[转]中国移动OneNet平台上传GPS数据JSON格式 - 神秘藏宝室 - 博客园

(转载请删除括号里的内容)

最终目的输出

POST /devices/3225187/datapoints HTTP/1.1api-key: R9xO5NZm6oVI4YBHvCPKEqtwYtMAHost: api.heclouds.comContent-Length:81{"datastreams":[{"id":"location","datapoints":[{"value":{"lon":106,"lat":29}}]}]}

1. 使用arduino代码组合出来HTTP头

使用OneNet官方提供的Httppacket库

#include <HttpPacket.h>HttpPacketHead packet;void setup() {  // put your setup code here, to run once:  Serial.begin(9600);  while (!Serial) {    ; // wait for serial port to connect. Needed for Leonardo only  }    // put your main code here, to run repeatedly:  // char *p = "{\"datastreams\":[{\"id\":\"sys_time\",\"datapoints\":[{\"value\":50}]}]}";  char *p = "{\"datastreams\":[{\"id\":\"location\",\"datapoints\":[{\"value\":{\"lon\":106,\"lat\":29}}]}]}";    packet.setHostAddress("api.heclouds.com");  packet.setDevId("3225187");   //device_id  packet.setAccessKey("R9xO5NZm6oVI4YBHvCPKEqtwYtMA");  //API_KEY  // packet.setDataStreamId("<datastream_id>");    //datastream_id  // packet.setTriggerId("<trigger_id>");  // packet.setBinIdx("<bin_index>");  /*create the http message about add datapoint */  packet.createCmdPacket(POST, TYPE_DATAPOINT, p);  if (strlen(packet.content))    Serial.print(packet.content);  Serial.print(p);  Serial.println("\n");}

2.使用JSON库合成JSON数据

#include <ArduinoJson.h>void setup() {  Serial.begin(9600);  StaticJsonBuffer<200> jsonBuffer;  JsonObject& lon_lat = jsonBuffer.createObject();  lon_lat["lon"] = 106;  lon_lat["lat"] = 29;  JsonObject& value = jsonBuffer.createObject();  value["value"] = lon_lat;  JsonObject& id_datapoints = jsonBuffer.createObject();  id_datapoints["id"] = "location";  JsonArray& datapoints = id_datapoints.createNestedArray("datapoints");  datapoints.add(value);  JsonObject& myJson = jsonBuffer.createObject();  JsonArray& datastreams = myJson.createNestedArray("datastreams");  datastreams.add(id_datapoints);  myJson.printTo(Serial);  Serial.print("\r\n\r\n");  //格式化输出  myJson.prettyPrintTo(Serial);  char p[200];  Serial.print("\r\n---------\r\n");  int num = myJson.printTo(p,sizeof(p));  Serial.print(p);  Serial.print("\r\n============\r\n");  Serial.print(num);}void loop() {  // not used in this example}

串口输出效果

{"datastreams":[{"id":"location","datapoints":[{"value":{"lon":106,"lat":29}}]}]}{  "datastreams": [    {      "id": "location",      "datapoints": [        {          "value": {            "lon": 106,            "lat": 29          }        }      ]    }  ]}---------{"datastreams":[{"id":"location","datapoints":[{"value":{"lon":106,"lat":29}}]}]}============81

3. 综合HTTP头和JSON输出需要的POST请求

#include <HttpPacket.h>#include <ArduinoJson.h>HttpPacketHead packet;void setup() {  // put your setup code here, to run once:  Serial.begin(9600);  while (!Serial) {    ; // wait for serial port to connect. Needed for Leonardo only  }  //合成POST请求  StaticJsonBuffer<200> jsonBuffer;  JsonObject& lon_lat = jsonBuffer.createObject();  lon_lat["lon"] = 106;  lon_lat["lat"] = 29;  JsonObject& value = jsonBuffer.createObject();  value["value"] = lon_lat;  JsonObject& id_datapoints = jsonBuffer.createObject();  id_datapoints["id"] = "location";  JsonArray& datapoints = id_datapoints.createNestedArray("datapoints");  datapoints.add(value);  JsonObject& myJson = jsonBuffer.createObject();  JsonArray& datastreams = myJson.createNestedArray("datastreams");  datastreams.add(id_datapoints);  char p[200];  int num = myJson.printTo(p,sizeof(p));    packet.setHostAddress("api.heclouds.com");  packet.setDevId("3225187");   //device_id  packet.setAccessKey("R9xO5NZm6oVI4YBHvCPKEqtwYtMA");  //API_KEY  // packet.setDataStreamId("<datastream_id>");    //datastream_id  // packet.setTriggerId("<trigger_id>");  // packet.setBinIdx("<bin_index>");  /*create the http message about add datapoint */  packet.createCmdPacket(POST, TYPE_DATAPOINT, p);  if (strlen(packet.content))    Serial.print(packet.content);  Serial.print(p);

成功输出

POST /devices/3225187/datapoints HTTP/1.1api-key: R9xO5NZm6oVI4YBHvCPKEqtwYtMAHost: api.heclouds.comContent-Length:81{"datastreams":[{"id":"location","datapoints":[{"value":{"lon":106,"lat":29}}]}]}