详解springboot?springsecuroty中的注销和权限控制问题

来源：jb51　　时间：2022/3/8 12:55:18　　对本文有异议

1 账户注销

1.1 在SecurityConfig中加入开启注销功能的代码

src/main/java/com/lv/config/SecurityConfig.java

package com.lv.config;
 
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
//AOP : 拦截器!
@EnableWebSecurity
public class SecurityConfig extends WebSecurityConfigurerAdapter {
    //授权
    @Override
    public void configure(HttpSecurity http) throws Exception {
        //首页所有人都可以访问,功能页只有对应的有权限的人才能访问
        //请求授权的规则~(链式编程)
        http.authorizeRequests()
                .antMatchers("/").permitAll()
                .antMatchers("/level1/**").hasRole("vip1")
                .antMatchers("/level2/**").hasRole("vip2")
                .antMatchers("/level3/**").hasRole("vip3");
        //没有权限默认会跳转到登录页,需要开启登录页面
        http.formLogin();
        //注销,开启了注销功能,跳到首页
        http.logout().logoutSuccessUrl("/");
        //防止跨站工具, get,post
        http.csrf().disable();//关闭csrf功能,注销失败可能的原因
    }
    //认证,springboot 2.1.x 可以直接使用
    //密码编码:PasswordEncoder
    //在Spring Security 5.0+ 新增了很多加密方法~
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
        //这些数据正常应该从数据库中读
        auth.inMemoryAuthentication().passwordEncoder(new BCryptPasswordEncoder())
                .withUser("lv").password(new BCryptPasswordEncoder().encode("123456")).roles("vip2","vip3")
                .and()
                .withUser("root").password(new BCryptPasswordEncoder().encode("123456")).roles("vip1","vip2","vip3")
                .withUser("guest").password(new BCryptPasswordEncoder().encode("123456")).roles("vip1");
}

1.2 在index.html 添加注销的按钮

src/main/resources/templates/index.html

<!--登录注销-->
<div class="right menu">
    <div>
        <a class="item" th:href="@{/toLogin}">
            <i class="address card icon"></i>登录
        </a>
    </div>
    <div>
        <a class="item" th:href="@{/logout}">
            <i class="sign-out icon"></i>注销
        </a>
    </div>
</div>

1.3 启动项目测试

访问登录页面,登录 guest 账户,该账户可以访问 level1的页面

登录成功后,点击 level1的链接,成功跳转到 level 页面,然后点击注销按钮

弹回到首页,再次点击点击 level1 页面

跳转到了登录页面

说明账户注销成功

2 权限控制

2.1 导入springsecurity和thymeleaf的整合依赖

pom.xml

<!-- springSecurity和thymeleaf整合包 -->
<dependency>
    <groupId>org.thymeleaf.extras</groupId>
    <artifactId>thymeleaf-extras-springsecurity4</artifactId>
    <version>3.0.2.RELEASE</version>
</dependency>

2.2 springboot版本降级

pom.xml

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.0.9.RELEASE</version>
    <relativePath/> <!-- lookup parent from repository -->
</parent>

必须将springboot的版本降到2.0.9以下,否则 sec:authorize="isAuthenticated()" 不会生效.版本降低后,需要手动导入junit依赖,否则测试类会报错

<dependency>
    <groupId>org.junit.jupiter</groupId>
    <artifactId>junit-jupiter</artifactId>
    <version>RELEASE</version>
    <scope>test</scope>
</dependency>

2.3 引入约束

在index.html的头文件中添加springsecurity和thymeleaf的整合约束

src/main/resources/templates/index.html

<html xmlns:th="http://www.thymeleaf.org"
      xmlns:sec="http://www.thymeleaf.org/thymeleaf-extras-springsecurity4">

2.4 修改页面代码

主要修改两部分,一部分是登录状态下显示用户名,和注销按钮,未登录显示登录按钮通过 sec:authorize="isAuthenticated()" 实现.另一部分是根据登录用户的权限显示不同的页面菜单,通过 sec:authorize="hasRole('vip1')" 实现.

src/main/resources/templates/index.html

<!DOCTYPE html>
<html xmlns:th="http://www.thymeleaf.org"
      xmlns:sec="http://www.thymeleaf.org/thymeleaf-extras-springsecurity4">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1">
    <title>首页</title>
    <!--semantic-ui-->
    <link href="https://cdn.bootcss.com/semantic-ui/2.4.1/semantic.min.css" rel="stylesheet">
    <link th:href="@{/qinjiang/css/qinstyle.css}" rel="stylesheet">
</head>
<body>
 
<!--主容器-->
<div class="ui container">
    <div class="ui segment" id="index-header-nav" th:fragment="nav-menu">
        <div class="ui secondary menu">
            <a class="item"  th:href="@{/index}">首页</a>
            <!--登录注销-->
            <div class="right menu">
                <!--如果未登录:显示登录按钮-->
                <div sec:authorize="!isAuthenticated()">
                    <a class="item" th:href="@{/toLogin}">
                        <i class="address card icon"></i>登录
                    </a>
                </div>
                <!--如果已登录:显示用户名和注销按钮-->
                <div sec:authorize="isAuthenticated()">
                    <a class="item">
                        用户名:<span sec:authentication="name"></span>
                    </a>
                </div>
                <div sec:authorize="isAuthenticated()">
                    <a class="item" th:href="@{/logout}">
                        <i class="sign-out icon"></i>注销
                    </a>
                </div>
            </div>
        </div>
    </div>
    <div class="ui segment" style="text-align: center">
        <h3>Spring Security Study by 秦疆</h3>
    </div>
    <div>
        <br>
        <div class="ui three column stackable grid">
            <!--菜单根据用户的角色动态实现-->
            <div class="column" sec:authorize="hasRole('vip1')">
                <div class="ui raised segment">
                    <div class="ui">
                        <div class="content">
                            <h5 class="content">Level 1</h5>
                            <hr>
                            <div><a th:href="@{/level1/1}"><i class="bullhorn icon"></i> Level-1-1</a></div>
                            <div><a th:href="@{/level1/2}"><i class="bullhorn icon"></i> Level-1-2</a></div>
                            <div><a th:href="@{/level1/3}"><i class="bullhorn icon"></i> Level-1-3</a></div>
                        </div>
                    </div>
                </div>
            </div>
            <div class="column" sec:authorize="hasRole('vip2')">
                <div class="ui raised segment">
                    <div class="ui">
                        <div class="content">
                            <h5 class="content">Level 2</h5>
                            <hr>
                            <div><a th:href="@{/level2/1}"><i class="bullhorn icon"></i> Level-2-1</a></div>
                            <div><a th:href="@{/level2/2}"><i class="bullhorn icon"></i> Level-2-2</a></div>
                            <div><a th:href="@{/level2/3}"><i class="bullhorn icon"></i> Level-2-3</a></div>
                        </div>
                    </div>
                </div>
            </div>
            <div class="column" sec:authorize="hasRole('vip3')">
                <div class="ui raised segment">
                    <div class="ui">
                        <div class="content">
                            <h5 class="content">Level 3</h5>
                            <hr>
                            <div><a th:href="@{/level3/1}"><i class="bullhorn icon"></i> Level-3-1</a></div>
                            <div><a th:href="@{/level3/2}"><i class="bullhorn icon"></i> Level-3-2</a></div>
                            <div><a th:href="@{/level3/3}"><i class="bullhorn icon"></i> Level-3-3</a></div>
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </div>
</div>
<script th:src="@{/qinjiang/js/jquery-3.1.1.min.js}"></script>
<script th:src="@{/qinjiang/js/semantic.min.js}"></script>
</body>
</html>