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      微信支付,apache-commons InputStream input = request.getInputStream(); String content = IOUtils.toString(input); Map<String, String> params = WXPayUtil.xmlToMap(content);   回调地址中签名失败:isPayResultNotifySignatureValid,返回false 但是isResponseSignatureValid,返回true isPayResultNotifySignatureV ...
使用开源google.zxing 依赖jar包:core-3.3.1.jar,javase-3.3.1.jar   http://mvnrepository.com/artifact/com.google.zxing/core/3.3.1 http://mvnrepository.com/artifact/com.google.zxing/javase/3.3.1   public class QRCodeUtil { /** * 生成二维码 * @param outputStream * @param content * @param size ...
     转载   //--------------------------这个页面是否在当前屏幕显示 function isShowing(){ var hiddenProperty = 'hidden' in document ? 'hidden' : 'webkitHidden' in document ? 'webkitHidden' : 'mozHidden' in document ? 'mozHidden' : null; var visibilityChangeEvent = h ...
       tomcat的server.xml中docBase必须是绝对地址(如下错误),否则会引起多个session,两次执行定时器的问题。     <Context path="" docBase="hello" debug="0" reloadable="false" />        
  转:https://www.cnblogs.com/skyblue/p/3296350.html http://www.quartz-scheduler.org/api/previous_versions/2.0.2/org/quartz/CronTrigger.html   The public interface for inspecting settings specific to a CronTrigger, . which is used to fire a Job at given moments in time, defined with Unix 'cron-li ...
    参考:https://www.apieye.com/674.html   $.getScript()调用某些门户网站提供的ip地址、地区、天气等需要客户浏览器访问的js接口时,https协议无法调用http的js接口   解决方案: (去掉http:) 如: <script src="http://code.jquery.com/jquery-1.11.0.min.js"></script>  改为 <script src="//code.jquery.com/jquery-1.11.0.min.js&q ...
    <%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> <% String path = request.getContextPath(); String basePath = request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort() + pat ...
  页面跳转时才会退出,要主动退出,需要js的定时心跳包   //userid=httpsession public static Map<Integer, HttpSession> USERID_SESSIONS = new ConcurrentHashMap<Integer, HttpSession>();     public static void addLoginUser(HttpServletRequest request,Map<String, Object> user){ //退出之前的session ...

webrtc

  WebRTC is a free, open project that provides browsers and mobile applications with Real-Time Communications (RTC) capabilities via simple APIs. The WebRTC components have been optimized to best serve this purpose. Our mission: To enable rich, high-quality RTC applications to be developed for the ...
  Tomcat SSL配置 Connector attribute SSLCertificateFile must be defined when using SSL with APR解决    protocol的值由"HTTP/1.1"改为"org.apache.coyote.http11.Http11Protocol" <Connector port="8443" protocol="org.apache.coyote.http11.Http11Protocol" SSLEnabled=" ...
  转自:http://blog.csdn.net/liu857279611/article/details/70157012   package me.gacl.websocket; import java.io.IOException; import java.util.concurrent.CopyOnWriteArraySet; import javax.websocket.*; import javax.websocket.server.ServerEndpoint; /** * @ServerEndpoint 注解是一个类层次的注解,它的功能主要是将 ...
  http://nginx.org/en/download.html 下载稳定版   解压运行nginx.exe(闪一下就没有了,并没有打开命令行窗口)   任务管理器里面会有两个nginx.exe   打开http://127.0.0.1       修改conf/nginx.conf,proxy_pass的url后面要加/(不加不是根目录)      server_name localhost:8080; location / { #root html; #in ...
  logback <?xml version="1.0" encoding="UTF-8"?> <configuration debug="false" scan="true" scanPeriod="1 seconds"> <contextName>logback</contextName> <!-- <property name="log.path" value=" ...
  pom.xml   <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd"> <modelVersion>4.0.0</modelVersion ...
JSP拿不到属性值,显示${name},而不是hello字符串,因为jsp,servlet版本问题 两种解决方式: 1.在JSP页面的上方加入一个标签,开启EL表达式  <%@ page isELIgnored="false"%>    2.在web.xml中更改引用,使用servlet3.1.0版本 <web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-inst ...
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