openresty + lua 二、openresty 鏈接 redis，實現 crud

　　redis 的話，openresty 已經集成，ng 的話，本身引入便可。

　　github 地址:https://github.com/openresty/lua-resty-redis

　　github 裏提供有詳細的教程，按照教程來應該是不會有問題的。redis 我也簡單寫了一個工具類，具體貼上個人一系列代碼吧.大神勿噴.

　

　　工具類:(很基礎，重點是本身去寫，只是針對初學者，大神忽視便可)

local connectRedisUtil = {}

local redis = require "resty.redis"
-- or connect to a unix domain socket file listened
-- by a redis server:
--     local ok, err = red:connect("unix:/path/to/redis.sock")

function connectRedisUtil.connectRedis() 
    local red = redis:new()
    red:set_timeout(1000) -- 1 sec

    local ok, err = red:connect("127.0.0.1", 6379)
    if not ok then
        ngx.say("failed to connect: ", err)
        return false
    end
    
    return red
end

return connectRedisUtil

View Code

 

　　調用:

local connectRedisUtil = require("connectRedisUtil")
local red = connectRedisUtil.connectRedis()
if red == false then
    ngx.exit(ngx.HTTP_INTERNAL_SERVER_ERROR)
    return
end

--set
local ok, err = red:set("englishName", "Allen")
if not ok then
    ngx.say("set bad result:", err)
    return
end

--get
local res, err = red:get("englishName")
if not res then
    ngx.say("get englishName failed:", err)
    return
end
ngx.say("englishName is : ", res)

res, err = red:get("name")
if not res then
    ngx.say("get bad result:", err)
    return
else
    ngx.say("res is :", res)
end

View Code

 

　　openresty 配置:

server {
    listen 6688;
    server_name localhost;    
    default_type "text/html";

    lua_need_request_body on;

    location = /test_redis_exercise {
        content_by_lua_file /Users/zhuzi/zhuzi_relation/exercise/lua_pro/redis_exercise.lua;
    }
}

View Code

　　
　　OK,搞定。接下來打開瀏覽器驗證一下吧。

　　效果我就不貼了，確定是沒有問題的。今天的就到這裏了。