accountmanage.ejb

J2EE的一个开发实例

package music.ejb;

import java.security.Principal;
import java.util.*;
import javax.ejb.*;
import weblogic.ejb.*;

import music.ejb.db.*;
import music.shared.*;

/**
 * @ejbgen:session type="Stateless" default-transaction="Required"
 *   ejb-name = "AccountManage"
 *
 * @ejbgen:jndi-name
 *   remote="ejb/AccountManage"
 *
 * @ejbgen:file-generation remote-class = "true" remote-class-name = "AccountManageRemote" remote-home = "true" remote-home-name="AccountManageRemoteHome" local-class="true" local-class-name = "AccountManageLocal" local-home="true" local-home-name = "AccountManageLocalHome"
 */
public class AccountManage
  extends GenericSessionBean
  implements SessionBean
{
  public void ejbCreate() {
    // Your code here
  }

    /**
     * @ejbgen:remote-method
     */
    public void register(AccountVO accountVO)
        throws UserExistException, FormatException, ApplicationException
    {
        // check format:
        AccountUtil.checkAccountFormat(accountVO);

        AccountLocalHome home = JndiHelper.getAccountLocalHome();
        AccountLocal account = null;
        try {
            account = home.create(
                accountVO.getUsername(),
                accountVO.getPassword(),
                accountVO.getEmail()
            );
        }
        catch(DuplicateKeyException de) {
            throw new UserExistException("User " + accountVO.getUsername() + " already exists.");
        }
        catch(CreateException ce) {
            throw new ApplicationException("System internal error: " + ce.getMessage());
        }
    }

    /**
     * @ejbgen:remote-method
     */
    public AccountVO login(String username, String password)
        throws UnauthorizedException
    {
        if(username==null || password==null)
            throw new UnauthorizedException("Authorization failed.");
        username = username.toLowerCase();

        AccountLocal account = null;
        try {
            account = JndiHelper.getAccountLocalHome().findByPrimaryKey(username);
        }
        catch(FinderException fe) {
            throw new UnauthorizedException("User not found: " + username);
        }
        if(!account.getPassword().equals(password))
            throw new UnauthorizedException("Password not match.");
        // passed, return the account value object(ignore password)
        return new AccountVO(username, null, account.getEmail(), account.getRole());
    }

    /**
     * @ejbgen:remote-method
     */
    public void  changePassword(String username, String oldPassword, String newPassword)
        throws UnauthorizedException, FormatException
    {
        // check the new password:
        AccountUtil.checkPasswordFormat(newPassword);

        AccountLocal account = null;
        try {
            account = JndiHelper.getAccountLocalHome().findByPrimaryKey(username);
        }
        catch(FinderException fe) {
            throw new UnauthorizedException("User not found: " + username);
        }
        if(!account.getPassword().equals(oldPassword)) {
            throw new UnauthorizedException("Invalid old password.");
        }
        account.setPassword(newPassword);
    }

    /**
     * @ejbgen:remote-method
     */
    public void  update(AccountVO accountVO)
        throws UnauthorizedException
    {
        AccountLocal account = null;
        try {
            account = JndiHelper.getAccountLocalHome().findByPrimaryKey(accountVO.getUsername());
        }
        catch(FinderException fe) {
            throw new UnauthorizedException("User not found: " + accountVO.getUsername());
        }
        account.setEmail(accountVO.getEmail());
    }

}