If a developer wishes to access two different database formats in the same program, they don't need to add any additional syntax to their code they simply call two different JDBC drivers. Rather than connecting to the database directly, the applications send requests to the JDBC API, which in turn communicates with the specified database through a driver that converts the API calls into the proper dialect for the database to understand. JDBC provides an abstraction layer between Java applications and database servers, so that an application's code does not need to be altered in order for it to communicate with multiple database formats. How Tomcat Connects to databasesīefore we start setting up the MySQL connection, let's take a quick look at the framework Tomcat uses to handle database connections, a technology called Java Database Connectivity, or JDBC. Using clusters? Use Tcat to manage their configurations as a group. Need to configure MySQL / JDBC on more than one Tomcat instance? Tcat allows you to save common configurations and apply them to any instance instantly. Along the way, we'll also cover setting up connection pooling, programmatic configuration, and global naming resources, to ensure that your configuration is the best for your needs. Stumped by Tomcat JDBC connections? Can't get your head around MySQL drivers, connection pools, and JNDI resources? This article will guide you step-by-step through connecting your MySQL database to Tomcat, in plain English.
Also you should always close the database connection once you complete interacting with database by calling close() method of the Connection object.Tomcat MySQL connection - Using JDBC to connect Tomcat to MySQL Therefore, when you create a Connection object, you should always put it inside a try catch block. in such cases, JDBC throws a SQLException. When connecting to MySQL, anything could happens e.g., database server is not available, wrong user name or password, etc. String url = "jdbc:mysql://localhost:3306/mysqljdbc" Ĭonn = DriverManager.getConnection(url, user, password) Connecting to MySQL databaseįirst, you need to import three classes: SQLException, DriverManager, and Connection from the java.sql.* package. Third, click on the Add JAR folder button, browse to the location where you installed MySQL Connector/J, and choose the JAR file as screenshot below after that click OK button. Second, on the left hand side of the project properties dialog, from the Categories section, choose Libraries item.
The project properties dialog will appear.
To load MySQL Connector/J into your program you follow three steps below:įirst, in NetBeans IDE, from project name, right mouse click and choose properties menu item. Loading MySQL Connector/J into your program Then you can use this Connection object to execute queries. Create a new Connection object from the DriverManager class.Load the MySQL Connector/J into your program.To connect to MySQL database from a Java program, you need to do the following steps:
INSTALL JDBC DRIVER FOR MYSQL HOW TO
In this tutorial, you will learn how to connect to MySQL database using JDBC Connection object.
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