spring-boot-examples/src/main/java/com/larksuite/oapi/example/CardController.java
@Override
            public Object handle(Context context, com.larksuite.oapi.core.card.mode.Card card) throws Exception {
                // Print message card
                log.info("card:{}", card);
                log.info("card.getAction:{}", card.getAction());
                return "{\"config\":{\"wide_screen_mode\":true},\"i18n_elements\":{\"zh_cn\":[{\"tag\":\"div\",\"text\":{\"tag\":\"lark_md\",\"content\":\"[飞书](https://www.feishu.cn)整合即时沟通、日历、音视频会议、云文档、云盘、工作台等功能于一体，成就组织和个人，更高效、更愉悦。\"}}]}}";
            }
// Return value: can be null or JSON string of new message card
Return value: can be null or JSON string of new message card
Return value : can be null or JSON string of new message card
@Override
            public Object handle(Context context, com.larksuite.oapi.core.card.mode.Card card) throws Exception {
                log.info("card:{}", card);
                log.info("card.getAction:{}", card.getAction());
                return "{\"config\":{\"wide_screen_mode\":true},\"i18n_elements\":{\"zh_cn\":[{\"tag\":\"div\",\"text\":{\"tag\":\"lark_md\",\"content\":\"[飞书](https://www.feishu.cn)整合即时沟通、日历、音视频会议、云文档、云盘、工作台等功能于一体，成就组织和个人，更高效、更愉悦。\"}}]}}";
            }
@ Override public Object handle ( Context context , com . larksuite . oapi . core . card . mode . Card card ) throws Exception { log . info ( "card:{}" , card ) ; log . info ( "card.getAction:{}" , card . getAction ( ) ) ; return "{\"config\":{\"wide_screen_mode\":true},\"i18n_elements\":{\"zh_cn\":[{\"tag\":\"div\",\"text\":{\"tag\":\"lark_md\",\"content\":\"[飞书](https://www.feishu.cn)整合即时沟通、日历、音视频会议、云文档、云盘、工作台等功能于一体，成就组织和个人，更高效、更愉悦。\"}}]}}"; }
Return value: can be null or JSON string of new message card
Return value : can be null or JSON string of new message card
// Print message card