引言

1.一般首页请求接口查询，加载比较多可以采用线程池submit 实现并行运行

spring 控制层代码

public ModelAndView index(HttpServletRequest request, HttpServletResponse response) throws Exception {        long begin = System.currentTimeMillis();          ExecutorService serviceTaskPool = ExecutorPools.getInstance().serviceTaskPool;         #第一个线程处理逻辑任务        Future
    
     
      > a_future = serviceTaskPool.submit(new Callable
      
       
        >() {            @Override            public HashMap
        
          call() throws Exception {                       //TODO 业务逻辑                        return recommandMap;            }        });       #第二个线程处理逻辑任务        Future
         
          
           > b_future = serviceTaskPool.submit(new Callable
           
            
             >() { @Override public HashMap
             
               call() throws Exception { //TODO 业务逻辑 return map; } }); ModelAndView mv=new ModelAndView(); #调用get()方法进行休眠获取上面两个线程处理返回的结果 mv.addAllObjects(a_future.get()); mv.addAllObjects(b_future.get()); mv.setViewName("/index"); long end = System.currentTimeMillis(); logger.info("visit index,spend：{} ms",(end-begin)); return mv; }
             
            
           
          
         
        
       
      
     
    

单例线程池

public final class ExecutorPools {		private static final Logger logger = LoggerFactory.getLogger(ExecutorPools.class);		public final ExecutorService mqSubmitter=  Executors.newFixedThreadPool(40);	public final ExecutorService serviceTaskPool = Executors.newFixedThreadPool(100);	}```bin