当前位置: 首页 > news >正文

聊聊springboot tomcat的maxHttpFormPostSize

本文主要研究一下spring boot tomcat的maxHttpFormPostSize参数

parseParameters

tomcat-embed-core-9.0.37-sources.jar!/org/apache/catalina/connector/Request.java

    /*** Parse request parameters.*/protected void parseParameters() {parametersParsed = true;Parameters parameters = coyoteRequest.getParameters();boolean success = false;try {// Set this every time in case limit has been changed via JMXparameters.setLimit(getConnector().getMaxParameterCount());// getCharacterEncoding() may have been overridden to search for// hidden form field containing request encodingCharset charset = getCharset();boolean useBodyEncodingForURI = connector.getUseBodyEncodingForURI();parameters.setCharset(charset);if (useBodyEncodingForURI) {parameters.setQueryStringCharset(charset);}// Note: If !useBodyEncodingForURI, the query string encoding is//       that set towards the start of CoyoyeAdapter.service()parameters.handleQueryParameters();if (usingInputStream || usingReader) {success = true;return;}String contentType = getContentType();if (contentType == null) {contentType = "";}int semicolon = contentType.indexOf(';');if (semicolon >= 0) {contentType = contentType.substring(0, semicolon).trim();} else {contentType = contentType.trim();}if ("multipart/form-data".equals(contentType)) {parseParts(false);success = true;return;}if( !getConnector().isParseBodyMethod(getMethod()) ) {success = true;return;}if (!("application/x-www-form-urlencoded".equals(contentType))) {success = true;return;}int len = getContentLength();if (len > 0) {int maxPostSize = connector.getMaxPostSize();if ((maxPostSize >= 0) && (len > maxPostSize)) {Context context = getContext();if (context != null && context.getLogger().isDebugEnabled()) {context.getLogger().debug(sm.getString("coyoteRequest.postTooLarge"));}checkSwallowInput();parameters.setParseFailedReason(FailReason.POST_TOO_LARGE);return;}byte[] formData = null;if (len < CACHED_POST_LEN) {if (postData == null) {postData = new byte[CACHED_POST_LEN];}formData = postData;} else {formData = new byte[len];}try {if (readPostBody(formData, len) != len) {parameters.setParseFailedReason(FailReason.REQUEST_BODY_INCOMPLETE);return;}} catch (IOException e) {// Client disconnectContext context = getContext();if (context != null && context.getLogger().isDebugEnabled()) {context.getLogger().debug(sm.getString("coyoteRequest.parseParameters"), e);}parameters.setParseFailedReason(FailReason.CLIENT_DISCONNECT);return;}parameters.processParameters(formData, 0, len);} else if ("chunked".equalsIgnoreCase(coyoteRequest.getHeader("transfer-encoding"))) {byte[] formData = null;try {formData = readChunkedPostBody();} catch (IllegalStateException ise) {// chunkedPostTooLarge errorparameters.setParseFailedReason(FailReason.POST_TOO_LARGE);Context context = getContext();if (context != null && context.getLogger().isDebugEnabled()) {context.getLogger().debug(sm.getString("coyoteRequest.parseParameters"),ise);}return;} catch (IOException e) {// Client disconnectparameters.setParseFailedReason(FailReason.CLIENT_DISCONNECT);Context context = getContext();if (context != null && context.getLogger().isDebugEnabled()) {context.getLogger().debug(sm.getString("coyoteRequest.parseParameters"), e);}return;}if (formData != null) {parameters.processParameters(formData, 0, formData.length);}}success = true;} finally {if (!success) {parameters.setParseFailedReason(FailReason.UNKNOWN);}}}

tomcat request解析表单参数

maxPostSize

主要是下面这段

                if ((maxPostSize >= 0) && (len > maxPostSize)) {Context context = getContext();if (context != null && context.getLogger().isDebugEnabled()) {context.getLogger().debug(sm.getString("coyoteRequest.postTooLarge"));}checkSwallowInput();parameters.setParseFailedReason(FailReason.POST_TOO_LARGE);return;}

如果大于maxPostSize,则会设置FailReason.POST_TOO_LARGE,如果开启debug日志则会打印coyoteRequest.postTooLarge的内容

postTooLarge

coyoteRequest.postTooLarge=Parameters were not parsed because the size of the posted data was too big. Use the maxPostSize attribute of the connector to resolve this if the application should accept large POSTs.

