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Certainly,
Connecting to a PostgreSQL database in Google Cloud SQL involves a few steps. Let’s break it down:
Required JARs:
To connect to a PostgreSQL database, you’ll need the appropriate JDBC driver JAR for PostgreSQL. You can download it from the official PostgreSQL website or use Maven/Gradle to manage dependencies.
The most common JDBC driver for PostgreSQL is postgresql-<version>.jar.
JDBC Connection String:
The JDBC connection string for connecting to a PostgreSQL database in Google Cloud SQL depends on whether you want to use a public IP or a private IP.
Here are the formats for both scenarios:
Public IP:
jdbc:postgresql://<PUBLIC_IP>:<PORT>/<DATABASE_NAME>?user=<USERNAME>&password=<PASSWORD>&sslmode=require
Replace <PUBLIC_IP>, <PORT>, <DATABASE_NAME>, <USERNAME>, and <PASSWORD> with your actual values.
Private IP (using Cloud SQL Auth Proxy):
jdbc:postgresql:///<DATABASE_NAME>?host=/cloudsql/<PROJECT_ID>:<REGION>:<INSTANCE_ID>&user=<USERNAME>&password=<PASSWORD>&sslmode=require
Replace <DATABASE_NAME>, <PROJECT_ID>, <REGION>, <INSTANCE_ID>, <USERNAME>, and <PASSWORD>.
Example:
If you’re using a public IP, your connection string might look like:
jdbc:postgresql://35.123.45.67:5432/mydb?user=myuser&password=mypassword&sslmode=require
For a private IP with Cloud SQL Auth Proxy:
jdbc:postgresql:///mydb?host=/cloudsql/my-project:us-central1:my-instance&user=myuser&password=mypassword&sslmode=require
Remember to replace placeholders with your actual values. Good luck with your PostgreSQL connection in Google Cloud SQL!
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