- 使用rebar3创建erlang项目
- rebar3 new app test_cowboy
- 修改rebar.config
- {plugins, [ {rebar3_run, {git, "git://github.com/tsloughter/rebar3_run.git", {branch, "master"}}} ]}. {erl_opts, [debug_info]}. {deps, [ {cowboy, {git, "git://github.com/extend/cowboy.git",{tag, "1.0.0"}}} ]}. {relx, [{release, {test_cowboy, "1.0.0"}, [test_cowboy]}, {dev_mode, false}, {include_erts, true}, {system_libs, true}, {include_src, false}, {sys_config, "conf/sys.config"}, {vm_args, "conf/vm.args"}, {extended_start_script, true} ]}.
- 创建conf文件夹
- mkdir conf && cd conf
- 在conf下创建vm.args和sys.config文件
- vm.args
- ## Name of the node -name test_cowboy ## Cookie for distributed erlang -setcookie shadowolf
- sys.config
- [].
- vm.args
- 修改src/test_cowboy.app.src
- {application, test_cowboy, [{description, "Hello Erlang"}, {vsn, "0.1.0"}, {registered, []}, {mod, { test_cowboy_app, []}}, {applications, [ kernel, stdlib, cowboy ]}, {env,[]}, {modules, []} ]}.
- 修改src/test_cowboy_sup.erl
- -module(test_cowboy_sup). -behaviour(supervisor). -export([start_link/0]). -export([init/1]). -define(CHILD(I, Type), {I, {I, start_link, []}, permanent, 5000, Type, [I]}). -define(SERVER, ?MODULE). start_link() -> supervisor:start_link({local, ?SERVER}, ?MODULE, []). init([]) -> {ok, { {one_for_all, 0, 1}, [?CHILD(test_cowboy_web_svr, worker)]} }.
- 新建src/test_cowboy_web_svr.erl文件
- -module(test_cowboy_web_svr). -author("zhangpeng"). -behaviour(gen_server). -export([start_link/0]). -export([init/1, handle_call/3, handle_cast/2, handle_info/2, terminate/2, code_change/3]). -define(SERVER, ?MODULE). -record(state, {}). start_link() -> gen_server:start_link({local, ?SERVER}, ?MODULE, [], []). init([]) -> Dispatch = cowboy_router:compile( [ {'_', [ {"/test_cowboy_1", test_cowboy_1, []} ] } ] ), NbAcceptorts = 100, MaxConn = 1024 , Port = 8003, {ok, _} = cowboy:start_http(test_cowboy_http, NbAcceptorts, [{port, Port}, {max_connections, MaxConn}], [{env, [{dispatch, Dispatch}]}]), {ok, #state{}}. handle_call(_Request, _From, State) -> {reply, ok, State}. handle_cast(_Request, State) -> {noreply, State}. handle_info(_Info, State) -> {noreply, State}. terminate(_Reason, _State) -> ok. code_change(_OldVsn, State, _Extra) -> {ok, State}.
- 新建src/test_cowboy_1.erl
- -module(test_cowboy_1). -author("zhangpeng"). -behaviour(cowboy_http_handler). -export([init/3]). -export([handle/2]). -export([terminate/3]). init(_, Req, _Opts) -> {ok, Req, undefined}. handle(Req, State) -> {Param1,Req1} = cowboy_req:qs_val(<<"param1">>,Req), {Param2,Req2} = cowboy_req:qs_val(<<"param2">>,Req1), {ok, ReqReturn} = cowboy_req:reply(200, [{<<"content-type">>, <<"text/plain">>}], <<"Hello Erlang!">>, Req2), {ok, ReqReturn, State}. terminate(_Reason, _Req, _State) -> ok.