Maven GAE 插件 + Google Cloud SQL 出错

这是我的插件配置：

<plugin>
                <groupId>net.kindleit</groupId>
                <artifactId>maven-gae-plugin</artifactId>
                <version>0.7.3</version>
                <dependencies>
                  <dependency>
                    <groupId>net.kindleit</groupId>
                    <artifactId>gae-runtime</artifactId>
                    <version>${gae.version}</version>
                    <type>pom</type>
                  </dependency>
                </dependencies>
                <configuration>
                    <jvmFlags>
                        <jvmFlag>-Drdbms.server=local</jvmFlag>
                        <jvmFlag>-Drdbms.driver=com.mysql.jdbc.Driver</jvmFlag>
                        <jvmFlag>-Drdbms.url=jdbc:mysql://localhost:3306/prova?user=root&amp;password=pass</jvmFlag>
                    </jvmFlags>
                    <serverId>appengine.google.com</serverId>
                </configuration>
            </plugin>

你可以在这里阅读更多：https://developers.google.com/cloud-sql/docs/developers_guide_java https://developers.google.com/cloud-sql/docs/developers_guide_java

首先我有这个小错误，做mvn gae:run

java.lang.ClassNotFoundException: com.mysql.jdbc.Driver

所以我将“真正的”驱动程序添加到我的 pom.xml 中：

<dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <version>5.1.18</version>
    </dependency>

没有结果。错误仍然相同。

堆栈跟踪的一部分：

java.lang.ClassNotFoundException: com.mysql.jdbc.Driver
    at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
    at com.google.appengine.tools.development.DevAppServerClassLoader.loadClass(DevAppServerClassLoader.java:87)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:169)
    at com.google.appengine.api.rdbms.dev.LocalRdbmsServiceLocalDriver.registerDriver(LocalRdbmsServiceLocalDriver.java:84)
    at com.google.appengine.api.rdbms.dev.LocalRdbmsServiceLocalDriver.init(LocalRdbmsServiceLocalDriver.java:73)
    at com.google.appengine.api.rdbms.dev.LocalRdbmsService.init(LocalRdbmsService.java:85)

edit:

我的新插件配置：

<plugin>
                <groupId>net.kindleit</groupId>
                <artifactId>maven-gae-plugin</artifactId>
                <version>0.9.2</version>
                <dependencies>
                  <dependency>
                    <groupId>net.kindleit</groupId>
                    <artifactId>gae-runtime</artifactId>
                    <version>${gae.version}</version>
                    <type>pom</type>
                  </dependency>
                  <dependency>
                    <groupId>mysql</groupId>
                    <artifactId>mysql-connector-java</artifactId>
                    <version>5.1.18</version>
                </dependency>
                </dependencies>
                <configuration>
                    <jvmFlags>
                        <jvmFlag>-Drdbms.server=local</jvmFlag>
                        <jvmFlag>-Drdbms.driver=com.mysql.jdbc.Driver</jvmFlag>
                        <jvmFlag>-Drdbms.url=jdbc:mysql://localhost:3306/prova?user=root&amp;password=pass</jvmFlag>
                    </jvmFlags>
                    <serverId>appengine.google.com</serverId>
<!--                     <sdkDir>${appengine.sdk.root}</sdkDir> -->
<!--                     <appDir>${basedir}/war</appDir> -->
                </configuration>
            </plugin>

好吧，我解决了。我手动放置mysql-connector-java-5.1.18-bin.jar在我的 sdk 文件夹中：

 file:///opt/appengine-java-sdk-1.6.0/lib/impl/

错误改得更舒服：

java.sql.SQLException: Access denied for user 'root'@'localhost' (using password: YES)

不过还是谢谢你的建议