Programmer Group

introduce In this article, we will deal with the transformations that need to be done between the internal entities of Spring applications and DTO s (data transfer objects) outside the client. Model mapping Let's start by introducing the main library of entity to DTO transformation for execution - ModelMapper. We need to add the following depen ...

In the previous articles, we mainly analyzed the separate use of Mybatis. In practice, most of the common project development uses mybatis in conjunction with Spring. After all, few projects are developed without Spring.This article describes how Mybatis works with Spring and how its source code is implemented. Spring-Mybatis uses Add maven dep ...

Preface Above How Mybatis XML maps to methods When you talk about result mapping in Mybatis, you need to create objects and assign values to their attributes. To create objects, you use Mybatis's built-in object factory class, DefaultObjectFactory. Of course, Mybatis also provides an extension mechanism that allows users to implement their own ...

I. dao level 1. Develop dao interface public interface ProductCategoryDao { /** * Delete specified product category * @param productCategoryId * @param shopId * @return effectedNum */ int deleteProductCategory(@Param("productCategoryId") long productCategory,@Param("shopId") long shopId); } 2. Develop mapper impleme ...

Reference resources: https://blog.51cto.com/1196740/2394289?source=dra Catalog Download source code: Compile and pack Modify file directory Modify opnetsdb.conf Running TSDMain Download source code:     git clone https://github.com/OpenTSDB/opentsdb.git Compile and pack To build the pom.xml configuration file: [root@Mac ...

BeanFactory Source Code Analysis for Spring (2) Preface In the previous section, we briefly analyzed the structure of BeanFactory, ListableBeanFactory, HierarchicalBeanFactory, AutowireCapableBeanFactory.DefaultListableBeanFactory, the main core class, gradually separates BeanFactory's functionality by programmatically starting the IOC containe ...

Preface Above How the Mapper interface of Mybatis executes SQL You learned that Mapper executes SQL through a dynamic proxy, but there is no detailed description of how the method maps, including method names, return values, parameters, and so on; how these relate to xxMapper.xml. Method Name Mapping The purpose of caching MapperMethod s me ...

 .NET Framework : 4.7.2        IDE : Visual Studio Community 2019         OS : Windows 10 x64     typesetting : Markdown         blog : blog.csdn.net/yushaopu        github : github.com/GratefulHeartCoder   xml file <?xml version="1.0" encoding="utf-8"?> <cultures> <taoists count="100" comme ...

Table sorter includes JavaScript and a little CSS, which can make the original html table be able to sort each row according to the data value of each column. Effect Click in any column in the header, and the following lines will be sorted in ascending order according to the column value Order by string comparison Click the co ...

Recently, I want to write a mybatis paging plug-in, but before I write the plug-in, I must understand the specific working principle of mybatis, so I will start to work by referring to other blogs and reading the source code. Core components: SqlSession Executor StatementHandler ParameterHandler ResultSetHandler TypeHandler MappedStatement Co ...