Programmer Group

CORS (cross origin resource sharing) "cross domain resource sharing" is a W3C standard. It allows browsers to send Ajax requests to cross domain servers, breaking the resource limit that Ajax can only access the site. CORS is used in many places. JS payment of wechat payment is to send cross domain requests to wechat servers through ...

1. Before connecting to the memcache server, set up the memcache server in advance, remember the ip and port number of the created server, and use the ip and port number to connect using java code. 2. Start using java links 2.1 introduce the jar files memcached-2.0.1.jar and memcached-1.1.jar into the project 2.2 con ...

1 Introduction Nginx is a very powerful and popular high-performance Web server. This article explains how nginx integrates https and redirects http to https. https related articles are as follows: (1)Spring boot integration https is so simple (2)Key knowledge and key tools of HTTPS Keytool and keystore Explorer (3)Two ways for spring boot to r ...

Project Description: in the wechat applet, log in and verify with the spring boot operation database. I use spring boot to integrate the mybatis plus and mysql operation database 1. Preparation before development 1.1 prior knowledge java Foundation SpringBoot simple Basics 1.2 environmental parameters Development tools: IDEA Basic environm ...

Spring's Bean internal method call cannot use AOP facet (CacheAble annotation is invalid) Preface Today, in the process of using Spring cache's Cacheable annotation, we encountered a problem of invalidation of Cacheable annotation. The reason for checking the problem is that Spring's Cacheable annotation is implemented based on Spring AOP, but ...

Implementation of query ideas: 1. Define a local Toolbar including the buttons of new, save and new 2. Define a query form on the right that contains query criteria and query clear button 3. Define a Table The effect is as follows: The code is as follows <div class="container-fluid"> <div> <div id="toolbar ...

main start Jetty Server mode 1, web engineering starts jetty server through main 1.JettyServerLauncher import org.eclipse.jetty.server.Server; import org.eclipse.jetty.webapp.WebAppContext; public class JettyServerLauncher { private static final int DEFAULT_PORT = 8080; private static final String DEFAULT_WEBAPP = "WebRoot"; priv ...

From: Real native SVG stroke animation stroke property Stroke defines the stroke color stroke="#0078ff" strokeWidth defines the width of the stroke strokeWidth="3" Properties used to create dashes: strokeDasharray creating dashed lines // Suppose a space of 5 pixels, a space of 5 pixels strokeDasharray="5" // What we can see is a 5-pixel ...

Write in front   the project is designed for front-end and back-end separation, using Nginx as the front-end resource server, and realizing the reverse proxy of the back-end service. The background is Java Web project, which uses Tomcat to deploy services. Front end framework: bootstrap 4, Vue.js2 Background framework: spring boot, sprin ...

Here are the use of some methods in String type, including: Extraction of elements in string; Appending of elements in string; String ignore case for comparison; Conversion of Chinese and English letters in string; Get string length; Replace the element or substring in the string; String truncation; Eliminate the firs ...