400

对于spring boot来说,请求会报400,也就是参数丢失的错误,比如

org.springframework.web.bind.MissingServletRequestParameterException: Required String parameter 'arg1' is not presentat org.springframework.web.method.annotation.RequestParamMethodArgumentResolver.handleMissingValue(RequestParamMethodArgumentResolver.java:204)at org.springframework.web.method.annotation.AbstractNamedValueMethodArgumentResolver.resolveArgument(AbstractNamedValueMethodArgumentResolver.java:114)at org.springframework.web.method.support.HandlerMethodArgumentResolverComposite.resolveArgument(HandlerMethodArgumentResolverComposite.java:121)at org.springframework.web.method.support.InvocableHandlerMethod.getMethodArgumentValues(InvocableHandlerMethod.java:167)at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:134)at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:105)at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:878)at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:792)at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87)at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1040)at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:943)at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006)at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:909)at javax.servlet.http.HttpServlet.service(HttpServlet.java:652)at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883)at javax.servlet.http.HttpServlet.service(HttpServlet.java:733)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)at org.springframework.web.filter.CorsFilter.doFilterInternal(CorsFilter.java:92)at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100)at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93)at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)at org.springframework.boot.actuate.metrics.web.servlet.WebMvcMetricsFilter.doFilterInternal(WebMvcMetricsFilter.java:93)at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201)at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202)at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541)at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)at net.rakugakibox.spring.boot.logback.access.tomcat.LogbackAccessTomcatValve.invoke(LogbackAccessTomcatValve.java:91)at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:690)at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:373)at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868)at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1589)at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)at java.base/java.lang.Thread.run(Thread.java:833)

TomcatWebServerFactoryCustomizer

spring-boot-autoconfigure-2.3.3.RELEASE-sources.jar!/org/springframework/boot/autoconfigure/web/embedded/TomcatWebServerFactoryCustomizer.java

    public void customize(ConfigurableTomcatWebServerFactory factory) {ServerProperties properties = this.serverProperties;ServerProperties.Tomcat tomcatProperties = properties.getTomcat();PropertyMapper propertyMapper = PropertyMapper.get();propertyMapper.from(tomcatProperties::getBasedir).whenNonNull().to(factory::setBaseDirectory);propertyMapper.from(tomcatProperties::getBackgroundProcessorDelay).whenNonNull().as(Duration::getSeconds).as(Long::intValue).to(factory::setBackgroundProcessorDelay);customizeRemoteIpValve(factory);ServerProperties.Tomcat.Threads threadProperties = tomcatProperties.getThreads();propertyMapper.from(threadProperties::getMax).when(this::isPositive).to((maxThreads) -> customizeMaxThreads(factory, threadProperties.getMax()));propertyMapper.from(threadProperties::getMinSpare).when(this::isPositive).to((minSpareThreads) -> customizeMinThreads(factory, minSpareThreads));propertyMapper.from(this.serverProperties.getMaxHttpHeaderSize()).whenNonNull().asInt(DataSize::toBytes).when(this::isPositive).to((maxHttpHeaderSize) -> customizeMaxHttpHeaderSize(factory, maxHttpHeaderSize));propertyMapper.from(tomcatProperties::getMaxSwallowSize).whenNonNull().asInt(DataSize::toBytes).to((maxSwallowSize) -> customizeMaxSwallowSize(factory, maxSwallowSize));propertyMapper.from(tomcatProperties::getMaxHttpFormPostSize).asInt(DataSize::toBytes).when((maxHttpFormPostSize) -> maxHttpFormPostSize != 0).to((maxHttpFormPostSize) -> customizeMaxHttpFormPostSize(factory, maxHttpFormPostSize));propertyMapper.from(tomcatProperties::getAccesslog).when(ServerProperties.Tomcat.Accesslog::isEnabled).to((enabled) -> customizeAccessLog(factory));propertyMapper.from(tomcatProperties::getUriEncoding).whenNonNull().to(factory::setUriEncoding);propertyMapper.from(tomcatProperties::getConnectionTimeout).whenNonNull().to((connectionTimeout) -> customizeConnectionTimeout(factory, connectionTimeout));propertyMapper.from(tomcatProperties::getMaxConnections).when(this::isPositive).to((maxConnections) -> customizeMaxConnections(factory, maxConnections));propertyMapper.from(tomcatProperties::getAcceptCount).when(this::isPositive).to((acceptCount) -> customizeAcceptCount(factory, acceptCount));propertyMapper.from(tomcatProperties::getProcessorCache).to((processorCache) -> customizeProcessorCache(factory, processorCache));propertyMapper.from(tomcatProperties::getRelaxedPathChars).as(this::joinCharacters).whenHasText().to((relaxedChars) -> customizeRelaxedPathChars(factory, relaxedChars));propertyMapper.from(tomcatProperties::getRelaxedQueryChars).as(this::joinCharacters).whenHasText().to((relaxedChars) -> customizeRelaxedQueryChars(factory, relaxedChars));customizeStaticResources(factory);customizeErrorReportValve(properties.getError(), factory);}

