为什么要集成Spring?
我们的项目基本都是通过Spring来管理bean的,如果要想使用Shiro,那就要把shiro集成到Spring。集成Spring的核心就是把框架的核心类(SecurityManager,Subject,Realm)交给Spring管理
集成
第一步- -在自己的项目中导入相关的jar包
<!-- shiro的支持包 -->
<dependency>
<groupId>org.apache.shiro</groupId>
<artifactId>shiro-all</artifactId>
<version>1.4.0</version>
<type>pom</type>
</dependency>
<!-- shiro与Spring的集成包 -->
<dependency>
<groupId>org.apache.shiro</groupId>
<artifactId>shiro-spring</artifactId>
<version>1.4.0</version>
</dependency>
第二步- -配置文件
在web.xml中配置shiroFilter
Spring与shiro集成:需要定义一个shiro过滤器(这是一个代理过滤器,它会到spring的配置中找一个名称相同的真实过滤器)
<filter>
<filter-name>shiroFilter</filter-name>
<filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>
<init-param>
<param-name>targetFilterLifecycle</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>shiroFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
配置applicationContext-shiro.xml文件
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
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-3.0.xsd">
<!--spring管理shiro的核心对象-->
<bean id="securityManager" class="org.apache.shiro.web.mgt.DefaultWebSecurityManager">
<property name="realm" ref="itsourceRealm"/>
</bean>
<!--配置自定义realm-->
<bean id="itsourceRealm" class="cn.itsource.aisell.realm.ItsourceRealm">
<!--密码匹配器-->
<property name="credentialsMatcher">
<bean class="org.apache.shiro.authc.credential.HashedCredentialsMatcher">
<property name="hashAlgorithmName" value="MD5"/>
<property name="hashIterations" value="10"/>
</bean>
</property>
</bean>
<!--
shiro的核心bean
注意: 该bean的id必须要和web.xml中代理过滤器的名字一致,否则要报错
-->
<bean id="shiroFilter" class="org.apache.shiro.spring.web.ShiroFilterFactoryBean">
<property name="securityManager" ref="securityManager"/>
<!--如果你没有认证通过,直接跳到loginUrl对应的页面-->
<property name="loginUrl" value="/login/login.jsp"/>
<!--登录成功之后,跳转的指定的界面-->
<property name="successUrl" value="/login/success.jsp"/>
<!-- 如果没有对应的权限则跳到unauthorizedUrl对应的界面-->
<property name="unauthorizedUrl" value="/login/unauthorized.jsp"/>
<!-- 配置过滤器链-->
<!--
这种方式真实开发不用,因为数据写死了的,灵活性较差
<property name="filterChainDefinitions">
<value>
anon:匿名过滤器,直接放行
authc:必须认证通过之后,才能放行
logout:登出
/s/login.jsp = anon
/login=anon
/logout=logout
/employee/index=perms["employee:*"]
/dept/index=perms["dept:index"] 访问/dept/index必须要拥有dept:index权限
/** = authc
</value>
</property>
-->
<property name="filterChainDefinitionMap" ref="filterChainDefinitionMap"/>
<!--自定义过滤器权限-->
<property name="filters">
<map>
<entry key="itsourceFilter">
<bean class="cn.itsource.aisell.realm.ItsourcePermissionsAuthorizationFilter"/>
</entry>
</map>
</property>
</bean>
<bean id="chainDefinitionMap" class="cn.itsource.aisell.realm.ItsourceFilterChainDefinitionMap"/>
<bean id="filterChainDefinitionMap" factory-bean="chainDefinitionMap" factory-method="createMap"/>
</beans>
在applicationContext.xml中引入shiro文件
<!-- 引入shiro.xml文件-->
<import resource="classpath:applicationContext-shiro.xml"/>
在配置文件中我们自定义了Realm和过滤器权限 还有配置过滤器链
因为现有的Realm都不能满足我们的需求 而这种情况下,就需要我们自己定义一个Realm来实现相应的功能
自定义Realm一般直接继承AuthorizingRealm接口即可(里面包含身份认证与授权两个方法)
什么是Realm?
