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nginx lua调用redis和mongo
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參考
http://blog.csdn.net/vboy1010/article/details/7892120
http://www.zhangjixuem.com.cn/2014/4/1/01037.html
https://github.com/bigplum/lua-resty-mongol
安裝：
下載ngx_openresty-1.7.2.1.tar.gz
./configure --prefix=/data/nginx/openresty/resty --with-luajit
make
make install
修改nginx.conf
注意default_type text/plain;
否則瀏覽器觸發是下載
charset utf-8,gbk;
否則可能會亂碼
Java代碼 ?
worker_processes??1;??events?{??????worker_connections??1024;??}??http?{??????include???????mime.types;??????charset?utf-8,gbk;???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????#?default_type??application/octet-stream;???????default_type?text/plain;????????lua_package_path?"/data/www/lua/?.lua;;";????????sendfile????????on;??????keepalive_timeout??65;??????????server?{??????????listen???????80;??????????server_name??localhost;????????????lua_code_cache?off;??????????????location?/lua?{??????????????content_by_lua_file?/data/www/lua/test.lua;????????????}????????????location?/lua_mongo?{??????????????content_by_lua_file?/data/www/lua/test_mongo.lua;????????????}????????????location?/lua_get?{???????????????content_by_lua_file?/data/www/lua/test_get.lua;????????????}?????????????location?/?{??????????????root???html;??????????????index??index.html?index.htm;??????????}??????????????#??????????error_page???500?502?503?504??/50x.html;??????????location?=?/50x.html?{??????????????root???html;??????????}????????}????}??
Java代碼 ?
local?redis?=?require?"resty.redis"????????local?cache?=?redis.new()????????local?ok,?err?=?cache.connect(cache,?'127.0.0.1',?'6379')????????cache:set_timeout(60000)????????if?not?ok?then????????????ngx.say("failed?to?connect:",?err)????????????return????end????????res,?err?=?cache:set("dog",?"an?aniaml")????if?not?ok?then????????????ngx.say("failed?to?set?dog:?",?err)????????????return????end????????ngx.say("set?result:?",?res)????????local?res,?err?=?cache:get("dog")????if?not?res?then????????????ngx.say("failed?to?get?dog:?",?err)????????????return????end????????if?res?==?ngx.null?then????????????ngx.say("dog?not?found.")????????????return????end????????ngx.say("dog:?",?res)????????????local?ok,?err?=?cache:close()????????if?not?ok?then????????????ngx.say("failed?to?close:",?err)????????????return????end???
結果
Java代碼 ?
[root@VM_192_107_centos?lua]#?!curl??curl?http:??set?result:?OK??dog:?an?aniaml??[root@VM_192_107_centos?lua]#??
#---------------mongo的基本操作--------------
http://wenku.baidu.com/link?url=K2rmB_5ypVHErZPvi1UucFXfnfEXk4IrvgSQzeSabKJx50W_gpD2cFvCEPQZm0sZgMvHGJTmZahK96Ee3n7OgZTb4gHgybQdZsQ2xGV4nZm
啟動mongo
./mongod --dbpath=../data/db --logpath=../log/mongodb.log
Java代碼 ?
show?dbs????use?admin????show?collections????db.startup_log.count()??db.startup_log.find()??db.startup_log.find().forEach(function(doc){print(tojson(doc));});????u={name:"haoning",age:21}??db.haoning.insert(u)??db.haoning.insert({name:"ningning",age:10})??????db.haoning.find({name:"haoning"});??db.haoning.find({age:18,name:"ning"});????db.haoning.find().sort({age:1});??db.haoning.find().sort({age:-1});????db.haoning.find().limit(2);????db.haoning.find().skip(2).limit(2);????db.haoning.find({age:{$gt:9,$lt:20},name:"ning"});??db.haoning.find({age:{$gt:9,$lt:20}});??$gte?$lte?$ne??db.haoning.find({age:{$in:[10,18]}});??db.haoning.find({$or:[{age:10},{age:21}]});????db.haoning.update({name:'ning'},{$set:{age:100,sex:0}});??????db.haoning.update({name:'haohao'},{$inc:{age:10}},false,true);??db.haoning.findOne({name:"ningning"});??id=db.haoning.findOne({name:"ningning"})._id??db.haoning.remove(id);??????db.haoning.ensureIndex({name:1})??db.haoning.ensureIndex({name:1},{backgrand:true})??db.haoning.ensureIndex({name:1},{unique:true})??db.haoning.ensureIndex({created_at:-1})??db.haoning.ensureIndex({name:1,created_at:-1})????db.haoning.distinct("name");??