customizeMaxHttpFormPostSize

    private void customizeMaxHttpFormPostSize(ConfigurableTomcatWebServerFactory factory, int maxHttpFormPostSize) {factory.addConnectorCustomizers((connector) -> connector.setMaxPostSize(maxHttpFormPostSize));}

tomcat-embed-core-9.0.37-sources.jar!/org/apache/catalina/connector/Connector.java

    /*** Set the maximum size of a POST which will be automatically* parsed by the container.** @param maxPostSize The new maximum size in bytes of a POST which will* be automatically parsed by the container*/public void setMaxPostSize(int maxPostSize) {this.maxPostSize = maxPostSize;setProperty("maxPostSize", String.valueOf(maxPostSize));}

The maximum size in bytes of the POST which will be handled by the container FORM URL parameter parsing. The limit can be disabled by setting this attribute to a value less than zero. If not specified, this attribute is set to 2097152 (2 megabytes). Note that the FailedRequestFilter can be used to reject requests that exceed this limit.

customizeMaxSwallowSize

    private void customizeMaxSwallowSize(ConfigurableTomcatWebServerFactory factory, int maxSwallowSize) {factory.addConnectorCustomizers((connector) -> {ProtocolHandler handler = connector.getProtocolHandler();if (handler instanceof AbstractHttp11Protocol) {AbstractHttp11Protocol<?> protocol = (AbstractHttp11Protocol<?>) handler;protocol.setMaxSwallowSize(maxSwallowSize);}});}

tomcat-embed-core-9.0.37-sources.jar!/org/apache/coyote/http11/AbstractHttp11Protocol.java

    /*** Maximum amount of request body to swallow.*/private int maxSwallowSize = 2 * 1024 * 1024;public int getMaxSwallowSize() { return maxSwallowSize; }public void setMaxSwallowSize(int maxSwallowSize) {this.maxSwallowSize = maxSwallowSize;}

The maximum number of request body bytes (excluding transfer encoding overhead) that will be swallowed by Tomcat for an aborted upload. An aborted upload is when Tomcat knows that the request body is going to be ignored but the client still sends it. If Tomcat does not swallow the body the client is unlikely to see the response. If not specified the default of 2097152 (2 megabytes) will be used. A value of less than zero indicates that no limit should be enforced.

