How to encapsulate the data format of Android Bluetooth Communication equipment

android Bluetooth development needs to connect the target device, and the encapsulation data format provided by the demand side is hexadecimal. Here is an example to find the java encapsulation method!

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Jul.30,2021
MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1b3eec9-409dc.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b3eec9-409dc.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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