spring整合apache-shiro的简单使用

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这里不对shiro进行介绍,介绍什么的没有意义

初学初用,不求甚解,简单使用

一.导入jar包(引入坐标)

<dependency>
<groupId>org.apache.shiro</groupId>
<artifactId>shiro-spring</artifactId>
<version>1.3.2</version>
</dependency>

<dependency>
<groupId>org.apache.shiro</groupId>
<artifactId>shiro-core</artifactId>
<version>1.3.2</version>
</dependency>

二.在web.xml中配置shiro的过滤器

<?xml version="1.0" encoding="UTF-8"?>
<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"> 
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath*:spring/applicationContext-*.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener> 
<filter>
<filter-name>CharacterEncodingFilter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>utf-8</param-value>
</init-param>
<init-param>
<param-name>forceEncoding</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>CharacterEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping> <servlet>
<servlet-name>springmvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>

<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring/springmvc.xml</param-value>
</init-param>
</servlet> <servlet-mapping>
<servlet-name>springmvc</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping> 
<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>
</web-app>

web.xml

注意:web.xml文件中的加载顺序为: context-param(ServletContext) -> listener-> filter -> servlet

,并且shiro的过滤器需要使用spring中配置的关于shiro的bean,所以shiro的配置不能写在springmvc的配置文件中,需要写在spring的配置文件中

三.编写shiro的配置(可以写在spring配置文件中,也可以单独一个文件)

本案例中spring配置文件名称为:applicationContext-service.xml

shiro的配置文件名称为:applicationContext-shiro.xml

dao层配置从spring配置中分离出来:applicationContext-dao.xml

在web.xml文件中引用方式为:

三.applicationContext-shiro.xml文件(shiro配置文件)

注意: shiroFilter:这个名字必须和web.xml文件中配置的过滤器的名称一致

SaasRealm:自定义数据源(领域),只要继承抽象类AuthorizingRealm,实现抽象方法即可,其中一个方法是关于登录认证的(doGetAuthenticationInfo),一个方法是权限封装的(doGetAuthorizationInfo).

将从数据库中获取到的数据进行封装(权限)或者和客户端传入的数据进行比对(登录),返回相应的封装数据和登录结果

<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop.xsd">


<bean id="shiroFilter" class="org.apache.shiro.spring.web.ShiroFilterFactoryBean">

<property name="securityManager" ref="securityManager"/>

<property name="loginUrl" value="/login.jsp"/>

<property name="unauthorizedUrl" value="/unauthorized.jsp"/>

<property name="filterChainDefinitions">
<value>
/login.jsp = anon
/css/** = anon
/img/** = anon
/plugins/** = anon
/make/** = anon
/login.do = anon
/company/list.do = perms["企业管理"]
/system/log/list.do=perms["日志管理"]
/system/module/list.do=perms["模块管理"]
/company/list.do=perms["企业管理"]
/=perms["SaaS管理"]
/cargo=perms["货运管理"]
/stat=perms["统计分析"]
/baseinfo=perms["基础信息"]
/sysadmin=perms["系统管理"]
/cargo/contract/list.do=perms["购销合同"]
/cargo/contract/print.do=perms["出货表"]
/cargo/export/contractList.do=perms["合同管理"]
/cargo/export/list.do=perms["出口报运"]
/stat/toCharts.do=perms["生产厂家销售情况"]
/stat/toCharts.do=perms["产品销售排行"]
/stat/toCharts.do=perms["系统访问压力图"]
/system/dept/list.do=perms["部门管理"]
/system/user/list.do=perms["用户管理"]
/system/role/list.do=perms["角色管理"]
/cargo/packing/list.do=perms["装箱管理"]
/cargo/shipping/list.do=perms["委托管理"]
/cargo/invoice/list.do=perms["发票管理"]
/cargo/finance/list.do=perms["财务管理"]
/sysadmin/deptAction_toview=perms["查看部门"]
/sysadmin/deptAction_tocreate=perms["新增部门"]
/sysadmin/deptAction_toupdate=perms["修改部门"]
/sysadmin/deptAction_delete=perms["删除部门"]
/** = authc
</value>
</property>
</bean> 
<bean id="saamRealm" class="com.ahd.realm.SaasRealm"/> 
<bean id="securityManager" class="org.apache.shiro.web.mgt.DefaultWebSecurityManager">
<property name="realm" ref="saamRealm"/>
</bean> 

<bean class="org.apache.shiro.spring.security.interceptor.AuthorizationAttributeSourceAdvisor">
<property name="securityManager" ref="securityManager"/>
</bean> 
<bean id="lifecycleBeanPostProcessor" class="org.apache.shiro.spring.LifecycleBeanPostProcessor"/> 
<bean class="org.springframework.aop.framework.autoproxy.DefaultAdvisorAutoProxyCreator"
depends-on="lifecycleBeanPostProcessor">
<property name="proxyTargetClass" value="true"/>
</bean> <aop:aspectj-autoproxy proxy-target-class="true"/></beans>

