首先需要导jar包！

配置你自己的web.xml

CharacterEncodingFilter org.springframework.web.filter.CharacterEncodingFilter encoding utf-8 forceEncoding true CharacterEncodingFilter /* shiroFilter org.springframework.web.filter.DelegatingFilterProxy targetFilterLifecycle true targetBeanName shiroFilter shiroFilter /* DispatcherServlet org.springframework.web.servlet.DispatcherServlet contextConfigLocation classpath:springmvc.xml 1 DispatcherServlet / org.springframework.web.context.ContextLoaderListener contextConfigLocation classpath:spring.xml

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接下来创建一个spring-shiro.xml，我是自己这样写的，你们写的啥自己看看

<?xml version="1.0" encoding="UTF-8"?> /user/toLogin** = anon

<aop:config proxy-target-class=“true” ></aop:config>

redirect:/user/toNopermission

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对了，你们springmvc.xml中还需要添加一段配置，如下：

 

我自己定义的realm类叫userRealm

package com.youzhong.realm;

import com.youzhong.dao.UserMapper;
import com.youzhong.entity.User;
import com.youzhong.entity.UserExample;
import org.apache.shiro.authc.AuthenticationException;
import org.apache.shiro.authc.AuthenticationInfo;
import org.apache.shiro.authc.AuthenticationToken;
import org.apache.shiro.authc.SimpleAuthenticationInfo;
import org.apache.shiro.authz.AuthorizationInfo;
import org.apache.shiro.authz.SimpleAuthorizationInfo;
import org.apache.shiro.realm.AuthorizingRealm;
import org.apache.shiro.subject.PrincipalCollection;
import org.springframework.beans.factory.annotation.Autowired;

import java.util.ArrayList;
import java.util.List;

public class UserRealm extends AuthorizingRealm {

@Autowired
public UserMapper userMapper;


@Override
public String getName() {
  return "UserRealm";
}

@Override
protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principalCollection) {
  User user = (User) principalCollection.getPrimaryPrincipal();

   ArrayList<String> permissions = new ArrayList<>();

   if(user.getStatus().equals("admin")){
    permissions.add("*:*");
   }else if(user.getStatus().equals("error")){
     permissions.add("*:select");
   }else if(user.getStatus().equals("ok")){
     permissions.add("*:edit");
   }
  SimpleAuthorizationInfo info = new SimpleAuthorizationInfo();
   info.addStringPermissions(permissions);

  return info;
}

@Override
protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken authenticationToken) throws AuthenticationException {
  String username = (String) authenticationToken.getPrincipal();
  UserExample userExample = new UserExample();
  userExample.createCriteria().andUsernameEqualTo(username);
  List<User> users = userMapper.selectByExample(userExample);
  if(users.size()>0 ){
     return new SimpleAuthenticationInfo(users.get(0),users.get(0).getPassword(),getName());

  }
  return null;
}

}

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注意我这只是模拟，并不是企业级项目，只是搭建，这是我的ajax登陆！

package com.youzhong.controller;

import com.youzhong.entity.User;
import org.apache.shiro.SecurityUtils;
import org.apache.shiro.authc.AuthenticationException;
import org.apache.shiro.authc.IncorrectCredentialsException;
import org.apache.shiro.authc.UnknownAccountException;
import org.apache.shiro.authc.UsernamePasswordToken;
import org.apache.shiro.subject.Subject;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

import javax.servlet.http.HttpServletRequest;

@Controller
@RequestMapping(“user”)
public class UserController {

@RequestMapping("toLogin")
public String toLogin() {
  return "user/login";
}

@RequestMapping(value = "toLoginVerify")
@ResponseBody
public String login(User user, HttpServletRequest req) {
  UsernamePasswordToken token = new UsernamePasswordToken(user.getUsername(), user.getPassword());
  Subject subject = SecurityUtils.getSubject();
  try {
    subject.login(token);
  } catch (UnknownAccountException ex) {
    return "u1";
  } catch (IncorrectCredentialsException ex) {
    return "i1";
  } catch (AuthenticationException e) {
    return "a1";
  }
  return "ok";
}
@RequestMapping("logout")
public String logout(){
  Subject subject = SecurityUtils.getSubject();
  subject.logout();
  return "user/login";
}


@RequestMapping("toNopermission")
public String toNopermission(){
  return "no/nopermission";
}

}

login页面，这是我写的用的easyui

<%–
Created by IntelliJ IDEA.
User: 你好！
Date: 2019/4/9
Time: 16:11
To change this template use File | Settings | File Templates.
–%>
<%@ page contentType=“text/html;charset=UTF-8” language=“java” %>
<%@ include file="/static/taglib.jsp"%>

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