Data truncation: Data too long for column 'logo' at row 1

I am trying to insert a photo into a BLOB column of a MySQL table, and I get an exception:

Data too long for column 'logo' at row 1. 

Here is the JDBC:

    int idRestaurant = 42;
    String restoname=  "test";
    String restostatus=  "test";
    InputStream fileContent = getUploadedFile();
    int fileSize = getUploadedFileSize();

    Class.forName("com.mysql.jdbc.Driver");
    try (Connection conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/resto" , "root" , "" )) {
        PreparedStatement ps = conn.prepareStatement("insert into restaurants (idRestaurant, restaurantName, status, logo) values(?,?,?,?)");
        ps.setInt(1, idRestaurant);
        ps.setString(2, restoname);
        ps.setString(3, restostatus);
        ps.setBinaryStream(4, fileContent, fileSize);
        ps.executeUpdate();
        conn.commit();
    }

How do I solve this problem?

Solution 1:

You are trying to insert data that is larger than allowed for the column logo.

Use following data types as per your need

TINYBLOB   :     maximum length of 255 bytes  
BLOB       :     maximum length of 65,535 bytes  
MEDIUMBLOB :     maximum length of 16,777,215 bytes  
LONGBLOB   :     maximum length of 4,294,967,295 bytes  

Use LONGBLOB to avoid this exception.

Solution 2:

Use data type LONGBLOB instead of BLOB in your database table.

Solution 3:

Following solution worked for me. When connecting to the db, specify that data should be truncated if they are too long (jdbcCompliantTruncation). My link looks like this:

jdbc:mysql://SERVER:PORT_NO/SCHEMA?sessionVariables=sql_mode='NO_ENGINE_SUBSTITUTION'&jdbcCompliantTruncation=false

If you increase the size of the strings, you may face the same problem in future if the string you are attempting to store into the DB is longer than the new size.

EDIT: STRICT_TRANS_TABLES has to be removed from sql_mode as well.