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

Question

Sorry to bother you but I keep getting an error et I don't really understand why.

As specified in the title I'm trying to connect on my postgresql database running heroku using hibernate. My app is also running on Heroku.

It's working in local mode, I've tried several postgre drivers.

Here's my 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>

The url, password and username are overridden when I get the session :

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);

As you can see the driver is found. I'm pretty sure the url is ok too (If I try with another one I get a connection error)

Here my depedencies :

<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>

And they are exported as stated here in my pom (I can see maven is copying it when I deploye my app) :

<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>

So at this point I can't see what I've done wrong :/

Here is the error log I'm getting :

Starting process with command java -cp target/classes:target/dependency/* test.Server

State changed from starting to up

org.hibernate.annotations.common.Version

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

org.hibernate.Version logVersion

INFO: HHH000412: Hibernate Core {4.1.9.Final}

org.hibernate.cfg.Environment

INFO: HHH000206: hibernate.properties not found

org.hibernate.cfg.Environment buildBytecodeProvider

INFO: HHH000021: Bytecode provider name : javassist

org.hibernate.cfg.Configuration configure

INFO: HHH000043: Configuring from resource: /hibernate.cfg.xml

org.hibernate.cfg.Configuration getConfigurationInputStream

INFO: HHH000040: Configuration resource: /hibernate.cfg.xml

org.hibernate.cfg.Configuration doConfigure

INFO: HHH000041: Configured SessionFactory: null

=== === DRIVER FOUND === ===

============================= EXPORT SCHEMA ==========================

org.hibernate.dialect.Dialect

INFO: HHH000400: Using dialect: org.hibernate.dialect.PostgreSQLDialect

org.hibernate.tool.hbm2ddl.SchemaExport execute

INFO: HHH000227: Running hbm2ddl schema export

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

INFO: HHH000402: Using Hibernate built-in connection pool (not for production use!)

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

INFO: HHH000115: Hibernate connection pool size: 2

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

INFO: HHH000006: Autocommit mode: false

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

INFO: HHH000401: using driver [org.postgresql.Driver] at URL [jdbc:postgresql://paafeblgkhhbkx:PhZEtHl2RHwbWDQJJOurmej89-@ec2-54-243-243-252.compute-1.amazonaws.com:5432/d1vsgjgnfr1koq]

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

INFO: HHH000046: Connection properties: {user=paafeblgkhhbkx, password= * *}

org.hibernate.tool.hbm2ddl.SchemaExport execute

ERROR: HHH000231: Schema export unsuccessful

java.sql.SQLException: No suitable driver found for jdbc:postgresql://paafeblgkhhbkx:PhZEtHl2RHwbWDQJJOurmej89-@ec2-54-243-243-252.compute-1.amazonaws.com:5432/d1vsgjgnfr1koq

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

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

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

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

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

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

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

at 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)

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

Thanks for your time !

Answer 1

There is something quite suspicious with your database URL:

jdbc:postgresql://paafeblgkhhbkx:PhZEtHl2RHwbWDQJJOurmej89-@ec2-54-243-243-252.compute-1.amazonaws.com:5432/d1vsgjgnfr1koq

Breakdown:

• JDBC scheme: postgresql – OK
• hostname: paafeblgkhhbkx – suspicious
• port: PhZEtHl2RHwbWDQJJOurmej89-@ec2-54-243-243-252.compute-1.amazonaws.com – definitely wrong.

You are apparently trying to include username and password as a part of the connection URL, but that's not how it is done. These are configured using separate properties and if you are going to include them in the URI, this is how:

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

---

As a side note, I have successfully connected to your database so I can attest to the correctness of the credentials you have exposed to the public, in addition to the correct hostname. Time to change that password...