go4it

解決：http://www.aygfsteel.com/Bobbyliao/archive/2008/10/01/232018.html

  后來發(fā)現(xiàn)，原來是UserManagerBean中的@Local,@Remote必須明確寫上接口的類型，才可以。修改代碼如下：

package cn.study.ejb;

import javax.ejb.Local;
import javax.ejb.Remote;
import javax.ejb.Stateless;

@Stateless
@Remote(UserManager.class)
@Local(UserManager.class)
public class UserManagerBean implements UserManager {

public void addUser(User user) {
        System.out.println(user.getUsername() + "已經(jīng)被成功保存！");
        user.setId(13);
    }

}