Realm:域,Shiro 从 Realm 获取安全数据(如用户、角色、权限),就是说 SecurityManager 要验证用户身份,那么它需要从 Realm 获取相应的用户进行比较以确定用户身份是否合法;也需要从 Realm 得到用户相应的角色/权限进行验证用户是否能进行操作;可以把 Realm 看成 DataSource , 即 安 全 数 据 源 。(摘自《跟我学Shiro》
自定义Realm
ItsourceRealm
import cn.itsource.aisell.domain.Employee;
import cn.itsource.aisell.service.IEmployeeService;
import cn.itsource.aisell.service.IPermissionService;
import cn.itsource.aisell.util.Md5Util;
import org.apache.shiro.authc.AuthenticationException;
import org.apache.shiro.authc.AuthenticationInfo;
import org.apache.shiro.authc.AuthenticationToken;
import org.apache.shiro.authc.SimpleAuthenticationInfo;
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.util.ByteSource;
import org.springframework.beans.factory.annotation.Autowired;
import java.util.Set;
public class ItsourceRealm extends AuthorizingRealm {
@Autowired
private IEmployeeService employeeService;
@Autowired
private IPermissionService permissionService;
/**
* 授权方法
* @param principalCollection
* @return
*/
@Override
protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principalCollection) {
SimpleAuthorizationInfo info = new SimpleAuthorizationInfo();
Set<String> permissions = permissionService.findPermissionsByUserLogin();
info.setStringPermissions(permissions);
return info;
}
/**
* 认证方法
* @param token
* @return
* @throws AuthenticationException
*/
@Override
protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken token) throws AuthenticationException {
//获取用户名
String principal = (String) token.getPrincipal();
//根据用户名查找用户
Employee employee = employeeService.findByUsername(principal);
if (employee == null) {
return null;
}
ByteSource salt = ByteSource.Util.bytes(Md5Util.SALT);
//当前的realm名 getName()
return new SimpleAuthenticationInfo(employee,employee.getPassword(),salt,getName());
}
}
自定义过滤器链
ItsourceFilterChainDefinitionMap.java
public class ItsourceFilterChainDefinitionMap {
@Autowired
private IPermissionService permissionService;
public Map<String,String> createMap(){
Map<String, String> map = new LinkedHashMap<>();
map.put("/login/login.jsp", "anon");
map.put("/login", "anon");
map.put("/login/**", "anon");
map.put("/forget/forget", "anon");
map.put("/static/**", "anon");
map.put("/*.jsp", "anon");
map.put("/logout", "logout");
List<Permission> all = permissionService.findAll();
for (Permission permission : all) {
map.put(permission.getUrl(),"itsourceFilter["+permission.getSn()+"]");
}
map.put("/**", "authc");
/*
anon:匿名过滤器,直接放行
authc:必须认证通过之后,才能放行
logout:登出
*/
return map;
}
}
Authentication 身份认证
LoginController.java
@Controller
public class LoginController {
@RequestMapping("/login")
@ResponseBody
public String login(String username,String password){
Subject currentUser = SecurityUtils.getSubject(); //拿到当前用户
if(!currentUser.isAuthenticated()){ //如果这个用户没有登录,则进行登录认证
try {
UsernamePasswordToken token = new UsernamePasswordToken(username,password);
//调用login方法时底层会去调用realm中的认证方法
currentUser.login(token);
return new AjaxResult();
}catch (UnknownAccountException e) {
e.printStackTrace();
return new AjaxResult(false, "账号不存在");
}catch (IncorrectCredentialsException e) {
e.printStackTrace();
return new AjaxResult(false, "密码错误");
} catch (AuthenticationException e) {
e.printStackTrace();
//当出现这个错误时候 就说明是代码哪里错了
return new AjaxResult(false, "网络繁忙请稍后再试");
}
}
}
@RequestMapping("/logout")
public String logout(){
Subject currentUser = SecurityUtils.getSubject();
currentUser.logout();
return new AjaxResult(true, "注销成功");
}
}