommonResult();
        commonResult.setCode(CommonResult.SUCCESS);
        commonResult.setMsg(CommonResult.SUCCESS_MESSAGE);
        //        1 2两点可以保证患者列表有数据
        //        1、保存患者就诊记录
        inPatientListService.saveInPatientList(serialNumber);
        System.out.println("serialNumber=" + serialNumber);
        System.out.println("itemIds=" + itemIds);
        //创建异步调用的线程池
        createThead(serialNumber, itemIds);

        return commonResult;
    }


    /**
     * 保存患者需要的其他数据
     *
     * @param itemIds 需要的导入的项目ID集合用逗号（`,`）隔开
     */
    public void savePatientOtherData(String serialNumber, String itemIds) throws Exception {

        Thread.sleep(5000);
        System.out.println("savePatientOtherData--serialNumber=" + serialNumber);
        System.out.println("savePatientOtherData--itemIds=" + itemIds);
			//进行需要异步操作的一系列操作，比如存入数据库等等
    }
}

本文地址：https://blog.csdn.net/qq_37493556/article/details/107493653