mongo的安裝
git clone https://github.com/bigplum/lua-resty-mongol.git
make PREFIX=/data/nginx/openresty/resty install
/data/nginx/openresty/resty 為已經安裝的resty的安裝路徑
會在/data/nginx/openresty/resty/lualib/resty
下面添加mongol的一些lua腳本
mongo的test的lua腳本：
參考
http://www.zhangjixuem.com.cn/2014/4/1/01037.html
Java代碼 ?
local?mongo?=?require?"resty.mongol"??local?conn?=?mongo:new()??conn:set_timeout(1000)??local?ok,?err?=?conn:connect("127.0.0.1",27017)??if?not?ok?then??????ngx.say("connect?failed:?"..err)??end??local?db=conn:new_db_handle("test")??local?col?=?db:get_col("test")??local?r?=?col:find_one({name="dog"},{_id=0})??for?k,v?in?pairs(r)?do?????ngx.say(k..":?"..v)??end??
mongo的測試
Java代碼 ?
[root@VM_192_107_centos?lua]#?mongo???MongoDB?shell?version:?2.6.6??connecting?to:?test??>?use?test??switched?to?db?test??>?db.test.insert({name:"dog"})??WriteResult({?"nInserted"?:?1?})??>?^C??bye??[root@VM_192_107_centos?lua]#?^C??[root@VM_192_107_centos?lua]#?!curl??curl?http:??set?result:?OK??dog:?an?aniaml??[root@VM_192_107_centos?lua]#?curl?http:??name:?dog??[root@VM_192_107_centos?lua]#???
另外，nginx向lua傳值
Java代碼 ?
local?request_method?=?ngx.var.request_method??local?args?=?nil??local?param?=?nil??local?param2?=?nil??if?"GET"?==?request_method?then??????args?=?ngx.req.get_uri_args()??elseif?"POST"?==?request_method?then??????ngx.req.read_body()??????args?=?ngx.req.get_post_args()??end??param?=?args["p"]??ngx.say("request:?",?param)??
配置文件：
Java代碼 ?
location?/lua_get?{???????????????content_by_lua_file?/data/www/lua/test_get.lua;????????????}????
測試
Java代碼 ?
[root@VM_192_107_centos?lua]#?!curl??curl?http:??name:?dog??[root@VM_192_107_centos?lua]#??
[root@VM_192_107_centos sbin]# curl -d "p='bbb'" http://127.0.0.1/lua_get???
post
request: 'bbb'
[root@VM_192_107_centos sbin]#
參考http://www.server110.com/nginx/201310/2800.html
#-----------------使用request的 data_body,及json的參數--------
[root@VM_192_107_centos lualib]# ls
cjson.so? rds? redis? resty
[root@VM_192_107_centos lualib]# pwd
/data/nginx/openresty/resty/lualib
看下面有個cjson.so
就是可以require cjson了哈
Java代碼 ?
local?json?=?require("cjson")??local?request_method?=?ngx.var.request_method??local?args?=?nil??local?param?=?nil??local?param2?=?nil??--獲取參數的值??if?"GET"?==?request_method?then??????args?=?ngx.req.get_uri_args()??elseif?"POST"?==?request_method?then??????ngx.req.read_body()??????args?=?ngx.req.get_post_args()??end??param?=?args["param"]??param2?=?args["param2"]??--升級版(能處理content-type=multipart/form-data的表單)：??local?function?explode?(?_str,seperator?)??????????local?pos,?arr?=?0,?{}??????????????????for?st,?sp?in?function()?return?string.find(?_str,?seperator,?pos,?true?)?end?do??????????????????????????table.insert(?arr,?string.sub(?_str,?pos,?st-1?)?)??????????????????????????pos?=?sp?+?1??????????????????end??????????table.insert(?arr,?string.sub(?_str,?pos?)?)??????????return?arr??end??local?args?=?{}??local?file_args?=?{}??local?is_have_file_param?=?false??local?function?init_form_args()??????????local?receive_headers?=?ngx.req.get_headers()??????????local?request_method?=?ngx.var.request_method??????????if?"GET"?==?request_method?then??????????????????args?=?ngx.req.get_uri_args()??????????????????ngx.say("request?get:?",?args)??????????elseif?"POST"?==?request_method?then??????????????????ngx.say("request:?post?")??????????????????ngx.req.read_body()??????????????????ngx.say(string.sub(receive_headers["content-type"],1,33))??????????????????--if?string.sub(receive_headers["content-type"],1,20)?==?"multipart/form-data;"?then--判斷是否是multipart/form-data類型的表單??????????????????if?string.sub(receive_headers["content-type"],1,33)?==?"application/x-www-form-urlencoded"?then--判斷是否是multipart/form-data類型的表單??????????????????????????ngx.say("request:?post?1")??????????????????????????is_have_file_param?=?true??????????????????????????content_type?=?receive_headers["content-type"]??????????????????????????body_data?=?ngx.req.get_body_data()--body_data可是符合http協議的請求體，不是普通的字符串??????????????????????????ngx.say("body_data:",body_data)??????????????????????????value?=?json.encode(body_data)??????????????????????????ngx.say(value)??????????????????????????a?=?json.decode(value)??????????????????????????ngx.say(a['aa'])??????????????????????????