GAE-使用谷歌云SQL的谷歌endpoint

Question

我尝试过将deendpoint与云SQL和Hibernate集成。但是，每次都有错误。跟随我的测试:

1 -源文件夹中的persistence . XML:http://imgur.com/hKjf8Cs给我错误:http://imgur.com/QJe8rvq

2-资源文件夹中的persistence.xml给我错误：

ServletInitializationParameters.java:51：EntityManager没有名为gegAdminPU的持久性提供程序，com.google.api.server.spi.SystemServiceServlet.init（SystemServiceServlet.java:102）org.mortbay.jetty.servlet.ServletHolder.initServlet（ServletHolder.java:440）java.lang.Class.forName0（本机方法）java.lang.Class.forName（org.mortbay.jetty.servlet.ServletHolder.handle）ServletHolder.java:487（org.mortbay.jetty.servlet.ServletHandler）CachedChain.doFilter（ServletHandler.java:1166）com.google.appengine.api.socket.dev.DevSocketFilter.doFilter（ClienteEndpoint.java:20）java.lang.Class.forName0（本机方法）java.lang.Class.forName（Class.java:266）com.google.api.server.spi.ServletInitializationParameters.getClassForName（ServletInitializationParameters.java:82）com.google.api.server.spi.ServletInitializationParameters.fromServletConfig（javax.persistence.PersistenceException）javax.persistence.Persistence.createEntityManagerFactory（Persistence.java:69）br.com.gegsystems.gegadmin.utils.HibernateUtils.（HibernateUtils.java:47）Class.java:188（com.google.appengine.tools.development.agent.runtime.RuntimeHelper.checkRestricted）RuntimeHelper.java:70com.google.appengine.tools.development.agent.runtime.Runtime.checkRestricted（Runtime.java:64）br.com.gegsystems.gegadmin.endpoints.ClienteEndpoint.（DevSocketFilter. java： 74）在com. google. app工程. tools. Development. DevAppServerModulesFilter. doDirectRequest（DevAppServerModulesFilter. java： 366）在com. google. app工程. tools. Development. DevAppServerModulesFilter. doDirectModuleRequest（DevAppServerModulesFilter. java： 349）在com. google. app工程. tools. DevAppServerModulesFilter. doFilter（DevAppServerModulesFilter. java： 116）在org. Morbay. jetty. servlet. ServletHandler$CachedChain. doFilter（ServletHandler. java： 1157）在org. Morbay. jetty. servletHandler. hand（ServletHandler. java： 388）在org. Morbay. jetty. securityHandler. hand（SecurityHandler. java： 216）

按照终端节点代码操作：

@Api(name="clientes", version="v1")
public class ClienteEndpoint {

    private static EntityManagerFactory entityManagerFactory;

    static {
        entityManagerFactory = HibernateUtils.getEntityManagerFactory();
    }

    @ApiMethod(name="listar", path="clientes")
    public List<String> listar(){
        List<String> resultado = new ArrayList<>();
        EntityManager em = entityManagerFactory.createEntityManager();

        em.getTransaction().begin();

        Query query = em.createQuery("SELECT 'teste' FROM dual;");
        resultado.add((String) query.getSingleResult());

        return resultado;
    }
}

HibernateUtils.java：

import com.google.appengine.api.rdbms.AppEngineDriver;
import com.google.appengine.api.utils.SystemProperty;

public class HibernateUtils {

    private static final EntityManagerFactory entityManagerFactory;

    public static EntityManagerFactory getEntityManagerFactory() {
        return entityManagerFactory;
    }

    static {
        try {
            DriverManager.registerDriver(new AppEngineDriver());
        } catch (SQLException e) {
            throw new ExceptionInInitializerError(e);
        }

        Map<String, String> properties = new HashMap<>();
        if (SystemProperty.environment.value() ==
                SystemProperty.Environment.Value.Production) {
            properties.put("javax.persistence.jdbc.driver",
                    "com.mysql.jdbc.GoogleDriver");
            properties.put("javax.persistence.jdbc.url", System.getProperty(
                    "jdbc:google:mysql://**********:*******/gegadmin?user=root")
            );
            properties.put("javax.persistence.jdbc.password",
                    System.getProperty("**********"));
        } else {
            properties.put("hibernate.connection.driver_class",
                    "com.mysql.jdbc.Driver");
            properties.put("hibernate.connection.url", System.getProperty(
                    "jdbc:mysql://localhost:3306/gegadmin?user=root")
            );
            properties.put("hibernate.connection.password",
                    System.getProperty("**********"));
        }

        entityManagerFactory = Persistence
                .createEntityManagerFactory("gegAdminPU", properties);
    }
}

Answer 1

我已经将持久性框架从Hibernate更改为Eclipse Link和work。我认为这是我的Eclipse与Hibernate和JPA的配置中的一个问题。