• JavaWeb. Use of El and JSTL


    Foreword: in the last article, we talked about El expressions and JSTL tags. In this article, we use el and JSTL to translate <% = XX in the previous shopping cart code XX% > code substitution. First, you need to guide the package, which I don’t need to talk about, and then you need to […]

  • Handle java.util.map and nested list in JSTL el


    Specify the key in square brackets and return the corresponding value as the value of the expression. For example, the expression ${map [‘key ‘]} returns the value associated with the “key” key in the map referenced by the map identifier.When the value of the expression in the items attribute of foreach is java.util.map, the type […]

  • Solve the problem that El is not supported in JSP development


    The problem lies in the web.xml declaration when building a web project.The web.xml declaration part is generally divided into the following versions of XSD,web-app_2_2.dtd web-app_2_3.dtd web-app_2_4.xsd web-app_2_5.xsd List the web.xml declaration of each version in more detail, as follows:web-app_2_2.dtd <?xml version=”1.0″ encoding=”UTF-8″?> <!DOCTYPE web-app PUBLIC “-//Sun Microsystems, Inc.//DTD Web Application 2.2//EN” “http://java.sun.com/dtd/web-app_2_2.dtd”> web-app_2_3.xsd <?xml version=”1.0″ […]

  • Preview the 6 most anticipated features of OS X El Capitan


    Apple brought a new generation of OS X desktop operating system, code named El capital, at the wwdc2015 developer conference. El Capitan, called chief rock in Chinese, is a famous stone in Yosemite. In this version, apple aims to improve the performance and efficiency of the system. But that doesn’t mean that the operating system, […]

  • Which Apple devices can upgrade OS X El Capitan system


    Apple released the latest version of OS X El Capitan system at the WWDC 2015 developer conference. A netizen raised a question: which Apple devices can upgrade OS X El Capitan system? For this problem, the following editor will give you a detailed introduction! In Apple’s latest OS X El Capitan system, Safari browser will […]

  • The application of El expression in JSP


    El operator: <%@page language=”java” contentType=”text/html;charset=gb2312″%> <%@page import=”java.sql.*” %> <!DOCTYPE html> <html> <head> < title > El arithmetic operator < / Title > </head> <body> <table border=1> <tr> <td>Arithmetic operator</td> <td>Results</td> </tr> <tr> <td>Addition operator \ ${1 + 1}</td> <td>Result ${1 + 1}</td> </tr> <tr> <td>Subtraction operators \ ${1 – 1}</td> <td>Result ${1-1}</td> </tr> <tr> <td>Multiplication […]

  • Download address and installation tutorial of Mac OS X El Capitan beta


    Apple’s OS x10.11 El Capitan beta has been officially released and downloaded. The beta is open to ordinary users. Even without a developer account, OS X users can experience the new features of the new generation system in advance, as long as you have joined the apple beta software program (how to join the apple […]

  • Apple releases OS X El Capitan and watchos 2 gm


    By convention, Apple releases a beta or developer version of its latest operating system after almost every launch. We just reported that Apple has released IOS 9 GM and IOS 9.1 beta1. In addition, OS X El capital and watchos 2 GM have also been released. As we know, there is almost no functional difference […]

  • Apple releases OS X El capital beta OS X 10.11.1 beta 1 Developer Center Download


    Apple released the first beta of OS X 10.11.1 El Capitan to developers today, two weeks before the official release of OS X El Capitan. It is reported that Apple will release the official version of OS X El capital on September 30. Let’s take a look at the download and update of OS X […]

  • Apple OS X El captain 10.11 official version upgrade problem summary


    The official version of Apple OS X El captain 10.11 has been released for download. Many friends have not downloaded and installed it. Let’s first see what has been updated in the official version of Apple OS X El captain 10.11. Let’s take a look at the new function summary 1) Spotlight search enhancements and […]

  • What should I do if I upgrade OS X 10.11 El Capitan for a shorter endurance? OS X El capital extended range solution


    What should I do if I upgrade OS X 10.11 El Capitan for a shorter endurance? Apple’s OS X elapitan operating system is officially open for download, but after upgrading the new system, some users said that the endurance seemed to be affected. Let’s see what we can do to extend the range. Let’s take […]

  • How to repair disk permissions under OS X El capital?


    Currently, Apple has released the latest OS X El capital system for Mac, version 10.11. Some new functions have been added to the new version of the system. In addition, some functions in the original system have been improved, especially the function of disk tool introduced here today. Because the operation interface of the disk […]