使用flyway的时候出现无法找到sql文本的异常，构建工具是用的gradle，开发工具idea，以下是相关代码
gradle.properties

flyway.url= jdbc:mysql://127.0.0.1:3306/test?characterEncoding=utf8
flyway.user= root
flyway.password= 123456

build.gradle

group 'scheduleTest'
version '1.0-SNAPSHOT'
buildscript{
    repositories{
        mavenCentral()
    }
    dependencies{
        classpath("org.springframework.boot:spring-boot-gradle-plugin:1.2.+")
        classpath 'org.flywaydb:flyway-gradle-plugin:3.2.+'
    }
}
apply plugin: 'java'
apply plugin: 'spring-boot'
apply plugin: 'idea'
apply plugin: 'org.flywaydb.flyway'

sourceCompatibility = 1.8
targetCompatibility = 1.8
repositories {
    mavenCentral()
}

dependencies {
    compile("org.springframework.boot:spring-boot-starter-web:1.2+")
    testCompile("org.springframework.boot:spring-boot-starter-test:1.2+")
    runtime("mysql:mysql-connector-java:5.1.+")
    compile("org.springframework.boot:spring-boot-starter-data-jpa:1.2.+")
    testCompile group: 'junit', name: 'junit', version: '4.11'
}

db.migration路径

报错信息

* What went wrong:
Execution failed for task ':flywayMigrate'.
> Error occurred while executing flywayMigrate
Unable to scan for SQL migrations in location: classpath:db/migration
Unable to determine URL for classpath location: db/migration (ClassLoader: java.net.URLClassLoader@1239a1bd)

datasource配置是没有问题的，因为可以成功执行gradle flywayClean命令将数据库所有表清除，然后sql命名也是遵循V<version>__<name>.sql方式，不知道问题处在哪里，还请指点一下，感激不尽 ~！