我想在mysql中保存一个阿拉伯语字符，在我的csv文件中我有阿拉伯语和英语字符。
当我显示控制台日志时，我可以看到带有阿拉伯字符的字符串，但在mysql中，我看到了“？？”字符
如果我的csv文件、数据库和表都是utf-8编码
我还在application.properties中添加了以下内容：

spring.datasource.url=jdbc:mysql://localhost:3306/contacts?useUnicode=true&characterEncoding=UTF-8
spring.datasource.username=root
spring.datasource.password=

我使用的是springbatchversion4，带有简单的csv到mysql
我必须补充什么？
附加代码：

@Bean
    public FlatFileItemReader<Csv> fileReader(@Value("${input}") Resource in) throws Exception {

        return new FlatFileItemReaderBuilder<Csv>()
                .name("file-reader")
                .resource(in)
                .targetType(Csv.class)
                .linesToSkip(1)
                .delimited().delimiter(";").names(new String[]{"Name","Email","UID","Username","Phone","Location","Birthday","Gender"})
                .build();
    }

    @Bean
    public JdbcBatchItemWriter<Contact> jdbcWriter(DataSource ds) {
            return new JdbcBatchItemWriterBuilder<Contact>()
                    .dataSource(ds)
                    .sql("INSERT INTO contact (UID, name, username, gender, phone, email, birthday, location, country_id, city_id, state_id) VALUES (:uid, :name, :username, :gender, :phone, :email, :birthday, :location, :countryId, :cityId, :stateId)")
                    .beanMapped()
                    .build();

    }