没有合适的司机.尝试使用Hibernate连接到Heroku上的postgresql数据库

Question

很抱歉打扰你,但我一直收到错误,我不明白为什么.

正如标题中所指定的,我正在尝试使用hibernate在运行heroku的postgresql数据库上进行连接.我的应用程序也在Heroku上运行.

它在本地模式下工作,我尝试了几个postgre驱动程序.

这是我的hibernate.cfg.xml:

<!-- PostgreSQL -->

<property name="connection.url">jdbc:postgresql://paafeblgkhhbkx:PhZEtHl2RHwbWDQJJOurmej89-@ec2-54-243-243-252.compute-1.amazonaws.com:5432/d1vsgjgnfr1koq</property>

<property name="connection.username">paafeblgkhhbk</property>

<property name="connection.password">My password</property>

<property name="connection.driver_class">org.postgresql.Driver</property>

<property name="dialect">org.hibernate.dialect.PostgreSQLDialect</property>

<!-- Disable the second-level cache  -->
<property name="cache.provider_class">org.hibernate.cache.internal.NoCacheProvider</property>

<!-- Echo all executed SQL to stdout -->
<property name="show_sql">true</property>
<!-- Drop and re-create the database schema on startup -->
<property name="hbm2ddl.auto">create</property>

我收到会话时会覆盖网址,密码和用户名:

Configuration configuration = new Configuration();
configuration.addAnnotatedClass(Client.class);
// and other classes

try {  
    Class.forName("org.postgresql.Driver"); 
    System.out.println(" === === DRIVER FOUND === === ");   
} catch (ClassNotFoundException e) {
    e.printStackTrace();
    System.out.println(" === === DRIVER NOT FOUND === === ");
}
configuration.configure();
System.out.println("============================= EXPORT SCHEMA ==========================");
new SchemaExport(configuration).create(true, true);
serviceRegistry = new ServiceRegistryBuilder().applySettings(configuration.getProperties()).buildServiceRegistry();
sessionFactory = configuration.buildSessionFactory(serviceRegistry);

如您所见,找到了驱动程序.我很确定网址也可以(如果我尝试另一个网址,我会收到连接错误)

在这里我的依赖:

<dependency>
    <groupId>org.hibernate</groupId>
    <artifactId>hibernate-core</artifactId>
    <version>4.1.9.Final</version>
</dependency>
<dependency>
    <groupId>postgresql</groupId>
    <artifactId>postgresql</artifactId>
    <version>9.1-901.jdbc4</version>
</dependency>

它们按照我的pom中的说明导出(我可以看到maven在部署我的应用程序时正在复制它):

<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-dependency-plugin</artifactId>
<version>2.4</version>
<executions>
    <execution>
        <id>copy-dependencies</id>
        <phase>package</phase>
        <goals><goal>copy-dependencies</goal></goals>
    </execution>
</executions>
</plugin>

所以在这一点上我看不出我做错了什么:/

这是我得到的错误日志:

使用命令启动进程 java -cp target/classes:target/dependency/* test.Server

国家从开始变为上升

org.hibernate.annotations.common.Version

信息:HCANN000001:Hibernate Commons Annotations {4.0.1.Final}

org.hibernate.Version logVersion

信息:HHH000412:Hibernate Core {4.1.9.Final}

org.hibernate.cfg.Environment中

信息:HHH000206:找不到hibernate.properties

org.hibernate.cfg.Environment buildBytecodeProvider

信息:HHH000021:字节码提供程序名称:javassist

org.hibernate.cfg.Configuration配置

信息:HHH000043:从资源配置:/hibernate.cfg.xml

org.hibernate.cfg.Configuration getConfigurationInputStream

信息:HHH000040:配置资源:/hibernate.cfg.xml

org.hibernate.cfg.Configuration doConfigure

信息:HHH000041:已配置的SessionFactory:null

=== ===找到了驾驶员=== ===

=============================出口计划=================== =======

的org.hibernate.dialect.Dialect

信息:HHH000400:使用方言:org.hibernate.dialect.PostgreSQLDialect

org.hibernate.tool.hbm2ddl.SchemaExport执行

信息:HHH000227:运行hbm2ddl架构导出

org.hibernate.service.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure

信息:HHH000402:使用Hibernate内置连接池(不供生产使用!)

