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Mar 20th, 2019
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  1. package de.robinfx.knockffa.mysql;
  2.  
  3. import java.sql.Connection;
  4. import java.sql.DriverManager;
  5. import java.sql.ResultSet;
  6. import java.sql.SQLException;
  7. import java.sql.Statement;
  8.  
  9. public class MYSQL {
  10.  
  11. private String HOST = "";
  12. private String DATABASE = "";
  13. private String USER = "";
  14. private String PASSWORD = "";
  15.  
  16. private Connection con;
  17.  
  18. public MYSQL(String host, String database, String user, String password) {
  19. this.HOST = host;
  20. this.DATABASE = database;
  21. this.USER = user;
  22. this.PASSWORD = password;
  23.  
  24. connect();
  25. }
  26.  
  27. public void connect() {
  28. try {
  29. con = DriverManager.getConnection("jdbc:mysql://" + HOST + ":3306/" + DATABASE + "?autoReconnect=true", USER, PASSWORD);
  30. System.out.println("[MySQL] Die Verbindung zur MySQL wurde hergestellt!");
  31. } catch (SQLException e) {
  32. System.out.println("[MySQL] Die Verbindung zur MySQL ist fehlgeschlagen! Fehler: " + e.getMessage());
  33. }
  34. }
  35.  
  36. public void close() {
  37. try {
  38. if(con != null) {
  39. con.close();
  40. System.out.println("[MySQL] Die Verbindung zur MySQL wurde Erfolgreich beendet!");
  41. }
  42. } catch (SQLException e) {
  43. System.out.println("[MySQL] Fehler beim beenden der Verbindung zur MySQL! Fehler: " + e.getMessage());
  44. }
  45. }
  46.  
  47. public void update(String qry) {
  48. try {
  49. Statement st = con.createStatement();
  50. st.executeUpdate(qry);
  51. st.close();
  52. } catch (SQLException e) {
  53. connect();
  54. System.err.println(e);
  55. }
  56. }
  57.  
  58. public ResultSet query(String qry) {
  59. ResultSet rs = null;
  60.  
  61. try {
  62. Statement st = con.createStatement();
  63. rs = st.executeQuery(qry);
  64. } catch (SQLException e) {
  65. connect();
  66. System.err.println(e);
  67. }
  68. return rs;
  69. }
  70. }
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