How to compare utf8 text in mysql query using java
Use parameters. The driver should then encode them correctly according to the connection properties.
PreparedStatement statement = connection.prepareStatement( "select age from student where name = ?"); statement.setString(1, stringVariable);In addition, this also correctly escapes special SQL characters (like single quotes).
You shouldn't have to transform anything. The driver takes care of everything. Try using a prepared statement rather than string concatenation. This will have the additional advantage of avoiding SQL injection attacks, and make sure your statement works even if the string variable contains a quote.
I solved this problem it was not only related with the database query but I get the string from ajax request so I had to decode it from utf8 first and then get the parameter value using
URLDecoder.decode(request.getQueryString(), "UTF-8")and then pass it to the query and I used prepared statement which encodes it according to the connection properties as you mentioned
Thank you