一，远程调用

@Stateless//一般定义成无状况的
@Remote
public class UserManagerBean implements UserManager {
	@Override
	public void addUser(User user) {
		System.out.println("User["+user.getUsername()+"] is saved...");
		user.setId(10);
	}
}
@Stateless//一般定义成无状况的
@Remote
public cla