【异常（待解决）】org.apache.http.NoHttpResponseException: api.weixin.qq.com:443 failed to respond
一、记录下异常堆栈信息
-- ::58.246 [http-nio--exec-] ERROR weixin.popular.client.LocalHttpClient - execute error
org.apache.http.NoHttpResponseException: api.weixin.qq.com: failed to respond
at org.apache.http.impl.conn.DefaultHttpResponseParser.parseHead(DefaultHttpResponseParser.java:)
at org.apache.http.impl.conn.DefaultHttpResponseParser.parseHead(DefaultHttpResponseParser.java:)
at org.apache.http.impl.io.AbstractMessageParser.parse(AbstractMessageParser.java:)
at org.apache.http.impl.DefaultBHttpClientConnection.receiveResponseHeader(DefaultBHttpClientConnection.java:)
at org.apache.http.impl.conn.CPoolProxy.receiveResponseHeader(CPoolProxy.java:)
at org.apache.http.protocol.HttpRequestExecutor.doReceiveResponse(HttpRequestExecutor.java:)
at org.apache.http.protocol.HttpRequestExecutor.execute(HttpRequestExecutor.java:)
at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:)
at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:)
at org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:)
at org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:)
at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:)
at weixin.popular.client.LocalHttpClient.execute(LocalHttpClient.java:)
at weixin.popular.client.LocalHttpClient.executeJsonResult(LocalHttpClient.java:)
at weixin.popular.api.MessageAPI.messageCustomSend(MessageAPI.java:)
at weixin.popular.api.MessageAPI.messageCustomSend(MessageAPI.java:)
at com.xinchan.xcauto.merchants.common.service.local.WechatManager.sendWechantTextMessageToOa(WechatManager.java:)
at com.xinchan.xcauto.merchants.common.service.impl.FeignServiceImpl.sendOpenIdMessage(FeignServiceImpl.java:)
at com.xinchan.xcauto.merchants.common.service.impl.FeignServiceImpl.sendCouponMassage(FeignServiceImpl.java:)
at com.xinchan.xcauto.merchants.common.service.impl.FeignServiceImpl$$FastClassBySpringCGLIB$$e3661481.invoke(<generated>)
at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:)
at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:)
at com.xinchan.xcauto.merchants.common.service.impl.FeignServiceImpl$$EnhancerBySpringCGLIB$$2747d965.sendCouponMassage(<generated>)
at com.xinchan.xcauto.merchants.common.controller.FeignController.sendCouponMassage(FeignController.java:)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:)
at java.lang.reflect.Method.invoke(Method.java:)
at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:)
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:)
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:)
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:)
at org.springframework.boot.actuate.metrics.web.servlet.WebMvcMetricsFilter.filterAndRecordMetrics(WebMvcMetricsFilter.java:)
at org.springframework.boot.actuate.metrics.web.servlet.WebMvcMetricsFilter.filterAndRecordMetrics(WebMvcMetricsFilter.java:)
at org.springframework.boot.actuate.metrics.web.servlet.WebMvcMetricsFilter.doFilterInternal(WebMvcMetricsFilter.java:)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:)
at org.springframework.boot.actuate.web.trace.servlet.HttpTraceFilter.doFilterInternal(HttpTraceFilter.java:)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:)
at com.xinchan.xcauto.core.config.filter.HttpServletRequestReplacedFilter.doFilter(HttpServletRequestReplacedFilter.java:)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:)
at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:)
at org.springframework.web.filter.HttpPutFormContentFilter.doFilterInternal(HttpPutFormContentFilter.java:)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:)
at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:)
at org.springframework.session.web.http.SessionRepositoryFilter.doFilterInternal(SessionRepositoryFilter.java:)
at org.springframework.session.web.http.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:)
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:)
at java.lang.Thread.run(Thread.java:)
