Jsp使用ArrayList的问题？

Question

                    if (sqlRst != null)
                      {
                      int i = 0;
                       while (sqlRst.next()){
                        String[] sList = new String[2];//放到这里,
                       product_kind=sqlRst.getString ("product_kind");
                       product_kind_name=sqlRst.getString ("product_kind_name");
                       sList[0]=product_kind;
                       sList[1]=product_kind_name;
                       out.print(sList[0]+sList[1]);//可以打印所有记录
                       list.add(sList);
                   
                        }
                       }
                     
                   String[] temp = new String[2];                  for (int i = 0; i < list.size(); i++) 
                  {
                    temp = (String[])list.get(i);
                    out.print(temp[0]+temp[1]);//只能打印最后一条记录
                  }你以前放的都是一个对象，在每次循环的时候要重新定义一个对象。

Answer 1

你在循环里不停的改变sList的值,当然最后只能打印最后一条记录,前面应该 这样写.
String[] sList = null;
                    if (sqlRst != null)
                      {
                      int i = 0;
                       while (sqlRst.next()){
                       sList = new String[2];
                       product_kind=sqlRst.getString ("product_kind");
                       product_kind_name=sqlRst.getString ("product_kind_name");
                       sList[0]=product_kind;
                       sList[1]=product_kind_name;
                       out.print(sList[0]+sList[1]);//可以打印所有记录
                       list.add(sList);
                   
                        }
                       }