SELECT DISTINCT
RES.START_USER_ID_ AS startUserId
FROM
ACT_HI_PROCINST RES
LEFT OUTER JOIN ACT_RE_PROCDEF DEF ON RES.PROC_DEF_ID_ = DEF.ID_
WHERE
RES.PROC_INST_ID_ = #{
processInstanceId}
ORDER BY
RES.ID_ ASC
1.#{processInstanceId} 实例ID
2.启动流程时候设置发起人
Authentication.setAuthenticatedUserId(userNameId);