创建工程
rebar-creator create-app testCowboy
testCowboy_app.erl
-module(testCowboy_app). -behaviour(application). -export([start/2, stop/1]). -define(C_ACCEPTORS, 100). start(_StartType, _StartArgs) -> application:start(crypto), application:start(cowlib), application:start(ranch), application:start(cowboy), Routes = route_helper:get_routes(), Dispatch = cowboy_router:compile(Routes), Port = 8080, TransOpts = [{port, Port}], ProtoOpts = [ {env, [ {dispatch, Dispatch}]} ], cowboy:start_http(http, ?C_ACCEPTORS, TransOpts, ProtoOpts). stop(_State) -> ok.
route_helper.erl
-module(route_helper). -export([get_routes/0]). get_routes() -> [ {'_', [ {"/redirect", redirect_handler, []} ]} ].
redirect_handler.erl
-module(redirect_handler). -export([init/3]). -export([handle/2]). -export([terminate/3]). init(_Transport, Req, []) -> {ok, Req, undefined}. handle(Req, State) -> {ok, Reply} = cowboy_req:reply( 302, [{<<"Location">>, <<"http://www.baidu.com">>}], <<"Redirecting with Header!">>, Req ), {ok, Reply, State}. terminate(_Reason, _Req, _State) -> ok.