org.hibernate.service.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure

信息:HHH000115:Hibernate连接池大小:2

org.hibernate.service.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure

信息:HHH000006:自动提交模式:false

org.hibernate.service.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure

信息:HHH000401:在URL上使用驱动程序[org.postgresql.Driver] [jdbc:postgresql:// paafeblgkhhbkx:PhZEtHl2RHwbWDQJJOurmej89-@ec2-54-243-243-252.compute-1.amazonaws.com:5432/d1vsgjgnfr1koq]

org.hibernate.service.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure

信息:HHH000046:连接属性:{user = paafeblgkhhbkx,password = **}

org.hibernate.tool.hbm2ddl.SchemaExport执行

错误:HHH000231:架构导出失败

java.sql.SQLException:没有为jdbc找到合适的驱动程序:postgresql:// paafeblgkhhbkx:PhZEtHl2RHwbWDQJJOurmej89-@ec2-54-243-243-252.compute-1.amazonaws.com:5432/d1vsgjgnfr1koq

在java.sql.DriverManager.getConnection(DriverManager.java:640)

在java.sql.DriverManager.getConnection(DriverManager.java:169)

在org.hibernate.service.jdbc.connections.internal.DriverManagerConnectionProviderImpl.getConnection(DriverManagerConnectionProviderImpl.java:193)

在org.hibernate.tool.hbm2ddl.ManagedProviderConnectionHelper.prepare(ManagedProviderConnectionHelper.java:55)

在org.hibernate.tool.hbm2ddl.DatabaseExporter.(DatabaseExporter.java:52)

在org.hibernate.tool.hbm2ddl.SchemaExport.execute(SchemaExport.java:367)

在org.hibernate.tool.hbm2ddl.SchemaExport.create(SchemaExport.java:304)

在org.hibernate.tool.hbm2ddl.SchemaExport.create(SchemaExport.java:293)

at persistance.SessionFactorySingleton.configureSessionFactory(SessionFactorySingleton.java:36)

at persistance.SessionFactorySingleton.getSessionFactory(SessionFactorySingleton.java:61)

at persistance.Controller.beginSession(Controller.java:24)

at persistance.Controller.sauvegarde(Controller.java:36)

at persistance.Controller.save(Controller.java:51)

at test.Server $ 1.handle(Server.java:44)

at com.sun.net.httpserver.Filter $ Chain.doFilter(Filter.java:83)

at sun.net.httpserver.AuthFilter.doFilter(AuthFilter.java:83)

at com.sun.net.httpserver.Filter $ Chain.doFilter(Filter.java:86)

at sun.net.httpserver.ServerImpl $ Exchange $ LinkHandler.handle(ServerImpl.java:589)

at com.sun.net.httpserver.Filter $ Chain.doFilter(Filter.java:83)

at sun.net.httpserver.ServerImpl $ Exchange.run(ServerImpl.java:561)

at sun.net.httpserver.ServerImpl $ DefaultExecutor.execute(ServerImpl.java:137)

at sun.net.httpserver.ServerImpl $ Dispatcher.handle(ServerImpl.java:367)

at sun.net.httpserver.ServerImpl $ Dispatcher.run(ServerImpl.java:339)

在java.lang.Thread.run(Thread.java:679)

谢谢你的时间 !

Answer 1

您的数据库网址存在一些可疑之处:

JDBC:在PostgreSQL:// paafeblgkhhbkx:PhZEtHl2RHwbWDQJJOurmej89-@ec2-54-243-243-252.compute-1.amazonaws.com:5432/d1vsgjgnfr1koq

分解:

• JDBC方案:postgresql- 好的
• 主机名:paafeblgkhhbkx- 可疑
• 端口:PhZEtHl2RHwbWDQJJOurmej89-@ec2-54-243-243-252.compute-1.amazonaws.com- 绝对错了.

您显然试图将用户名和密码作为连接URL的一部分包含在内,但这不是它的完成方式.这些是使用单独的属性进行配置,如果你是要包括他们在URI,这是怎么了:

jdbc:postgresql://localhost/test?user=fred&password=secret

作为旁注,我已成功连接到您的数据库,因此除了正确的主机名外,我还可以证明您向公众公开的凭据的正确性.是时候更改密码了......