小结

tomcat提供了maxPostSize及maxSwallowSize两个参数,其中maxPostSize用于限制post表单请求大小,默认2M,而maxSwallowSize用于限制aborted upload能够swallowed的大小。在springboot的2.3.3版本的话,通过server.tomcat.max-http-form-post-size来指定maxPostSize大小。

doc

  • tomcat config http

相关文章:

聊聊springboot tomcat的maxHttpFormPostSize

序 本文主要研究一下spring boot tomcat的maxHttpFormPostSize参数 parseParameters tomcat-embed-core-9.0.37-sources.jar!/org/apache/catalina/connector/Request.java /*** Parse request parameters.*/protected void parseParameters() {parametersParsed true;Para…...

java并发:synchronized锁详解

背景&#xff1a; 在java多线程当中&#xff0c;我们总有遇到过多个线程操作一个共享数据时&#xff0c;而这个最后的代码执行结果并没有按照我们的预期一样得到正确的结果。此时我们就需要让代码执行在操作共享变量时&#xff0c;要等一个线程操作完毕时&#xff0c;另一个线程…...

Unity 之NavMeshAgent 组件(导航和路径寻找的组件)

文章目录 **作用**&#xff1a;**属性和方法**&#xff1a;**用途**&#xff1a;**注意事项**&#xff1a; NavMeshAgent 是Unity引擎中用于导航和路径寻找的组件。它可以使游戏对象在场景中自动找到可行走的路径&#xff0c;并在避免障碍物的情况下移动到目标位置。 以下是关于…...

装箱和拆箱

1. 概念 装箱 将值类型转换成等价的引用类型 装箱的步骤 拆箱 将一个已装箱的引用类型转换为值类型&#xff0c;拆箱操作需要声明拆箱后转换的类型 拆箱的步骤 1&#xff09;获取已装箱的对象的地址 2&#xff09;将值从堆上的对象中复制到堆栈上的值变量中 2. 总结 装箱和拆箱…...

等保测评--安全通信网络--测评方法

安全子类--安全架构 a)应保证网络设备的业务处理能力满足业务高峰期需要; 一、测评对象 路由器、交换机、无线接入设备和防火墙等提供网络通信功能的设备或相关组件 二、测评实施 1) 应核查业务高峰时期一段时间内主要网络设备(一般包括核心交换机、汇聚交换机、边界路…...

统计学补充概念11-tsne

概念 t-SNE&#xff08;t-distributed Stochastic Neighbor Embedding&#xff09;是一种非线性降维技术&#xff0c;用于可视化高维数据在低维空间中的分布。与主成分分析&#xff08;PCA&#xff09;等线性降维方法不同&#xff0c;t-SNE专注于保留数据点之间的局部相似性关…...

Linux_11_系统启动和内核管理

目录 1 C entOS 6 的启动管理1.1 Linux 组成1.2 内核设计流派1.3 CentOS 6启动流程1.3.1 CentOs 6 启动流程1.3.1 硬件启动POST1.3.2 bootloader 启动/引导加载器1.3.2.1 grub 功能和组成1.3.2.2 CentOS 6 grub 安装1.3.2.3 grub legacy 管理 1.3.3 加载 kernel1.3.4 init 初始…...

【从零学习python 】65. Python正则表达式修饰符及其应用详解

文章目录 正则表达式修饰符进阶案例 正则表达式修饰符 修饰符描述re.I使匹配对大小写不敏感re.M多行匹配&#xff0c;影响 ^ 和 $re.S使 . 匹配包括换行在内的所有字符 示例代码如下&#xff1a; import reprint(re.search(rL, hello)) # None# 不区分大小写&#xff0c;可…...

QA2

1. import shutil 是什么意思&#xff1f; 在 Python 中&#xff0c;import shutil 是导入标准库 shutil 的语句。shutil 提供了一些用于复制文件和文件夹、移动文件和文件夹、以及执行其他文件操作的函数。 通过导入 shutil&#xff0c;你可以使用其中的函数来处理文件和文件…...

centos7卸载docker

要在CentOS 7上干净地卸载Docker&#xff0c;可以执行以下步骤&#xff1a; 停止Docker服务&#xff1a; sudo systemctl stop docker移除所有Docker容器和镜像。这将删除所有相关数据&#xff0c;包括容器、镜像以及存储卷等。请注意&#xff0c;这将不可逆转地删除数据。 …...

