Hibernate/JPA import.sql utf8 characters corrupted

Question

I\'m using import.sql to write my development data to DB. I\'m using MySQL Server 5.5 and my persistence.xml is here:

Answer 1

Here's a reliable solution without setting any system property.

We assume that import files are encoded with UTF-8 but Java default charset is different, let's say latin1.

1) Define a custom class for import_files_sql_extractor hibernate.hbm2ddl.import_files_sql_extractor=com.pragmasphere.hibernate.CustomSqlExtractor

2) fix the invalid strings read by hibernate in the implementation.

package com.pragmasphere.hibernate;

import org.hibernate.tool.hbm2ddl.MultipleLinesSqlCommandExtractor;

import java.io.IOError;
import java.io.Reader;
import java.io.UnsupportedEncodingException;
import java.nio.charset.Charset;

public class CustomSqlExtractor extends MultipleLinesSqlCommandExtractor {

    private final String SOURCE_CHARSET = "UTF-8";

    @Override
    public String[] extractCommands(final Reader reader) {
        String[] lines = super.extractCommands(reader);

        Charset charset = Charset.defaultCharset();
        if (!charset.equals(Charset.forName(SOURCE_CHARSET))) {
            for (int i = 0; i < lines.length; i++) {
                try {
                    lines[i] = new String(lines[i].getBytes(), SOURCE_CHARSET);
                } catch (UnsupportedEncodingException e) {
                    throw new IOError(e);
                }
            }
        }

        return lines;
    }
}

You can change value of SOURCE_CHARSET with another encoding used by import files.