--請求體的size大于nginx配置里的client_body_buffer_size，則會導致請求體被緩沖到磁盤臨時文件里，client_body_buffer_size默認是8k或者16k??????????????????????????if?not?body_data?then??????????????????????????????????local?datafile?=?ngx.req.get_body_file()??????????????????????????????????if?not?datafile?then??????????????????????????????????????????error_code?=?1??????????????????????????????????????????error_msg?=?"no?request?body?found"??????????????????????????????????else??????????????????????????????????????????local?fh,?err?=?io.open(datafile,?"r")??????????????????????????????????????????if?not?fh?then??????????????????????????????????????????????????error_code?=?2??????????????????????????????????????????????????error_msg?=?"failed?to?open?"?..?tostring(datafile)?..?"for?reading:?"?..?tostring(err)??????????????????????????????????????????else??????????????????????????????????????????????????fh:seek("set")??????????????????????????????????????????????????body_data?=?fh:read("*a")??????????????????????????????????????????????????fh:close()??????????????????????????????????????????????????if?body_data?==?""?then??????????????????????????????????????????????????????????error_code?=?3??????????????????????????????????????????????????????????error_msg?=?"request?body?is?empty"??????????????????????????????????????????????????end??????????????????????????????????????????end??????????????????????????????????end??????????????????????????end??????????????????????????local?new_body_data?=?{}??????????????????????????--確保取到請求體的數據??????????????????????????if?not?error_code?then??????????????????????????????????local?boundary?=?"--"?..?string.sub(receive_headers["content-type"],31)??????????????????????????????????local?body_data_table?=?explode(tostring(body_data),boundary)??????????????????????????????????local?first_string?=?table.remove(body_data_table,1)??????????????????????????????????local?last_string?=?table.remove(body_data_table)??????????????????????????????????for?i,v?in?ipairs(body_data_table)?do??????????????????????????????????????????local?start_pos,end_pos,capture,capture2?=?string.find(v,'Content%-Disposition:?form%-data;?name="(.+)";?filename="(.*)"')??????????????????????????????????????????if?not?start_pos?then--普通參數??????????????????????????????????????????????????local?t?=?explode(v,"\r\n\r\n")??????????????????????????????????????????????????local?temp_param_name?=?string.sub(t[1],41,-2)??????????????????????????????????????????????????local?temp_param_value?=?string.sub(t[2],1,-3)??????????????????????????????????????????????????args[temp_param_name]?=?temp_param_value??????????????????????????????????????????else--文件類型的參數，capture是參數名稱，capture2是文件名??????????????????????????????????????????????????file_args[capture]?=?capture2??????????????????????????????????????????????????table.insert(new_body_data,v)??????????????????????????????????????????end??????????????????????????????????end??????????????????????????????????table.insert(new_body_data,1,first_string)??????????????????????????????????table.insert(new_body_data,last_string)??????????????????????????????????--去掉app_key,app_secret等幾個參數，把業務級別的參數傳給內部的API??????????????????????????????????body_data?=?table.concat(new_body_data,boundary)--body_data可是符合http協議的請求體，不是普通的字符串??????????????????????????end??????????????????else??????????????????????????ngx.say("request:?post?else")??????????????????????????args?=?ngx.req.get_post_args()??????????????????????????ngx.say("request:?args?",args['p'])??????????????????end??????????end??end??init_form_args()??
結果
Java代碼 ?
[root@VM_192_107_centos?lualib]#?!curl??curl?-d?"{aa:'cc'}"?http:??request:?post???application/x-www-form-urlencoded??request:?post?1??body_data:{aa:'cc'}??"{aa:'cc'}"??nil??[root@VM_192_107_centos?lualib]#??
結合mongo加cjson的例子
Java代碼 ?
[root@VM_192_107_centos?lua]#?cat?getChannels.lua???local?mongo?=?require?"resty.mongol"??local?json?=?require("cjson")???local?conn?=?mongo:new()??conn:set_timeout(1000)??local?ok,?err?=?conn:connect("127.0.0.1",27017)??if?not?ok?then??????ngx.say("connect?failed:?"..err)??end??local?db=conn:new_db_handle("meedo-service")??local?col?=?db:get_col("channels")??local?r?=?col:find_one({_id=1})??value?=?json.encode(r)??ngx.say(value)?
來源:http://haoningabc.iteye.com/blog/2165119
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