I've tried integrate de Endpoints with Cloud SQL and Hibernate. But, everytime a have a error. Follow my tests:
我尝试将de Endpoints与Cloud SQL和Hibernate集成。但是，每次都有错误。按照我的测试：
1 - persistence.xml in source folder: http://imgur.com/hKjf8Cs Give-me the error: http://imgur.com/QJe8rvq
1 - 源文件夹中的persistence.xml：http：//imgur.com/hKjf8Cs给我错误：http：//imgur.com/QJe8rvq
2 - persistence.xml in resources folder give me the error:
2 - resources文件夹中的persistence.xml给出了错误：
javax.persistence.PersistenceException: No Persistence provider for EntityManager named gegAdminPU at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:69) at br.com.gegsystems.gegadmin.utils.HibernateUtils.(HibernateUtils.java:47) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:188) at com.google.appengine.tools.development.agent.runtime.RuntimeHelper.checkRestricted(RuntimeHelper.java:70) at com.google.appengine.tools.development.agent.runtime.Runtime.checkRestricted(Runtime.java:64) at br.com.gegsystems.gegadmin.endpoints.ClienteEndpoint.(ClienteEndpoint.java:20) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:266) at com.google.api.server.spi.ServletInitializationParameters.getClassForName(ServletInitializationParameters.java:82) at com.google.api.server.spi.ServletInitializationParameters.fromServletConfig(ServletInitializationParameters.java:51) at com.google.api.server.spi.SystemServiceServlet.init(SystemServiceServlet.java:102) at org.mortbay.jetty.servlet.ServletHolder.initServlet(ServletHolder.java:440) at org.mortbay.jetty.servlet.ServletHolder.getServlet(ServletHolder.java:339) at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487) 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:127) 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:98) at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152) at com.google.appengine.tools.development.JettyContainerService$ApiProxyHandler.handle(JettyContainerService.java:491) at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152) at org.mortbay.jetty.Server.handle(Server.java:326) at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542) at org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:938) at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:755) at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:218) at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404) at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:409) at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)
javax.persistence.PersistenceException：否EntityManager的持久性提供者在javax.persistence.Persistence.createEntityManagerFactory（Persistence.java:69）在br.com.gegsystems.gegadmin.utils.HibernateUtils命名gegAdminPU（HibernateUtils.java:47）在爪哇。 .lang.Class.forName0（本地方法）在java.lang.Class.forName（Class.java:188）在com.google.appengine.tools.development.agent.runtime.RuntimeHelper.checkRestricted（RuntimeHelper.java:70）在com.google.appengine.tools.development.agent.runtime.Runtime.checkRestricted（Runtime.java:64）在br.com.gegsystems.gegadmin.endpoints.ClienteEndpoint。（ClienteEndpoint.java:20）在java.lang中。 Class.forName0（本地方法）在java.lang.Class.forName（Class.java:266）在com.google.api.server.spi.ServletInitializationParameters.getClassForName（ServletInitializationParameters.java:82）在com.google.api。 com.google.api.server.spi.SystemServiceServ上的server.spi.ServletInitializationParameters.fromServletConfig（ServletInitializationParameters.java:51） let.init（SystemServiceServlet.java:102）在org.mortbay.jetty.servlet.ServletHolder.initServlet（ServletHolder.java:440）在org.mortbay.jetty.servlet.ServletHolder.getServlet（ServletHolder.java:339）在组织.mortbay.jetty.servlet.ServletHolder.handle（ServletHolder.java:487）在org.mortbay.jetty.servlet.ServletHandler $ CachedChain.doFilter（ServletHandler.java:1166）在com.google.appengine.api.socket.dev .DevSocketFilter.doFilter（DevSocketFilter.java:74）在org.mortbay.jetty.servlet.ServletHandler $ CachedChain.doFilter（ServletHandler.java:1157）在com.google.appengine.tools.development.ResponseRewriterFilter.doFilter（ResponseRewriterFilter.java ：127）在org.mortbay.jetty.servlet.ServletHandler $ CachedChain.doFilter（ServletHandler.java:1157）在com.google.appengine.tools.development.HeaderVerificationFilter.doFilter（HeaderVerificationFilter.java:34）在org.mortbay。 