-- ::58.247 [http-nio--exec-] ERROR c.x.xcauto.common.controller.BaseControllerAdvice - 检测到未捕捉异常：IP:172.21.0.1 invoke url:http://172.17.244.191:9850/common/sendCouponMassage/v1 Exception:public class java.lang.NullPointerException
java.lang.NullPointerException: null
at com.xinchan.xcauto.merchants.common.service.local.WechatManager.sendWechantTextMessageToOa(WechatManager.java:)
at com.xinchan.xcauto.merchants.common.service.impl.FeignServiceImpl.sendOpenIdMessage(FeignServiceImpl.java:)
at com.xinchan.xcauto.merchants.common.service.impl.FeignServiceImpl.sendCouponMassage(FeignServiceImpl.java:)
at com.xinchan.xcauto.merchants.common.service.impl.FeignServiceImpl$$FastClassBySpringCGLIB$$e3661481.invoke(<generated>)
at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:)
at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:)
at com.xinchan.xcauto.merchants.common.service.impl.FeignServiceImpl$$EnhancerBySpringCGLIB$$2747d965.sendCouponMassage(<generated>)
at com.xinchan.xcauto.merchants.common.controller.FeignController.sendCouponMassage(FeignController.java:)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:)
at java.lang.reflect.Method.invoke(Method.java:)
at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:)
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:)
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:)
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:)
at org.springframework.boot.actuate.metrics.web.servlet.WebMvcMetricsFilter.filterAndRecordMetrics(WebMvcMetricsFilter.java:)
at org.springframework.boot.actuate.metrics.web.servlet.WebMvcMetricsFilter.filterAndRecordMetrics(WebMvcMetricsFilter.java:)
at org.springframework.boot.actuate.metrics.web.servlet.WebMvcMetricsFilter.doFilterInternal(WebMvcMetricsFilter.java:)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:)
at org.springframework.boot.actuate.web.trace.servlet.HttpTraceFilter.doFilterInternal(HttpTraceFilter.java:)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:)
at com.xinchan.xcauto.core.config.filter.HttpServletRequestReplacedFilter.doFilter(HttpServletRequestReplacedFilter.java:)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:)
at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:)
at org.springframework.web.filter.HttpPutFormContentFilter.doFilterInternal(HttpPutFormContentFilter.java:)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:)
at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:)
at org.springframework.session.web.http.SessionRepositoryFilter.doFilterInternal(SessionRepositoryFilter.java:)
at org.springframework.session.web.http.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:)
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:)
at java.lang.Thread.run(Thread.java:)
二、原因分析
1.官网解释是
org.apache.commons.httpclient.NoHttpResponseException： In some circumstances, usually when under heavy load, the web server may be able to receive requests but unable to process them.
A lack of sufficient resources like worker threads is a good example.
This may cause the server to drop the connection to the client without giving any response.
HttpClient throws NoHttpResponseException when it encounters such a condition.
In most cases it is safe to retry a method that failed with NoHttpResponseException.
在某些情况下，通常是在高负载下，web服务器可能能够接收请求，但无法处理它们。缺乏足够的资源(比如工作线程)就是一个很好的例子。这可能导致服务器在不给出任何响应的情况下断开到客户机的连接。HttpClient在遇到这种情况时抛出NoHttpResponseException。在大多数情况下，重试使用NoHttpResponseException失败的方法是安全的。
官网给出的解决办法就是：重试调用失败的方法
2.自我验证及复现该问题到底什么情况下会发生（待定）
【异常（待解决）】org.apache.http.NoHttpResponseException: api.weixin.qq.com:443 failed to respond的更多相关文章
- getaddrinfo ENOTFOUND https://api.weixin.qq.com https://api.weixin.qq.com:443
原因:这是由于你当前的主机不能够连接到你填写的url. 解决方法: 先ping api.weixin.qq.com ping不通的话,就是外网访问的问题. 开通外网访问就可以了.
- [Jmeter并发报错解决方案]org.apache.http.NoHttpResponseException: 10.0.4.147:8000 failed to respond
背景:公司模型框架是Nginx+uwsgi+Django+nginx,一开始使用Jmeter进行高并发请求测试,发现成功率只有50%,换用postman,成功率100%,代码进行高并发一样不会报错. ...
- org.apache.http.NoHttpResponseException: XX.XX.XX.XX:80 failed to respond
解决: Finally I fix the issue and it is caused by buffer size. By default, buffer size of httpclient i ...
