Jdbc联MySQL时,中文问题怎么解决呀

03-07-30 efan1

 String instr = "哈哈";
       instr = new String(instr.getBytes("unicode"),"ISO8859_1");
        String sql2 = "INSERT INTO keytable VALUES(?,2)";
        pstmt = conn.prepareStatement(sql2);
        pstmt.setString(1,instr);
        pstmt.executeUpdate();
<p>

为什么插入的全是乱码呀。