2.把符合要求的数据全部取出来放在ArrayList里;

3.public ArrayList taxis(int e)

{

for (int i = 0, size = list.size(); i < size; i++) {

SortShopBean ssb = (SortShopBean) list.get(i);

if (ssb.getTypeid() == e){

nlist.add(ssb);

for (int j = 0; j < size; j++) {

SortShopBean nssb = (SortShopBean) list.get(j);

if (nssb.getTypeid() == ssb.getId()) {

nlist.add(nssb);

taxis(nssb.getId());

}

}

}

}

return nlist;

}

这个是加符号的

ArrayList<SortShopBean> listb = new ArrayList<SortShopBean>();

String stra = "♂";

String strb = "┄";

public ArrayList suan(ArrayList al, int id)

{

for (int i = 0, size = al.size(); i < size; i++) {

SortShopBean tb = (SortShopBean) al.get(i);

if(tb.getTypeid()==id){

stra = strb + stra;

if(tb.getTypeid()==0)stra="♂";

tb.setType(stra+tb.getType());

listb.add(tb);

stra = strb + stra;

for(int j=i+1;j<size;j++){

SortShopBean tbb = (SortShopBean)al.get(j);

if(tbb.getTypeid()==tb.getId()){

tbb.setType(stra+tbb.getType());

listb.add(tbb);

suan(al,tbb.getId());

stra = "┄♂";

//strb = "┄";

}

}

}

}

return listb;

}

这是最基本的办法,不知道大家都怎么做的?

听说可以把数据导成xml,再用Ajax什么的更好用.不过不会 - -!刚工作4个月