OpenResty入门

写一个小例子--输出随机字符串

编写nginx配置文件

        location /random {
            content_by_lua_file /usr/local/openresty/nginx/conf/lua/random.lua;
        }

编写random.lua文件

local args = ngx.req.get_uri_args()
local salt = args.salt
if not salt then
    ngx.exit(ngx.HTTP_BAD_REQUEST)
end

local string = ngx.md5(ngx.time() .. salt)
ngx.say(string)

检查语法

./nginx -t -c /usr/local/openresty/nginx/conf/nginx.conf

重启nginx

./nginx -s reload -c /usr/local/openresty/nginx/conf/nginx.conf

测试一下

curl 127.0.0.1/random?salt=123                              

成功输出了随机字符串

ea14f7a36e29925f3e9e318128f989f7

ngx lua API--post请求获取并输出userAgent

1. 编写userAgent.lua文件

local json = require "cjson"

ngx.req.read_body()
local args = ngx.req.get_post_args()

if not args or not args.info then
        ngx.exit(ngx_HTTP_BAD_REQUEST)
end

local client_ip = ngx.var.remote_addr
local user_agent = ngx.req.get_headers()['user-agent'] or ''
local info = ngx.decode_base64(args.info)

local response = {}
response.info = info
response.ip = client_ip
response.user_agent = user_agent

ngx.say(json.encode(response))

2. 修改nginx配置文件

location /agent {
    content_by_lua_file /usr/local/openresty/nginx/conf/lua/userAgent.lua;
}

3. 检查配置语法并重启nginx

[root@VM_0_10_centos sbin]# ./nginx -t -c /usr/local/openresty/nginx/conf/nginx.conf
nginx: the configuration file /usr/local/openresty/nginx/conf/nginx.conf syntax is ok
nginx: configuration file /usr/local/openresty/nginx/conf/nginx.conf test is successful
[root@VM_0_10_centos sbin]# ./nginx -s reload -c /usr/local/openresty/nginx/conf/nginx.conf

4. 使用curl进行测试

[root@VM_0_10_centos sbin]# curl -i --data 'info=addgfdgjkljdfgjkl65632dsgds' 127.0.0.1/agent
HTTP/1.1  OK
Server: openresty/1.13.6.1
Date: Sun,  Sep  :: GMT
Content-Type: application/octet-stream
Transfer-Encoding: chunked
Connection: keep-alive

{"info":"i#\b䗮zip":"127.0.0.1","user_agent":"curl\/7.61.0"}

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