com.google.appengine.api.blobstore.dev.ServeBlobFilter.d中的jetty.servlet.ServletHandler $ CachedChain.doFilter（ServletHandler.java:1157） oFilter（ServeBlobFilter.java:63）在org.mortbay.jetty.servlet.ServletHandler $ CachedChain.doFilter（ServletHandler.java:1157）在com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter（TransactionCleanupFilter.java:43）在org.mortbay.jetty.servlet.ServletHandler $ CachedChain.doFilter（ServletHandler.java:1157）在com.google.appengine.tools.development.StaticFileFilter.doFilter（StaticFileFilter.java:125）在org.mortbay.jetty.servlet .ServletHandler $ CachedChain.doFilter（ServletHandler.java:1157）位于com.google.appengine.tools.development.DevAppServerModulesFilter.doDirectRequest（DevAppServerModulesFilter.java:366）com.google.appengine.tools.development.DevAppServerModulesFilter.doDirectModuleRequest（DevAppServerModulesFilter）的.java：349）在com.google.appengine.tools.development.DevAppServerModulesFilter.doFilter（DevAppServerModulesFilter.java:116）在org.mortbay.jetty.servlet.ServletHandler $ CachedChain.doFilter（ServletHandler.java:1157）的组织。 mortbay.jetty.servlet.ServletHandle r.handle（ServletHandler.java:388）在org.mortbay.jetty.security.SecurityHandler.handle（SecurityHandler.java:216）在org.mortbay.jetty.servlet.SessionHandler.handle（SessionHandler.java:182）在组织.mortbay.jetty.handler.ContextHandler.handle（ContextHandler.java:765）在org.mortbay.jetty.webapp.WebAppContext.handle（WebAppContext.java:418）在com.google.appengine.tools.development.DevAppEngineWebAppContext.handle （DevAppEngineWebAppContext.java:98）在org.mortbay.jetty.handler.HandlerWrapper.handle（HandlerWrapper.java:152）在com.google.appengine.tools.development.JettyContainerService $ ApiProxyHandler.handle（JettyContainerService.java:491）在org.mortbay.jetty.handler.HandlerWrapper.handle（HandlerWrapper.java:152）在org.mortbay.jetty.Server.handle（Server.java:326）在org.mortbay.jetty.HttpConnection.handleRequest（HttpConnection.java： 542）在org.mortbay.jetty.HttpConnection $ RequestHandler.content（HttpConnection.java:938）在org.mortbay.jetty.HttpParser.parseNext（HttpParser.java:755）的组织。 mortbay.jetty.HttpParser.parseAvailable（HttpParser.java:218）在org.mortbay.jetty.HttpConnection.handle（HttpConnection.java:404）在org.mortbay.io.nio.SelectChannelEndPoint.run（SelectChannelEndPoint.java:409）在org.mortbay.thread.QueuedThreadPool $ PoolThread.run（QueuedThreadPool.java:582）
Follow the Endpoint code and HibernateUtils:
遵循端点代码和HibernateUtils：
@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<String>();
EntityManager em = entityManagerFactory.createEntityManager();
em.getTransaction().begin();
resultado.add((String) em.createQuery("SELECT 'teste' FROM dual;").getSingleResult());
return resultado;
}
}
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);
}
}
1 个解决方案
#1
0
I've changed the persistence framework from Hibernate to EclipseLink and work. I think that was a problem in the configuration of my Eclipse with Hibernate and JPA.
我已经将持久性框架从Hibernate更改为EclipseLink并且工作正常。我认为这是我的Eclipse配置Hibernate和JPA的一个问题。
#1
0
I've changed the persistence framework from Hibernate to EclipseLink and work. I think that was a problem in the configuration of my Eclipse with Hibernate and JPA.
我已经将持久性框架从Hibernate更改为EclipseLink并且工作正常。我认为这是我的Eclipse配置Hibernate和JPA的一个问题。