【c#编程技术总结】UnityWebRequest用法总结测试＜一＞

群里有人问UnityWebRequest的用法，因为本人之前用的也不多只用过Post请求获取服务端数据，就想着把相关的用法总结一下，懒得描述具体用法了，懂得人自然懂，哈哈

 void Start()
    {
        //访问网站
        WebRequestManager.Instance.Get("http://www.huanshj.com/", (a) => { Debug.LogError(a.isDone); });
        //下载服务器视频文件
        WebRequestManager.Instance.DownloadFile("http://www.huanshj.com/World/Videos/1.mp4", Application.dataPath + "/HSJExample/UnityWebRequest/aaa.mp4", (a) => { Debug.LogError(a.downloadProgress); });
        //下载服务器图片文件
        WebRequestManager.Instance.GetTexture("http://www.huanshj.com/Private/Wedding/Pictures/Xu001.jpg", (a) => { rawImage.texture = a; });

    }

#region 模块信息
// **********************************************************************
// Copyright (C) 2020 
// Please contact me if you have any questions
// File Name:             WebRequestManager
// Author:                幻世界
// QQ:                    853394528 
// **********************************************************************
#endregion
using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using UnityEngine;
using UnityEngine.Experimental.PlayerLoop;
using UnityEngine.Networking;


public class WebRequestManager : BaseManager
{

    public void Get(string url, Action actionResult)
    {
        StartCoroutine(_Get(url, actionResult));
    }

    public void DownloadFile(string url, string downloadFilePathAndName, Action actionResult)
    {
        StartCoroutine(_DownloadFile(url, downloadFilePathAndName, actionResult));
    }

    public void GetTexture(string url, Action actionResult)
    {
        StartCoroutine(_GetTexture(url, actionResult));
    }

    public void GetAssetBundle(string url, Action actionResult)
    {
        StartCoroutine(_GetAssetBundle(url, actionResult));
    }

    public void GetAudioClip(string url, Action actionResult, AudioType audioType = AudioType.WAV)
    {
        StartCoroutine(_GetAudioClip(url, actionResult, audioType));
    }

    public void Post(string serverURL, WWWForm wWWForm, Action actionResult)
    {
        wWWForm.AddField("test","我是测试内容");
        StartCoroutine(_Post(serverURL, wWWForm, actionResult));
    }

    /// 
    /// 通过PUT方式将字节流传到服务器
    /// 
    /// 需要上传的字节流
    /// 处理返回结果的委托
    /// 
    public void UploadByPut(string url, byte[] contentBytes, Action actionResult)
    {
        StartCoroutine(_UploadByPut(url, contentBytes, actionResult, ""));
    }

    /// 
    /// GET请求
    /// 
    /// 请求发起后处理回调结果的委托
    /// 
    IEnumerator _Get(string url, Action actionResult)
    {
        using (UnityWebRequest uwr = UnityWebRequest.Get(url))
        {
            yield return uwr.SendWebRequest();
            actionResult?.Invoke(uwr);
        }
    }

    /// 下载文件
    UnityWebRequest uwr;
    IEnumerator _DownloadFile(string url, string downloadFilePathAndName, Action actionResult)
    {
        uwr = new UnityWebRequest(url, UnityWebRequest.kHttpVerbGET);
        uwr.downloadHandler = new DownloadHandlerFile(downloadFilePathAndName);

        yield return uwr.SendWebRequest();
        actionResult?.Invoke(uwr);
    }
    float a;
    
    protected override void Update()
    {
        if (uwr!=null)
        {
            Debug.Log(uwr.downloadProgress);
        }
    }
    /// 请求图片
    IEnumerator _GetTexture(string url, Action actionResult)
    {
        UnityWebRequest uwr = new UnityWebRequest(url);
        DownloadHandlerTexture downloadTexture = new DownloadHandlerTexture(true);
        uwr.downloadHandler = downloadTexture;
        yield return uwr.SendWebRequest();
        Texture2D t = null;
        if (!(uwr.isNetworkError || uwr.isHttpError))
        {
            t = downloadTexture.texture;
        }
        actionResult?.Invoke(t);
    }

    /// 请求AssetBundle
    IEnumerator _GetAssetBundle(string url, Action actionResult)
    {
        UnityWebRequest www = new UnityWebRequest(url);
        DownloadHandlerAssetBundle handler = new DownloadHandlerAssetBundle(www.url, uint.MaxValue);
        www.downloadHandler = handler;
        yield return www.SendWebRequest();
        AssetBundle bundle = null;
        if (!(www.isNetworkError || www.isHttpError))
        {
            bundle = handler.assetBundle;
        }
        actionResult?.Invoke(bundle);
    }

    //音效
    IEnumerator _GetAudioClip(string url, Action actionResult, AudioType audioType = AudioType.WAV)
    {
        using (var uwr = UnityWebRequestMultimedia.GetAudioClip(url, audioType))
        {
            yield return uwr.SendWebRequest();
            if (!(uwr.isNetworkError || uwr.isHttpError))
            {
                actionResult?.Invoke(DownloadHandlerAudioClip.GetContent(uwr));
            }
        }
    }

    /// 向服务器提交post请求
    IEnumerator _Post(string serverURL, WWWForm wWWForm, Action actionResult)
    {   
        UnityWebRequest uwr = UnityWebRequest.Post(serverURL, wWWForm);
        yield return uwr.SendWebRequest();
        actionResult?.Invoke(uwr);
    }

    /// 
    /// 通过PUT方式将字节流传到服务器
    /// 
    /// 需要上传的字节流
    /// 处理返回结果的委托
    /// 设置header文件中的Content-Type属性
    /// 
    IEnumerator _UploadByPut(string url, byte[] contentBytes, Action actionResult, string contentType = "application/octet-stream")
    {
        UnityWebRequest uwr = new UnityWebRequest();
        UploadHandler uploader = new UploadHandlerRaw(contentBytes);

        uploader.contentType = contentType;

        uwr.uploadHandler = uploader;

        yield return uwr.SendWebRequest();

        bool res = true;
        if (uwr.isNetworkError || uwr.isHttpError)
        {
            res = false;
        }
        actionResult?.Invoke(res);
    }
}