standardprotectionpolicy.java

非常有用的操作pdf文件的java源码

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package org.pdfbox.pdmodel.encryption;

/**
 * This class represents the protection policy to add to a document
 * for password-based protection.
 * 
 * The following example shows how to protect a PDF document with password. 
 * In this example, the document will be protected so that someone opening
 * the document with the user password <code>user_pwd</code> will not be
 * able to modify the document.
 * 
 * <pre>
 * AccessPermission ap = new AccessPermission();
 * ap.setCanModify(false);
 * StandardProtectionPolicy policy = new StandardProtectionPolicy(owner_pwd, user_pwd, ap);
 * doc.protect(policy);    
 * </pre>
 * 
 * @author Benoit Guillon ([e-mail])
 * @version $Revision: 1.3 $
 */
public class StandardProtectionPolicy extends ProtectionPolicy 
{
    
    private AccessPermission permissions;
    
    private String ownerPassword = "";
    
    private String userPassword = "";
    
    
    /**
     * Creates an new instance of the standard protection policy 
     * in order to protect a PDF document with passwords.
     * 
     * @param ownerPass The owner's password.
     * @param userPass The users's password.
     * @param perms The access permissions given to the user. 
     */
    public StandardProtectionPolicy(String ownerPass, String userPass, AccessPermission perms)
    {
        this.permissions = perms;
        this.userPassword = userPass;
        this.ownerPassword = ownerPass;        
    }
    
    /**
     * Getter of the property <tt>permissions</tt>.
     * 
     * @return Returns the permissions.
     */
    public AccessPermission getPermissions() 
    {
        return permissions;
    }
    
    /**
     * Setter of the property <tt>permissions</tt>.
     * 
     * @param perms The permissions to set.
     */
    public void setPermissions(AccessPermission perms) 
    {
        this.permissions = perms;
    }
    
    /**
     * Getter of the property <tt>ownerPassword</tt>.
     * 
     * @return Returns the ownerPassword.
     */
    public String getOwnerPassword() 
    {
        return ownerPassword;
    }
    
    /**
     * Setter of the property <tt>ownerPassword</tt>.
     * 
     * @param ownerPass The ownerPassword to set.
     */
    public void setOwnerPassword(String ownerPass) 
    {
        this.ownerPassword = ownerPass;
    }
    
    /**
     * Getter of the property <tt>userPassword</tt>.
     * 
     * @return Returns the userPassword.
     */
    public String getUserPassword() 
    {
        return userPassword;
    }
    
    /**
     * Setter of the property <tt>userPassword</tt>.
     * 
     * @param userPass The userPassword to set.
     */
    public void setUserPassword(String userPass) 
    {
        this.userPassword = userPass;
    }
}