jfinal renderJson怎么返回List<Record>

jfinal renderJson怎么返回List<Record>

List datas = SQL.query("select tabmarketindex_IndCode from typecompmi where typeComp = ?", typeComp);
List row = new ArrayList();
String [] s = new String [datas.size()];
Iterator it = datas.iterator();
int i = 0;
while(it.hasNext()){
row.add((String[])it.next());
s[i]=row.get(i)[0];
i++;
}
return s;