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With the two classes below, I've tried connect to a MySQL database. However, I always get this error:
Wed Dec 09 22:46:52 CET 2015 WARN: Establishing SSL connection without server's identity verification is not recommended. According to MySQL 5.5.45+, 5.6.26+ and 5.7.6+ requirements SSL connection must be established by default if explicit option isn't set. For compliance with existing applications not using SSL the verifyServerCertificate property is set to 'false'. You need either to explicitly disable SSL by setting useSSL=false, or set useSSL=true and provide truststore for server certificate verification.
This is the test class with the main method:
public class TestDatabase { public static void main(String[] args) { Database db = new Database(); try { db.connect(); } catch (Exception e) { e.printStackTrace(); } db.close(); } } This is the Database class:
import java.sql.Connection; import java.sql.DriverManager; import java.sql.SQLException; public class Database { private Connection con; public void connect() throws Exception{ if(con != null) return; try { Class.forName("com.mysql.jdbc.Driver"); } catch (ClassNotFoundException e) { throw new Exception("No database"); } String connectionURL = "jdbc:mysql://localhost:3306/Peoples"; con = DriverManager.getConnection(connectionURL, "root", "milos23"); } public void close(){ if(con != null){ try { con.close(); } catch (SQLException e) { e.printStackTrace(); } } } } 
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right-click on the particular MySQL instance and select "Edit Connection" Select the "SSL" tab under Connection Method. Select the drop-down for the "Use SSL" and choose "If Available" instead of "Required". Click the "Test Connection" button at the lower right connection to make sure you can now connect without errors ...
MySQL supports encrypted connections between clients and the server using the TLS (Transport Layer Security) protocol. TLS is sometimes referred to as SSL (Secure Sockets Layer) but MySQL does not actually use the SSL protocol for encrypted connections because its encryption is weak (see Section 6.3.
You need either to explicitly disable SSL by setting useSSL=false, or set useSSL=true and provide truststore for server certificate verification. If you want to avoid the above MySQL warning, use the syntax mention in the beginning.
Enable SSL Connections on MySQL Now, connect to the MySQL shell and check the status with the following command: mysql -u root -p --ssl-mode=required mysql> SHOW VARIABLES LIKE '%ssl%'; You should see that both have_openssl and have_ssl variables are now enabled.
Your connection URL should look like the below,
jdbc:mysql://localhost:3306/Peoples?autoReconnect=true&useSSL=false This will disable SSL and also suppress the SSL errors.
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How about using SSL but turning off server verification (such as when in development mode on your own computer):
jdbc:mysql://localhost:3306/Peoples?verifyServerCertificate=false&useSSL=true If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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