三.1路径匹配权限太多,不好写,不想使用注解来搞乱代码,自己编写了一个小工具类,实现拼接

package com.ahd.util;
import com.ahd.domain.system.Module;
import com.ahd.service.system.ModuleService;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import java.util.List;
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("classpath*:spring/applicationContext-*.xml")
public class realmUtil {
@Autowired
private ModuleService ms;
@Test
public void test() {
String authorization = "perms";
List<Module> all = ms.findAll();
StringBuffer sb = new StringBuffer();
for (Module module : all) {
String curl = module.getCurl();
if(curl!=null){
if (!curl.contains("?")) {
sb.append("/" + curl + "=" + authorization + "[\"" + module.getName() + "\"]\n");
}else{
String[] split = curl.split("\\?");
sb.append("/" + split[0] + "=" + authorization + "[\"" + module.getName() + "\"]\n");
}
}else{
sb.append("/" + curl + "=" + authorization + "[\"" + module.getName() + "\"]\n");
}
}
System.out.println(sb.toString());
}
}

自己编写的小工具

三.2想法

shiro对于路径匹配权限

没有好的解决方案,只能一条一条编写,

想法:编写一个工具类,动态查询数据库,拼接字符串,在spring容器加载之前写入文件(在web.xml中配置监听器)

没有好的解决方案,只能一条一条编写,

想法:编写一个工具类,动态查询数据库,拼接字符串,在spring容器加载之前写入文件(在web.xml中配置监听器)

四.自定义Realm

public class SaasRealm extends AuthorizingRealm {
@Autowired
private UserService us;
@Autowired
private ModuleService ms;
@Override
protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principalCollection) {
//将用户所有权限存入对象中
//获取登录的用户对象
User user = (User) principalCollection.getPrimaryPrincipal();
//通过查询数据库,查找该用户所具有的的权限
List<Module> moduleByUser = ms.findModuleByUser(user);
// Set<String> perms=new HashSet<>();
//创建SimpleAuthorizationInfo权限对象
SimpleAuthorizationInfo info=new SimpleAuthorizationInfo(); for (Module module : moduleByUser) {
info.addStringPermission(module.getName());
} return info;
} @Override
protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken authenticationToken) throws AuthenticationException {
UsernamePasswordToken token= (UsernamePasswordToken) authenticationToken;
//获取页面传递过来的账号密码
String username_page = token.getUsername();//email
String password_page = new String(token.getPassword()); //从数据库中查找该账号的信息
User user_db = us.findByEmail(username_page);
String password_db = user_db.getPassword(); //进行信息比较,如果密码不匹配,返回null,调用者会抛出异常
if(!password_page.equals(password_db)){
return null;
}
return new SimpleAuthenticationInfo(user_db,user_db.getPassword(),getName());
}
}

部分代码图片解释:

五.登录代码示例

@RequestMapping(value="login",name = "用户登录")
public String login(String email,String password){
//登录分析
//1.首先判断用户邮箱和密码是否为空
if(StringUtils.isEmpty(email)||StringUtils.isEmpty(password)){
request.setAttribute("error","邮箱或密码不能为空");
return "forward:/login.jsp";
}
password=new Md5Hash(password,email,1).toString();
UsernamePasswordToken token=new UsernamePasswordToken(email,password);
Subject subject = SecurityUtils.getSubject(); try {
subject.login(token);
} catch (AuthenticationException e) {
request.setAttribute("error","邮箱或密码有误");
return "forward:/login.jsp";
}
//执行到这里,证明登录成功,所以继续封装数据
//通过shiro的Session域获取user对象
User user = (User) subject.getPrincipal(); List<Module> moduleList =ms.findModuleByUser(user);//存入session
session.setAttribute("modules",moduleList); //将登录数据存入session域
session.setAttribute("loginUser",user);
return "home/main";
}

登录之后经过以上配置对于权限不需要再进行其他操作

六.注解配置

在路径对应的方法上添加注解@RequiresPermissions (“权限名称”)

七.页面标签展示

1.引入标签库:

<%@ taglib prefix="shiro" uri="http://shiro.apache.org/tags" %>

2.使用标签

<shiro:hasPermission name="删除部门">
<button type="button" class="btn btn-default" title="删除" onclick='deleteById()'><i class="fa fa-trash-o"></i> 删除</button>
</shiro:hasPermission>

八.优化

使用缓存,避免一项功能查询多次

增加了jvm负担,建议使用redis缓存

九.自定义过滤器

说明：模仿shiro现有的10个过滤器现在模仿的是perms过滤器

目的：用此配置/system/module/list.do = perms["模块管理","删除模块"]

但凡符合其中的一个权限就应该放行，但是默认的perms过滤器必须两个都有才能放行

第一步：定义一个过滤器，继承一个父类

重写方法

public class MyPermsFilter extends AuthorizationFilter {
public MyPermsFilter() {
} public boolean isAccessAllowed(ServletRequest request, ServletResponse response, Object mappedValue) throws IOException {
Subject subject = this.getSubject(request, response);
String[] perms = (String[])((String[])mappedValue);// perms = ["部门管理","删除部门"]
if (perms != null && perms.length > 0) {
for (String perm : perms) {
if (subject.isPermitted(perm)) {
return true;
}
}
return false;
} return true;
}
}

第二步：交给spring容器