Programming VIP

Label (Space Separation): Mybatis Actuator Overview Like tomcat, Mybatis has an executor, but not as complex as tomcat. The executor provides query, modification, transaction submission, transaction rollback, first-level cache cleaning, FlashStatement interface. An executor corresponds to a SqlSession, which is created by Configuration. Mybat ...

MyBatis single form CRUD operation The CRUD operation of single standard is mainly based on how to write high-quality SQL statements. If the column and entity attributes in the table do not correspond to each other in single standard operation, it is suggested to use aliases for mapping. # The diffe ...

  pom.xml <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.woniu</groupId> <artifactId>bkee ...

https://blog.csdn.net/heroqiang/article/details/79135500 Integration package version: 1.3.1 The use of /*/ annotation in the article will provide in-depth analysis and in-depth analysis. text First, let's look at Spring's configuration for integrati ...

Warehouse Address: spring-boot-learningWelcome to star and fork, give some encouragement to the author Preface Mybatis was difficult to use initially, requiring various configuration files, entity classes, Dao layer mapping associations, and a large number of other configurations. mybatis-spring-boot-starter is Spring Boot+ Mybatis, which can b ...

Questions: In one-to-many, when we have a user, it has 100 accounts. When inquiring the user, the account information under the user is when to use and when to query again. When querying an account, the user information of the account should be queried again as the account is queried. What is lazy loading Delayed loading Queries are initiated o ...

Optimistic Lock Introduction: Optimistic Locking is a relative pessimistic lock. Optimistic Locking assumes that data will not conflict in general. Therefore, when data is submitted and updated, it will formally detect the conflict of data. If conflict is found, it will let the user return the wrong information and let the user decide. What to ...

When we use mybatis, we write sql statements in xml. For example, this dynamic sql code: <update id="update" parameterType="org.format.dynamicproxy.mybatis.bean.User"> UPDATE users <trim prefix="SET" prefixOverrides=","> <if test="name != null and name != ''"> name = #{name} </if&gt ...

This article is reproduced in [ http://blog.csdn.net/liaohaojian/article/details/68488150] 1. The definition of a transaction: A transaction is a collection of multiple units of operation that are either not successful or successful.It must follow four principles (ACID). Atomicity: A transaction is the smallest unit of work that cannot be sep ...

The original works can be reproduced, but please indicate the address of the origin: http://www.cnblogs.com/V1haoge/p/6705769.html 1. Review Data source module and previous transaction module are all part of environment, while environment is the foundation of Configuration and the cornerstone of Configuration, but the cornerstone is only to bui ...