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Conversation Technology Session: a session contains multiple requests and responses One session: the browser sends a request to the server resource for the first time, and the session is established until one party is disconnected Shared data: data is shared among multiple requests within the scope of a session Client session Technology: cooki ...

1, One to many association configuration Database: master table, slave table, associated by foreign key Class: class A{ B b； } class B{ } Example: order and orderItem order entity class package com.sjy.entity; import java.util.HashSet; import java.util.Set; public class Order { // create table t_hibernate_order // ( // order_id i ...

catalogue PHP introduction 1.PHP source code compilation php Download   Software compilation   2. Configuration of PHP FPM file 3.nginx+php-fpm    4. Add memcache module in php Software download Build nginx cache and add memcache function module   5. Configure the php loading module openresty Download module &n ...

This page will introduce an example of Spring Boot Tomcat JDBC connection pool. Tomcat connection pool supports high concurrency environment with high performance. Tomcat connection pooling is very simple because its implementation is very simple. Tomcat connection pool has the ability to configure custom interceptors to better handle id ...

Previous review 1. What is API: ① API is application programming interface; ② It includes source code, bytecode and help documents (note that the version number is consistent). 2.JavaSE and JavaEE: ① JavaSE: <1> Javase is the standard version of java and has a set of basic class libraries; <2> The source code is sto ...

1, JSP JSP is a special file format. It can embed Java code in html, but it is essentially a subclass of Servlet JSP execution process: The browser requests JSP from the server - > the server finds the corresponding JSP file - > translates it into Java code and compiles it for execution - > returns the execution result to the se ...

brief introduction I have dealt with many programmers. These programmers may be familiar with several ways of writing for traversal, but they know nothing about the environment in which the written program is deployed. I bet few programmers know how tomcat works after spring boot. For them, running a jar package is done. The advanced nature o ...

executor Executor is the engine, user requests are processed by executor, perception tells us this should be a multi-threaded, thread pool container, let's first look at the relationship between classes; public interface Executor extends java.util.concurrent.Executor, Lifecycle { public String getName(); @Deprecated void execute ...

1.Servlet annotation and configuration file writing 1.1 writing method of configuration file [if Servlet version is low] 1. You need to write the configuration in the web.xml file Find the resource web.xml First, create a test class to inherit HttpServlet and override doGet and doPost methods package com.javacoffee.test; import java ...

This article uses jdk1.8 version and eclipse to develop the code under the software environment. Beginners should install the environment first. If necessary, please check it [Java] JDK installation and environment configuration [Java] Eclipse installation and J2EE development environment configuration Introduction to Web server } Web S ...