title: SchemaSpy PostgreSQL - WARN - Connection Failure
body: <p>I try to connect to my PostgresSQL server using SchemaSpy. I installed Java using <code>oracle-java8-installer</code> from <code>ppa:webupd8team/java.</code></p>
  
  <p>(My PostgreSQL server works on Docker container so I forward port to 5431)</p>
  
  <p>My <code>schemaspy.properties</code> file is:</p>
  
  <pre><code># type of database. Run with -dbhelp for details
  schemaspy.t=pgsql
  # optional path to alternative jdbc drivers.
  # database properties: host, port number, name user, password
  schemaspy.host=localhost:5431
  schemaspy.port=5431
  schemaspy.db=dbname
  schemaspy.u=dbuser
  schemaspy.p=dbpassword
  # output dir to save generated files
  schemaspy.o=dbschema
  # db scheme for which generate diagrams
  schemaspy.s=public
  </code></pre>
  
  <p>When I run this command:</p>
  
  <pre><code>java -jar schemaspy-6.0.0.jar -configFile schemaspy.properties
  </code></pre>
  
  <p>I'm sure that database is reacheable on lcoalhost:5431. However I receive:</p>
  
  <pre>
  user@hostname:~/path-to-app$ java -jar schemaspy-6.0.0.jar -configFile schemaspy.properties 
    ____       _                          ____
   / ___|  ___| |__   ___ _ __ ___   __ _/ ___| _ __  _   _
   \___ \ / __| '_ \ / _ \ '_ ` _ \ / _` \___ \| '_ \| | | |
    ___) | (__| | | |  __/ | | | | | (_| |___) | |_) | |_| |
   |____/ \___|_| |_|\___|_| |_| |_|\__,_|____/| .__/ \__, |
                                               |_|    |___/
  
                                                6.0.0
  
  SchemaSpy generates an HTML representation of a database schema's relationships.
  SchemaSpy comes with ABSOLUTELY NO WARRANTY.
  SchemaSpy is free software and can be redistributed under the conditions of LGPL version 3 or later.
  http://www.gnu.org/licenses/
  
  INFO  - Starting Main v6.0.0 on hostname with PID 18555 (/home/user/path-to-app/schemaspy-6.0.0.jar started by user in /home/user/path-to-app)
  INFO  - The following profiles are active: default
  INFO  - Found configuration file: schemaspy.properties
  INFO  - Started Main in 3.406 seconds (JVM running for 4.519)
  INFO  - Starting schema analysis
  WARN  - Connection Failure
  </pre>
  
  <p>Should I add a driver? I tried with <code>postgresql-42.2.4.jar</code>. I downloaded it from <a href="https://jdbc.postgresql.org/download.html" rel="noreferrer">jdbc.postgresql.org</a> site and added this line to config file.</p>
  
  <p><code>schemaspy.dp=postgresql-42.2.4.jar</code></p>
  
  <p>However it still shows the same error.</p>