DWR 实现单向聊天【三：业务层、控制层、bean】 功能登录显示登录用户【无数据库操作】
一：聊天业务类 主要业务 源代码如下：

package com.vo; public class User { private String id; //scriptSessionId private String name; private String sid; //sessionId public String getId() { return id; } public void setId(String id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; } public User(String id, String name) { super(); this.id = id; this.name = name; } public User() { super(); // TODO Auto-generated constructor stub } public String getSid() { return sid; } public void setSid(String sid) { this.sid = sid; } public User(String id, String name, String sid) { super(); this.id = id; this.name = name; this.sid = sid; } }