애플릿 textfield에서 mysql 데이터베이스에 데이터를 삽입하십시오 - 오류

Question

애플릿 페이지를 사용하여 mysql 데이터베이스에 데이터를 추가하려고합니다. 내 생각은 텍스트 필드를 채우고 나서 저장 버튼을 누르면 모든 텍스트가 mySQL 데이터베이스에 추가됩니다. 하지만 오류가 있습니다.

Access Denied: java.security.AccessControlException:access denied 
    (java.io.FilePermision "\C:\Program Files(x86)\MySQL\mysql-connector-java-5.1.30\mysql-connector-java-5.1.30-bin.jar‌​" "read") 

미리 감사드립니다. 여기에 내 코드입니다 :. ((

import java.awt.*; 
import java.applet.*; 
import java.awt.event.*; 
import javax.swing.*; 
import javax.swing.SwingUtilities; 
import javax.swing.JApplet; 
import java.sql.*; 
import java.net.*; 



public class AddBook extends JApplet 
{ 
    JButton btnSave, btnCancel; 
    JLabel lblIsbn, lblTitle, lblCategory, lblAuthor, lblYPublish, lblPublisher, lblCopies, lblYear, lblMsg1; 
    JTextField txtTitle, txtCategory; 
    JTextField txtIsbn, txtAuthor, txtPublisher, txtCopies, txtYear; 

    String ttitle, tauthor, tpublisher, tcategory, tisbn, tyear, tqty; 

    public void init() 
    { 
     Font fonttxt = new Font("Calibri", Font.PLAIN, 16); 
     Font fontlbl = new Font("Calibri",Font.BOLD, 14); 
     Font fontbtn = new Font("Calibri",Font.BOLD, 16); 
     Font fontTitle = new Font("Arial ",Font.BOLD,30); 

     setLayout(null); 
     setSize(410, 400); 

     setBackground(Color.gray); 

     btnSave = new JButton("Save"); 
     btnSave.setFont(fontbtn); 
     btnCancel = new JButton("Cancel"); 
     btnCancel.setFont(fontbtn); 

     lblMsg1 = new JLabel ("ADD BOOK"); 
     lblMsg1.setFont(fontbtn); 
     lblIsbn = new JLabel("ISBN :"); 
     lblIsbn.setFont(fontlbl); 
     lblTitle = new JLabel ("Title :"); 
     lblTitle.setFont(fontlbl); 
     lblCategory = new JLabel ("Category :"); 
     lblCategory.setFont(fontlbl); 
     lblAuthor = new JLabel ("Author :"); 
     lblAuthor.setFont(fontlbl); 
     lblYear = new JLabel ("Year Published :"); 
     lblYear.setFont(fontlbl); 
     lblPublisher = new JLabel ("Publisher :"); 
     lblPublisher.setFont(fontlbl); 
     lblCopies = new JLabel ("Number of Copies :"); 
     lblCopies.setFont(fontlbl); 

     JTextField txtIsbn = new JTextField ("",100); 
     txtIsbn.setFont(fonttxt); 
     JTextField txtTitle = new JTextField ("",100); 
     txtTitle.setFont(fonttxt); 
     JTextField txtCategory = new JTextField ("",100); 
     txtCategory.setFont(fonttxt); 
     JTextField txtAuthor = new JTextField ("",100); 
     txtAuthor.setFont(fonttxt); 
     JTextField txtPublisher = new JTextField ("",100); 
     txtPublisher.setFont(fonttxt); 
     JTextField txtCopies = new JTextField ("",100); 
     txtCopies.setFont(fonttxt); 
     JTextField txtYear = new JTextField ("",100); 
     txtYear.setFont(fonttxt); 

     lblMsg1.setBounds(10,10,200,40); 
     lblIsbn.setBounds(10,50,250,30); 
     txtIsbn.setBounds(130,50,250,30); 
     lblTitle.setBounds(10,90,250,30); 
     txtTitle.setBounds(130,90,250,30); 
     lblCategory.setBounds(10,130,250,30); 
     txtCategory.setBounds(130,130,250,30); 
     lblAuthor.setBounds(10,165,250,30); 
     txtAuthor.setBounds(130,165,250,30); 
     lblPublisher.setBounds(10,200,250,30); 
     txtPublisher.setBounds(130,200,250,30); 
     lblCopies.setBounds(10,240,250,30); 
     txtCopies.setBounds(130,240,250,30); 
     lblYear.setBounds(10,280,250,30); 
     txtYear.setBounds(130,280,250,30); 
     btnSave.setBounds(40,320,150,35); 
     btnCancel.setBounds(200,320,150,35); 

     add(lblMsg1); 
     add(txtIsbn); 
     add(txtTitle); 
     add(txtCategory); 
     add(txtAuthor); 
     add(txtPublisher); 
     add(txtCopies); 
     add(txtYear); 
     add(lblIsbn); 
     add(lblTitle); 
     add(lblCategory); 
     add(lblAuthor); 
     add(lblPublisher); 
     add(lblCopies); 
     add(lblYear); 

     add(btnSave); 
     add(btnCancel); 



     tisbn = txtIsbn.getText(); 
     tyear = txtYear.getText(); 
     tqty = txtCopies.getText(); 
     ttitle = txtTitle.getText(); 
     tauthor = txtAuthor.getText(); 
     tcategory = txtCategory.getText(); 
     tpublisher = txtPublisher.getText(); 

     btnSave.addActionListener(new ActionListener() 
     { 
      public void actionPerformed(ActionEvent ae) 
      { 

       //Connection con = null; 
       //Statement st = null; 1 
       PreparedStatement pstmt; 
       Connection con; 

       if(ae.getSource() == btnSave) 
       { 


        try { 

         Class.forName("com.mysql.jdbc.Driver"); 
         con = DriverManager.getConnection("jdbc:mysql://localhost/library_system", "root", "password"); 

         con.setAutoCommit(false); 


         pstmt = con.prepareStatement ("INSERT INTO book_records VALUES (?, ?, ?, ?, ?, ?, ?)"); 

         pstmt.setString(1, tisbn); 
         pstmt.setString(2, ttitle); 
         pstmt.setString(3, tauthor); 
         pstmt.setString (4, tyear); 
         pstmt.setString(5, tpublisher); 
         pstmt.setString(6, tcategory); 
         pstmt.setString(7, tqty); 

         pstmt.executeUpdate(); 

         con.commit(); 
         pstmt.close(); 

        } 
        catch(Exception err) 
        { 
         JOptionPane.showMessageDialog(null, "Access Denied: "+err); 
        } 
       } 

       } 
      } 
     }); 
    } 
} 

Answer 1

당신은 당신이 포트를 누락 생각

Class.forName("com.mysql.jdbc.Driver"); 
Connection conn = null; 
conn = DriverManager.getConnection("jdbc:mysql://hostname:port/dbname","username", "password"); 

으로 MySQL의 연결을 시도하십시오 수있는 오류가 단순히 말한다

Answer 2

에서 문제를 "액세스가 거부되었습니다" Java 프로그램이 MySQL jar가 존재하는 디렉토리로 이동 Java 응용 프로그램의 다른 디렉토리에 jar 파일을 링크 (참조)해서는 안됩니다.

p 문제는 응용 프로그램의 클래스 경로에 필요한 mysql-connector-java-5.1.30-bin.jar‌​을 추가하여 간단하게 해결할 수 있습니다.