找不到模块'resty.http‘：安装了resty

Question

在使用resty测试示例代码时，我面临一个问题。请查找相关命令的输出：

$ which resty
/usr/local/bin/resty
$ which openresty
/usr/local/bin/openresty
$ resty -e 'ngx.say("hello world")'               
hello world

文件: test.lua

local http = require "resty.http"
local httpc = http.new()
local res, err = httpc:request_uri("http://example.com/helloworld", {
  method = "POST",
  body = "a=1&b=2",
  headers = {
    ["Content-Type"] = "application/x-www-form-urlencoded",
  },
  keepalive_timeout = 60000,
  keepalive_pool = 10
})

if not res then
  ngx.say("failed to request: ", err)
  return
end

在使用resty运行这个test.lua文件时，我面临的是模块'resty.http‘没有找到：

$ resty test.lua                                    
ERROR: test.lua:1: module 'resty.http' not found:
        no field package.preload['resty.http']
        no file '/usr/local/Cellar/openresty/1.19.3.1_1/site/lualib/resty/http.ljbc'
        no file '/usr/local/Cellar/openresty/1.19.3.1_1/site/lualib/resty/http/init.ljbc'
        no file '/usr/local/Cellar/openresty/1.19.3.1_1/lualib/resty/http.ljbc'
        no file '/usr/local/Cellar/openresty/1.19.3.1_1/lualib/resty/http/init.ljbc'
        no file '/usr/local/Cellar/openresty/1.19.3.1_1/site/lualib/resty/http.lua'
        no file '/usr/local/Cellar/openresty/1.19.3.1_1/site/lualib/resty/http/init.lua'
        no file '/usr/local/Cellar/openresty/1.19.3.1_1/lualib/resty/http.lua'
        no file '/usr/local/Cellar/openresty/1.19.3.1_1/lualib/resty/http/init.lua'
        no file './resty/http.lua'
        no file '/usr/local/Cellar/openresty/1.19.3.1_1/luajit/share/luajit-2.1.0-beta3/resty/http.lua'
        no file '/usr/local/share/lua/5.1/resty/http.lua'
        no file '/usr/local/share/lua/5.1/resty/http/init.lua'
        no file '/usr/local/Cellar/openresty/1.19.3.1_1/luajit/share/lua/5.1/resty/http.lua'
        no file '/usr/local/Cellar/openresty/1.19.3.1_1/luajit/share/lua/5.1/resty/http/init.lua'
        no file '/usr/local/Cellar/openresty/1.19.3.1_1/site/lualib/resty/http.so'
        no file '/usr/local/Cellar/openresty/1.19.3.1_1/lualib/resty/http.so'
        no file './resty/http.so'
        no file '/usr/local/lib/lua/5.1/resty/http.so'
        no file '/usr/local/Cellar/openresty/1.19.3.1_1/luajit/lib/lua/5.1/resty/http.so'
        no file '/usr/local/lib/lua/5.1/loadall.so'
        no file '/usr/local/Cellar/openresty/1.19.3.1_1/site/lualib/resty.so'
        no file '/usr/local/Cellar/openresty/1.19.3.1_1/lualib/resty.so'
        no file './resty.so'
        no file '/usr/local/lib/lua/5.1/resty.so'
        no file '/usr/local/Cellar/openresty/1.19.3.1_1/luajit/lib/lua/5.1/resty.so'
        no file '/usr/local/lib/lua/5.1/loadall.so'
stack traceback:
        test.lua:1: in function 'file_gen'
        init_worker_by_lua:45: in function <init_worker_by_lua:43>
        [C]: in function 'xpcall'
        init_worker_by_lua:52: in function <init_worker_by_lua:50>

我也试过Install resty.http with already installed openresty。

Answer 1

我使用Install resty.http with already installed openresty中提到的相同的解决方案来解决这个问题。

第一次，这对我不起作用，因为我有一条神圣的道路。但是，当我检查错误日志时，我知道它正在/usr/local/Cellar/openresty/1.19.3.1_1/lualib/resty/http.lua寻找/usr/local/Cellar/openresty/1.19.3.1_1/lualib/resty/http.lua，所以复制https://github.com/ledgetech/lua-resty-http/blob/master/lib/resty/http.lua对我有用。

感谢Alexander Altshuler的original answer

Answer 2

那家图书馆默认带有空。不要复制文件，而是使用LUA_PATH环境变量调整Lua路径设置。这可以使用LuaRocks完成(默认情况下还包括空)

若要使用LuaRocks设置路径，请尝试：

eval `luarocks path`