谷歌云-SQL无法获得与数据库

Question

进出口新的Cloud SQL执行可以请你帮我解决同
我我现有的项目

这是样品一个我在使用云SQL创建的实例连接已经创造出来了。

我的servlet代码包含以下连接详细信息：

 Class.forName("com.mysql.jdbc.GoogleDriver"); 
    url = "jdbc:google:mysql://shobhas-helloworld:shobhas-db/shoba?user=root"; 

    Connection conn = (Connection) DriverManager.getConnection(url); 

错误：

java.lang.ClassNotFoundException: com.mysql.jdbc.GoogleDriver 
     at java.net.URLClassLoader$1.run(Unknown Source) 
     at java.net.URLClassLoader$1.run(Unknown Source) 
     at java.security.AccessController.doPrivileged(Native Method) 
     at java.net.URLClassLoader.findClass(Unknown Source) 
     at java.lang.ClassLoader.loadClass(Unknown Source) 
     at com.google.appengine.tools.development.IsolatedAppClassLoader.loadClass(IsolatedAppClassLoader.java:216) 
     at java.lang.ClassLoader.loadClass(Unknown Source) 
     at java.lang.Class.forName0(Native Method) 
     at java.lang.Class.forName(Unknown Source) 
     at com.example.shobhashelloworld.LoginServlet.doGet(LoginServlet.java:43) 
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:617) 
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) 
     at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511) 
     at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1166) 
     at com.google.appengine.api.socket.dev.DevSocketFilter.doFilter(DevSocketFilter.java:74) 
     at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157) 
     at com.google.appengine.tools.development.ResponseRewriterFilter.doFilter(ResponseRewriterFilter.java:123) 
     at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157) 
     at com.google.appengine.tools.development.HeaderVerificationFilter.doFilter(HeaderVerificationFilter.java:34) 
     at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157) 
     at com.google.appengine.api.blobstore.dev.ServeBlobFilter.doFilter(ServeBlobFilter.java:63) 
     at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157) 
     at com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(TransactionCleanupFilter.java:43) 
     at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157) 
     at com.google.appengine.tools.development.StaticFileFilter.doFilter(StaticFileFilter.java:125) 
     at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157) 
     at com.google.appengine.tools.development.DevAppServerModulesFilter.doDirectRequest(DevAppServerModulesFilter.java:366) 
     at com.google.appengine.tools.development.DevAppServerModulesFilter.doDirectModuleRequest(DevAppServerModulesFilter.java:349) 
     at com.google.appengine.tools.development.DevAppServerModulesFilter.doFilter(DevAppServerModulesFilter.java:116) 
     at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157) 
     at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:388) 
     at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216) 
     at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182) 
     at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765) 
     at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:418) 
     at com.google.appengine.tools.development.DevAppEngineWebAppContext.handle(DevAppEngineWebAppContext.java:97) 
     at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152) 

Answer 1

这看起来像你的应用程序在开发应用程序服务器上运行。 你可以看看App Engine documentation？其中的代码片段包含有关如何在开发期间连接到本地数据库或远程Cloud SQL实例的示例。

Answer 2

当AppEngine上运行的应用程序，请确保driver is enabled