In many cases we need to pass json data to the backend for use. Here are two solutions.
Option One:
private void Start()
{
string url="xxx";
string json="一个Json格式的数据，这里大家替换成自己想要测试的Json数据";
StartCoroutine(I_RequestByJsonBodyPost(url,json));
}
private static IEnumerator I_RequestByJsonBodyPost(string url, string json)
{
UnityWebRequest www = new UnityWebRequest(url, UnityWebRequest.kHttpVerbPOST);
DownloadHandler downloadHandler = new DownloadHandlerBuffer();
www.downloadHandler = downloadHandler;
www.SetRequestHeader("Content-Type", "application/json;charset=utf-8");
byte[] bodyRaw = Encoding.UTF8.GetBytes(json);
www.uploadHandler = new UploadHandlerRaw(bodyRaw);
yield return www.SendWebRequest();
Debug.Log(www.downloadHandler.text);
}
In order to ensure that the front end sends data in Json format so that the back end can parse it normally, the Content-Type in the request header must be set to "application/json"
Option II:
private void Start()
{
string url="xxx";
string json="一个Json格式的数据，这里大家替换成自己想要测试的Json数据";
StartCoroutine(I_RequestByJsonBodyPost(url,json));
}
private static IEnumerator I_RequestByJsonBodyPost(string url, string json)
{
UnityWebRequest www = UnityWebRequest.Post(url, json);
www.SetRequestHeader("Content-Type", "application/json;charset=utf-8");
byte[] bodyRaw = Encoding.UTF8.GetBytes(json);
www.uploadHandler = new UploadHandlerRaw(bodyRaw);
yield return www.SendWebRequest();
Debug.Log(www.downloadHandler.text);
}
Because UnityWebRequest.Post treats Content-Type as application/x-www-form-urlencoded by default, the string we pass in will be URLEncoded, so we can only manually create an uploadHandler to overwrite the original uploadHandler.