Class exercise, no service and servlet written Database SET NAMES utf8mb4; SET FOREIGN_KEY_CHECKS = 0; —————————- — Table structure for students —————————- DROP TABLE IF EXISTS `student`; CREATE TABLE `student` ( `stuid` int NOT NULL, `stuname` varchar(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NULL DEFAULT NULL, `stusex` int NULL DEFAULT NULL, PRIMARY KEY (`stuid`) USING BTREE […]
Tag: javaw
Detailed analysis of HTML and CSS in Javaweb
2.4 Table tag Scenario: Display data neatly in the form of tables (rows and columns) on web pages. In some management systems, we will see that data is usually presented in the form of tables, such as: Class schedule, student schedule, course schedule, grade schedule, etc. Tag: : used to define the entire table, which […]
JavaWeb–Login interface verification code generation (detailed operation)
Table of Contents 1. Introduction 1. What is a verification code? 2. Types of verification codes 3. Character verification code 1. Implement CheckCodeServlet 2. Display verification code in JSP page 3. Verify whether the user input is consistent with the data stored in the Session 4. Effect demonstration 1. Introduction 1. What is a verification […]
Algorithm project pipeline laying system (javaweb+mvc+idea+degree map+prim)
This project requires the development of a pipeline laying auxiliary system. Taking the west campus of our school as an example, it is located in the Liren College teaching building, student apartments, student cafeteria, first, second, third and fourth teaching Buildings, School of Materials Science, School of Electrical Engineering, School of Science, Laying water pipelines […]
JavaWeb – Filters and Listeners
Table of Contents 1. Overview of filters 1.1. What is a filter? 1.2. Function of filter 1.3. Filter life cycle 1.4. Filter interception path configuration 1.5. Examples 1.5.1. Character encoding 1.5.2. Login code 2. Overview of listeners 2.1. What is a listener? 2.2. Classification of listeners 2.3. Listener life cycle 2.4. Examples 1. Filter Overview […]
JavaWeb filter Filter (login verification)
1. Definition of filter Filter is one of the three major components of JavaWeb (Servlet, Filter, Listener). Filter is a JavaEE specification, which is an interface. When developing a web application, if the Java class written implements this interface, the Java class is called a filter. Common scenarios: character encoding settings, filtering operations, login verification. […]
JavaWeb – Servlet principle, life cycle, implementing a Servlet in IDEA (whole process)
6. servlet 6.1. What is servlet In JavaWeb, Servlet is a server-side component written in Java that is used to process HTTP requests sent by clients (usually web browsers) and generate corresponding HTTP responses. Servlet runs on the Web server, interacts with the Web container (such as Tomcat), and distributes the request to the appropriate […]
JavaWeb – JSP explained in detail
Table of Contents introduce 1. What is JSP? 2. Characteristics of JSP 3. The difference between JSP and Servlet 4. Use of JSP 1. Three major instructions 1.1. Page command 1.2. Include instruction 1.3. Taglib instructions 2. Nine built-in objects 3. Four domain objects 4. JSP tags 4.1. Label 4.2. Label 4.3. Label 5. JavaBeans […]
JavaWeb—-HTML/CSS
1. Overview of JavaWeb 1. Web standards Web standards: also known as web standards, most of which are developed by W3C and consist of three parts: HTML: Responsible for the structure of the web page (page elements and content) CSS: Responsible for the performance of the web page (the appearance, position and other page styles […]
JavaWeb–Cookie and Session
Table of Contents 1 Introduction 1.1. What is a session? 1.2. The role of conversation 1.3. Commonly used conversational technologies 1.4. Cookies 1.4.1 What are cookies? 1.4.2. Cookie description 1.4.3. Creation of Cookies 1.4.4. Record the customer’s last login time ?edit 1.5、Session 1.5.1. What is Session? 1.5.2. Obtain Session object 1.5.3. Under what circumstances will […]