无法将Flyway迁移与Google Cloud SQL和Maven一起使用

我只是想用maven、flyway和Google Cloud SQL建立一个简单的Hello World概念验证。有关我使用的完整代码，请参阅。（问题张贴在提交时）

无论何时运行

mvn flyway:migrate

，无论从哪台机器运行，都会出现以下错误：

[ERROR] Failed to execute goal org.flywaydb:flyway-maven-plugin:4.0.2:migrate (default-cli) on project mvn-flyway-cloudsql-test: com.google.apphosting.api.ApiProxy$CallNotFoundException: Can't make API call rdbms.OpenConnection in a thread that is neither the original request thread nor a thread created by ThreadManager -> [Help 1]

以下是我的pom.xml：

<!--
    mvn-flyway-cloudsql-test is an example of how to set up a Maven/Flyway/Google CloudSQL integration.
    Copyright (C) 2017  Christopher R. Reyes

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
-->
<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>reyes.r.christopher</groupId>
  <artifactId>mvn-flyway-cloudsql-test</artifactId>
  <version>1.0-SNAPSHOT</version>
  <packaging>jar</packaging>

  <name>mvn-flyway-cloudsql-test</name>
  <url>http://maven.apache.org</url>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  </properties>

  <dependencies>
    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <version>6.0.6</version>
        <scope>compile</scope>
    </dependency>
    <dependency>
        <groupId>com.google.appengine</groupId>
        <artifactId>appengine-api-1.0-sdk</artifactId>
        <version>1.9.54</version>
    </dependency>
    <dependency>
        <groupId>org.flywaydb</groupId>
        <artifactId>flyway-core</artifactId>
        <version>4.0</version>
    </dependency>
  </dependencies>


    <build>
        <plugins>
            <plugin>
                <groupId>org.flywaydb</groupId>
                <artifactId>flyway-maven-plugin</artifactId>
                <version>4.0.2</version>
                <configuration>
                    <!-- 
                         Normally, I would specify these in a flyway.properties file. 
                         Since I don't want to check in my actual instance address, username, and password to a public git repository, I'll do this instead.
                    -->
                    <url>jdbc:google:rdbms://${instance}:3306/hello_world?serverTimezone=UTC&amp;useSSL=true&amp;verifyServerCertificate=true&amp;requireSSL=true</url>
                    <user>${user}</user>
                    <password>${password}</password>
                    <driver>com.google.appengine.api.rdbms.AppEngineDriver</driver>
                </configuration>
            </plugin>
        </plugins>
    </build>

</project>

我已经确认，我可以使用gcloud工具使用相同的凭据直接登录到云sql:

gcloud sql connect-REDACTED--user=$user

。当我在打开的mysql工具中键入

\s

时，我可以确认用户是相同的，并且连接与我一直使用的

$instance

相同。在尝试

mvn flyway:migrate

之前和之后，我都尝试过使用

gcloud

工具，但它没有改变错误消息

我看了一下，但我的错误信息不同。我无论如何都尝试了修复（放入mysql jdbc jar），但它根本没有改变错误消息

---

谢谢你的帮助

我在谷歌与Jinjun交谈，他能给我指出一些。我需要使用它们的url并重新格式化JDBCURL字符串

具体而言，我在pom.xml中添加了以下依赖项：

<!-- https://mvnrepository.com/artifact/com.google.cloud.sql/mysql-socket-factory-connector-j-6 -->
<dependency>
    <groupId>com.google.cloud.sql</groupId>
    <artifactId>mysql-socket-factory-connector-j-6</artifactId>
    <version>1.0.2</version>
</dependency>

---

我已经更新了我的，并在一些不同的机器上测试了它，以测试可移植性。

此外，如果配置文件中有jdbc连接器字符串，则不需要HTML转义符号（

&；

）

<!-- https://mvnrepository.com/artifact/com.google.cloud.sql/mysql-socket-factory-connector-j-6 -->
<dependency>
    <groupId>com.google.cloud.sql</groupId>
    <artifactId>mysql-socket-factory-connector-j-6</artifactId>
    <version>1.0.2</version>
</dependency>

jdbc:mysql://google/hello_world?cloudSqlInstance=${instance}&socketFactory=com.google.cloud.sql.mysql.SocketFactory