大家早上好，我正在为自己的应用搭建后端，打算用Flyway来做数据库迁移。

我已经在pom.xml中添加了所需的依赖：

<dependency>
    <groupId>org.flywaydb</groupId>
    <artifactId>flyway-core</artifactId>
</dependency>

<dependency>
    <groupId>org.flywaydb</groupId>
    <artifactId>flyway-database-postgresql</artifactId>
    <version>10.15.0</version>
</dependency>

同时也配置了application.yml文件：

spring:
  datasource:
    username: speed
    url: jdbc:postgresql://localhost:5432/DBManage
    password: userpass66!
  jpa:
    properties:
      hibernate:
        dialect: org.hibernate.dialect.PostgreSQLDialect
        format_sql: 'true'
    hibernate:
      ddl-auto: update
    show-sql: 'true'
  flyway:
    driverClassName: org.postgresql.Driver
    enabled: true
    baseline-on-migrate: true
    user: speed
    password: userpass66!

不过在VSCode中使用Flyway插件执行迁移时，我遇到了以下错误：

[ERROR] Failed to execute goal org.flywaydb:flyway-maven-plugin:10.20.1:migrate (default-cli) on project backend: org.flywaydb.core.api.FlywayException: Unable to connect to the database. Configure the url, user and password! -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException

我已经在db\migration目录下创建了所有必要的迁移文件，有没有人能帮我分析下为什么会出现这个连接错误？谢谢大家！

备注：内容来源于stack exchange，提问作者Speedkillsx