如何解决JAVA中权限问题(在线等待)

Question

如果不想用数字签名,可以暴力修改权限.注意测试后再改回来啦!!:文件:{你的java.home}/lib/security/java.policy添加:
grant codeBase "file:${java.home}/lib/*" {
permission java.security.AllPermission;
};//给lib目录下的类开所有权限

Answer 1

谢谢上面那位大哥,,
你的那个方法我试过了,,我用的是policytool工具,可是没有用,
有没有其它的方法,
或用数字签名,如何实现,
要代码吗?

Answer 2

在.java.policy 中的设置已经如上所述了,我有一本Wrox的,java专业编程指南,
上面所用的方法不明确,能指明一条路吗,?
万分感激

Answer 3

import java.awt.*;//这是我的代码,主要的button 我都重新开发过,所以,,,,不好意思
import java.awt.event.*;
import javax.swing.*;
public class Bbb extends JApplet
//JFrame 
{
public void init()
{ 
//super("JLayeredPane"); 
//setResizable(false);
//setLookAndFeel("com.sun.java.swing.plaf.window.WindowsLookAndFeel");

try
{
UIManager.setLookAndFeel("com.sun.java.swing.plaf.window.WindowsLookAndFeel");
 
}
catch(Exception e)
{
}
ImageIcon one=new ImageIcon(".\\icon\\ld.gif");
//setIconImage(one.getImage());     
            
             setPosition();
        }
        
        public void setPosition()
    {
    JLayeredPane one=new JLayeredPane();
    getContentPane().add(one);
   
          Point position = new Point(0,0);
             JLabel jl=new JLabel(new ImageIcon(".\\icon\\lognnew.jpg"),JLabel.CENTER);
             jl.setOpaque(true);
             jl.setBounds(position.x,position.y,786,561);
             one.add(jl,JLayeredPane.DEFAULT_LAYER);
            
             position.x=570;
             position.y=195;
             JPasswordField jtf=new JPasswordField(10);
             jtf.setOpaque(true);
             jtf.setBounds(position.x,position.y,100,25);
             one.add(jtf,JLayeredPane.DRAG_LAYER);
            
             position.x=710;
             position.y=210;
             //position.y=position.y+200;
             JButton jb1=new JButton(new ImageIcon(".\\icon\\open.jpg"));
             jb1.addActionListener(new ActionListener()
             {
             public void actionPerformed(ActionEvent e)
             {
            
             //new User(jtf.getText(),jtf2.getText());
             new User();
             //dispose();
             }
             });
            
             jb1.setOpaque(true);
             jb1.setBounds(position.x,position.y,32,32);
             one.add(jb1,JLayeredPane.DRAG_LAYER);
            
             position.x=570;
             position.y=151;            
             JTextField jtf2=new JTextField(10);
             //jcb.setOpaque(true);
             jtf2.setBounds(position.x,position.y,100,25);
             one.add(jtf2,JLayeredPane.DRAG_LAYER);
            
             position.x=60;
             position.y=505;
             //position.y=position.y+200;
             JButton jb2=new JButton(new ImageIcon(".\\icon\\close.jpg"));
             jb2.setOpaque(true);
             jb2.setBounds(position.x,position.y,32,32);
             one.add(jb2,JLayeredPane.DRAG_LAYER);
             jb2.addActionListener(new ActionListener()
             {
             public void actionPerformed(ActionEvent e)
             {
             System.exit(0);
             }
             });
                      
            
             setSize(790,580);
             setVisible(true);
        }
        /*public static void main(String args[])
        {
         new Bbb();
        }*/
        

}