com.microsoft.sqlserver.jdbc.SQLServerException: 结果集没有当前行。
at com.microsoft.sqlserver.jdbc.SQLServerException.makeFromDriverError(SQLServerException.java:171)
at com.microsoft.sqlserver.jdbc.SQLServerResultSet.verifyResultSetHasCurrentRow(SQLServerResultSet.java:456)
at com.microsoft.sqlserver.jdbc.SQLServerResultSet.getterGetColumn(SQLServerResultSet.java:1946)
at com.microsoft.sqlserver.jdbc.SQLServerResultSet.getValue(SQLServerResultSet.java:1981)
at com.microsoft.sqlserver.jdbc.SQLServerResultSet.getValue(SQLServerResultSet.java:1966)
at com.microsoft.sqlserver.jdbc.SQLServerResultSet.getString(SQLServerResultSet.java:2291)
at dbtest.db.main(db.java:32)