springmvc+spring线程池处理http并发请求数据同步控制问题

<bean id="taskExecutor"
class="org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor">
<!-- 核心线程数 -->
<property name="corePoolSize" value="3" />
<!-- 最大线程数 -->
<property name="maxPoolSize" value="10" />
<!-- 队列最大长度 >=mainExecutor.maxSize -->
<property name="queueCapacity" value="25" />
<!-- 线程池维护线程所允许的空闲时间 -->
<property name="keepAliveSeconds" value="300" />
<!-- 线程池对拒绝任务(无线程可用)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>

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 executor;

@Autowired
TestService testService;

@ResponseBody
@RequestMapping("/order")
public Map<String, Object> test(HttpServletRequest request){

//线程池+同步块
executor.execute(new Runnable() {
@Override
public void run() {
synchronized (testService) {
testService.insert(order);
}
}
});
return null;
}
}