学习springboot+shiro的实际应用demo

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学习springboot+shiro的实际应用demo

学习springboot+shiro的应用

一、创建一个springboot的web项目

至此项目建成，完整项目目录如下：

运行项目：

运行结果如下：

二、配置shiro

首先是导入jar包：


<dependency>
    <groupId>org.apache.shiro</groupId>
    <artifactId>shiro-spring</artifactId>
    <version>1.4.1</version>
</dependency>


<dependency>
    <groupId>org.thymeleaf</groupId>
    <artifactId>thymeleaf-spring5</artifactId>
</dependency>

<dependency>
    <groupId>org.thymeleaf.extras</groupId>
    <artifactId>thymeleaf-extras-java8time</artifactId>
</dependency>

其中thymeleaf只要是前台要用

下面是index.html的代码：

<!DOCTYPE html>
<html lang="en" xmlns:th = "http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>首页</title>
</head>
<body>

<h1>首页</h1>
<p th:text="${msg}"></p>
<hr>

<a th:href="@{/user/add}">add</a> | <a th:href="@{/user/update}">update</a>

</body>
</html>

接下来是MyController 的全部代码，即demo所需全部controller：

package com.song.shirodemo.controller;

import org.apache.shiro.SecurityUtils;
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.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

@Controller
public class MyController {

    @RequestMapping(value = {"/","/index"})
    public String toIndex(Model model){
        model.addAttribute("msg","hello,Shiro");
        return "index";
    }

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

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

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

    @RequestMapping("/login")
    public String login(String username,String password,Model model){
        //获取当前的用户
        Subject subject = SecurityUtils.getSubject();
        //封装用户的登录数据
        UsernamePasswordToken token = new UsernamePasswordToken(username, password);

        try {
            subject.login(token);//执行登录方法，如果没有异常就说明ok了
            return "index";
        } catch (UnknownAccountException e) {//用户名不存在
            model.addAttribute("msg","用户名错误");
//            e.printStackTrace();
            return "login";
        }catch (IncorrectCredentialsException e) {//密码错误或不存在
            model.addAttribute("msg","密码错误");
            return "login";
        }

    }

    @ResponseBody
    @RequestMapping("/noauth")
    public String unauthorized(){
        return "未经授权无法访问此页面";
    }

    @RequestMapping("/logout")
    public String logout(String username,String password,Model model){
        //获取当前的用户
        Subject currentUser = SecurityUtils.getSubject();
        currentUser.logout();
        return "login";
    }

}

接下来是三个要用到的页面目录结构：

下面是login.html的代码：

<!DOCTYPE html>
<html lang="en" xmlns:th = "http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<h1>登录</h1>
<hr>

<p th:text="${msg}" style="color: red;"></p>
<form th:action="@{/login}">
    <p>用户名：<input type="text" name="username"></p>
    <p>密码：<input type="text" name="password"></p>
    <p><input type="submit"></p>
</form>

</body>
</html>

add.html的代码：

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>add</title>
</head>
<body>

<h1>add</h1>

</body>
</html>

update.html的代码：

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>update</title>
</head>
<body>
<h1>update</h1>
</body>
</html>

此时把 @RequestMapping("/login") 里的内容注释掉只留一个:

return "index";

可以正常运行跳转。

三、添加shiro

结构目录如下：

1.添加UserRealm

代码如下：

package com.example.demo.config;

import org.apache.shiro.authc.AuthenticationException;
import org.apache.shiro.authc.AuthenticationInfo;
import org.apache.shiro.authc.AuthenticationToken;
import org.apache.shiro.authz.AuthorizationInfo;
import org.apache.shiro.realm.AuthorizingRealm;
import org.apache.shiro.subject.PrincipalCollection;

public class UserRealm extends AuthorizingRealm {
    //授权
    @Override
    protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principalCollection) {
        return null;
    }

    //认证
    @Override
    protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken authenticationToken) throws AuthenticationException {
        return null;
    }
}

2.添加ShiroConfig设置，注意不要少了注解

代码如下：

package com.example.demo.config;

import org.apache.shiro.spring.web.ShiroFilterFactoryBean;
import org.apache.shiro.web.mgt.DefaultWebSecurityManager;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import java.util.LinkedHashMap;
import java.util.Map;

@Configuration
public class ShiroConfig {

    //ShiroFilterFactoryBean
    @Bean
    public ShiroFilterFactoryBean getShiroFilterFactoryBean(@Qualifier("securityManager") DefaultWebSecurityManager securityManager){
        ShiroFilterFactoryBean bean = new ShiroFilterFactoryBean();
        //设置安全管理器
        bean.setSecurityManager(securityManager);

