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Update README.md for ArduinoJSON 6 #1135

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Update README.md for ArduinoJSON 6 #1135

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29 changes: 22 additions & 7 deletions README.md
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Expand Up @@ -333,7 +333,7 @@ Endpoints which consume JSON can use a special handler to get ready to use JSON
#include "ArduinoJson.h"

AsyncCallbackJsonWebHandler* handler = new AsyncCallbackJsonWebHandler("/rest/endpoint", [](AsyncWebServerRequest *request, JsonVariant &json) {
JsonObject& jsonObj = json.as<JsonObject>();
JsonObject& jsonObj = json.as<JsonObject>(); //For ArduinoJson 6 use "JsonObject jsonObj ="
// ...
});
server.addHandler(handler);
Expand Down Expand Up @@ -735,22 +735,38 @@ response->print("</body></html>");
request->send(response);
```

### ArduinoJson Basic Response
### ArduinoJson 5 Basic Response
This way of sending Json is great for when the result is below 4KB
```cpp
#include "AsyncJson.h"
#include "ArduinoJson.h"


AsyncResponseStream *response = request->beginResponseStream("application/json");
DynamicJsonBuffer jsonBuffer;
DynamicJsonBuffer jsonBuffer; //Note this buffer automatically expands
JsonObject &root = jsonBuffer.createObject();

root["heap"] = ESP.getFreeHeap();
root["ssid"] = WiFi.SSID();
root.printTo(*response);
request->send(response);
```

### ArduinoJson 6 Basic Response
This way of sending Json is great for when the result is below 4KB
```cpp
#include "AsyncJson.h"
#include "ArduinoJson.h"

DynamicJsonDocument jDoc(4096); //Note this buffer is a fixed size and cannot expand.
String response;

jDoc["heap"] = ESP.getFreeHeap();
jDoc["ssid"] = WiFi.SSID();
serializeJson(jdoc, response);
request->send(response);
request->send(200, "application/json", response);
```

### ArduinoJson Advanced Response
This response can handle really large Json objects (tested to 40KB)
There isn't any noticeable speed decrease for small results with the method above
Expand All @@ -761,10 +777,9 @@ to the resulting json packets
#include "AsyncJson.h"
#include "ArduinoJson.h"


AsyncJsonResponse * response = new AsyncJsonResponse();
response->addHeader("Server","ESP Async Web Server");
JsonObject& root = response->getRoot();
JsonObject& root = response->getRoot(); //For ArduinoJson 6 use "JsonObject root ="
root["heap"] = ESP.getFreeHeap();
root["ssid"] = WiFi.SSID();
response->setLength();
Expand Down Expand Up @@ -1109,7 +1124,7 @@ When sending a web socket message using the above methods a buffer is created.
```cpp
void sendDataWs(AsyncWebSocketClient * client)
{
DynamicJsonBuffer jsonBuffer;
DynamicJsonBuffer jsonBuffer; //For ArduinoJson 6 use DynamicJsonBuffer and skip createObject() below.
JsonObject& root = jsonBuffer.createObject();
root["a"] = "abc";
root["b"] = "abcd";
Expand Down