无法从数据库循环读出下一条记录
如题,只能读出一条记录,代码如下:

public   synchronized   ArrayList   getOkFile(String   SEQUENCE)   {
       
String   sql   =   "SELECT     T_SIG_INFO.FLOW_ID   AS   ID   FROM   T_SIG_PROCESS,T_SIG_INFO   where   T_SIG_PROCESS.FLOW_ID=T_SIG_INFO.FLOW_ID   AND   T_SIG_INFO.SIGNOK_NUM=T_SIG_INFO.SIG_NUM   AND   T_SIG_PROCESS.SEQUENCE= ' "
+SEQUENCE+ " 'AND   T_SIG_PROCESS.IS_ACCEPT= '0 ' ";
ResultSet   rs1=null;
ResultSet   rs2=null;
ArrayList   alRet   =   new   ArrayList();
String   FLOW_ID;
try   {
openConnection();
openStatement();
rs1   =   query(sql);
if(rs1   !=   null){
while(rs1.next()){//问题所在:此处循环只能一次
FLOW_ID=rs1.getString( "ID ");  
Sig_InfoModel   m   =   new   Sig_InfoModel();

sql   =   "SELECT   BUILDER,FILE_NAME,TO_CHAR(SIG_BEGIN, 'yyyy-mm-dd   hh24:mi ')   AS   SIG_BEGIN   FROM   T_SIG_INFO   where   FLOW_ID= ' "+FLOW_ID+ " ' ";
try   {
rs2   =   query(sql);
if   (rs2   !=   null)   {
if(rs2.next())   {
m.setFlow_builder(rs2.getString( "BUILDER "));
m.setFile_name(rs2.getString( "FILE_NAME "));
m.setSig_begin(rs2.getString( "SIG_BEGIN "));
m.setFlow_id(FLOW_ID);
alRet.add(m);
}
}
}   catch   (Exception   ex)   {
ex.printStackTrace();
return   null;
}
}
return   alRet;
}
}   catch   (Exception   ex)   {
ex.printStackTrace();
return   null;
}

finally   {
try   {
if   (rs2!=   null)
rs2.close();
if   (rs1!=   null)
rs1.close();
}   catch   (SQLException   ig)   {
}
closeStatement();
closeConnection();
}
return   null;


}
}

------解决方案--------------------
你这样是不行的。
你打开了两次resultset。这是不允许的。
调用rs2 = query(sql)时就把rs1给close了。
再从rs1里取数据时就取不到了