Spring MVC的异步模式

引用参考
1、高性能的关键：Spring MVC的异步模式
https://www.cnblogs.com/winner-0715/p/5759432.html
2、Spring MVC 异步处理请求，提高程序性能
https://blog.csdn.net/he90227/article/details/52262163
3、springMVC整合异步请求特性
https://blog.csdn.net/u013755987/article/details/62424001

xml配置

<!-- 异步任务线程池 -->
	<bean id="threadPoolTaskExecutor" class="org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor">
	   <!-- 核心线程数 -->
	   <property name="corePoolSize" value="5"></property>
	   <!-- 最大线程数 -->
	   <property name="maxPoolSize" value="50"></property>
	   <!-- 队列容量 -->
	   <property name="queueCapacity" value="20"></property>
	   <!-- 线程池维护线程所允许的空闲时间 -->
       <property name="keepAliveSeconds" value="1000" />
       <!-- 线程池对被拒绝(无线程可用)任务的处理策略 ThreadPoolExecutor.CallerRunsPolicy策略 ,调用者的线程会执行该任务,如果执行器已关闭,则丢弃  -->
       <property name="rejectedExecutionHandler">
       		<bean class="java.util.concurrent.ThreadPoolExecutor$CallerRunsPolicy" />
       </property>
	</bean>

controller里面：

    @Autowired
    @Qualifier("threadPoolTaskExecutor")
    private AsyncTaskExecutor asyncTaskExecutor;
//...
Callable<String> callableTask= new Callable<String>() {
            @Override
            public String call() throws Exception {
                //add code here
            }
        };
        return new WebAsyncTask<String>(30000L, asyncTaskExecutor, callableTask);