【计算机视觉】递归神经网络在图像超分的应用Deep Recursive Residual Network for Image Super Resolution

DRCN: Deeply-Recursive Convolutional Network for Image Super-Resolution 总结 这篇文章是第一次将之前已有的递归神经网络(Recursive Neural Network)结构应用在图像超分辨率上。为了增加网络的感受野&#xff0c;提高网络性能&#xff0c;引入了深度递归神经网络&#x…...

Centos 7 安装系列(8):openGauss 3.0.0

安装依赖包&#xff1a; yum -y install libaio-devel flex bison ncurses-devel glibc-devel patch redhat-lsb-core readline-devel openssl-devel sqlite-devel libnsl 安装插件&#xff1a; yum install -y bzip2 net-tools为什么要安装这两个&#xff1f; 安装bzip2 是…...

NOIP真题讲解 传球游戏 接水问题

传球游戏 说明 上体育课的时候&#xff0c;小蛮的老师经常带着同学们一起做游戏。这次&#xff0c;老师带着同学们一起做传球游戏。 游戏规则是这样的&#xff1a;n个同学站成一个圆圈&#xff0c;其中的一个同学手里拿着一个球&#xff0c;当老师吹哨子时开始传球&#xff0c;…...

《论文阅读18》 SSD: Single Shot MultiBox Detector

一、论文 研究领域&#xff1a; 2D目标检测论文&#xff1a;SSD: Single Shot MultiBox Detector ECCV 2016 数据集 论文链接论文github 二、论文概要 SSD网络是作者Wei Liu在ECCV 2016上发表的论文。对于输入尺寸300x300的网络 使用Nvidia Titan X在VOC 2007测试集上达到74…...

NOIP2016普及组第四题 魔法阵

魔法阵 题目描述 六十年一次的魔法战争就要开始了&#xff0c;大魔法师准备从附近的魔法场中汲取魔法能量。 大魔法师有m个魔法物品&#xff0c;编号分别为1,2,…,m。每个物品具有一个魔法值&#xff0c;我们用Xi表示编号为i的物品的魔法值。每个魔法值Xi是不超过n的正整数&…...

uniapp-滑块验证组件wo-slider

wo-slider是一款支持高度自定义的滑块验证组件&#xff0c;采用uniapp-vue2编写 采用touchstart、touchmove、touchend事件实现的滑块组件,支持H5、微信小程序&#xff08;其他小程序未试过&#xff0c;可自行尝试&#xff09; 可到插件市场下载尝试&#xff1a; https://ext.…...

NPM 管理组织成员

目录 1、向组织添加成员 1.1 邀请成员加入您的组织 1.2 撤销组织邀请 2、接收或拒接组织邀请 2.1 接收组织邀请 2.2 拒绝组织邀请 3、组织角色和权限 4、管理组织权限 5、从组织中删除成员 1、向组织添加成员 作为组织所有者&#xff0c;您可以将其他npm用户添加到…...

设计模式(3)抽象工厂模式

一、概述&#xff1a; 1、提供一个创建一系列相关或相互依赖对象的接口&#xff0c;而无须指定它们具体的类。 2、结构图&#xff1a; 3、举例代码&#xff1a; &#xff08;1&#xff09; 实体&#xff1a; public interface IUser {public void insert(User user);public…...

【C++】早绑定、析构与多态 | 一道关于多态的选择题记录

今天在和群友聊天的时候看到了一道很坑的题目&#xff0c;分享给大家 1.看题&#xff01; 先来看看题目 struct Dad { public:Dad(){ echo();}~Dad(){ echo();}virtual void echo() {cout << "DAD ";} };struct Son:Dad { public:void echo() const override…...

mac下安装tomcat

1. 官网下载Apache Tomcat - Apache Tomcat 9 Software Downloads 2. 授权bin目录下所有.sh文件权限sudo chmod 755 *.sh 3. 启动程序(后台运行) sudo sh ./startup.sh 4. 在当前窗口启动程序&#xff0c;随时看到日志sudo sh ./catalina.sh run 5. 关闭程序 sudo sh ./shu…...

