Question

我正在与一些人一起开展学校项目，需要将MySQL数据库表（spiele = games）导出到高分列表（基于GUI的grpahics）。尝试了多种变化，但不知何故代码似乎不正确。

我需要在哪里放置表格代码？如何正确修改/粘贴rowData和tablecolums？我可以通过＆＃34; ValueAt＆＃34;来填充表格行数据吗？或者这是不同的东西？

我还可以为用户名/ ID / studentID添加另一个字符串吗？我还可以将这样的数据导出为excel吗？或者这是另一回事吗？

谢谢！

   public void initHighScore() throws IOException {




            Connection conn = null;
            // Notice, do not import com.mysql.jdbc.*
            // or you will have problems!
             try {
                    // The newInstance() call is a work around for some
                    // broken Java implementations
                    Class.forName("com.mysql.jdbc.Driver").newInstance();
                } catch (Exception ex) {
                    // handle the error
                }
                        try {
                        // The newInstance() call is a work around for some
                        // broken Java implementations

                         conn=DriverManager.getConnection("jdbc:mysql://localhost:3306/sys?useSSL=false","admin","admin");
                        //conn =
                        //         DriverManager.getConnection("jdbc:mysql://localhost/sys?useSSL=false" +
                        //                                     "user=admin&password=admin");

                         if (conn!= null) {
                             System.out.println("Connection established!");

                        }

                         String query = "SELECT * FROM spiele";

                         // create the java statement
                         Statement st = conn.createStatement();

                         // execute the query, and get a java resultset
                         ResultSet rs = st.executeQuery(query);

                         // iterate through the java resultset

                        String rowData [][] = new String[][]{


                         int li_row = 0;
                            while(rs.next()){
                                table.setValueAt(rs.getDate("tag"),li_row,0);
                                table.setValueAt(rs.getString("gewinnername"),li_row,0);
                                table.setValueAt(rs.getInt("schuesse"),li_row,0);

                                Date userid = rs.getDate("tag");
                                int schuesse     = rs.getInt("schuesse");
                                String name1     = rs.getString("gewinnername");
                                //System.out.println(name1);
                                li_row++;

                            }
                        }

                        frame2 = new JFrame("High Score");
                        String columnNames[] = { "Tag", "Gewinner", "Anzahl Schüsse" };
                        //table = new JTable(   DBHighscore() );







                        table = new JTable(rowData, columnNames);
                        table.setForeground(Color.white);
                        Color background = new Color(0,0,0,0);
                        table.setOpaque(false);
                        table.setBackground(background);




            }
                         st.close();


                         } catch (SQLException ex) {
                // handle any errors
                System.out.println("SQLException: " + ex.getMessage());
                System.out.println("SQLState: " + ex.getSQLState());
                System.out.println("VendorError: " + ex.getErrorCode());
            }







            /*Object rowData [][] = {{ "    Rang    ", "    Punkte  ", "    Matrikelnummer  " },
                { "1", "", "" },{ "", "", "" },{ "", "", "" },{ "", "", "" },{ "", "", "" },{ "", "", "" } };

            */

MySQL行数据导出到Applet中的Java表？

0 个答案: