java.sql.SQLException: Unknown initial character set index '255' received from server for connector 8.0.11

Question

While establishing the connection to a MySQL database, I\'m getting the following error

java.sql.SQLException: Unknown initial character set index \'255\' receiv         


        

Answer 1

Use Version 5.1.44 of mysql-connector-java.

<dependency>
   <groupId>mysql</groupId>
   <artifactId>mysql-connector-java</artifactId>
   <version>5.1.44</version>
</dependency>

Answer 2

it is because of mysql-connector version , i,e. My-sql install version and dependency version did not match.

use same version for myS

Answer 3

Using MySQLWorkbench interface:

First click in your connection ->

After click in Options File

And change character-set-server and collation-server values to the values below:

Make sure to restart mysql server by opening services and restarting mysql server.

Answer 4

The way I fixed it : Add characterEncoding=utf8 to the end of jdbc connection string

E.g. connection = DriverManager.getConnection("jdbc:mysql://localhost:3306/photo_app?" + "user=root&password=root&characterEncoding=utf8");

Answer 5

You can add ?characterEncoding=latin1" after your url String like this for e.g.:

"jdbc:mysql://localhost/yourDB?characterEncoding=latin1";

It might work.

Answer 6

Compatible version of mysql-connector-java should be required as per installed MySQL Server ---> For my installed MySQL Server 8.0 I download mysql-connector-java-8.0.20 in SoapUi/bin/ext folder or build path of project in eclipse. it works for me!!