Question

我想使用WWW类将JSON发布到网站，但我从服务器得到了这个答案：“同步问题。”。有没有办法从同步更改为异步？谢谢

Answer 1

您可以在协程中运行您的WWW作业（WWW支持这个）：

using UnityEngine;

public class PostJSON : MonoBehaviour {

    void Start () {

        string url = "http://your_url_endpoint";

        WWWForm form = new WWWForm();
        Hashtable headers = form.headers;
        headers["Content-Type"] = "application/json";
        Hashtable data = new Hashtable();
        data["message"] = "a sample message sent to service as json";
        string json = JSON.JsonEncode(data);

        byte[] bytes = Encoding.UTF8.GetBytes(json);
        WWW www = new WWW(url, bytes, headers);

        StartCoroutine(WaitForRequest(www));
    }

    IEnumerator WaitForRequest(WWW www)
    {
        yield return www

        // check for errors
        if (www.error == null)
        {
            Debug.Log("WWW Ok!: " + www.data);
        } else {
            Debug.Log("WWW Error: "+ www.error);
        }    
    }    
}

这里有一个正在运行的项目，我用它来与基于json的REST服务KiiCloud交谈：

http://blog.kii.com/?p=2939

HTH

Answer 2

德语的答案非常有用，但我做了一些调整，以便编译和运行（使用样本序列化/反序列化位）。

只需传入您要发布的BaseUrl，即 http://www.domain.com/somecontroller/someaction或其他什么。

using System;
using System.Text;
using System.Collections;
using System.Collections.Generic;

using UnityEngine;

[Serializable]
public class Person
{
    public string Name;
}

[Serializable]
public class Response
{
    public string SomeValue;
}

public class PostJSON : MonoBehaviour
{
    public string BaseUrl;

    private WWWForm form;
    private Dictionary<string, string> headers = null;

    void Start () 
    {
        var basUrlNotSpecified = string.IsNullOrEmpty(BaseUrl);

        if(basUrlNotSpecified) 
        {
            Debug.LogWarning("BaseUrl value not specified. Post abandoned.");
            return;
        }

        form = new WWWForm();
        headers = form.headers;
        headers["Content-Type"] = "application/json";
        headers["Accept"] = "application/json";

        var person = new Person
        {
            Name = "Iulian Palade"
        };

        var json = JsonUtility.ToJson(person);

        byte[] bytes = Encoding.UTF8.GetBytes(json);

        WWW www = new WWW(BaseUrl, bytes, headers);

        StartCoroutine(WaitForRequest(www));
    }

    IEnumerator WaitForRequest(WWW www)
    {
        yield return www;

        if (www.error == null)
        {
            Debug.Log("WWW Ok!: " + www.text);
            var response = JsonUtility.FromJson<Response>(www.text);
            Debug.Log(response.SomeValue);
        } 
        else 
        {
            Debug.Log("WWW Error: "+ www.error);
        }    
    }    
}

Unity3D WWW发布数据异步

2 个答案: