  The method of anomaly cancellation to derive Hawking radiation initiated by
Robinson and Wilczek is applied to 2+1 dimensional stationary black holes.
Using the dimensional reduction technique, we find that the near-horizon
physics for the fermionic field in the background of the general 2+1
dimensional stationary black hole can be approximated by an infinite collection
of two component fermionic fields in 1+1 dimensional spacetime background
coupled with dilaton field and U(1) gauge field. By restoring the gauge
invariance and the general coordinate covariance for the reduced two
dimensional theory, Hawking flux and temperature of black hole are obtained. We
apply this method to two types of black holes in three dimensional spacetime,
which are BTZ black hole in Einstein gravity and a rotating black hole in
Bergshoeff-Hohm-Townsend (BHT) massive gravity.
