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注：最新版本在以下博客首发：
http://blog.csdn.net/ngwsx/
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ngx_lua_module是一个nginx http模块，它把lua解析器内嵌到nginx，用来解析并执行lua语言编写的网页后台脚本。
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更新说明：
*) 更改LUA表的名称，具体如下：
??? nginx.dbd变成nginx.database；
??? nginx.log变成nginx.logger；
??? nginx.req变成nginx.request；
??? nginx.resp变成nginx.response；
??? nginx.var变成nginx.variable。
*) 重新实现nginx.database表，原有函数全部去掉，新增execute函数，
??? 简化了LUA代码中的数据库操作。具体请查看下面示例代码的用法。
*)? ngx_lua_module模块核心代码的优化。
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特性：
*) HTML网页中内嵌LUA脚本代码，类似于PHP。
*) 支持非阻塞的数据库操作，目前只支持MYSQL。
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API说明：
*) nginx 表
*) nginx.database 表
??? 提供数据库操作的接口，这些接口的内部实现是基于非阻塞模式的，
??? 因此不会阻塞Nginx的事件处理，可以支持比较高的并发。
??? 具体用法请查看下面的示例代码。
*) nginx.logger 表
??? Nginx日志接口的封装，允许在LUA代码写日志信息到Nginx的日志文件中。
??? 具体用法请查看下面的示例代码。
*) nginx.request 表
??? 提供与HTTP请求有关的接口，可以获取请求参数、请求头和Cookie值。
??? 具体用法请查看下面的示例代码。
*) nginx.response 表
??? 提供与HTTP响应有关的接口。
??? 具体用法请查看下面的示例代码。
*) ngnx.variable 表
??? 提供接口给LUA代码以获取Nginx的HTTP变量。
??? 具体用法请查看下面的示例代码。
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TODO：
*) API说明文档。
*) 更多实用功能的LUA表和接口实现，
??? 例如多台机器之间会话(Session)共享的透明处理。
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最新版本：
windows：https://github.com/downloads/hehaiqiang/ngwsx/ngx_lua_module-windows-1.0.5.1.rar
linux：https://github.com/downloads/hehaiqiang/ngwsx/ngx_lua_module-linux-1.0.5.1.tar.gz
历史版本：
https://github.com/hehaiqiang/ngwsx/downloads
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示例代码：
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index.lsp
<% local req = nginx.request --local name = req["name"] --local name = req.name if req.method == req.GET then name = req.get["name"] name = req.get.name else name = req.post["name"] name = req.post.name end name = name or "world" %> <html> <head><title>hello, <%=name%>!</title></head> <body> hello, <%=name%>! <hr> <form action="index.lsp" method="post"> <input type="text" name="name"/> <input type="submit" value="submit"/> </form> </body> </html>
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test_database.lsp
<%
local print = print
local nginx = nginx
local req = nginx.request
local db = nginx.database
local res = db.execute({
driver = "libdrizzle",
host = "127.0.0.1",
port = 3306,
user = "root",
password = "123456",
database = "mysql",
sql = "show databases"
})
%>
<html>
<head>
</head>
<body>
err: <%=res.err%>
<br/>
errstr: <%=res.errstr%>
<br/>
col_count: <%=res.col_count or ""%>
<br/>
row_count: <%=res.row_count or ""%>
<br/>
affected_rows: <%=res.affected_rows or ""%>
<br/>
insert_id: <%=res.insert_id or ""%>
<br/>
<% if res.err ~= 0 then print("error") return end %>
<hr>
<table border="1">
<tr>
<% for i=1,#res.columns do %>
<td><b><%=res.columns[i]%></b></td>
<% end %>
</tr>
<% for r=1,#res.rows do %>
<tr>
<% for i=1,#res.rows[r] do %>
<td><%=res.rows[r][i]%></td>
<% end %>
</tr>
<% end %>
</table>
<hr>
request_time: <%=req.request_time%>ms
</body>
</html>
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test_logger.lsp
<% local print = print local nginx = nginx local log = nginx.logger %> <html> <head> </head> <body> <% -- writing some messages into the log file of the nginx log.error(log.ALERT, "test alert" .. 1 .. 10) log.debug(log.DEBUG_HTTP, "test debug http") log.error(log.ERR, "test error") log.error(log.EMERG, 1000) %> please opening the log file of the nginx to view messages. </body> </html>
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test_request.lsp
<% local print = print local nginx = nginx local req = nginx.request local get_req_members = function() return { uri = req.uri, args = req.args, host = req.host, exten = req.exten, method = req.method, referer = req.referer, user_agent = req.user_agent, method_name = req.method_name, request_time = req.request_time .. "ms", request_line = req.request_line, unparsed_uri = req.unparsed_uri, http_protocol = req.http_protocol } end function get_headers_members() local headers = req.headers return { host = headers.host, user_agent = headers.user_agent } end %> <html> <head> </head> <body> <table border="1"> <% for k,v in pairs(get_req_members()) do %> <tr><td><%=k%></td><td><%=v%></td></tr> <% end %> </table> <hr> <table border="1"> <% for k,v in pairs(get_headers_members()) do %> <tr><td><%=k%></td><td><%=v%></td></tr> <% end %> </table> <% -- TODO: test the table "req.cookies" %> <hr> <% local one = req["one"] or 1 local two = req.two or 2 local three = req.get["three"] or 3 local four = req.get.four or 4 %> hello, <%=one%><%=two%><%=three%><%=four%>! </body> </html>
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test_response.lsp
<% local print = print local nginx = nginx local req = nginx.request local resp = nginx.response resp.content_type = "text/html" %> <html> <head><title></title></head> <body> <% local one = req["one"] or 1 local two = req.two or 2 local three = req.post["three"] or 3 local four = req.post.four or 4 %> hello, <%=one%><%=two%><%=three%><%=four%>! <hr> <form action="test_response.lsp" method="post"> <input type="text" name="one"/> <input type="text" name="two"/> <input type="text" name="three"/> <input type="text" name="four"/> <input type="submit" value="submit"/> </form> <hr> </body> </html>
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test_variable.lsp
<%
local print = print
local nginx = nginx
local var = nginx.variable
local array = {
--var.arg_PARAMETER or "",
args = var.args or "",
binary_remote_addr = var.binary_remote_addr or "",
body_bytes_sent = var.body_bytes_sent or "",
content_length = var.content_length or "",
content_type = var.content_type or "",
--var.cookie_COOKIE or "",
document_root = var.document_root or "",
document_uri = var.document_uri or "",
host = var.host or "",
hostname = var.hostname or "",
--var.http_HEADER or "",
user_agent = var.http_user_agent or "",
is_args = var.is_args or "",
limit_rate = var.limit_rate or "",
nginx_version = var.nginx_version or "",
query_string = var.query_string or "",
remote_addr = var.remote_addr or "",
remote_port = var.remote_port or "",
remote_user = var.remote_user or "",
request_filename = var.request_filename or "",
request_body = var.request_body or "",
request_body_file = var.request_body_file or "",
request_completion = var.request_completion or "",
request_method = var.request_method or "",
request_uri = var.request_uri or "",
scheme = var.scheme or "",
server_addr = var.server_addr or "",
server_name = var.server_name or "",
server_port = var.server_port or "",
server_protocol = var.server_protocol or "",
uri = var.uri or ""
}
%>
<html>
<head>
</head>
<body>
<%=#array%>
<hr>
<table border="1">
<% for k,v in pairs(array) do %>
<tr><td><%=k%></td><td><%=v%></td></tr>
<% end %>
</table>
</body>
</html>
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