Shulou(Shulou.com)05/31 Report--

This article mainly introduces "the detailed step introduction of MyBatis operating database". In the daily operation, I believe that many people have doubts about the detailed step introduction of MyBatis operating database. The editor consulted all kinds of materials and sorted out simple and easy-to-use operation methods. I hope it will be helpful to answer the doubts of "detailed step introduction of MyBatis operating database". Next, please follow the editor to study!

When operating the database, MyBatis is mainly divided into eight steps:

(1) read the MyBatis configuration file mabatis-config.xml,mabatis-config.xml as the global configuration file of MaBatis, configure the running environment of MyBatis and other information, mainly to obtain the database connection.

(2) load the mapping file Mapper.xml. Mapper.xml is the SQL mapping file, which is configured with SQL statements that manipulate the database and needs to be loaded in mybatis-config.xml before execution. Mybatis-config.xml can add multiple profiles, each corresponding to a table in the database.

(3) build a session factory. Build the session factory SqlSessionFactory through the configuration information such as the environment of the MyBatis.

(4) create a SqlSession object. The SqlSession object is created by the session factory. Which contains all the methods that perform the SQL

(5) An Executor interface defined by MyBatis dynamically generates SQL statements according to the parameters passed by SqlSession and is responsible for the maintenance of query cache.

(6) generate MappedStatement objects according to the generated SQL statements.

(7) input mapping objects to MappedStatement, where the mapping process of input parameters is equivalent to the process of setting parameters for preparedStatement objects in JDBC programming.

(8) execute the SQL statement to process the results returned by the MappedStatement object.

At this point, the study of "detailed steps for MyBatis to operate the database" is over. I hope to be able to solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

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