Google Cloud SQL连接

Question

我正在尝试连接到Google Cloud SQL。 几天前，我能够成功做到这一点，但是现在，我面临着一些问题。 发生的问题是

正在加载com.mysql.jdbc.Driver'. This is deprecated. The new driver class is类com.mysql.jdbc.Driver'. This is deprecated. The new driver class is com.mysql.jdbc.Driver'. This is deprecated. The new driver class is com.mysql.jdbc.Driver'. This is deprecated. The new driver class is com.mysql.cj.jdbc.Driver'。 通过SPI自动注册驱动程序，通常不需要手动加载驱动程序类。

由于它会自动加载com.mysql.cj.jdbc.Driver，因此出现以下错误：

java.sql.SQLNonTransientConnectionException: Could not create connection to database server.
    at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:676)
    at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:663)
    at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:653)
    at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:638)
    at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:606)
    at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:1837)
    at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:1653)
    at com.mysql.cj.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:662)
    at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:352)
    at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:221)
    at java.sql.DriverManager.getConnection(DriverManager.java:664)
    at java.sql.DriverManager.getConnection(DriverManager.java:270)
    at com.example.endpoints.insertUser.doPost(insertUser.java:160)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
    at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:821)
    at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:583)
    at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
    at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:548)
    at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:226)
    at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1158)
    at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:511)
    at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185)
    at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1090)
    at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
    at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:213)
    at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:109)
    at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:119)
    at org.eclipse.jetty.server.Server.handle(Server.java:517)
    at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:306)
    at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:242)
    at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:261)
    at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:95)
    at org.eclipse.jetty.io.SelectChannelEndPoint$2.run(SelectChannelEndPoint.java:75)
    at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceAndRun(ExecuteProduceConsume.java:213)
    at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.run(ExecuteProduceConsume.java:147)
    at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:654)
    at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:572)
    at java.lang.Thread.run(Thread.java:745)

**Caused by: java.lang.ClassCastException: com.google.cloud.sql.mysql.SocketFactory cannot be cast to com.mysql.cj.api.io.SocketFactory**


    at com.mysql.cj.core.io.AbstractSocketConnection.createSocketFactory(AbstractSocketConnection.java:129)
    at com.mysql.cj.mysqla.io.MysqlaSocketConnection.connect(MysqlaSocketConnection.java:56)
    at com.mysql.cj.mysqla.MysqlaSession.connect(MysqlaSession.java:144)
    at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:1783)
    ... 33 more

检查粗体部分。

我用来建立连接的网址是：-

"jdbc:mysql://google/*****?cloudSqlInstance=******&socketFactory=com.google.cloud.sql.mysql.SocketFactory&user=****&password=****&useSSL=true"

Answer 1

我认为问题是您使用的mysql-socket-factory具有com.google.cloud.sql.mysql.SocketFactory类实现com.mysql.jdbc.SocketFactory
试试这个： mysql-socket-factory-connector-j-6

Answer 2

我有一个非常相似的问题，可能有相同的根本原因

com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Could not create socket factory 'com.google.cloud.sql.mysql.SocketFactory' due to underlying exception: 
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
...
Caused by: java.lang.ClassCastException: com.google.cloud.sql.mysql.SocketFactory cannot be cast to com.mysql.jdbc.SocketFactory
    at com.mysql.jdbc.MysqlIO.createSocketFactory(MysqlIO.java:3324)
    ... 80 more

因为我之前所有工作都进行了，所以这很奇怪。

原来我的wifi连接位于错误的网络上，并且没有连接。 修复网络连接后，数据库连接又恢复了。 确保尝试启用和禁用wifi。 是的，对于实际问题，非常令人困惑的错误。

希望这可以帮助遇到同样问题的人。

Answer 3

如果您使用以下依赖项

<dependency>
  <groupId>mysql</groupId>
  <artifactId>mysql-connector-java</artifactId>
  <version>*.*.*</version>
</dependency>
<dependency>
  <groupId>com.google.cloud.sql</groupId>
  <artifactId>mysql-socket-factory</artifactId>
  <version>*.*.*</version>
</dependency>

改用这个启动器

<dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-gcp-starter-sql-mysql</artifactId>
    <version>1.0.0.RELEASE</version>
</dependency>