esp8266连接本地wifi。作为web client get 天气信息。
天气网站链接如下：
https://api.thinkpage.cn/v3/weather/now.json?key=wcmquevztdy1jpca&location=tianjin&language=en&unit=c
返回数据如下：
{"results":[{"location":{"id":"WWGQDCW6TBW1","name":"Tianjin","country":"CN","path":"Tianjin,Tianjin,China","timezone":"Asia/Shanghai","timezone_offset":"+08:00"},"now":{"text":"Cloudy","code":"4","temperature":"3"},"last_update":"2018-03-15T20:20:00+08:00"}]}
每秒申请一次，并解析json。
全部代码如下：
-- init.lua----------------------- wifi---------------------print('Setting up WIFI...')wifi.setmode(wifi.STATION)station_cfg={}station_cfg.ssid="NodeMCU"station_cfg.pwd="12345678"station_cfg.save=truewifi.sta.config(station_cfg)tmr.alarm(0, 1000, tmr.ALARM_AUTO, function() if wifi.sta.getip() == nil then print('Waiting for IP ...') else print('IP is ' .. wifi.sta.getip()) tmr.stop(0) endend)tmr.alarm(1, 1000, tmr.ALARM_AUTO, function() if wifi.sta.getip() ~= nil then srv=net.createConnection(net.TCP,0) srv:on("receive", function(conn, pl) print(pl) --value = sjson.decode(pl) i,j=string.find(pl, "{") sjson_str=string.sub(pl, i) --print(sjson_str) local sjson = require("sjson"); local json = sjson.decode(sjson_str); print(" City: " ..json.results[1]["location"]["name"]) print(" Weather: " ..json.results[1]["now"]["text"]) print(" Temperature: " ..json.results[1]["now"]["temperature"] .." C\n") end) srv:on("connection", function(conn, pl) conn:send("GET /v3/weather/now.json?key=ptgoijxvh94mo6de&location=tianjin&language=en&unit=c HTTP/1.1\r\nHost: api.seniverse.com\r\nConnection: keep-alive\r\nAccept: */*\r\n\r\n") end) srv:connect(80,"api.seniverse.com") endend)
