How to Fix 'Client does not support authentication protocol requested by server' MySQL JDBC Error?

Error: MySQL Client Authentication Protocol Incompatibility

When connecting to a MySQL database using JDBC, you may encounter the error "Client does not support authentication protocol requested by server." This issue stems from the MySQL server using a newer authentication protocol than what is supported by your MySQL client, specifically MySQL Connector/J.

Solution

To resolve this issue, you must upgrade your MySQL Connector/J to a version that supports the new caching_sha2_password authentication mechanism introduced in MySQL 8. The latest version of the driver at the time of writing is 8.0.15, which includes support for this authentication method.

Updating MySQL Connector/J

• Using Maven:

  <dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
    <version>8.0.15</version>
  </dependency>

• Using Gradle:

  dependencies {
    compile group: 'mysql', name: 'mysql-connector-java', version: '8.0.15'
  }

• Direct download:
  Download the latest version of MySQL Connector/J from https://dev.mysql.com/downloads/connector/j/ and add it to your project's classpath.

Note: It is important to upgrade to a version of MySQL Connector/J that is compatible with your MySQL server version to avoid encountering authentication issues.

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