Question

for(int i = 0; i<listut.size();i+=2){
String query3="select........";
ResultSet rs3= con.createStatement().executeQuery(query3);
while(rs3.next())
{
    idserv= rs3.getString("IDservices");
    nameserv= rs3.getString("Name");
    autorizzato = rs3.getString("Autorizzato");
    listab.add(idserv);
    listab.add(nameserv);
    listab.add(autorizzato);
}}

我对arraylist的输出有问题，结果重复了，在arraylist listut中，我每个元素都有3个元素。第一个元素：

[1, getStructureAgent, 1, 2, searchStructureAgent, 0, 3, getZona, 0, 4, getFido, 0, 5, getCostruttore, 0, 6, searchAgent, 0, 7, getPayment, 0, 8, searchGruppo, 0, 9, getArticolo, 0, 10, searchPayment, 0, 11, searchZona, 0, 12, getGruppo, 0, 13, getCustomers, 0, 14, searchArticolo, 0, 15, getSottoGruppo, 0, 16, getAgent, 0, 17, getCustomer, 0, 18, searchCondizioniBancarieClienteOasi, 0, 19, getArboAnagrafica, 0, 20, getFidoClienteOasi, 0, 21, searchSottoGruppo, 0, 22, searchCostruttore, 0]

第二个元素

[1, getStructureAgent, 1, 2, searchStructureAgent, 0, 3, getZona, 0, 4, getFido, 0, 5, getCostruttore, 0, 6, searchAgent, 0, 7, getPayment, 0, 8, searchGruppo, 0, 9, getArticolo, 0, 10, searchPayment, 0, 11, searchZona, 0, 12, getGruppo, 0, 13, getCustomers, 0, 14, searchArticolo, 0, 15, getSottoGruppo, 0, 16, getAgent, 0, 17, getCustomer, 0, 18, searchCondizioniBancarieClienteOasi, 0, 19, getArboAnagrafica, 0, 20, getFidoClienteOasi, 0, 21, searchSottoGruppo, 0, 22, searchCostruttore, 0, 1, getStructureAgent, 1, 2, searchStructureAgent, 0, 3, getZona, 0, 4, getFido, 0, 5, getCostruttore, 0, 6, searchAgent, 0, 7, getPayment, 0, 8, searchGruppo, 0, 9, getArticolo, 0, 10, searchPayment, 0, 11, searchZona, 0, 12, getGruppo, 0, 13, getCustomers, 0, 14, searchArticolo, 0, 15, getSottoGruppo, 0, 16, getAgent, 0, 17, getCustomer, 0, 18, searchCondizioniBancarieClienteOasi, 0, 19, getArboAnagrafica, 0, 20, getFidoClienteOasi, 0, 21, searchSottoGruppo, 0, 22, searchCostruttore, 0]

在第二个cicle中，数组包含第一个cicle的结果

Answer 1

如果您希望listab将for循环的每个迭代开始为空，则需要在该循环的主体顶部使其为空。

错误的arraylist输出，在2个cicle中有重复结果

1 个答案: