spring用单例模型做高速缓存

Spring 高速缓存 先来一个单例模型，里面的重点是有一个 map，可以获取内存空间。单例模型的话，可以 自己访问自己，内部数据，不会被垃圾回收机制回收。 Component public class AutoReplyCache private static HashMap cacheMap; Autowired private AutoreplyListService autoreplyListService; private static AutoReplyCache arcache; private byte lock = new byte0; public static AutoReplyCache getInstance() if(arcache= null) arcache = new AutoReplyCache(); return arcache; public AutoReplyCache() public synchronized void loadAll() System.out.println(“=“+“得到缓存 =“); cacheMap=new HashMap(); List arlistlist =autoreplyListService.getList(); if(arlistlist != null) setCacheMap(arlistlist); System.out.println(“=“+“得到缓存完毕=“); public synchronized void reloadAll() System.out.println(“=“+“重新得到缓存=“); List arlistlist = autoreplyListService.getList(); if(arlistlist != null) cacheMap.clear(); setCacheMap(arlistlist); System.out.println(“=“+“重新得到缓存=“); private void setCacheMap(List arlistlist) for (AutoreplyList arlist : arlistlist) cacheMap.put(String.valueOf(arlist.getNum(),arlist); public synchronized void add(AutoreplyList arlist) cacheMap.put(String.valueOf(arlist.getNum(),arlist); public synchronized void update(AutoreplyList arlist) cacheMap.put(String.valueOf(arlist.getNum(), arlist); public synchronized AutoreplyList findarlistByID(String id) if(cacheMap.values()!=null iter.hasNext();) AutoreplyList arlist = (AutoreplyList) iter.next(); if(id.equals(String.valueOf(arlist.getId() return arlist; return null; public synchronized List getallCache() List listAll=new ArrayList(); for (Iterator iter = cacheMap.values().iterator(); iter.hasNext();) AutoreplyList arlist = (AutoreplyList) iter.next(); listAll.add(arlist); return listAll; public void removeCusCache(AutoreplyList cus) synchronized (lock) cacheMap.remove(String.valueOf(cus.getId(); 然后是配置，在 spring-servlet.xml 中加下面这句话 其中 loadAll 是启动时所要开始的方法。Singleton 是单例模型 最后说一下访问方法。 AutoReplyCache tmpcache=AutoReplyCache.getInstance(); List ar