在GAE上运行spring hibernate应用程序时出现问题

我有一个java（Spring+maven+hibernate）应用程序，它在Google云上运行，带有云SQL。每当数据库和应用程序之间发生通信时，它就会抛出一个异常，表示无法打开连接通信失败。最后，它给了我：

Caused by: java.net.SocketException: Permission denied: Attempt to access a blocked recipient without permission. (mapped-IPv4)
    at com.google.appengine.api.socket.SocketApiHelper.translateError(SocketApiHelper.java:105)
    at com.google.appengine.api.socket.SocketApiHelper.translateError(SocketApiHelper.java:116)
    at com.google.appengine.api.socket.SocketApiHelper.makeSyncCall(SocketApiHelper.java:82)
    at com.google.appengine.api.socket.AppEngineSocketImpl.createSocket(AppEngineSocketImpl.java:497)
    at com.google.appengine.api.socket.AppEngineSocketImpl.connectToAddress(AppEngineSocketImpl.java:362)
    at com.google.appengine.api.socket.AppEngineSocketImpl.connect(AppEngineSocketImpl.java:352)
    at java.net.Socket.connect(Socket.java:600)
    at java.net.Socket.connect(Socket.java:537)
    at java.net.Socket.<init>(Socket.java:434)
    at java.net.Socket.<init>(Socket.java:250)
    at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259)
    at com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:300)
    ... 113 more

org.springframework.transaction.CannotCreateTransactionException: Could not open Hibernate Session for transaction; nested exception is org.hibernate.exception.JDBCConnectionException: Could not open connection
    at org.springframework.orm.hibernate4.HibernateTransactionManager.doBegin(HibernateTransactionManager.java:440)
    at org.springframework.transaction.support.AbstractPlatformTransactionManager.getTransaction(AbstractPlatformTransactionManager.java:371)
    at org.springframework.transaction.interceptor.TransactionAspectSupport.createTransactionIfNecessary(TransactionAspectSupport.java:334)
    at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:105)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
    at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
    at com.sun.proxy.$Proxy38.loadAdminLoginFromDetails(Unknown Source)
    at com.bullbeardevice.service.impl.CustomAuthenticationManager.authenticate(CustomAuthenticationManager.java:47)

---

部署应用程序时，它将检查访问云SQL的授权（即您访问云SQL的授权）

当首次进行授权时，它将在windows注册表中存储OAUTH访问令牌。因此，从第二次开始，它将直接从注册表获取访问令牌

如果此令牌已更改或过期，则会出现上述错误。因此，您需要删除旧令牌并再次授权

按照以下步骤从注册表中删除令牌

打开运行并键入regedit，然后单击打开

它将打开注册表编辑器窗口

然后扩大,， HKEY_当前用户->软件->Javasoft->Prefs->com->谷歌->云->Sqlservice->oAuth2

右手边你们可以看到谷歌誓言令牌。 删除除默认标记外的标记

现在，如果部署项目，它将要求您进行授权。它将部署

---

希望这对您有所帮助。

请建议我从过去两天以来一直在努力解决此问题。您正在通过

应用程序引擎连接，对吗？您的连接字符串应该如下所示：
jdbc:google:mysql://your-project-id:your-实例名称/db name？user=root
，根据。此外，默认情况下，除非手动更改
root@localhost
密码。最后，请确保您的
appengine
应用程序在云控制台的访问控制部分被列入白名单。嗨，juan，我已经更改了根密码。并授权我的应用访问云sql实例。用户连接字符串也由其不工作引起。同样的错误。请帮助我，我已经在这方面浪费了很多时间。你是如何更改根密码的？请注意，云控制台中更改root密码的UI是针对MySQL
root@%
用户的。这与
root@localhost
应用程序引擎用于连接的用户。
 <!-- Hibernate Session Factory -->
<bean id="propertyConfigurer"
        class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
        <property name="locations">
            <list>
                <value>classpath:database.properties</value>
            </list>
        </property>
    </bean>

    <bean id="dataSource"
        class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName" value="${db.driverClassName}" />
        <property name="url" value="${db.url}" />
        <property name="username" value="${db.username}" />
        <property name="password" value="${db.password}" />
    </bean>

    <bean id="sessionFactory"
        class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
        <property name="dataSource" ref="dataSource" />
        <property name="packagesToScan" value="com.abc.model" />
        <property name="hibernateProperties">
            <props>
            <prop key="hibernate.dialect">${hibernate.dialect}</prop>
                <prop key="hibernate.show_sql">${hibernate.show_sql}</prop>
                <prop key="hibernate.jdbc.batch_size">100</prop>
                <!-- <prop key="hibernate.hbm2ddl.auto">create-drop</prop>  -->
                <prop key="hibernate.current_session_context_class">
                    org.springframework.orm.hibernate4.SpringSessionContext
                </prop>
                <!-- configuration pool via c3p0 -->
                <prop key="hibernate.c3p0.acquire_increment">5</prop>
                <prop key="hibernate.c3p0.idle_test_period">600</prop>
                <prop key="hibernate.c3p0.max_size">25</prop>
                <prop key="hibernate.c3p0.max_statements">25</prop>
                <prop key="hibernate.c3p0.min_size">5</prop>
                <prop key="hibernate.c3p0.timeout">300</prop>
                <prop key="hibernate.connection.release_mode">auto</prop>
                <prop key="hibernate.auto_close_session">true</prop>
            </props>
        </property>
    </bean>
    <bean id="transactionManager"
        class="org.springframework.orm.hibernate4.HibernateTransactionManager">
        <property name="sessionFactory" ref="sessionFactory" />
    </bean>
  <tx:annotation-driven transaction-manager="transactionManager"/>
  </beans>

#db.driverClassName=com.mysql.jdbc.Driver
db.driverClassName=com.google.appengine.api.rdbms.AppEngineDriver
#db.url=jdbc:mysql://192.168.1.3:3306/abc
db.url=jdbc:google:rdbms://xxxx:xxxx/xxxx
#db.url=jdbc:Oracle:thin:@127.0.0.1:1521/XE
db.username=root
db.password=root
#hibernate.dialect=org.hibernate.dialect.MySQL5Dialect
hibernate.dialect=org.hibernate.dialect.MySQLDialect
hibernate.show_sql=true
hibernate.cache.use_second_level_cache=false
hibernate.cache.use_query_cache=false
#hibernate.cache.provider_class=net.sf.ehcache.hibernate.EhCacheProvider
#hibernate.cache.provider_class==org.hibernate.cache.EhCacheProvider
#db.sid=XE
# configuration for hibernate search
hibernate.search.default.locking_strategy=simple
#hibernate.search.analyzer=org.apache.lucene.analysis.en.EnglishAnalyzer
hibernate.search.worker.batch_size=100
hibernate.search.indexing_strategy = manual
hibernate.search.default.reader.strategy = shared
hibernate.search.default.worker.thread_pool.size=30
hibernate.search.default.indexwriter.ram_buffer_size=10
hibernate.search.default.indexwriter.merge_max_optimize_size=7
hibernate.search.default.indexwriter.merge_max_size=7