Cowboy搭建

Z时代
2024-01-10
分类：综合

3、添加依赖,看下例子怎么添加

https://github.com/erlang/rebar3/blob/master/rebar.config.sample

在rebar.config

a) 修改 deps

{deps, [
  {cowboy, {git, "https://github.com/ninenines/cowboy.git", {tag, "2.6.1"}}}
]}.

b) 修改relx

{relx,[{release,{hope,"0.1.0"},
[cowlib,ranch,cowboy,
          hope,
          sasl]},
{sys_config,"./config/sys.config"},
{vm_args,"./config/vm.args"},
{dev_mode,true},
{include_erts,false},
{extended_start_script,true}]
}.

4、修改hope_app.erl 文件

把start函数改为

start(_StartType, _StartArgs)->
{ok, Sup}= hope_sup:start_link(),
    Dispatch = cowboy_router:compile([
{"_",[
{"/", hope_main,[]}
]}
]),
{ok, _}= cowboy:start_clear(http,[{port,8080}], #{
env=> #{dispatch=> Dispatch}
}),
{ok, Sup}.

5、添加hope_main.erl (相当于java的 RestController)

-module(hope_main).
-export([init/2]).
init(Req0,Opts)->
Req= cowboy_req:reply(200,#{
<<"content-type">>=><<"text/plain; charset=utf-8">>
},<<"cowboy server">>,Req0),
{ok,Req,Opts}.