Spring security用户URL权限之FilterSecurityInterceptor
总:
/*
* Copyright 2004, 2005, 2006 Acegi Technology Pty Limited
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.security.web.access.intercept;
import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import org.springframework.security.access.SecurityMetadataSource;
import org.springframework.security.access.intercept.AbstractSecurityInterceptor;
import org.springframework.security.access.intercept.InterceptorStatusToken;
import org.springframework.security.web.FilterInvocation;
/**
* Performs security handling of HTTP resources via a filter implementation.
* 通过筛选器实现对HTTP资源的安全处理。
* <p>
* The <code>SecurityMetadataSource</code> required by this security interceptor is of
* type {@link FilterInvocationSecurityMetadataSource}.
* <p>
*安全拦截器所需的SecurityMetadataSource类型是FilterInvocationSecurityMetadataSource
*
* Refer to {@link AbstractSecurityInterceptor} for details on the workflow.
* </p>
*
* @author Ben Alex
* @author Rob Winch
*/
public class FilterSecurityInterceptor extends AbstractSecurityInterceptor implements
Filter {
// ~ Static fields/initializers
// =====================================================================================
private static final String FILTER_APPLIED = "__spring_security_filterSecurityInterceptor_filterApplied";
// ~ Instance fields
// ================================================================================================
/**
*securityMetadataSource 中包含了一个HashMap,map中保存了用户请求的Http.Method和相应的URL地址
*例如在Spring boot中,可能是如下的配置,参考图1
*securityMetadataSource中的内容,参考图2
*/
private FilterInvocationSecurityMetadataSource securityMetadataSource;
private boolean observeOncePerRequest = true;
// ~ Methods
// ========================================================================================================
/**
* Not used (we rely on IoC container lifecycle services instead)
*
* @param arg0 ignored
*
* @throws ServletException never thrown
*/
public void init(FilterConfig arg0) throws ServletException {
}
/**
* Not used (we rely on IoC container lifecycle services instead)
*/
public void destroy() {
}
/**
* Method that is actually called by the filter chain. Simply delegates to the
* {@link #invoke(FilterInvocation)} method.
*
* @param request the servlet request
* @param response the servlet response
* @param chain the filter chain
*
* @throws IOException if the filter chain fails
* @throws ServletException if the filter chain fails
*
*
*通过责任链式调用,执行doFilter方法
*FilterInvocation中保存了filter相关的信息,比如request,response,chain
*通过invoke方法处理具体的url过滤
*/
public void doFilter(ServletRequest request, ServletResponse response,
FilterChain chain) throws IOException, ServletException {
FilterInvocation fi = new FilterInvocation(request, response, chain);
invoke(fi);
}
public FilterInvocationSecurityMetadataSource getSecurityMetadataSource() {
return this.securityMetadataSource;
}
public SecurityMetadataSource obtainSecurityMetadataSource() {
return this.securityMetadataSource;
}
public void setSecurityMetadataSource(FilterInvocationSecurityMetadataSource newSource) {
this.securityMetadataSource = newSource;
}
public Class<?> getSecureObjectClass() {
return FilterInvocation.class;
}
public void invoke(FilterInvocation fi) throws IOException, ServletException {
//获取当前http请求的地址,比如说“/login”
if ((fi.getRequest() != null)
&& (fi.getRequest().getAttribute(FILTER_APPLIED) != null)
&& observeOncePerRequest) {
// filter already applied to this request and user wants us to observe
// once-per-request handling, so don't re-do security checking
fi.getChain().doFilter(fi.getRequest(), fi.getResponse());
}
else {
// first time this request being called, so perform security checking
if (fi.getRequest() != null) {
fi.getRequest().setAttribute(FILTER_APPLIED, Boolean.TRUE);
}
//这里做主要URL比对,将当前URL与securityMetadataSource(我们自己配置)中的URL过滤条件进行比对
//首先判断当前URL是permit的还是需要验证的
//若需要验证,尝试加载保存在SecurityContextHolder.getContext()中的已登录信息
//调用AbstractSecurityInterceptor中的AccessDecisionManager对象的decide方法
//如果对于配置中需要登录才可访问的URL,已经查找到登录信息,则执行下一个Filter
InterceptorStatusToken token = super.beforeInvocation(fi);
try {
fi.getChain().doFilter(fi.getRequest(), fi.getResponse());
}
finally {
super.finallyInvocation(token);
}
super.afterInvocation(token, null);
}
}
/**
* Indicates whether once-per-request handling will be observed. By default this is
* <code>true</code>, meaning the <code>FilterSecurityInterceptor</code> will only
* execute once-per-request. Sometimes users may wish it to execute more than once per
* request, such as when JSP forwards are being used and filter security is desired on
* each included fragment of the HTTP request.
