userservice.java

关于Ajax的

package allan.ajax.service;

import allan.ajax.entity.User;

public class UserService {
    public boolean isUserNameInUser(String userName) throws Exception {
        if("root".equals(userName))
            return true;
        return false;
    }

    public void add(User user) throws Exception {
        if(user.getUserName().equals("tom"))
            throw new Exception();
    }
}