Spring boot 3.2 和 Google Cloud Mysql 的连接问题

Question

我正在努力过渡到 Google Cloud MySQL。我们目前已连接到我们自己的托管 mysql 服务器，并且工作正常。我们使用四个独立的 MySql 连接，因此设置并不简单。这是我专门针对 Google Cloud MySQL 所做的更改

pom.xml：

<dependencies>
    ....
     <dependency>
        <groupId>com.google.cloud</groupId>
        <artifactId>spring-cloud-gcp-starter-sql-mysql</artifactId>
    </dependency>
    <dependency>
        <groupId>com.google.cloud.sql</groupId>
        <artifactId>mysql-socket-factory-connector-j-8</artifactId>
    </dependency>
 .....
  </dependencies>
<dependencyManagement>
   <dependencies>
       <dependency>
           <groupId>com.google.cloud</groupId>
           <artifactId>spring-cloud-gcp-dependencies</artifactId>
           <version>5.0.0</version>
           <type>pom</type>
           <scope>import</scope>
       </dependency>
   </dependencies>
</dependencyManagement>

应用程序属性：

    spring.cloud.gcp.project-id=PROJECT_ID
    spring.cloud.gcp.credentials.location=classpath:CREDENTIAL_FILE_LOCATION
    spring.cloud.gcp.sql.enabled=false
    
    userdb.read.datasource.url=jdbc:mysql:///DB_NAME?cloudSqlInstance=INSTANCE_NAME&socketFactory=com.google.cloud.sql.mysql.SocketFactory
    userdb.read.datasource.username=USERNAME
    userdb.read.datasource.password=PASSWORD   
    userdb.read.datasource.tomcat.max-wait=5000
    userdb.read.datasource.tomcat.max-active=2
    userdb.read.datasource.tomcat.test-on-borrow=true
    # THREE MORE SIMILAR CONNECTION SETTINGS

除了连接设置之外，我还配置了凭据。我的其余代码按原样，您认为我做错了什么？以下是我收到的错误：

: HikariPool-1 - Exception during pool initialization.

java.sql.SQLNonTransientConnectionException: Could not create connection to database server.
    at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:111) ~[mysql-connector-j-8.1.0.jar:8.1.0]
    at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:98) ~[mysql-connector-j-8.1.0.jar:8.1.0]
    at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:90) ~[mysql-connector-j-8.1.0.jar:8.1.0]
    at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:64) ~[mysql-connector-j-8.1.0.jar:8.1.0]
    at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:995) ~[mysql-connector-j-8.1.0.jar:8.1.0]
    at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:809) ~[mysql-connector-j-8.1.0.jar:8.1.0]
    at com.mysql.cj.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:440) ~[mysql-connector-j-8.1.0.jar:8.1.0]
    at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:239) ~[mysql-connector-j-8.1.0.jar:8.1.0]
    at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:188) ~[mysql-connector-j-8.1.0.jar:8.1.0

Caused by: java.lang.RuntimeException: Unable to obtain credentials to communicate with the Cloud SQL API
    at com.google.cloud.sql.core.ApplicationDefaultCredentialFactory.getCredentials(ApplicationDefaultCredentialFactory.java:42) ~[jdbc-socket-factory-core-1.14.1.jar:1.14.1]
    at com.google.cloud.sql.core.ApplicationDefaultCredentialFactory.create(ApplicationDefaultCredentialFactory.java:32) ~[jdbc-socket-factory-core-1.14.1.jar:1.14.1]
    at com.google.cloud.sql.core.CoreSocketFactory.apiFetcher(CoreSocketFactory.java:417) ~[jdbc-socket-factory-core-1.14.1.jar:1.14.1]
    at com.google.cloud.sql.core.CoreSocketFactory.lambda$getCloudSqlInstance$0(CoreSocketFactory.java:396) ~[jdbc-socket-factory-core-1.14.1.jar:1.14.1]
    at java.base/java.util.concurrent.ConcurrentHashMap.computeIfAbsent(ConcurrentHashMap.java:1708) ~[?:?]

Caused by: java.io.IOException: Your default credentials were not found. To set up Application Default Credentials for your environment, see https://cloud.google.com/docs/authentication/external/set-up-adc.
    at com.google.auth.oauth2.DefaultCredentialsProvider.getDefaultCredentials(DefaultCredentialsProvider.java:127) ~[google-auth-library-oauth2-http-1.20.0.jar:1.20.0]
    at com.google.auth.oauth2.GoogleCredentials.getApplicationDefault(GoogleCredentials.java:129) ~[google-auth-library-oauth2-http-1.20.0.jar:1.20.0]
    at com.google.auth.oauth2.GoogleCredentials.getApplicationDefault(GoogleCredentials.java:101) ~[google-auth-library-oauth2-http-1.20.0.jar:1.20.0]
    at com.google.cloud.sql.core.ApplicationDefaultCredentialFactory.getCredentials(ApplicationDefaultCredentialFactory.java:40) ~[jdbc-socket-factory-core-1.14.1.jar:1.14.1]
    at com.google.cloud.sql.core.ApplicationDefaultCredentialFactory.create(ApplicationDefaultCredentialFactory.java:32) ~[jdbc-socket-factory-core-1.14.1.jar:1.14.1]
    at com.google.cloud.sql.core.CoreSocketFactory.apiFetcher(CoreSocketFactory.java:417) ~[jdbc-socket-factory-core-1.14.1.jar:1.14.1]
    at com.google.cloud.sql.core.CoreSocketFactory.lambda$getCloudSqlInstance$0(CoreSocketFactory.java:396) ~[jdbc-socket-factory-core-1.14.1.jar:1.14.1]
    at java.base/java.util.concurrent.ConcurrentHashMap.computeIfAbsent(ConcurrentHashMap.java:1708) ~[?:?]

Answer 1

在我看来，您正在尝试使用 Cloud SQL Java 连接器 (cloud-sql-jdbc-socket-factory) 连接到 SQL 实例。 Java 连接器调用 GoogleCredentials.getApplicationDefault() 来获取 Google 凭据。根据 API 文档，该 API 按此顺序搜索凭证文件，

1. GOOGLE_APPLICATION_CREDENTIALS 环境变量指向的凭据文件
2. Google Cloud SDK 提供的凭据。

• gcloud auth 应用程序 - 用户帐户凭据的默认登录。
• gcloud auth application-default login --impersonate-service-account 用于模拟服务帐户凭据。
• Google App Engine 内置凭据
• Google Cloud Shell 内置凭据
• Google 计算引擎内置凭据

其中似乎不包括Spring boot的application.properties。也许您可以尝试使用上述方法之一？

Answer 2

花了很多时间后，发现解决方案非常简单。在这里添加它以防有人遇到类似的问题。我使用

spring.cloud.gcp.credentials.location

属性来设置凭据，但 google cloud sql 连接工厂库 并不关心这一点。我们需要使用

gcloud auth application-default login

命令来创建凭证，gcloud 命令将其保存在您的文件夹中： /Users/your_user_name/.config/gcloud/application_default_credentials.json 。 Spring Boot 应用程序会自动选择它，无需使用 spring.cloud.gcp.credentials.location 文件进行设置。