Spering-Security
概述
1、spring中提供安全认证服务的框架
认证：验证用户密码是否正确的过程
授权：对用户的访问资源进行控制简单使用
目标：实现管理员和普通用户权限不同，登录后看到界面不同
- 配置pom.xml
- 在web.xml中配置Security的过滤器
- 配置Spring-Security.xml
1、使用maven，在pom.xml中配置依赖jar包
<!--spring-security-->
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-web</artifactId>
<version>${spring.security.version}</version>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-config</artifactId>
<version>${spring.security.version}</version>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-core</artifactId>
<version>${spring.security.version}</version>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-taglibs</artifactId>
<version>${spring.security.version}</version>
</dependency>2、在web.xml中配置Spring-Security的过滤器，会拦截所有请求
在进入服务器tomcat之后，但是在进入servlet之前生效
<filter>
<filter-name>springSecurityFilterChain</filter-name>
<filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>
</filter>
<filter-mapping>
<filter-name>springSecurityFilterChain</filter-name>
<!--拦截所有请求-->
<url-pattern>/*</url-pattern>
</filter-mapping>3、配置Spring-Security.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:security="http://www.springframework.org/schema/security"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/security
http://www.springframework.org/schema/security/spring-security.xsd">
<security:global-method-security pre-post-annotations="enabled" jsr250-annotations="enabled" secured-annotations="enabled"></security:global-method-security>
<!-- 配置不拦截的资源 -->
<security:http pattern="/login.jsp" security="none"/>
<security:http pattern="/index.jsp" security="none"/>
<security:http pattern="/failer.jsp" security="none"/>
<security:http pattern="/css/**" security="none"/>
<security:http pattern="/img/**" security="none"/>
<security:http pattern="/plugins/**" security="none"/>
<!--
配置具体的规则
auto-config="true" 不用自己编写登录的页面，框架提供默认登录页面
use-expressions="false" 是否使用SPEL表达式（没学习过）
-->
<security:http auto-config="true" use-expressions="true">
<!-- 配置具体的拦截的规则 pattern="请求路径的规则" access="访问系统的人，必须有ROLE_USER的角色" -->
<security:intercept-url pattern="/**" access="hasAnyRole('ROLE_USER','ROLE_ADMIN')"/>
<!--默认的页面和验证方法-->
<security:form-login login-page="/login.jsp"
login-processing-url="/login.do"
default-target-url="/index.jsp"
authentication-failure-url="/failer.jsp"
authentication-success-forward-url="/pages/main.jsp"/>
<!-- 关闭跨域请求 -->
<security:csrf disabled="true"/>
<!--退出并跳转到首页-->
<security:logout invalidate-session="true" logout-url="/logout.do" logout-success-url="/login.jsp"></security:logout>
</security:http>
<!-- 切换成数据库中的用户名和密码 -->
<security:authentication-manager>
<!--对应用户service，@Service(userService)-->
<security:authentication-provider user-service-ref="userService">
<!-- 配置加密的方式
<security:password-encoder ref="passwordEncoder"/> -->
</security:authentication-provider>
</security:authentication-manager>
<!-- 配置加密类 -->
<bean id="passwordEncoder" class="org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder"/>
<!-- <bean id="webexpressionHandler" class="org.springframework.security.web.access.expression.DefaultWebSecurityExpressionHandler" />-->
<!-- 提供了入门的方式，在内存中存入用户名和密码
<security:authentication-manager>
<security:authentication-provider>
<security:user-service>
<security:user name="admin" password="{noop}admin" authorities="ROLE_USER"/>
</security:user-service>
</security:authentication-provider>
</security:authentication-manager>
-->
</beans>4、用户表和权限表关联（外键或新创建一张表）新建一张关联表
通过查询关联表得知用户的权限，给予不同的界面
5、mybatis中查询语句
<select id="findRoleByUserId" parameterType="Integer" resultType="com.zhongruan.bean.Role">
select * from tb_role where rid in (select rid from tb_user_role where uid=#{uid})
</select>6、在用户service中继承UserDetailsService,重写loadUserByUsername方法
登录时会调用该方法
@Override
public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
//根据用户名查询到当前登录用户
UserInfo userInfo = UserInfoDao.doLogin(username);
//根据当前用户的ID，去查询到所属的角色
List<Role> roleList = roleDao.findRoleByUserId(userInfo.getId());
userInfo.setRoles(roleList);
//得到想要的信息后，就要交给Security去处理了
User user=new User(userInfo.getUsername(),"{noop}"+userInfo.getPassword(),getAuthority(roleList));
return user;
}
private Collection<? extends GrantedAuthority> getAuthority(List<Role> roleList) {
List<SimpleGrantedAuthority> list=new ArrayList<>();
for (Role role :
roleList) {
//拼接字符串，对应数据库中的ROLE_USER,ROLE_ADMAIN;Spring-Security.xml中的ROLE_USER,ROLE_ADMAIN
list.add(new SimpleGrantedAuthority("ROLE_"+role.getRname()));
}
return list;
}在前端jsp页面中使用
需要在jsp页面头部加上：
<%@taglib prefix=“security” uri=“http://www.springframework.org/security/tags” %>
- 获取当前登录用户信息
<div sec:authorize="isAuthenticated()">
<p>登录名：<span sec:authentication="name"></span></p>
<p>角色：<span sec:authentication="principal.authorities"></span></p>
<p>Username：<span sec:authentication="principal.username"></span></p>
<div sec:authorize="hasAuthority('ROLE_user:view:GET')">用户列表</div>
<div sec:authorize="hasRole('user:add:POST')">添加用户</div>
<div sec:authorize="hasAuthority('ROLE_user:update:PUT')">修改用户</div>
<div sec:authorize="hasAuthority('ROLE_user:delete:DELETE')">删除用户</div>
</div>- 普通用户不能看到用户管理界面,只能管理员看得到
<security:authorize access="hasRole('ADMIN')">
<a href="${pageContext.request.contextPath}/user/findAll.do?page=1&size=5"> <i
class="fa fa-circle-o"></i> 用户管理
</a></security:authorize>常用的标签库
sec:authorize 权限
sec:authentication 认证
sec:authorize-url : 不能直接使用还需额外的配置 (也不建议使用该标签，因为该标签不支持restful风格)SecurityExpressionRoot常用的表达式
boolean hasAuthority(String authority)
boolean hasAnyAuthority(String… authorities)
boolean hasRole(String role)
hasAnyRole(String… roles)
Authentication getAuthentication()
Object getPrincipal()
boolean isAnonymous()
boolean isAuthenticated()
boolean isRememberMe()
本文章为转载内容，我们尊重原作者对文章享有的著作权。如有内容错误或侵权问题，欢迎原作者联系我们进行内容更正或删除文章。
