Flyway not finding my sql migrations in db/migration - flyway

Question

The error:
[ERROR] com.googlecode.flyway.core.api.FlywayException: Unable to determine URL for classpath location: db/migration (ClassLoader: ClassRealm[plugin>com.googlecode.flyway:flyway-maven-plugin:2.1.1, parent: sun.misc.Launcher$AppClassLoader#43be2d65])
I followed the quickstart, so I'm not really doing anything complex yet.
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.cpt.migrations</groupId>
<artifactId>cpt_migrations</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>jar</packaging>
<name>cpt_migrations</name>
<url>http://maven.apache.org</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.24</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>com.googlecode.flyway</groupId>
<artifactId>flyway-maven-plugin</artifactId>
<version>2.1.1</version>
<configuration>
<user>root</user>
<password></password>
<driver>com.mysql.jdbc.Driver</driver>
<url>jdbc:mysql://localhost:3306/cpt</url>
</configuration>
</plugin>
</plugins>
</build>
</project>
And my folder structure is the prescribed PROJECT_ROOT/src/main/resources/db/migration/V1__Base_version.sql:
I get the error when, from the PROJECT_ROOT, I execute:
mvn flyway:migrate

Answer 1

Don't forget to call compile first, to make sure the resources are copied over.

Answer 2

In my case I had to explicitely set
flyway.locations=classpath:db/migration
in my application.properties (Spring Boot) for it to work.

Answer 3

in my case this error was caused as package with name db.migration was created
instead of db -> migration

Answer 4

It has to be compiled:
mvn compile flyway:migrate
You may use
<executions>
<execution>
<id>compile</id>
<phase>compile</phase>
<goals>
<goal>migrate</goal>
</goals>
</execution>
<execution>
<id>clean</id>
<phase>clean</phase>
<goals>
<goal>clean</goal>
</goals>
</execution>
</executions>
in
<plugin>..</plugin>
and then just mvn compile is needed for execution of migrate task

Answer 5

In my case IntelliJ Idea created a folder db.migration instead of two separate folders db and migration inside

Answer 6

Execute mvn command from directory where target dir is located.