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Mybatis parameter (Parameters) pass 1.. Single parameter Values of basic type, object type, collection type can be accepted.In this case, MyBatis can use this parameter directly without any processing.   <!-- according to id Query a record in a data table and encapsulate it User object --> <select id="selectById" resultType="com.s ...

Mybatis parameter (Parameters) pass 1.. Single parameter Values of basic type, object type, collection type can be accepted.In this case, MyBatis can use this parameter directly without any processing.   <!-- according to id Query a record in a data table and encapsulate it User object --> <select id="selectById" resultType="com.s ...

In the previous article Optimizing Mybatis in-query through interceptor Interceptor In, we have resolved the case of an empty in() list in the mybatis query. However, because the list in the foreach tag is empty, not only is an in() empty list, but another common situation occurs when data is inserted in batches, as follows: INSERT INTO table1( ...

*In 2017, at the request of the company, responsible for research and development of intelligent analysis platform, using OLAP technology to analyze tax data from multiple dimensions, levels and cross-business domains, discover data characteristics, summarize tax laws, and support leadership decision-making. After nearly a year, it was finally ...

For the mybatis framework. It seems to be used in copy all the time. For mybatis caching. There is no accurate cognition. Take advantage of the holiday. Learn the cache of mybatis. This article mainly studies the first level cache of mybatis. Why cache In fact, we have been working for a long time, and we know that many bottlenecks ar ...

Initialize global configuration through settings configuration When it comes to initializing the global Configuration of Mybatis through settings, it is difficult for us to bypass the Configuration object of Mybatis. Configuration object is undoubtedly one of the core objects of Mybatis. It defines many properties and methods. In the process of ...

Parsing environment elements to complete multi environment configuration in Mybatis After finishing the tedious process of configuring the Configuration object based on settings, it's time to parse the environments tab and configure the Mybatis multi environment. Mybatis supports multi Environment configuration by default. There is an Environme ...

PostgreSQL is an object relational database management system (ORDBMS) of free software with complete characteristics. It is an object relational database management system based on POSTGRES, version 4.2 developed by the computer department of the University of California. Many of the leading concepts ...

catalog 1, Introduction to spring boot analysis 2, Spring boot annotations to be covered 1.@SpringBootApplication 2.@SpringBootConfiguration 3.@EnableAutoConfiguration 4.@AutoConfigurationPackage 5. Some annotations in the xxxautoconfiguration class 3, Spring application initialization proces ...

Before moving on to dynamic sql, let's start by saying that a user's id in real development is usually out of order, such as random generation using UUID s. Write one below. public class UUIDGenerate { public static String getIdByUUID(){ return UUID.randomUUID().toString().replaceAll("-" ...