帮帮忙，搞了很久，没排出来。。
List list=new ArrayList();
HashMap rs=new HashMap();
rs.put( "id ", new Integer(1));
rs.put( "name ", "福建 ");
rs.put( "parent_id ", new Integer(0));
list.add(rs);
rs=new HashMap();
rs.put( "id ", new Integer(2));
rs.put( "name ", "浙江 ");
rs.put( "parent_id ", new Integer(0));
list.add(rs);
rs=new HashMap();
rs.put( "id ", new Integer(3));
rs.put( "name ", "福州 ");
rs.put( "parent_id ", new Integer(1));
list.add(rs);
rs=new HashMap();
rs.put( "id ", new Integer(4));
rs.put( "name ", "厦门 ");
rs.put( "parent_id ", new Integer(1));
list.add(rs);
rs=new HashMap();
rs.put( "id ", new Integer(5));
rs.put( "name ", "鼓楼区 ");
rs.put( "parent_id ", new Integer(3));
list.add(rs);
rs=new HashMap();
rs.put( "id ", new Integer(6));
rs.put( "name ", "台江区 ");
rs.put( "parent_id ", new Integer(3));
list.add(rs);
System.out.println(list);
想把这个list输出后成string,组合成一个下拉框。string内容为 <option value=id> name </option>
可能有很多级。。。。。。。。。。。这是一个地区表
[解决办法]
for(int i=0;i <list.size();i++){
rs = (HashMap)list.get(i);
sb.append( " <option value= ' ");
sb.append(rs.get( "id "));
sb.append( " '> ");
sb.append(rs.get( "name "));
sb.append( " </option> ");
sb.append( "\n ");
}
System.out.println(sb.toString());