- 微信小程序模板发送,openid获取，以及api.weixin.qq.com不在合法域名内解决方法
主要内容在标题三,老手可直接跳到标题三. 本文主要解决个人开发者模板消息发送的问题(没有服务器,不能操作服务器的情况) 针对api.weinxin.qq.com不在以下合法域名列表内的问题提出的解决方 ...
- couldn't resolve host api.weixin.qq.com
1.代理服务器突然出现 couldn't resolve host api.weixin.qq.com 不知原因 2.重启nginx无效-----代码肯定没有动过(之前出现过,过了一天恢复) 3.防火 ...
- 微信小程序获取二维码（直接上代码）https://api.weixin.qq.com/cgi-bin/wxaapp/createwxaqrcode?access_token=ACCESS_TOKEN
应为是直接返回二进制数据所有与其他接口些许差别,希望能帮助现在的你! 谢谢!!! /** * 37.微信二维码生成 */ public String getWeiXinCourseMap() { ...
- Java企业微信开发_11_异常：java.net.UnknownHostException: qyapi.weixin.qq.com
原因: 网络原因导致 dns解析失败. 解决方案: 方案一 : 1.查看你的服务器能否ping通外网,不过不行说明你的网络出了问题. (我的情况是客户的应用服务器只能内网访问,所以是网络出问题 ...
- org/apache/commons/pool/impl/GenericObjectPool异常的解决办法
org/apache/commons/pool/impl/GenericObjectPool异常的解决办法 webwork+spring+hibernate框架的集成, 一启动Tomcat服务器就出了 ...
- Jmeter返回org.apache.http.NoHttpResponseException: The target server failed to respond解决办法
1.问题:这段时间使用jmeter压测时(300个请求,持续压300s,加速期10s),压力平稳时偶然错误,部分请求失败事务报错信息如下 org.apache.http.NoHttpResponseE ...
随机推荐
- Docker网络模式介绍
一.概述 docker的网络驱动有很多种方式,按照docker官网给出的网络解决方案就有6种,分别是:bridge.host.overlay.macvlan.none.Network plugins, ...
- Java8 lambda表达式10个示例<转>
例1.用lambda表达式实现Runnable 我开始使用Java 8时,首先做的就是使用lambda表达式替换匿名类,而实现Runnable接口是匿名类的最好示例.看一下Java 8之前的runna ...
- 使用Python读写文件进行图片复制（文件复制）
发现Python在读二进制文件时,可以生成一个新的文件,操作还很简单,如下:对一个jpeg的文件进行复制 fp1=open("e:\\1.jpeg","rb") ...
- Flask自动刷新前端页面（方便调试）livereload
是不是每次调整模板文件,就要停止flask服务器,重启flask服务器,再去浏览器刷新页面? 有没有办法自动完成这3步呢? 安装livereload即可, 仅仅把app.run() 改为下面的例子就可 ...
- WinForm自动记录从上次关闭位置启动窗体
次功能主要是通过在注册表中读写窗体的Location属性来实现的.在窗体关闭前处理窗体的FormClosed事件,将窗体的Location属性值写入注册表,然后在窗体的Load事件中从注册表中读取保存 ...
- Vue生命周期 以及应用场景
首先一张官方图 <!DOCTYPE html> <html lang="en"> <head> <meta charset="U ...
- html5传感器
html5传感器(注意苹果和安卓方向是相反的 回调函数触发的速度苹果要快很多 设置坐标不要设置在回调函数里)以下是代码<pre><!DOCTYPE html><html ...
- BJFU-217-基于链式存储结构的图书信息表的逆序存储
这道题可以用头插法创建列表,然后正常输出: #include<stdio.h> #include<stdlib.h> #define MAX 100 typedef struc ...
- Linux基础(10)AIO项目设计与POSIX文件操作和目录管理
实现fast-cp :拷贝文件到目标对象 Linux的七种文件类型 :https://blog.csdn.net/linkvivi/article/details/79834143 ls -al :h ...
- python_并发与通信
独立的进程内存空间与共享的服务器进程空间 知识点一: 进程间通信的限制 进程是独立的,互不干扰的独立内存空间我们想不能修改变量但是,深层次问题是,这个进程与那个进程完全失去了联系 import mul ...