unity 获得java数据，有接口地址，请求方式为POST，请求参数为{ "metroid": 279 }，返回结果为{ "returnCode": 0, "returnMessage": "调用成功", "data": [ { "doorfaultcount": 7, "doorsubhealthcount": 0, "carriageid": 1738, "carriageno": "01011", "carriagename": "HHHT01011", "doorinfolist": [ { "sort": 0, "doorid": 17414, "doorno": "222222222222222", "doorbusno": "01011", "side": "左", "pairid": null, "iskeydoor": false, "statuscode": "FAULT", "isfaultandsubhealth": null, "repaircode": "NOMAL", "exceptioncode": "NOMAL", "statusname": "故障", "faultcode": null, "faultname": null, "time": null, "updown": null, "paramvalueid1": null, "paramvalueid2": null, "paramvalueid3": null, "paramvalueid4": null, "paramvalueid5": null, "dataid": null, "doorstatus": 1 }，获得返回结果的"doorno"数据，并将"doorno"数据内容呈现在文本框中，unity webgl中的完整代码怎么写

在Unity中获得Java数据可以使用UnityWebRequest类，代码如下：

using UnityEngine;
using UnityEngine.Networking;
using UnityEngine.UI;

public class GetJavaData : MonoBehaviour
{
    public Text resultText;

    void Start()
    {
        StartCoroutine(GetData());
    }

    IEnumerator GetData()
    {
        //设置请求地址
        string url = "接口地址";
        //设置请求参数
        WWWForm form = new WWWForm();
        form.AddField("metroid", "279");
        //发送POST请求
        UnityWebRequest www = UnityWebRequest.Post(url, form);
        yield return www.SendWebRequest();
        //判断请求是否出错
        if (www.result != UnityWebRequest.Result.Success)
        {
            Debug.Log(www.error);
        }
        else
        {
            //解析返回的JSON数据
            string json = www.downloadHandler.text;
            JSONObject jsonObject = new JSONObject(json);
            string doorNo = jsonObject["data"][0]["doorinfolist"][0]["doorno"].str;
            //将数据呈现在文本框中
            resultText.text = doorNo;
        }
    }
}

注意：需要将"JSONObject.cs"和"JSONObjectAddons.cs"这两个文件添加到Unity项目中，可以在GitHub上下载。另外，为了能够在Unity WebGL中运行，需要将接口地址设置为支持跨域访问的地址。