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使用ngx_lua模块(http://wiki.nginx.org/HttpLuaModule)： local request_method = ngx.var.request_method local args = nil local param = nil local param2 = nil --获取参数的值 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"] 升级版(能处理content-type=multipart/form-data的表单)： 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() elseif "POST" == request_method then ngx.req.read_body() if string.sub(receive_headers["content-type"],1,20) == "multipart/form-data;" then--判断是否是multipart/form-data类型的表单 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协议的请求体，不是普通的字符串 --请求体的size大于nginx配置里的client_body_buffer_size，则会导致请求体被缓冲到磁盘临时文件里，client_body_buffer_size默认是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 = {} --确保取到请求体的数据 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--普通参数 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--文件类型的参数，capture是参数名称，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等几个参数，把业务级别的参数传给内部的API body_data = table.concat(new_body_data,boundary)--body_data可是符合http协议的请求体，不是普通的字符串 end else args = ngx.req.get_post_args() end end end |
