因为1.22.6本来就没有这个方法:
"Bootstrap-Table-API方法列表" (https://link.segmentfault.com/?enc=WS8mFAap%2BRTTQKi4NVTZcA%3D%3D.QjXI4tgV98Ixa7gnoRpeP7VpkC88JeCL1BhvQxXkH3DhXr7YE6hhC7Oh%2BTHVTg%2Bq)
可以参照这篇博文进行列的动态添加:
"https://blog.51cto.com/357712148/2495267" (https://link.segmentfault.com/?enc=p19OHFHIakzauHsKeiF0Jg%3D%3D.fjLsvxW8KJX94DzyEivjzoqm%2BIcecRyIBIdld%2BUJeV2DIMcRhpf6iOeCSPsmbeF2)