相对Vector，ArrayList在什么的情况下会因异步出现问题

List content = new Vector();//在这里实例化，每次分配新的内存空间。所以不管是vector还是arraylist都不会引起安全问题？？？
    			
    			List rowContent = null;
    			
            	for (int n = 0; n < mpmsOrdersInfoList.size(); n++){
            		rowId ++;
    				//设置内容
            		rowContent = new Vector();
            		/<strong> 组织订单信息 start */
            		MpmsOrdersInfo ordersI = (MpmsOrdersInfo)mpmsOrdersInfoList.get(n);
            		
            		// 取出集合数据放入数组中
            		String[] labelContent = this.getLableContent(ordersI, radioValue);
            		
        			int allColumn = rowOneLine.size();
        			
        			//遍历订单信息写入Excel中
        			int lableContentLength = labelContent.length;
            		for (int i = 0; i < lableContentLength; i++) {
            			if (i == 0) {
            				rowContent.add("" + (n+1));
            			}
            			rowContent.add(labelContent<i>);
            		}
            		//填充空格
            		for (int i = 0; i < allColumn - lableContentLength-1; i++) {
            			rowContent.add(null);
            		}
            		content.add(rowContent);
            		/</strong> 组织订单信息 end */

                	/<strong> 组织订单详细信息 start */
            		MpmsOrdersInfo orderInfo = mpmsOrderBO.getMpmsOrdersInfo(ordersI.getOrderId());
            		orderInfo.getCiUserInfo();

            		//组织订单内容列表
            		Set contentSet = orderInfo.getMpmsStockRelations();
            		List contentList = new Vector();
            		Iterator contentIt = contentSet.iterator();
            		while(contentIt.hasNext()){
            			contentList.add((MpmsStockRelation)contentIt.next());
            		}
                	
                	for (int ci = 0; ci < contentList.size(); ci++){
                		rowContent = new Vector();
                		MpmsStockRelation mpmsStockRelation=(MpmsStockRelation)contentList.get(ci);
                		//取出订单详细信息数据放入数组中
                		String[] orderInfoContent = getOrderInfoContent(mpmsStockRelation);
            			//填充空格
                		for (int j = 0; j < lableContentLength + 1; j++) {
                			rowContent.add(null);
                		}
            			//遍历订单详细信息
                    	for (int oi = 0; oi < orderInfoContent.length; oi++) {
                    		if (oi == 0) {
                				rowContent.add("" + (ci+1));
                			}
                    		rowContent.add(orderInfoContent[oi]);
                		}
                    	content.add(rowContent);
                	}
                	/</strong> 组织订单详细信息 end */