SpringBoot整合flyway实现步骤解析
引入依赖
pom.xml
<?xml version="1.0" encoding="UTF-8"?> <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 https://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.2.6.RELEASE</version> <relativePath/> <!-- lookup parent from repository --> </parent> <groupId>com.yang</groupId> <artifactId>fly-way-demo</artifactId> <version>0.0.1-SNAPSHOT</version> <name>fly-way-demo</name> <description>Demo project for Spring Boot</description> <properties> <java.version>1.8</java.version> </properties> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.flywaydb</groupId> <artifactId>flyway-core</artifactId> </dependency> <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.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> <exclusions> <exclusion> <groupId>org.junit.vintage</groupId> <artifactId>junit-vintage-engine</artifactId> </exclusion> </exclusions> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> <plugin> <groupId>org.flywaydb</groupId> <artifactId>flyway-maven-plugin</artifactId> </plugin> </plugins> </build> </project>
第一版sql脚本
src/main/resources/db/migration/V1__sys_dept.sql
SET FOREIGN_KEY_CHECKS=0; -- ---------------------------- -- Table structure for sys_dept -- ---------------------------- DROP TABLE IF EXISTS `sys_dept`; CREATE TABLE `sys_dept` ( `dept_id` int(20) NOT NULL AUTO_INCREMENT, `name` varchar(50) DEFAULT NULL COMMENT '部门名称', `sort` int(11) DEFAULT '0' COMMENT '排序', `create_time` datetime DEFAULT NULL COMMENT '创建时间', `update_time` datetime DEFAULT NULL COMMENT '修改时间', `del_flag` char(1) DEFAULT '0' COMMENT '是否删除 -1:已删除 0:正常', `parent_id` int(11) DEFAULT NULL, PRIMARY KEY (`dept_id`) ) ENGINE=InnoDB AUTO_INCREMENT=8 DEFAULT CHARSET=utf8 ROW_FORMAT=DYNAMIC COMMENT='部门管理';
第二版sql脚本
src/main/resources/db/migration/V1.1__sys_dept.sql
INSERT INTO `sys_dept` VALUES (1, '总经办', 0, '2020-03-13 13:13:16', '2020-03-13 13:14:31', '0', 0); INSERT INTO `sys_dept` VALUES (2, '行政中心', 1, '2020-03-13 13:13:30', NULL, '0', 1); INSERT INTO `sys_dept` VALUES (3, '技术中心', 2, '2020-03-13 13:14:55', NULL, '0', 1); INSERT INTO `sys_dept` VALUES (4, '运营中心', 3, '2020-03-13 13:15:15', NULL, '0', 1); INSERT INTO `sys_dept` VALUES (5, '研发中心', 5, '2020-03-13 13:15:34', NULL, '0', 3); INSERT INTO `sys_dept` VALUES (6, '产品中心', 6, '2020-03-13 13:15:49', NULL, '0', 3); INSERT INTO `sys_dept` VALUES (7, '测试中心', 7, '2020-03-13 13:16:02', NULL, '0', 3);
项目配置文件,主要是dataSource,flyway的采用约定值
src/main/resources/application.properties
spring.datasource.url=jdbc:mysql://127.0.0.1:3306/fly_way?useUnicode=true&characterEncoding=utf8&useSSL=false&serverTimezone=GMT%2B8&allowPublicKeyRetrieval=true spring.datasource.username=root spring.datasource.password=root spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
一些flyway配置项
flyway.baseline-description对执行迁移时基准版本的描述. flyway.baseline-on-migrate当迁移时发现目标schema非空,而且带有没有元数据的表时,是否自动执行基准迁移,默认false. flyway.baseline-version开始执行基准迁移时对现有的schema的版本打标签,默认值为1. flyway.check-location检查迁移脚本的位置是否存在,默认false. flyway.clean-on-validation-error当发现校验错误时是否自动调用clean,默认false. flyway.enabled是否开启flywary,默认true. flyway.encoding设置迁移时的编码,默认UTF-8. flyway.ignore-failed-future-migration当读取元数据表时是否忽略错误的迁移,默认false. flyway.init-sqls当初始化好连接时要执行的SQL. flyway.locations迁移脚本的位置,默认db/migration. flyway.out-of-order是否允许无序的迁移,默认false. flyway.password目标数据库的密码. flyway.placeholder-prefix设置每个placeholder的前缀,默认${. flyway.placeholder-replacementplaceholders是否要被替换,默认true. flyway.placeholder-suffix设置每个placeholder的后缀,默认}. flyway.placeholders.[placeholder name]设置placeholder的value flyway.schemas设定需要flywary迁移的schema,大小写敏感,默认为连接默认的schema. flyway.sql-migration-prefix迁移文件的前缀,默认为V. flyway.sql-migration-separator迁移脚本的文件名分隔符,默认__ flyway.sql-migration-suffix迁移脚本的后缀,默认为.sql flyway.tableflyway使用的元数据表名,默认为schema_version flyway.target迁移时使用的目标版本,默认为latest version flyway.url迁移时使用的JDBC URL,如果没有指定的话,将使用配置的主数据源 flyway.user迁移数据库的用户名 flyway.validate-on-migrate迁移时是否校验,默认为true.
启动项目可以看到业务表的变化及flyway_schema_history版本记录表的变化。
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