Unity 中通过UnityWebRequest POST和GET请求服务器数据

一、Unity中UnityWebRequest POST和GET请求数据

1、Unity 中通过UnityWebRequest  以POST形式传JSON格式（键值对格式）的参数请求数据。

注意： 1、webRequest.SetRequestHeader("Content-Type", "application/json");内容根据实际提供内容为准。

            2、需要以Header头文件的形式发送请求

 POST请求实现以下要求 

POST  "https://.....";        //提供获取Token值的服务接口地址（很重要）

入参body(json格式)：
{
  "username":"后端提供",
  "password":"后端提供",
  "clientType": "WEB",
  "pid":"01967189376"
}

    private string jsonDataPost;
    public string login_URL;
    public string getData_URL;

    void Start()
    {
        login_URL = "https://......;"//提供获取Token值的服务地址（很重要）
        getData_URL = "https://.......";//提供请求数据的URL地址

        jsonDataPost = File.ReadAllText(Application.streamingAssetsPath + "/LoginData.txt");
        //jsonDataPost = "{ \"username\":\"159\", \"password\":\"hhhhhh\",\"clientType\": \"WEB\",\"pid\":\"01967189376\"}";//传JSON格式参数定义,具体根据提供的JOSN数据为准
       
        StartCoroutine(PostUrl(login_URL, jsonDataPost));
    }

    /// <summary>
    /// POST请求数据
    /// </summary>
    /// <param name="url">获取Token值的服务URL地址（很重要）</param>
    /// <param name="postData">传入请求的参数，此处参数为JOSN格式</param>
    /// <returns></returns>
    IEnumerator PostUrl(string url, string postData)
    {
        using (UnityWebRequest webRequest = new UnityWebRequest(url, "POST"))//第二种写法此行注释
        {
            //UnityWebRequest webRequest = new UnityWebRequest(url, "POST");//第二种写法此行取消注释
            byte[] postBytes = System.Text.Encoding.UTF8.GetBytes(postData);
            webRequest.uploadHandler = (UploadHandler)new UploadHandlerRaw(postBytes);
            webRequest.downloadHandler = (DownloadHandler)new DownloadHandlerBuffer();
            webRequest.SetRequestHeader("Content-Type", "application/json");

            yield return webRequest.Send();
            if (webRequest.isNetworkError)
            {
                Debug.Log(webRequest.error);
            }
            else
            {
                TokenDataInfo tokenDataInfo = JsonMapper.ToObject<TokenDataInfo>(webRequest.downloadHandler.text);
                access_token = tokenDataInfo.access_token;
                refresh_token = tokenDataInfo.refresh_token;
                token_type = tokenDataInfo.token_type;
                authorization = token_type + " " + access_token;

                //Debug.LogError(authorization);
                //Debug.LogError(webRequest.downloadHandler.text);
                StartCoroutine( GetUrl(getData_URL, authorization));

            }
        }
    }

2、Unity 中通过UnityWebRequest  以GET形式传authorization 的参数请求数据。

注意：  以Header头文件的形式发送请求，authorization要放入请求头部。

GET请求实现以下要求

GET "https://.....";        //提供请求数据的URL地址，以头文件形式发起请求进行Token验证

请求头带上
authorization
bearer eyJhbGciOiJSUzI1NiIsInR5cCI6IkpXVCJ9.eyJ1aWQiOiI3MDE1MTQ0NzM0NSIsInBpZCI6IjAxOTY3MTg5Mzc2IiwiZW50IjoiMDE5NjcxODkzNzYiLCJ0eXBlIjoiV0VCIiwiZXhwIjoxNTYwNjA2MjIwLCJqdGkiOiJkNDlhZWFkMi1lM2FhLTQ5MGItYWZiMC1iNmVmNDNmMTY5Y2UiLCJyb2xlcyI6W119.Vdumf8OOcLnfu8i2KiP7qzN1nPmSXmcwnH74LKFsydImgcVIBMT9rV4zCz8UnJxQq55XIQr1IjiAe1cIYEtESw==

    /// <summary>
    /// GET请求数据
    /// </summary>
    /// <param name="url">请求数据的URL地址</param>
    /// <param name="token">token验证的参数，此处为authorization</param>
    /// <returns></returns>
    IEnumerator GetUrl(string url, string token)
    {
        using (UnityWebRequest webRequest = new UnityWebRequest(url, "GET"))
        {
            //UnityWebRequest webRequest = new UnityWebRequest(url, "GET");
            byte[] postBytes = System.Text.Encoding.UTF8.GetBytes(token);
            webRequest.uploadHandler = (UploadHandler)new UploadHandlerRaw(postBytes);
            webRequest.downloadHandler = (DownloadHandler)new DownloadHandlerBuffer();
            webRequest.SetRequestHeader("authorization", token);//请求头文件内容

            yield return webRequest.Send();
            if (webRequest.isNetworkError)
            {
                Debug.Log(webRequest.error);
            }
            else
            {

                Debug.LogError(webRequest.downloadHandler.text);
            }
        }
    }

二、更新后UnityWebRequest请求数据的方式。

1、Unity 中通过UnityWebRequest  以Post形式传Form 表单参数请求数据。

    /// <summary>
    /// UnityWebRequest Post 表单请求
    /// </summary>
    /// <param name="url">接口地址</param>
    /// <param name="fromDic">form字典</param>
    /// <param name="callBack">回调</param>
    /// <returns></returns>
    public static IEnumerator UnityWebRequestPost(string url, Dictionary<string, string> fromDic, Action<string> callBack = null)
    {
        WWWForm form = new WWWForm();
        foreach (var item in fromDic)
        {
            form.AddField(item.Key, item.Value);
        }
        UnityWebRequest request = UnityWebRequest.Post(url, form);
        request.SetRequestHeader("Content-Type", "application/x-www-form-urlencoded");
        yield return request.SendWebRequest();
        if (request.result == UnityWebRequest.Result.ConnectionError)
        {
            Debug.LogError(request.error);
        }
        else
        {
            string result = request.downloadHandler.text;
            callBack?.Invoke(result);
        }
    }

2、Unity 中通过UnityWebRequest  以Post形式传JOSN格式参数请求数据。

 /// <summary>
    /// POST请求数据
    /// </summary>
    /// <param name="url"></param>
    /// <param name="postData">传入请求的参数，此处参数为JOSN格式</param>
    /// <returns></returns>
    public static IEnumerator UnityWebRequestPost(string url, string postData, Action<string> callBack = null)
    {
        using (UnityWebRequest webRequest = new UnityWebRequest(url, "POST"))//第二种写法此行注释
        {
            //UnityWebRequest webRequest = new UnityWebRequest(url, "POST");//第二种写法此行取消注释
            byte[] postBytes = System.Text.Encoding.UTF8.GetBytes(postData);
            webRequest.uploadHandler = (UploadHandler)new UploadHandlerRaw(postBytes);
            webRequest.downloadHandler = (DownloadHandler)new DownloadHandlerBuffer();
            webRequest.SetRequestHeader("Content-Type", "application/json");

            yield return webRequest.SendWebRequest();
            if (webRequest.result == UnityWebRequest.Result.ConnectionError)
            {
                Debug.Log(webRequest.error);
            }
            else
            {
                string result = webRequest.downloadHandler.text;
                callBack?.Invoke(result);
            }
        }
    }