安卓跳转公众号，提示"本次请求无效,请确认是否具有权限"，请问怎么得到权限？

调用代码：

val iWXAPI = WXAPIFactory.createWXAPI(ContextManager.applicationContext, PUBLICK_APP_ID, true)

iWXAPI.registerApp(PUBLICK_APP_ID)

val req = JumpToBizProfile.Req()

req.toUserName = publickId //公众号原始id

req.extMsg = extMsg

req.profileType = JumpToBizProfile.JUMP_TO_NORMAL_BIZ_PROFILE

val ret = iWXAPI.sendReq(req)