*
* @return <code>true</code> (the default) if once-per-request is honoured, otherwise
* <code>false</code> if <code>FilterSecurityInterceptor</code> will enforce
* authorizations for each and every fragment of the HTTP request.
*/
public boolean isObserveOncePerRequest() {
return observeOncePerRequest;
}
public void setObserveOncePerRequest(boolean observeOncePerRequest) {
this.observeOncePerRequest = observeOncePerRequest;
}
}
Spring security用户URL权限之FilterSecurityInterceptor的更多相关文章
- Spring Security 动态url权限控制(三)
一.前言 本篇文章将讲述Spring Security 动态分配url权限,未登录权限控制,登录过后根据登录用户角色授予访问url权限 基本环境 spring-boot 2.1.8 mybatis-p ...
- Spring Security实现RBAC权限管理
Spring Security实现RBAC权限管理 一.简介 在企业应用中,认证和授权是非常重要的一部分内容,业界最出名的两个框架就是大名鼎鼎的 Shiro和Spring Security.由于Spr ...
- 登陆模块,这个是很重要的模块,有shiro和spring security专门的权限认证框架
登陆模块,这个是很重要的模块,有shiro和spring security专门的权限认证框架
- Spring Security 基于URL的权限判断
1. FilterSecurityInterceptor 源码阅读 org.springframework.security.web.access.intercept.FilterSecurityI ...
- Spring security 用户,角色,权限,资源
转自:http://blog.csdn.net/wybqq/article/details/52940194 关于Spring security对用户请求的处理过程 体现在这两个过程的体现. 关于用户 ...
- spring security 登录、权限管理配置
登录流程 1)容器启动(MySecurityMetadataSource:loadResourceDefine加载系统资源与权限列表) 2)用户发出请求 3)过滤器拦截(MySecurityFil ...
- 别再让你的微服务裸奔了,基于 Spring Session & Spring Security 微服务权限控制
微服务架构 网关:路由用户请求到指定服务,转发前端 Cookie 中包含的 Session 信息: 用户服务:用户登录认证(Authentication),用户授权(Authority),用户管理(R ...
- Spring Security 自定义 登陆 权限验证
转载于:https://www.jianshu.com/p/6b8fb59b614b 项目简介 基于Spring Cloud 的项目,Spring Cloud是在Spring Boot上搭建的所以按照 ...
- 获取spring security用户相关信息
在JSP中获得 使用spring security的标签库 在页面中引入标签 <%@ taglib prefix="sec" uri="http://www.spr ...
随机推荐
- php手册常用的函数
<?php ************************************************************/ header("Content-type:tex ...
- reactjs scrollTop
问题1: 单页应用开发时,当在A页面滚动滚动条后,点击进入B页面,滚动条保持在A页面的滚动位置. 目标: 同级路由切换时,滚动条回滚到页面顶端. 解决方案: //在componentDidMount周 ...
- day38 17-Spring的Bean的属性注入:注解方式
这个类已经可以由Spring控制反转了,那么属性呢?属性分为普通属性和对象属性两部分. JSR是一个组织,和W3C一样是定义一些标准的.它里面也定义了一歌注解,Spring对这个注解也是支持的.其实这 ...
- python 正则表达式常用操作符
- PHP7捕获错误异常方法
这种 Error 异常可以像 Exception 异常一样被第一个匹配的 try / catch 块所捕获.如果没有匹配的 catch 块,则调用异常处理函数(事先通过 set_exception_h ...
- 浅谈Android开机启动速度优化(含应用程序启动速度优化)
众所周知Android开机启动速度较慢,于是如何加快启动速度便成为一个值得讨论的问题. 在查阅过许多资料后(特别是Google Group的android-platform),我整理总结出下面几点基本 ...
- Python比较有用的小语法
额,这是在Codeforces做题的时候从Virtual judge那儿学的 #ord()内置函数,将单个字符变为int#chr()内置函数,将int变为单个字符# for : else ( 或 wh ...
- Cannot read property 'appendChild' of null
1.js报错解决办法 这个一般是你获取的节点不存在引起的. 可能出现这种情况的原因:你获取这节点时,节点还没加载,例如:你的JS写在head里面,取body里面的某一节点,这时候是取不到的.这种情况的 ...
- idea导入gradle项目后,找不到右边gradle窗口
解决方案:关闭当前项目idea,随便打开个其他的项目 选择你刚刚的gradle项目 一定要选择你的gradle文件,然后OK就行了..剩下的按照指示打开就会显示gradle右边窗了 原文弟子:http ...
- Java练习 SDUT-3349_答答租车系统(面向对象综合练习)
答答租车系统(面向对象综合练习) Time Limit: 1000 ms Memory Limit: 65536 KiB Problem Description 各位面向对象的小伙伴们,在学习了面向对 ...