4.Struts的<action input=""></action>:业务逻辑层

package com.bjpowernode.struts;

public class UserManager {

public void login(String username, String password) {
if (!"admin".equals(username)) {
throw new UserNotFoundException();
}

if (!"admin".equals(password)) {
throw new PasswordErrorException();
}

}
}

package com.bjpowernode.struts;

public class UserNotFoundException extends RuntimeException {

public UserNotFoundException() {
// TODO Auto-generated constructor stub
}

public UserNotFoundException(String message) {
super(message);
// TODO Auto-generated constructor stub
}

public UserNotFoundException(Throwable cause) {
super(cause);
// TODO Auto-generated constructor stub
}

public UserNotFoundException(String message, Throwable cause) {
super(message, cause);
// TODO Auto-generated constructor stub
}

}

package com.bjpowernode.struts;

public class PasswordErrorException extends RuntimeException {

public PasswordErrorException() {
// TODO Auto-generated constructor stub
}

public PasswordErrorException(String message) {
super(message);
// TODO Auto-generated constructor stub
}

public PasswordErrorException(Throwable cause) {
super(cause);
// TODO Auto-generated constructor stub
}

public PasswordErrorException(String message, Throwable cause) {
super(message, cause);
// TODO Auto-generated constructor stub
}

}