openresty动态转发

        location /lua {
            resolver 114.114.114.114;
            content_by_lua_block {
                local args,error = ngx.req.get_uri_args()
                local adcode = args['adcode']
                local version = args['version']
                ngx.say('adcode--->',adcode)
                ngx.say('version--->',version)
                local http = require("resty.http")
                local httpc = http.new()
                local url = nil
                if version and adcode then
                    url = "http://127.0.0.1/?adcode="..adcode.."&".."version="..version
                    ngx.say(url)
                    return
                end
                local response, error = httpc:request_uri(url, {
                    method = "GET",
                    path = "/",
                    headers = {
                        ["User-Agent"] = "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/40.0.2214.111 Safari/537.36"
                    }
                })
                if not response then
                    ngx.say(11111111111 .. error)
                    return
                end
                ngx.status = response.status
                for k, v in pairs(response.headers) do
                    if k ~= "Transfer-Encoding" and k ~= "Connection" then
                        ngx.header[k] = v
                    end
                end
                ngx.say(response.body)
                httpc:close()
            }
        }

 

第二种方法

location /lua {
            resolver 114.114.114.114;
            set $target "https://www.taobao.com";
            access_by_lua_block {
                local args,error = ngx.req.get_uri_args()
                local adcode = args['adcode']
                local version = args['version']
                if version and adcode then
                    ngx.var.target = "https://www.baidu.com/"
                end
            }
            echo "$target";
            proxy_pass $target;
        }

 根据post请求参数进行拦截

  location / {
    try_files $uri $uri/ /index.php?$query_string;
    access_by_lua_block {
        if ngx.var.request_method == "POST" then
          ngx.req.read_body()
          local p_args = ngx.req.get_post_args()
          for k,v in pairs(p_args) do
            if string.match(k, "1111") then
              ngx.say("2222")
            end
            if string.match(k, "2222") then
              ngx.say("2222")
            end
          end
        end
    }
  }

测试命令

[root@VM-0-15-centos conf.d]# curl -XPOST -d '{"name":"2222","age":"12"}' http://127.0.0.1:8888
2222
[root@VM-0-15-centos conf.d]# curl -XPOST -d '{"name":"1111","age":"12"}' http://127.0.0.1:8888
1111