Ich werde mit einem einfachen Java-Programm zu meiner Postgre-Datenbank Heroku verbinden. Aber wenn ich versuche mich zu verbinden bekomme ich einen Fehler. Kann mir jemand das Problem erklären oder dieses Problem lösen?Kann nicht mit Heroku verbinden PostgreSQL db
Thx: D
Code:
public static void main(String[] args) throws InstantiationException,
IllegalAccessException, ClassNotFoundException {
System.out.println("-------- PostgreSQL "
+ "JDBC Connection Testing ------------");
try {
Class.forName("org.postgresql.Driver");
} catch (ClassNotFoundException e) {
System.out.println("Where is your PostgreSQL JDBC Driver? "
+ "Include in your library path!");
e.printStackTrace();
return;
}
System.out.println("PostgreSQL JDBC Driver Registered!");
Connection connection = null;
try {
// ========> from heroku website
String url = "jdbc:postgresql://ec2-107-20-214-225.compute-1.amazonaws.com:5432/databasename";
Properties props = new Properties();
props.setProperty("user", "someusername");
props.setProperty("password", "somepassword");
props.setProperty("ssl", "true");
connection = DriverManager.getConnection(url, props);
} catch (SQLException e) {
System.out.println("Connection Failed! Check output console");
e.printStackTrace();
return;
}...
Ausgang:
-------- PostgreSQL JDBC Connection Testing ------------
PostgreSQL JDBC Driver Registered!
Connection Failed! Check output console
org.postgresql.util.PSQLException: The connection attempt failed.
at org.postgresql.core.v3.ConnectionFactoryImpl.openConnectionImpl(ConnectionFactoryImpl.java:225)
at org.postgresql.core.ConnectionFactory.openConnection(ConnectionFactory.java:64)
at org.postgresql.jdbc2.AbstractJdbc2Connection.<init>(AbstractJdbc2Connection.java:138)
at org.postgresql.jdbc3.AbstractJdbc3Connection.<init>(AbstractJdbc3Connection.java:29)
...
Caused by: javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
at sun.security.ssl.Alerts.getSSLException(Alerts.java:192)
...
Siehe hier: http://stackoverflow.com/questions/9386803/problems-conne Cting-Pentaho-Kessel-Löffel-zu-Heroku-Postgresql-Using-ssl und hier: http://StackOverflow.com/Questions/11832361/How-to-setup-Spring-Heroku-Postgres-ssl-Datasource –