*&--- 获取用户名
CLEAR:E_FIRSTNAME,E_LASTNAME.
CALL FUNCTION 'FDM_CUST_USER_NAME_READ_SINGLE'
EXPORTING
I_USER_ID = GS_MSEG_MKPF-USNAM
IMPORTING
E_FIRSTNAME = E_FIRSTNAME
E_LASTNAME = E_LASTNAME.
GS_ALV-ZFNAME = E_LASTNAME && E_FIRSTNAME.
LASTNAME为姓
FIRSTNAME为名
标签：用户名,GS,FIRSTNAME,LASTNAME,ABAP,USER,描述 From： https://www.cnblogs.com/aqsyc/p/16658010.html