login

chenhuan

2024-05-16 f992b4e508b358eba4170b1e9b1bb21319f7a3cd

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
package com.javaweb.framework.shiro.web.filter.online;
 
import java.io.IOException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import org.apache.shiro.session.Session;
import org.apache.shiro.subject.Subject;
import org.apache.shiro.web.filter.AccessControlFilter;
import org.apache.shiro.web.util.WebUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import com.javaweb.common.constant.ShiroConstants;
import com.javaweb.common.enums.OnlineStatus;
import com.javaweb.framework.shiro.session.OnlineSession;
import com.javaweb.framework.shiro.session.OnlineSessionDAO;
import com.javaweb.framework.util.ShiroUtils;
import com.javaweb.system.domain.SysUser;
 
/**
 * 自定义访问控制
 * 
 * @author ruoyi
 */
public class OnlineSessionFilter extends AccessControlFilter
{
    /**
     * 强制退出后重定向的地址
     */
    @Value("${shiro.user.loginUrl}")
    private String loginUrl;
 
    @Autowired
    private OnlineSessionDAO onlineSessionDAO;
 
    /**
     * 表示是否允许访问；mappedValue就是[urls]配置中拦截器参数部分，如果允许访问返回true，否则false；
     */
    @Override
    protected boolean isAccessAllowed(ServletRequest request, ServletResponse response, Object mappedValue)
            throws Exception
    {
        Subject subject = getSubject(request, response);
        if (subject == null || subject.getSession() == null)
        {
            return true;
        }
        Session session = onlineSessionDAO.readSession(subject.getSession().getId());
        if (session != null && session instanceof OnlineSession)
        {
            OnlineSession onlineSession = (OnlineSession) session;
            request.setAttribute(ShiroConstants.ONLINE_SESSION, onlineSession);
            // 把user对象设置进去
            boolean isGuest = onlineSession.getUserId() == null || onlineSession.getUserId() == 0L;
            if (isGuest == true)
            {
                SysUser user = ShiroUtils.getSysUser();
                if (user != null)
                {
                    onlineSession.setUserId(user.getUserId());
                    onlineSession.setLoginName(user.getLoginName());
                    onlineSession.setAvatar(user.getAvatar());
                    onlineSession.setDeptName(user.getDept().getDeptName());
                    onlineSession.markAttributeChanged();
                }
            }
 
            if (onlineSession.getStatus() == OnlineStatus.off_line)
            {
                return false;
            }
        }
        return true;
    }
 
    /**
     * 表示当访问拒绝时是否已经处理了；如果返回true表示需要继续处理；如果返回false表示该拦截器实例已经处理了，将直接返回即可。
     */
    @Override
    protected boolean onAccessDenied(ServletRequest request, ServletResponse response) throws Exception
    {
        Subject subject = getSubject(request, response);
        if (subject != null)
        {
            subject.logout();
        }
        saveRequestAndRedirectToLogin(request, response);
        return false;
    }
 
    // 跳转到登录页
    @Override
    protected void redirectToLogin(ServletRequest request, ServletResponse response) throws IOException
    {
        WebUtils.issueRedirect(request, response, loginUrl);
    }
}