for迭代，不怎么常用，可以看看

List<ServiceEntity> seList=new ArrayList<ServiceEntity>();Set set=new HashSet();  //list去掉重复的spinfoList<ServiceEntity> seList2=new ArrayList<ServiceEntity>();for (SpServerServiceSplit spServerServiceSplit : serviceSplitList) {seList=channelService.serviceList(spServerServiceSplit.getPdid());for (ServiceEntity serviceEntity : seList) {set.add(serviceEntity);}}seList2.addAll(set);request.setAttribute("seList", seList2);

SpServerServiceSplit split = new SpServerServiceSplit();ServiceEntity serviceEntity = new ServiceEntity();for(int i=0;i<serviceSplitList.size();i++){split = serviceSplitList.get(i);seList=channelService.serviceList(split.getPdid());for(int j=0;j<seList.size();j++){serviceEntity = seList.get(j);set.add(serviceEntity);}}两种不同的写法，第一种自己不常写

for (SpServerServiceSplit spServerServiceSplit : serviceSplitList) {}和这样写是一样的：SpServerServiceSplit spServerServiceSplit = new SpServerServiceSplit ();for(int i=0;i<serviceSplitList.size();i++){    spServerServiceSplit = serviceSplitList.get(i);}