With the development of the accumulation of time, a project will be growing, but the table structure more and more complex to manage, especially when you want to split a project into multiple A small items, the table structure demolished Branch consume a lot of energy; LiquiBase If you are using the database management, it will greatly enhance the efficiency of migration, or to just split the project as an example, if you use Liquibase, you only need to specify the module list file migration that is gone can.
The next step is to use Springboot achieve Liquibase.
1, import-dependent
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jdbc</artifactId>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
</dependency>
<dependency>
<groupId>org.liquibase</groupId>
<artifactId>liquibase-core</artifactId>
</dependency>
2, configuration items
spring: profiles: active: test datasource: url: jdbc:mysql://***.76:3306/test?useUnicode=true&characterEncoding=UTF-8&zeroDateTimeBehavior=convertToNull&allowMultiQueries=true&useSSL=false username: root password: *** liquibase: enabled: true change-log: classpath:/db/changelog/db.changelog-master.yml
3, the definition db.changelog-master.yml
databaseChangeLog: # 支持 yaml 格式的 SQL 语法 - changeSet: id: 1 author: Levin changes: - createTable: tableName: person columns: - column: name: id type: int autoIncrement: true constraints: primaryKey: true nullable: false - column: name: first_name type: varchar(255) constraints: nullable: false - column: name: last_name type: varchar(255) constraints: nullable: false - changeSet: id: 2 author: Levin changes: - insert: tableName: person columns: - column: name: first_name value: Marcel - column: name: last_name value: Overdijk # Also supports dependent on external SQL files (TODO personally like this) - changeSet: the above mentioned id: 3 author: Levin Changes: - SQLFile: encoding: utf8 path: the CLASSPATH: db /changelog/sqlfile/test1.sql
4, due to the dependence on external files are also supported, once a new sql file
INSERT INTO `person` (`id`, `first_name`, `last_name`) VALUES ('3', 'test', 'test2');
5, run the project
It can be seen at the start of the project, liquibase built two tables DATABASECHANGELOG, DATABASECHANGELOGLOCK, used to store the log table structure changes, creating a person table based on the profile and stored data.
