我將用一個簡單的java程序連接到我的heroku Postgres數據庫。但是,如果我嘗試連接,我得到一個錯誤。任何人都可以解釋我的問題或可以解決這個問題嗎?無法連接到heroku PostgreSQL db
THX:d
代碼:
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;
}...
輸出:
-------- 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)
...
請參閱:http://stackoverflow.com/questions/9386803/problems-conne cting-pentaho-kettle-spoon-to-heroku-postgresql -using-ssl和這裏:http://stackoverflow.com/questions/11832361/how-to-setup-spring-heroku-postgres-ssl-datasource –