主要实现:SSM框架下使用springSecurity实现登录的认证与授权
认证:即判断登录用户的用户名和密码是否正确
授权:即判断该用户可以执行哪些操作,对哪些页面有访问权限
一、前期准备
1.在项目下的pom.xml文件中分别加入以下两段内容:
<spring.security.version>5.0.1.RELEASE</spring.security.version>
加入到properties中用来声明版本
<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>
加入到dependencies中用来声明引入的jar包
2.在WEB-INF目录下的web.xml文件中添加过滤器,即在该文件中添加代码如下
<filter>
<filter-name>springSecurityFilterChain</filter-name>
<filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>
</filter>
<filter-mapping>
<filter-name>springSecurityFilterChain</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
3.spring-security.xml核心配置文件
<?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="/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')"/>
<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>
<security:authentication-provider user-service-ref="userInfoService">
<!-- 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>
加载springSecurity.xml:
在web.xml 里面加载springSecurity.xml,方法是在该文件中的context-param中的param-value新增classpath:spring-security.xml,如下图
在数据库中新建两张表role和user_role
表中的数据如下
role表
user_role表
二、改代码
1.UserService.java接口继承UserDetailsService
首先要在IUserInfoDao中定义findUserByName方法,并在UserMapper.xml中实现
UserInfo.xml中增加
<select id="findUserByName" parameterType="String" resultType="com.zhongruan.bean.UserInfo">
select * from userinfo where name=#{name}
</select>
2.增加Role实体类
package com.zhongruan.bean;
public class Role {
private int id;
private String roleName;
private String roleDesc;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getRoleName() {
return roleName;
}
public void setRoleName(String roleName) {
this.roleName = roleName;
}
public String getRoleDesc() {
return roleDesc;
}
public void setRoleDesc(String roleDesc) {
this.roleDesc = roleDesc;
}
@Override
public String toString() {
return "Role{" +
"id=" + id +
", roleName='" + roleName + '\'' +
", roleDesc='" + roleDesc + '\'' +
'}';
}
}
3.增加IRoleDao接口
package com.zhongruan.dao;
import com.zhongruan.bean.Role;
import javax.print.DocFlavor;
import java.util.List;
public interface IRoleDao {
List<Role> findRoleByUserId(int userId);
}
4.新建RoleMapper.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.zhongruan.dao.IRoleDao" >
<select id="findRoleByUserId" parameterType="int" resultType="com.zhongruan.bean.Role">
select * from role where id in (select roleId from user_role where userId=#{userId})
</select>
</mapper>
5.改写UserInfoServiceImpl
@Override
public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
UserInfo userInfo =userInfoDao.findUserByName(username);
List<Role>roles=roleDao.findRoleByUserId(userInfo.getId());
User user=new User(userInfo.getName(),"{noop}"+userInfo.getPassword(),getAuthority(roles));
return user;
}
private Collection<? extends GrantedAuthority> getAuthority(List<Role> roles) {
List<SimpleGrantedAuthority>list=new ArrayList<>();
for(Role role:roles){
list.add(new SimpleGrantedAuthority("ROLE_"+role.getRoleName()));
}
return list;
}
可以将UserInfoController中的login.do方法注释掉
6.修改login.jsp
修改响应路径即可
小插曲,遇到了传参问题
loadUserByUsername 默认参数名为 String username,页面提交参数名必须也为username,否则security取不到值