update

src/main/java/com/imageServer/context/ShutdownResources.java

@@ -29,7 +29,7 @@ public void contextDestroyed(ServletContextEvent servletContextEvent) {
         log.info("监听处理处理web容器关闭事件");
 
         log.info("关闭线程池");
-        ExecutorFactory.getExecutor().shutdown();
+        ExecutorFactory.EXECUTE.getExecutor().shutdown();
 
     }
 }

src/main/java/com/imageServer/factory/ExecutorFactory.java

@@ -8,18 +8,31 @@
 
 /**
  * 并发线程执行对象工厂方法
+ * 单例
  * Copyright 2014-2015 the original ql
  * Created by QianLong on 15-1-23.
  */
-public class ExecutorFactory {
+public enum ExecutorFactory {
 
-    private static ExecutorService executorService = null;
+    EXECUTE;
 
+    private ExecutorService executorService;
+
+    ExecutorFactory(){
+        if(executorService == null){
+            final int cpuCore = Runtime.getRuntime().availableProcessors();
+            //线程数（当前CPU数+1）
+            final int poolSize = cpuCore+1;
+            //定义并发执行服务
+            executorService = Executors.newFixedThreadPool(poolSize);
+
+        }
+    }
     /**
      * 获取执行类
      * @return
      */
-    public static ExecutorService getExecutor(){
+    public ExecutorService getExecutor(){
         if(executorService == null){
             final int cpuCore = Runtime.getRuntime().availableProcessors();
             //线程数（当前CPU数+1）
@@ -31,6 +44,4 @@ public static ExecutorService getExecutor(){
         return executorService;
     }
 
-    private ExecutorFactory(){}
-
 }

src/main/java/com/imageServer/util/ExecuteThreadUtil.java

@@ -15,7 +15,7 @@
  */
 public class ExecuteThreadUtil {
 
-    private static ExecutorService executorService = ExecutorFactory.getExecutor();
+    private static ExecutorService executorService = ExecutorFactory.EXECUTE.getExecutor();
 
     /**
      * 执行一个无返回值的线程任务