        //添加shiro的内置过滤器
        /*
            anon: 无需认证就可以访问
            authc: 必须认证了才能访问
            user: 必须拥有记住我功能才能用
            perms: 拥有对某个资源的权限才能访问
            role：拥有某个角色权限才能访问
         */

        //登录拦截
        Map<String,String> filterMap = new LinkedHashMap<>();
        filterMap.put("/user/add","authc");
        filterMap.put("/user/update","authc");

        bean.setFilterChainDefinitionMap(filterMap);

        //设置登录的请求
        bean.setLoginUrl("/toLogin");

        return bean;
    }

    //DefaultWebSecurityManager
    @Bean(name="securityManager")
    public DefaultWebSecurityManager getDefaultWebSecurityManager(@Qualifier("userRealm") UserRealm userRealm){
        DefaultWebSecurityManager securityManager = new DefaultWebSecurityManager();
        //关联 UserRealm
        securityManager.setRealm(userRealm);
        return securityManager;
    }

    //创建 realm 对象，需要自定义类1 ,@Bean被Spring托管了
    @Bean
    public UserRealm userRealm(){
        return new UserRealm();
    }
}

至此shiro基本配置已经完成，运行项目时会自动拦截：

四、加上mybatis以及shiro和thymeleaf整合

1.添加jar包


<dependency>
    <groupId>com.github.theborakompanioni</groupId>
    <artifactId>thymeleaf-extras-shiro</artifactId>
    <version>2.0.0</version>
</dependency>


<dependency>
    <groupId>org.projectlombok</groupId>
    <artifactId>lombok</artifactId>
</dependency>

<dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
</dependency>

<dependency>
    <groupId>org.mybatis.spring.boot</groupId>
    <artifactId>mybatis-spring-boot-starter</artifactId>
    <version>2.1.0</version>
</dependency>

<dependency>
    <groupId>log4j</groupId>
    <artifactId>log4j</artifactId>
    <version>1.2.17</version>
</dependency>

<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>druid</artifactId>
    <version>1.1.12</version>
</dependency>


2.添加mybatis的配置文件

机构目录如下：

（1）application.yml

spring:
  datasource:
    #   数据源基本配置
    username: root
    password: root
    driver-class-name: com.mysql.jdbc.Driver
    url: jdbc:mysql://localhost:3306/sxh?useUnicode=true&characterEncoding=UTF-8&zeroDateTimeBehavior=convertToNull&serverTimezone=GMT%2B8
    type: com.alibaba.druid.pool.DruidDataSource
    #   数据源其他配置
    initialSize: 5
    minIdle: 5
    maxActive: 20
    maxWait: 60000
    timeBetweenEvictionRunsMillis: 60000
    minEvictableIdleTimeMillis: 300000
    validationQuery: SELECT 1 FROM DUAL
    testWhileIdle: true
    testOnBorrow: false
    testOnReturn: false
    poolPreparedStatements: true
    #   配置监控统计拦截的filters，去掉后监控界面sql无法统计，'wall'用于防火墙
    filters: stat,wall,log4j
    maxPoolPreparedStatementPerConnectionSize: 20
    useGlobalDataSourceStat: true
    connectionProperties: druid.stat.mergeSql=true;druid.stat.slowSqlMillis=500

（2）application.properties

　　mybatis.type-aliases-package=com.example.demo.pojo
　　mybatis.mapper-locations=classpath:mapper/*.xml

3.添加UserService所需要的相关文件

（1）实体类

package com.example.demo.pojo;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

@Data
@AllArgsConstructor
@NoArgsConstructor
public class User {

    private int id;
    private String name;
    private String pwd;
    private String perms;

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getPwd() {
        return pwd;
    }

    public void setPwd(String pwd) {
        this.pwd = pwd;
    }

    public String getPerms() {
        return perms;
    }

    public void setPerms(String perms) {
        this.perms = perms;
    }
}

（2）UserMapper类：

package com.example.demo.mapper;

import com.example.demo.pojo.User;
import org.apache.ibatis.annotations.Mapper;
import org.springframework.stereotype.Repository;

@Repository
@Mapper
public interface UserMapper {

    public User queryUserByName(String name);
}

（3）mapper/UserMapper.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
        PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">

<mapper namespace="com.example.demo.mapper.UserMapper">

    
    <select id="queryUserByName" parameterType="String" resultType="User">
      select * from sxh.user where name=#{name};
   </select>

