SpringBoot、mybatis、Druid结合使用存储emoji图标

ALTER TABLE tbl_name CHANGE c_name c_name CHARACTER SET character_name [COLLATE ...];
如：ALTER TABLE logtest CHANGE title title VARCHAR(100) CHARACTER SET utf8 COLLATE utf8_general_ci;

    public DataSource dataSource() throws Exception {
        DataSourceProperties properties = loanDataSourceProperties();
        Map map = Maps.newHashMap();
        map.put("url", properties.getUrl());
        map.put("driverClassName", properties.getDriverClassName());
        map.put("username", properties.getUsername());
        map.put("password", properties.getPassword());
        map.put("initialSize", "1");
        map.put("maxActive", "20");
        map.put("maxWait", "60000");
        map.put("timeBetweenEvictionRunsMillis", "60000");
        map.put("validationQuery", "SELECT 'x'");
        map.put("testWhileIdle", "true");
        map.put("testOnBorrow", "false");
        map.put("testOnReturn", "false");
        map.put("poolPreparedStatements", "false");
        map.put("initConnectionSqls","SET NAMES utf8mb4 COLLATE utf8mb4_unicode_ci;");
        DataSource dataSource = DruidDataSourceFactory.createDataSource(map);
        return dataSource;
    }