SIM900 HTTP POST

AT+SAPBR=3,1,"CONTYPE","GPRS"

OK

AT+SAPBR=3,1,"APN","CMNET"  //CMNET是移动卡。如果是电信卡，设置为ctnb

OK

AT+SAPBR=1,1

OK

AT+HTTPINIT //初始化HTTP

OK

AT+HTTPPARA="URL","http://cloud.test.cn"    //设置URL参数

OK

AT+HTTPPARA="CONTENT","application/x-www-form-urlencoded"   //设置CONTENT参数

OK

AT+HTTPDATA=4,4000  //设置数据长度

DOWNLOAD
data    //数据

OK

AT+HTTPACTION=1 //POST

OK


+HTTPACTION: 1, 200, 11

AT+HTTPREAD=0,512   //读取返回数据

+HTTPREAD: 11
data    //返回数据
OK

AT+HTTPTERM //结束HTTP

OK

AT+SAPBR=0,1

OK