使用C#在Unity中發送HTTP請求

Unity 提供了可定制的網絡功能，允許開發者高效地通過互聯網交換數據。本指南將全面概述如何在Unity中使用C#和UnityWebRequest（Unity當前的網絡API）發送HTTP請求，涵蓋GET和POST操作。

GET請求

GET請求用於從服務器檢索數據。要使用UnityWebRequest發送GET請求，請使用以下代碼：

IEnumerator GetRequest(string uri)
{
    UnityWebRequest uwr = UnityWebRequest.Get(uri);
    yield return uwr.SendWebRequest();

    if (uwr.isNetworkError)
    {
        Debug.Log("发送错误: "   uwr.error);
    }
    else
    {
        Debug.Log("接收: "   uwr.downloadHandler.text);
    }
}

POST請求

POST請求用於向服務器發送數據。您可以發送表單數據和JSON數據。

使用表單數據的POST請求

IEnumerator PostRequest(string url)
{
    WWWForm form = new WWWForm();
    form.AddField("myField", "myData");
    form.AddField("Game Name", "Mario Kart");

    UnityWebRequest uwr = UnityWebRequest.Post(url, form);
    yield return uwr.SendWebRequest();

    if (uwr.isNetworkError)
    {
        Debug.Log("发送错误: "   uwr.error);
    }
    else
    {
        Debug.Log("接收: "   uwr.downloadHandler.text);
    }
}

使用JSON數據的POST請求

IEnumerator PostRequest(string url, string json)
{
    var uwr = new UnityWebRequest(url, "POST");
    byte[] jsonToSend = new System.Text.UTF8Encoding().GetBytes(json);
    uwr.uploadHandler = (UploadHandler)new UploadHandlerRaw(jsonToSend);
    uwr.downloadHandler = (DownloadHandler)new DownloadHandlerBuffer();
    uwr.SetRequestHeader("Content-Type", "application/json");

    yield return uwr.SendWebRequest();

    if (uwr.isNetworkError)
    {
        Debug.Log("发送错误: "   uwr.error);
    }
    else
    {
        Debug.Log("接收: "   uwr.downloadHandler.text);
    }
}

使用多部分錶單數據/多部分錶單文件的POST請求

IEnumerator PostRequest(string url)
{
    List formData = new List();
    formData.Add(new MultipartFormDataSection("field1=foo&field2=bar"));
    formData.Add(new MultipartFormFileSection("my file data", "myfile.txt"));

    UnityWebRequest uwr = UnityWebRequest.Post(url, formData);
    yield return uwr.SendWebRequest();

    if (uwr.isNetworkError)
    {
        Debug.Log("发送错误: "   uwr.error);
    }
    else
    {
        Debug.Log("接收: "   uwr.downloadHandler.text);
    }
}

PUT請求

IEnumerator PutRequest(string url)
{
    byte[] dataToPut = System.Text.Encoding.UTF8.GetBytes("Hello, This is a test");
    UnityWebRequest uwr = UnityWebRequest.Put(url, dataToPut);
    yield return uwr.SendWebRequest();

    if (uwr.isNetworkError)
    {
        Debug.Log("发送错误: "   uwr.error);
    }
    else
    {
        Debug.Log("接收: "   uwr.downloadHandler.text);
    }
}

DELETE請求

IEnumerator DeleteRequest(string url)
{
    UnityWebRequest uwr = UnityWebRequest.Delete(url);
    yield return uwr.SendWebRequest();

    if (uwr.isNetworkError)
    {
        Debug.Log("发送错误: "   uwr.error);
    }
    else
    {
        Debug.Log("已删除");
    }
}