logonhandler.java

该系统是一个基于p2p的即时聊天系统

/*
 * @(#) LogonHandler.java
 * Copyright 2004 HWStudio. All rights reserved.
 */
package hws.item.smart.utility.admin;
//导入核心Java类库
import java.io.IOException;
import java.io.StringReader;
//导入自定义Java类库
import hws.item.smart.misc.StringShop;
import hws.item.smart.misc.PopToolkit;
import hws.item.smart.panel.function.admin.LogonPanel;
import hws.item.smart.panel.function.admin.AddressPanel;
import hws.item.smart.utility.chat.UserInfo;
//导入第三方Java类库
import org.jdom.Element;
import org.jdom.Document;
import org.jdom.JDOMException;
import org.jdom.input.SAXBuilder;
import org.jdom.output.XMLOutputter;
/**
 * 登录处理器
 *
 * @version 0.1 2005-08-07
 * @author Hwerz
 */
public class LogonHandler extends Object {
    /*------------------------------------------------------------------------*
     *                                公共方法                                *
     *------------------------------------------------------------------------*/
    /**
     * 用户登录
     *
     * @param requestMsg 用户登录的请求信息
     * @return 用户登录的响应信息
     */
    public String logon(String requestMsg) {
        String result = StringShop.LOGON_FAILURE;
        try {
            SAXBuilder builder = new SAXBuilder();
            StringReader reader = new StringReader(requestMsg);
            Document document = builder.build(reader);
            Element request = document.getRootElement();
            String id = request.getChild("ID").getText();
            UserInfo user = XMLAccessor.getUser(id);
            if (user == null) {
                result = StringShop.USER_NOT_EXIST;
            } else {
                if (AddressPanel.getInstance().isOnline(id) == true) {
                    result = StringShop.USER_IS_ONLINE;
                } else {
                    String password = request.getChild("Password").getText();
                    if (!user.getBasicInfo().getPassword().equals(password)) {
                        result = StringShop.PASSWORD_ERROR;
                    } else {
                        String nickname = user.getBasicInfo().getNickname();
                        String ip = request.getChild("IP").getText();
                        String time = PopToolkit.getLongTime();
                        AddressPanel.getInstance().online(id, nickname, ip);
                        LogonPanel.getInstance().logon(id, nickname, ip, time);
                        result = StringShop.LOGON_SUCCESS;
                    }
                }
            }
        } catch (JDOMException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        XMLOutputter outputter = new XMLOutputter();
        Element response = new Element("Response");
        Element element = new Element("Result");
        element.setText(result);
        response.addContent(element);
        return outputter.outputString(new Document(response));
    }
}