springmvc+spring thread pool processing HTTP concurrency Request data synchronization control problem

Spring configuration file Add thread pool configuration

<bean id= "Taskexecutor"  
        class= "Org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor" >  
        <!--Core threads--  
        <property name= "Corepoolsize" value= "3"/>  
        <!--max Threads--  
        < Property Name= "Maxpoolsize" value= "ten"/>  
        <!--queue Maximum length >=mainexecutor.maxsize--  
        <property Name= "queuecapacity" value= "/>  
        <!--thread pool to maintain idle time allowed by thread--  
        <property name=" Keepaliveseconds " Value= the/>  
        <!--thread Pool handles the policy of rejecting a task (a wireless thread is available) Threadpoolexecutor.callerrunspolicy policy, the caller's thread executes the task, and if the actuator is closed, is discarded.  --  
        <property name= "Rejectedexecutionhandler" >  
            <bean class= " Java.util.concurrent.threadpoolexecutor$callerrunspolicy "/>  
        </property>  
    </bean>  

Controller class

Package Com.test.controller;  
Import Java.util.HashMap;  
Import Java.util.Map;  

Import Java.util.UUID;  

Import Javax.servlet.http.HttpServletRequest;  
Import org.springframework.beans.factory.annotation.Autowired;  
Import Org.springframework.core.task.TaskExecutor;  
Import Org.springframework.stereotype.Controller;  
Import Org.springframework.web.bind.annotation.ModelAttribute;  
Import org.springframework.web.bind.annotation.RequestMapping;  

Import Org.springframework.web.bind.annotation.ResponseBody;  
Import Com.test.entity.Order;  
Import Com.test.entity.Test;  

Import Com.test.service.TestService; @Controller @RequestMapping ("/test") public class TestController {@Autowired private taskexecutor execut  

    Or  

    @Autowired Testservice Testservice;  

        @ResponseBody @RequestMapping ("/order") public map<string, object> test (HttpServletRequest request) {  
      Thread pool + sync block Executor.execute (new Runnable () {      @Override public void Run () {synchronized (testservice) {tes  
                Tservice.insert (order);  
        }  
            }  
        });  
    return null;   }  
}

Database has a field num value of: 382
HTTP every request, NUM will-1
Simulate concurrent 500 requests
The result is as shown: