Programmer Think

Today, all the train tickets have been bought. I feel closer and closer to Xiagong 🤗， Yada 😭😭😭😭😭 1. jsp first entry 1.1. What is jsp 1. The full replacement of jsp is java server pages, which is the server page of Java 2. The main function of jsp is to return the data of html page instead of Servlet program 3. Because it is very com ...

The login interface is available for every project, and it is also a small start of a project. How to design the page and the corresponding logic. 1. Interface design Everyone has different ideas and aesthetics about the interface. This time, we mainly focus on the implementation of login logic. The languages required for interface design inc ...

1, Project module introduction and database design 1. Engineering structure 2. Module introduction Guli parent: online teaching root directory (parent project), managing four sub modules Canal client: canal database table synchronization module (statistical synchronization data)Common: parent node of common module Common util: ...

Object oriented programming of Java core essence Organize code in the form of class and encapsulate data in the form of object Review method calls static Static method static is loaded with the class //demo01 public class demo01 { public static void main(String[] args) { student.say();//Direct call } } //studen ...

1, Instructor query function 1. Write query controller code content @RestController @RequestMapping("/eduservice/teacher") public class EduTeacherController { @Autowired private EduTeacherService eduTeacherService; // Instructor query all data list // Use restful style @GetMapping("findAll") public List<EduTea ...

1, Concept questions 1. Briefly describe the relationship among programs, processes and threads. What is a multithreaded program? Relationship between programs, processes and threads: Program: a program is a set of ordered instructions and stored in a medium. It is a static concept. Process: process is a concept introduced to enable pro ...

3. Local Method Stack The local method stack is java The virtual machine needs to provide memory space for some local methods when they are called, which refers to those that are not java How to write code, because Ours java Code has some limitations, it sometimes can't deal directly with the bottom level of our operating system, so it need ...

When using PageHelper in Mybatis, if you encounter multi table queries, especially associated queries (one-to-one, one to many) If two or more tables contain the same column name, it will lead to: 1. For one to many and multiple parties, there will be an undefined column (the primary key name or a field name are the same) ### The error may e ...

1. spring overview 1.1 what is spring Spring is a lightweight open source framework for layered Java SE/EE application full stack, with IoC (Inverse Of Control) and AOP (Aspect Oriented Programming) as the kernel. It provides many enterprise application technologies such as presentation layer spring MVC, persistence layer spring JDBC tem ...

web.xml configuration Root label <?xml version="1.0" encoding="UTF-8"?> <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:jsp="http://java.sun.com/xml/ns/javaee/jsp" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app ...