SpringBoot整合flyway

1. 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>

2. 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';

3. 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);

4. 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

5. 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.

6. 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。