登录保存用户信息

做项目时，可能会将某些信息保存在session中，如登录等信息，这样方便在某些页面使用这些保存的信息。

要想保存这些信息，需要创建一个类，该类里面定义需要保存的变量等信息，当登录后就通过new一个该类来保存登录等信息，然后放在session中，需要用到这些信息时直接用例如EL表达式等取出来就OK了。例子如下：

1.保存用户信息的类

<span style="font-size:14px;"><span style="font-family:Microsoft YaHei;">public class WSessionInfo implements java.io.Serializable {<span style="white-space:pre">    </span>

    private String id;// 用户ID
    private String loginname;// 登录名
    private String name;// 姓名
    private String ip;// 用户IP
    private String userimg; //图片
    private RegisterUser user;  //用户注册信息
    private String usertype;//用户类型
    private String chengsid;//城市编号
    private String cityname;//城市名
    private List<String> resourceList;// 用户可以访问的资源地址列表
    private List<String> resourceAllList;

    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }
    public String getChengsid() {
        return chengsid;
    }

    public void setChengsid(String chengsid) {
        this.chengsid = chengsid;
    }
<span style="white-space:pre">    </span>......
}</span>

</span>

<span style="font-size:14px;"><span style="font-family:Microsoft YaHei;">public class WSessionInfo implements java.io.Serializable {<span style="white-space:pre"> </span>

    private String id;// 用户ID
    private String loginname;// 登录名
    private String name;// 姓名
    private String ip;// 用户IP
    private String userimg; //图片
    private RegisterUser user;  //用户注册信息    
    private String usertype;//用户类型
    private String chengsid;//城市编号
    private String cityname;//城市名
    private List<String> resourceList;// 用户可以访问的资源地址列表
    private List<String> resourceAllList;
    
    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }
    public String getChengsid() {
        return chengsid;
    }

    public void setChengsid(String chengsid) {
        this.chengsid = chengsid;
    }
<span style="white-space:pre">    </span>......
}</span>

</span>

2.在Controller中保存登录等信息

<span style="font-size:14px;"><span style="font-family:Microsoft YaHei;"><span style="white-space:pre">   </span>@RequestMapping("/login")
    @ResponseBody
    public Json login(Account user, HttpSession session) {
        ......
        WSessionInfo sessionInfo = new WSessionInfo();//保存用户信息的类
        sessionInfo.setId(loginUser.getId());//为类里面的属性赋值，即把登录信息保存在这个类中
        sessionInfo.setLoginname(loginUser.getLoginname());
        sessionInfo.setUsertype(loginUser.getUsertype());
        sessionInfo.setUser(regUser);
        session.setAttribute(GlobalConstant.SESSION_WAP_INFO, sessionInfo);//将信息保存在session中
    }
</span></span>

<span style="font-size:14px;"><span style="font-family:Microsoft YaHei;"><span style="white-space:pre">  </span>@RequestMapping("/login")
    @ResponseBody
    public Json login(Account user, HttpSession session) {
        ......
        WSessionInfo sessionInfo = new WSessionInfo();//保存用户信息的类
        sessionInfo.setId(loginUser.getId());//为类里面的属性赋值，即把登录信息保存在这个类中
        sessionInfo.setLoginname(loginUser.getLoginname());
        sessionInfo.setUsertype(loginUser.getUsertype());
        sessionInfo.setUser(regUser);
        session.setAttribute(GlobalConstant.SESSION_WAP_INFO, sessionInfo);//将信息保存在session中 
    }
</span></span>

3.在页面使用

<span style="font-size:14px;"><span style="font-family:Microsoft YaHei;"><%@page import="com.wxm.framework.constant.GlobalConstant"%>
<%@page import="com.wxm.pageModel.base.WSessionInfo"%>
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<c:set var="ctx" value="${pageContext.request.contextPath}"/>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";

<span style="white-space:pre">    </span><strong>WSessionInfo sessionInfo = (WSessionInfo) request.getSession().getAttribute(GlobalConstant.SESSION_WAP_INFO);//获取保存的登录等信息</strong>

    if(sessionInfo!=null){//判断保存的信息是否为空，即判断用户是否登录
        response.sendRedirect("/bd/wap/ar.jsp");//如果用户登录后就跳转到某个页面
}
%>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<base href="<%=basePath%>">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<meta charset="utf-8">
<title>登录</title>
<meta name="viewport" content="initial-scale=1, maximum-scale=1, user-scalable=no">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black">
</head>

<body>
</body>
</html>
</span></span>

<span style="font-size:14px;"><span style="font-family:Microsoft YaHei;"><%@page import="com.wxm.framework.constant.GlobalConstant"%>
<%@page import="com.wxm.pageModel.base.WSessionInfo"%>
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<c:set var="ctx" value="${pageContext.request.contextPath}"/>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";

<span style="white-space:pre">    </span><strong>WSessionInfo sessionInfo = (WSessionInfo) request.getSession().getAttribute(GlobalConstant.SESSION_WAP_INFO);//获取保存的登录等信息</strong>
                
    if(sessionInfo!=null){//判断保存的信息是否为空，即判断用户是否登录
        response.sendRedirect("/bd/wap/ar.jsp");//如果用户登录后就跳转到某个页面
}
%>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<base href="<%=basePath%>">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<meta charset="utf-8">
<title>登录</title>
<meta name="viewport" content="initial-scale=1, maximum-scale=1, user-scalable=no">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black">
</head>

<body>
</body>
</html>
</span></span>

4.退出session

<span style="font-family:Microsoft YaHei;"><span style="white-space:pre">   </span>@RequestMapping("/logout")
    @ResponseBody
    public Json logout(HttpSession session) {
<span style="white-space:pre">        </span>Json j = new Json();//这个类是保存成功或失败的信息
        if (session != null) {
            session.invalidate();//调用session的invalidate()方法，将保存的session删除
        }
        j.setSuccess(true);
        j.setMsg("退出登录成功！");
        return j;
<span style="white-space:pre">    </span>}</span>

<span style="font-family:Microsoft YaHei;"><span style="white-space:pre">   </span>@RequestMapping("/logout")
    @ResponseBody
    public Json logout(HttpSession session) {
<span style="white-space:pre">        </span>Json j = new Json();//这个类是保存成功或失败的信息
        if (session != null) {
            session.invalidate();//调用session的invalidate()方法，将保存的session删除
        }
        j.setSuccess(true);
        j.setMsg("退出登录成功！");
        return j;
<span style="white-space:pre">    </span>}</span>