The issue about the ResultSet.TYPE_SCROLL_INSENSITIVE

Question

my database is oracle ,the oracle charset is "us7ascii".and i save chinese charset in the database ,normally ,i get the data from the database ,use
Statement s =conn.createStatement();
then execute the sql, then use
new String (string.getBytes("iso-8859-1"),"gbk")
i can get the correct data.but if i use:
Statement s = conn.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE, ResultSet.CONCUR_READ_ONLY);
still use:
new String (string.getBytes("iso-8859-1"),"gbk")
convert the encode,but i can't get the correct data ,the result is "?????" ,why ?

Answer 1

rp0428 wrote:
Really? Please explain how that is possible.
The US7ASCII only uses 7 bits to represent each character so can only represent 128 characters; none of them are chinese.Perhaps the sleazy hack "new String(string.getBytes())" actually works to encode and decode characters between Unicode and 7-bit ASCII -- but I haven't got the energy to figure out how it might work. My response to this sort of question is "Configure Oracle with the right character set in the first place so you don't have to deal with it at the application level".