@RequestMapping annotation The function of @RequestMapping annotation The location of the @RequestMapping annotation @RequestMapping annotated properties 1. value attribute 2. method attribute 3. params attribute (understand) Replenish @RequestParam @RequestHeader @RequestBody @RequestBody gets request parameters in json format @ResponseBody @RestController annotation Function of @RequestMapping annotation The function of the @RequestMapping annotation is to associate the request […]
Tag: ping
[C#] Use of Mapster object mapping
Series of articles [C#] Number generator (define order number rules, fixed characters, serial numbers, business order numbers) Link to this article: https://blog.csdn.net/youcheng_ge/article/details/129129787 [C#] Date range generator (start date, end date) Link to this article: https://blog.csdn.net/youcheng_ge/article/details/129040663 [C#] Component development, calling dll component methods Link to this article: https://blog.csdn.net/youcheng_ge/article/details/129492112 [C#] Use of data entity classes Link to […]
Project practice: component scanning (5) – parse methods with GetMapping or PostMapping and finally encapsulate them into ControllerDefinition
1. ControllerDefinition package com.csdn.mymvc.core; import lombok.AllArgsConstructor; import lombok.Data; import lombok.NoArgsConstructor; import java.lang.reflect.Method; import java.util.HashMap; import java.util.Map; //Suppose there is a uri:/fruit/index @Data @NoArgsConstructor @AllArgsConstructor public class ControllerDefinition { private String requestMapping; private Object controllerBean; private Map<String, Method> methodMappingMap = new HashMap<>(); } 2. ComponentScan package com.csdn.mymvc.core; import com.csdn.mymvc.annotation.*; import java.io.File; import java.lang.annotation.Annotation; import java.lang.reflect.Field; import […]
Project practice: component scanning (4) – filtering bean instances with RequestMapping annotations
1. ControllerDefinition package com.csdn.mymvc.core; import lombok.AllArgsConstructor; import lombok.Data; import lombok.NoArgsConstructor; import java.lang.reflect.Method; import java.util.HashMap; import java.util.Map; //Suppose there is a uri:/fruit/index @Data @NoArgsConstructor @AllArgsConstructor public class ControllerDefinition { private String requestMapping; private Object controllerBean; private Map<String, Method> methodMappingMap = new HashMap<>(); } 2. ComponentScan package com.csdn.mymvc.core; import com.csdn.mymvc.annotation.*; import java.io.File; import java.lang.annotation.Annotation; import java.lang.reflect.Field; import […]
Simulation realizes lio_sam mapping and ndt_matching positioning
Article directory 1. Simulation environment 2. lio_sam mapping 1. Modify configuration file 2. Start building a map 3. ndt_matching positioning 1. Create a new startup file 2. Start Summarize 1. Simulation environment Use the existing open source simulation environment to build a ROS open source mini unmanned vehicle from scratch. The author has configured the […]
Linux memory management–high-end memory mapping kmap persistent kernel mapping
1 High-end memory and kernel mapping Although the vmalloc function family can be used to map page frames from high memory areas to the kernel (these are usually not directly visible in kernel space), this is not the actual purpose of these functions. It is important to emphasize the fact that the kernel provides other […]
HDU 1686: Oulipo ← KMP algorithm (overlapping calculations)
[Source of the question]http://acm.hdu.edu.cn/showproblem.php?pid=1686http://poj.org/problem?id=3461 [Title description] The French author Georges Perec (1936–1982) once wrote a book, La disparition, without the letter ‘e’. He was a member of the Oulipo group. A quote from the book: Tout avait Pair normal, mais tout s’affirmait faux. Tout avait Fair normal, d’abord, puis surgissait l’inhumain, l’affolant. son tapis, assailant […]
The SpringBoot project keeps jumping to the default Please sign in
1 Questions and screenshots Projects that are normally logged in suddenly keep jumping to the Please sign in page 2 When the code is started, the console below outputs a line Using generated security password: ec9fdd88-21cc-42b2-8fa1-62e1b810e7b5 At this point security is integrated into the project 3 Solution Just add annotations to the startup annotations so […]
03-Sping transaction implementation: XML-based implementation of declarative transactions
XML implementation of declarative transactions Development steps Step 1: Introduce AOP-related aspectj dependencies <!–aspectj dependency–> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-aspects</artifactId> <version>6.0.0-M2</version> </dependency> Step 2: Write the dao layer interface and its implementation class public interface AccountDao {<!– –> // Check the balance based on the account number Account selectByActno(String actno); //Update account information int update(Account act); } […]
MySQL sorting, grouping, and Limit optimization strategies
Table of Contents 1. Two sorting methods in MySQL 2. Sorting optimization strategy 2.1 Add index to sorting field 2.2 You can create a joint index with the WHERT field 2.3 Optimize FilerSort sorting method 3. Group optimization strategy 3.1 Can WHERE but not HAVING 3.2 Reduce ORDER BY, GROUP BY, DISTINCT 3.3 Follow the […]