</mapper>

（4）UserService接口

package com.example.demo.service.userService;

import com.example.demo.pojo.User;
public interface UserService {
    public User queryUserByName(String name);
}

（5）UserService接口的实现类UserServiceImpl

package com.example.demo.service.userService.impl;

import com.example.demo.mapper.UserMapper;
import com.example.demo.pojo.User;
import com.example.demo.service.userService.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

@Service
public class UserServiceImpl implements UserService {

    @Autowired
    UserMapper userMapper;

    @Override
    public User queryUserByName(String name) {
        return userMapper.queryUserByName(name);
    }
}

4.修改shiro先关配置

（1）ShiroConfig中的getShiroFilterFactoryBean方法添加内容：

    @Bean
    public ShiroFilterFactoryBean getShiroFilterFactoryBean(@Qualifier("securityManager") DefaultWebSecurityManager securityManager){
        ShiroFilterFactoryBean bean = new ShiroFilterFactoryBean();
        //设置安全管理器
        bean.setSecurityManager(securityManager);

        //添加shiro的内置过滤器
        /*
            anon: 无需认证就可以访问
            authc: 必须认证了才能访问
            user: 必须拥有记住我功能才能用
            perms: 拥有对某个资源的权限才能访问
            role：拥有某个角色权限才能访问
         */

        //登录拦截
        Map<String,String> filterMap = new LinkedHashMap<>();
//        filterMap.put("/user/add","authc");
//        filterMap.put("/user/update","authc");

        //授权, 正常情况下，没授权会跳到未授权页面
        // 授权要放在前面？放后面就不管用了
        filterMap.put("/user/add","perms[user:add]");
        filterMap.put("/user/update","perms[user:update]");

        filterMap.put("/user/*","authc");

        //设置登录的请求
        bean.setLoginUrl("/toLogin");
        //未授权页面
        bean.setUnauthorizedUrl("/noauth");

        bean.setFilterChainDefinitionMap(filterMap);

        return bean;
    }

  （2）给UserRealm添加内容，代码如下：

package com.example.demo.config;

import com.example.demo.pojo.User;
import com.example.demo.service.userService.UserService;
import org.apache.shiro.SecurityUtils;
import org.apache.shiro.authc.*;
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.apache.shiro.subject.Subject;
import org.springframework.beans.factory.annotation.Autowired;

public class UserRealm extends AuthorizingRealm {

    @Autowired
    UserService userService;

    //授权
    @Override
    protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principalCollection) {
        System.out.println("执行了=>授权 doGetAuthorizationInfo");
        SimpleAuthorizationInfo info = new SimpleAuthorizationInfo();
//        info.addStringPermission("user:add");
        //拿到当前登录的这个对象
        Subject subject = SecurityUtils.getSubject();
        User currentUser = (User) subject.getPrincipal();
        if(currentUser.getPerms()!=null){
            info.addStringPermission(currentUser.getPerms());
        }
        return info;
    }

    //认证
    @Override
    protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken token) throws AuthenticationException {
        System.out.println("执行了=>认证 doGetAuthenticationInfo");
        UsernamePasswordToken userToken = (UsernamePasswordToken) token;
        //连接真实的数据库
        User user = userService.queryUserByName(userToken.getUsername());
        if(user==null){//没有这个人
            return null; //抛出异常 UnknownAccountException
        }
        //密码认证，shiro
        return new SimpleAuthenticationInfo(user,user.getPwd(),"");
    }
}

此时可以把MyController中的@RequestMapping("/login")中的注释都拿掉了

对了忘记数据库了：

接下来就是检验成果的时候了：

①登录

②index页面

③点击add未经授权无法访问此页面

④点击update跳转update页面

至此，实际上已经结束了，关于shiro和thymeleaf的整合，主要是index.html页面，

代码修改如下：

<!DOCTYPE html>
<html lang="en" xmlns:th = "http://www.thymeleaf.org"
      xmlns:shiro="http://www.thymeleaf.org/thymeleaf-extras-shiro">
<head>
    <meta charset="UTF-8">
    <title>首页</title>
</head>
<body>
<h1>首页</h1>
<p th:text="${msg}"></p>
<hr>
<div shiro:hasPermission="user:add">
    <a th:href="@{/user/add}">add</a>
</div>
<div shiro:hasPermission="user:update">
    <a th:href="@{/user/update}">update</a>
</div>
<a th:href="@{/logout}">logout</a>
</body>
</html>

此时，没有user:add权限的就不再显示add的连接了，同样，没有user:update权限的也不再显示update的连接了。

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原文地址：https://www.cnblogs.com/fzly-88/p/12360417.html