Spring Security
Spring Security 是Spring 项目中用来提供安全认证服务的框架.
- 认证: 是为用户建立一个他所声明的主体, 主体一般指用户, 设备或可以在你系统中执行动作的其他系统.
- 授权: 指的是一个用户能否在你的应用中执行某个操作, 在到达授权判断之前, 身份的主体已经由身份验证过程建立了.
这些概念是通用的, 不是Spring Security特有的, 在身份验证层面, Spring Security广泛支持各种身份验证模式.
入门
导入依赖坐标
<!-- 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>
web.xml配置
<!DOCTYPE web-app PUBLIC
"-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
"http://java.sun.com/dtd/web-app_2_3.dtd" >
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
version="2.5">
<display-name>Archetype Created Web Application</display-name>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring-security.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<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>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
<welcome-file>default.html</welcome-file>
<welcome-file>default.htm</welcome-file>
<welcome-file>default.jsp</welcome-file>
</welcome-file-list>
</web-app>
Spring-Security.xml配置
<?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:http auto-config="true" use-expressions="false">
<!--
intercept-url 定义一个过滤规则 pattern表示对哪些url进行权限控制. access熟悉表示在请求对于的yrl时需要什么权限
默认配置时它应该是一个已逗号分隔的角色列表, 请求的用户只需拥有其中的一个角色就能成功访问对应的URL
-->
<security:intercept-url pattern="/**" access="ROLE_USER"/>
<!--
auto-config 配置后, 不需要在配置下面信息 <security:from-login/>定义登录表单信息
<security:http-basic/> <security:logout/>
-->
</security:http>
<security:authentication-manager>
<security:authentication-provider>
<security:user-service>
<security:user name="user" password="{noop}user" authorities="ROLE_USER"/>
<security:user name="admin" password="{noop}admin" authorities="ROLE_ADMIN"/>
</security:user-service>
</security:authentication-provider>
</security:authentication-manager>
</beans>
指定资源不过滤
<!-- 配置不过滤的资源(静态资源及登录相关) -->
<security:http security="none" pattern="/login.html" />
<security:http security="none" pattern="/failer.html" />
指定登录页面(成功, 失败, 登出)
<security:http auto-config="true" use-expressions="false" >
<!-- 配置资料连接,表示任意路径都需要ROLE_USER权限 -->
<security:intercept-url pattern="/**" access="ROLE_USER" />
<!--
自定义登陆页面,login-page 自定义登陆页面 authentication-failure-url 用户权限校验失败之后才会跳转到这个页面,如果数据库中没有这个用户则不会跳转到这个页面。
default-target-url 登陆成功后跳转的页面。 注:登陆页面用户名固定 username,密码 password,action:login
-->
<security:form-login login-page="/login.html" login-processing-url="/login" username-parameter="username" password-parameter="password" authentication-failure-url="/failer.html" default-target-url="/success.html" authentication-success-forward-url="/success.html"/>
<!--
登出, invalidate-session 是否删除session logout-url:登出处理链接 logout-success-url:登出成功页面
注:登出操作 只需要链接到 logout即可登出当前用户
-->
<security:logout invalidate-session="true" logout-url="/logout" logout-success-url="/login.jsp" />
<!-- 关闭CSRF,默认是开启的 -->
<security:csrf disabled="true" />
</security:http>
UserDetails
UserDetails
UserDetails
是一个接口, 对认证主体进行了规范, 通常使用实现类
User
进行使用
其中
Collection<? extends GrantedAuthority>
代表了角色拥有的权限集合, 其集合继承了
GrantedAuthority
public interface UserDetails extends AuthenticatedPrincipal, Serializable {
Collection<? extends GrantedAuthority> getAuthorities();
String getPassword();
String getUsername();
boolean isAccountNonExpired();
boolean isAccountNonLocked();
boolean isCredentialsNonExpired();
boolean isEnabled();
default String getName() {
return this.getUsername();
}
}
UserDetallService
UserDetallService
IUserService
需要继承
UserDetailsService
类
public interface IUserService extends UserDetailsService {
}
UserServiceImpl
需要实现
loadUserByUsername
方法, 返回值为
UserDetails
, 使用实现类
User
返回
@Override
public UserDetails loadUserByUsername(String s) throws UsernameNotFoundException {
UserInfo userInfo = null;
try {
userInfo = dao.findByUsername(s);
} catch (Exception e) {
e.printStackTrace();
}
assert userInfo != null;
//处理自己的用户对象封装成UserDetails
return new User(userInfo.getUsername(), "{noop}" + userInfo.getPassword(), userInfo.getStatus() == 1, true, true, true, getAuthority(userInfo.getRoles()));
}
构造
User
实体需要传入角色的权限集合, 即
Collection<? extends GrantedAuthority>
, 所以提供了一个私有方法来获取权限的集合, 集合的类型为
SimpleGrantedAuthority
其继承了
GrantedAuthority
.
/**
* 返回一个list集合, 集合中装入的是角色描述
* @return list集合
*/
private List<SimpleGrantedAuthority> getAuthority(List<Role> roles){
List<SimpleGrantedAuthority> list = new ArrayList<>();
for (Role role : roles) {
list.add(new SimpleGrantedAuthority("ROLE_" + role.getRoleName()));
}
return list;
}
完整代码实现:
/**
* @Author Harlan
* @Date 2020/9/25
*/
@Service("userService")
@Transactional
public class UserServiceImpl implements IUserService {
@Autowired
private IUserDao dao;
@Override
public UserDetails loadUserByUsername(String s) throws UsernameNotFoundException {
UserInfo userInfo = null;
try {
userInfo = dao.findByUsername(s);
} catch (Exception e) {
e.printStackTrace();
}
assert userInfo != null;
//处理自己的用户对象封装成UserDetails
return new User(userInfo.getUsername(), "{noop}" + userInfo.getPassword(), userInfo.getStatus() == 1, true, true, true, getAuthority(userInfo.getRoles()));
}
/**
* 返回一个list集合, 集合中装入的是角色描述
* @return list集合
*/
private List<SimpleGrantedAuthority> getAuthority(List<Role> roles){
List<SimpleGrantedAuthority> list = new ArrayList<>();
for (Role role : roles) {
list.add(new SimpleGrantedAuthority("ROLE_" + role.getRoleName()));
}
return list;
}
}