Question

resultSet有值，但while(rs.next)确进不去。郁闷中。

用jdbc 查询结果集resultSet有值，但用. next()返回的确是false,按理说，返回的true的，小弟没见过这种情况，请高手们指点一下，谢谢各位了。
ResultSet chkRs = null;
String version = "";
hmissue = service.getData("chk_mistake_result", TABLEOWNER,
dataExport.getVersions());
if (hmissue != null) {
String columns = (String) hmissue.get("column");
chkRs = (ResultSet) hmissue.get("ResultSet");
filegen(chkRs, "chk_mistake_result", columns, path2);
}
while (chkRs.next()) {
String tempVersion = chkRs.getString("version");
if (chkRs.isFirst()) {
version = tempVersion;
}
else {
version += "," + "'" + tempVersion + "'";
}
}

hmissue是从DAO传出来的一个hashMap值.按常理说是没有问题的呀，想不明白

Answer 1

请仔细检查sql语句，并且把代码公布出来吧

Answer 2

while (chkRs.next())

应该是
while (chkRs.hasNext())

Answer 3

完整代码贴出来下