JAVA 数据筛选（第一笔数据与第二笔数据比较）

第一笔数据与第二笔数据比较

                Map<String, Object> jHpictureMap = new HashMap<String, Object>();
                // 存放照片SID
                StringBuilder jHpictureIds = new StringBuilder();
                
                for (int i = 0 , size = jHActualPictureList.size(); i < size; i++) {
                    
                    // 当前笔
                    Map<String, Object> object = jHActualPictureList.get(i);
                    String storeDisplaySid = String.valueOf(object.get("STORE_DISPLAY_SID"));
                    String pictureId = String.valueOf(object.get("TASK_PICTURE_SID"));
                    
                    // 下一笔（当为最后一笔时，设置下一笔为空） 
                    Map<String, Object> nextObject = (i == size-1) ? null : jHActualPictureList.get(i+1);
                    
                    // 将 当前pictureId 拼接至 jHpictureIds
                    jHpictureIds.append((jHpictureIds.length() > 0) ? ("," + pictureId) : pictureId);
                    
                    // 如果当前笔不等于下一笔，或者当前笔为最后一笔
                    if ((null != nextObject && !String.valueOf(nextObject.get("STORE_DISPLAY_SID")).equals(storeDisplaySid)) || i == size - 1) {
                        
                        jHpictureMap.put(String.valueOf(object.get("STORE_DISPLAY_SID")), String.valueOf(jHpictureIds));
                        
                        // 不是最后一笔，创建一个新的 jHpictureIds实例，是最后一笔清空jHpictureIds
                        jHpictureIds = (i == size-1) ? null : new StringBuilder();
                    }
                }
                
                logger.errorT("=================测试:" + jHpictureMap.toString());