Linux应用开发之网络套接字编程(实例篇)

服务端与客户端单连接 服务端代码 #include <sys/socket.h> #include <sys/types.h> #include <netinet/in.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <arpa/inet.h> #include <pthread.h> …...

地震勘探——干扰波识别、井中地震时距曲线特点

目录 干扰波识别反射波地震勘探的干扰波 井中地震时距曲线特点 干扰波识别 有效波&#xff1a;可以用来解决所提出的地质任务的波&#xff1b;干扰波&#xff1a;所有妨碍辨认、追踪有效波的其他波。 地震勘探中&#xff0c;有效波和干扰波是相对的。例如&#xff0c;在反射波…...

Cursor实现用excel数据填充word模版的方法

cursor主页&#xff1a;https://www.cursor.com/ 任务目标&#xff1a;把excel格式的数据里的单元格&#xff0c;按照某一个固定模版填充到word中 文章目录 注意事项逐步生成程序1. 确定格式2. 调试程序 注意事项 直接给一个excel文件和最终呈现的word文件的示例&#xff0c;…...

1.3 VSCode安装与环境配置

进入网址Visual Studio Code - Code Editing. Redefined下载.deb文件&#xff0c;然后打开终端&#xff0c;进入下载文件夹&#xff0c;键入命令 sudo dpkg -i code_1.100.3-1748872405_amd64.deb 在终端键入命令code即启动vscode 需要安装插件列表 1.Chinese简化 2.ros …...

如何在最短时间内提升打ctf(web)的水平?

刚刚刷完2遍 bugku 的 web 题&#xff0c;前来答题。 每个人对刷题理解是不同&#xff0c;有的人是看了writeup就等于刷了&#xff0c;有的人是收藏了writeup就等于刷了&#xff0c;有的人是跟着writeup做了一遍就等于刷了&#xff0c;还有的人是独立思考做了一遍就等于刷了。…...

基于matlab策略迭代和值迭代法的动态规划

经典的基于策略迭代和值迭代法的动态规划matlab代码&#xff0c;实现机器人的最优运输 Dynamic-Programming-master/Environment.pdf , 104724 Dynamic-Programming-master/README.md , 506 Dynamic-Programming-master/generalizedPolicyIteration.m , 1970 Dynamic-Programm…...

Web 架构之 CDN 加速原理与落地实践

文章目录 一、思维导图二、正文内容&#xff08;一&#xff09;CDN 基础概念1. 定义2. 组成部分 &#xff08;二&#xff09;CDN 加速原理1. 请求路由2. 内容缓存3. 内容更新 &#xff08;三&#xff09;CDN 落地实践1. 选择 CDN 服务商2. 配置 CDN3. 集成到 Web 架构 &#xf…...

力扣-35.搜索插入位置

题目描述 给定一个排序数组和一个目标值&#xff0c;在数组中找到目标值&#xff0c;并返回其索引。如果目标值不存在于数组中&#xff0c;返回它将会被按顺序插入的位置。 请必须使用时间复杂度为 O(log n) 的算法。 class Solution {public int searchInsert(int[] nums, …...

基于IDIG-GAN的小样本电机轴承故障诊断

目录 🔍 核心问题 一、IDIG-GAN模型原理 1. 整体架构 2. 核心创新点 (1) ​梯度归一化(Gradient Normalization)​​ (2) ​判别器梯度间隙正则化(Discriminator Gradient Gap Regularization)​​ (3) ​自注意力机制(Self-Attention)​​ 3. 完整损失函数 二…...

STM32HAL库USART源代码解析及应用

STM32HAL库USART源代码解析 前言STM32CubeIDE配置串口USART和UART的选择使用模式参数设置GPIO配置DMA配置中断配置硬件流控制使能生成代码解析和使用方法串口初始化__UART_HandleTypeDef结构体浅析HAL库代码实际使用方法使用轮询方式发送使用轮询方式接收使用中断方式发送使用中…...