Why Am I Getting a \"java.sql.SQLException: Access Denied\" Error When Connecting to MySQL?

Accessing MySQL with Insufficient User Permissions: Addressing "java.sql.SQLException: Access Denied"

Encountering the exception "java.sql.SQLException: Access denied" while connecting to a MySQL database through Java can be frustrating. This error typically indicates that the user attempting to connect lacks the appropriate permissions to access the database.

In your case, the exception arises from the following code snippet:

<code class="java">Connection m_connection = DriverManager.getConnection("jdbc:mysql://localhost", "root", "root");</code>

The code attempts to establish a connection to a MySQL database running on localhost using the "root" user with the "root" password. However, the error suggests that these credentials do not have the necessary privileges to access the database.

To resolve this issue, you must grant the user attempting to connect the appropriate permissions. In MySQL, this can be achieved by executing the following query:

<code class="sql">GRANT ALL PRIVILEGES ON *.* TO 'root'@'localhost' IDENTIFIED BY '%password%' WITH GRANT OPTION;</code>

Remember to replace "%password%" with your actual MySQL password.

Once you have executed this query, you should be able to connect to the MySQL database successfully using the "root" user and the specified password.

Alternatively, in your second code snippet:

<code class="java">Connection conn = (Connection) DriverManager.getConnection("jdbc:mysql://localhost/?user=root&password=rootpassword"); </code>

You are using a different approach to include the user and password within the connection URL itself. While this approach can be convenient, it is generally less secure as it exposes the password in plain text.

It is always recommended to use a configuration file or other secure mechanism to store database credentials instead of embedding them directly into your code or connection URL.

The above is the detailed content of Why Am I Getting a \"java.sql.SQLException: Access Denied\" Error When Connecting to MySQL?. For more information, please follow other related articles on the PHP Chinese website!