// 构造请求 UnityWebRequest request = new UnityWebRequest(url, "POST"); byte[] bodyRaw = System.Text.Encoding.UTF8.GetBytes(json); request.uploadHandler = (UploadHandler)new UploadHandlerRaw(bodyRaw); request.downloadHandler = (DownloadHandler)new DownloadHandlerBuffer(); request.SetRequestHeader("Content-Type", "application/json"); // 发送请求 yield return request.SendWebRequest(); // 处理返回结果 if (request.isNetworkError) { Debug.Log(request.error); resultText.text = request.error; }替换掉result,unity版本太老，总是报错

如果您的 Unity 版本太老，无法使用 Result 枚举类型，您可以使用以下方式替换代码中的 `request.isNetworkError`：

// 构造请求
UnityWebRequest request = new UnityWebRequest(url, "POST");
byte[] bodyRaw = System.Text.Encoding.UTF8.GetBytes(json);
request.uploadHandler = (UploadHandler)new UploadHandlerRaw(bodyRaw);
request.downloadHandler = (DownloadHandler)new DownloadHandlerBuffer();
request.SetRequestHeader("Content-Type", "application/json");

// 发送请求
yield return request.Send();

// 处理返回结果
if (request.isError)
{
    Debug.Log(request.error);
    resultText.text = request.error;
}

这段代码中使用了 `request.isError` 来判断是否发生网络错误。如果 `isError` 为 true，则表示发生了网络错误，可以通过 `request.error` 获取错误信息。

相关问题

using UnityEngine; using UnityEngine.Networking; using System.Collections; using System.Collections.Generic; using LitJson; public class Example : MonoBehaviour { public UnityEngine.UI.Text resultText; void Start() { StartCoroutine(PostRequest()); } IEnumerator PostRequest() { string url = "your_post_url_here"; string postData = "your_post_data_here"; // Send POST request UnityWebRequest request = new UnityWebRequest(url, "POST"); byte[] bodyRaw = System.Text.Encoding.UTF8.GetBytes(postData); request.uploadHandler = new UploadHandlerRaw(bodyRaw); request.downloadHandler = new DownloadHandlerBuffer(); request.SetRequestHeader("Content-Type", "application/json"); yield return request.SendWebRequest(); // Parse response if (request.result == UnityWebRequest.Result.Success) { string json = request.downloadHandler.text; JsonData data = JsonMapper.ToObject(json); string result = "Return Code: " + data["returnCode"] + "\n"; result += "Return Message: " + data["returnMessage"] + "\n"; result += "Data: " + data["data"] + "\n"; resultText.text = result; } else { Debug.Log(request.error); } } }修改代码

根据你提供的代码，可能会有以下几个问题：

1. 在 `UnityWebRequest` 类的构造函数中，第一个参数应该是请求的 URL 地址，而不是字符串 `"POST"`。你需要将 `url` 变量作为第一个参数传递给构造函数。

2. 在 `UnityWebRequest` 类的构造函数中，第二个参数应该是请求的 HTTP 方法，即 `"POST"` 或 `"GET"` 等。由于你的请求是 POST 请求，因此你需要将字符串 `"POST"` 作为第二个参数传递给构造函数。

3. 在发送请求之前，你需要设置请求的超时时间。可以使用 `request.timeout` 属性来设置超时时间，单位为秒。

4. 在请求头中，你设置了 `Content-Type` 为 `"application/json"`。如果你的请求数据不是 JSON 格式，那么你需要将 `Content-Type` 设置为相应的类型，例如 `"application/x-www-form-urlencoded"`。

下面是修改后的代码：

using UnityEngine;
using UnityEngine.Networking;
using System.Collections;
using System.Collections.Generic;
using LitJson;

public class Example : MonoBehaviour
{
    public UnityEngine.UI.Text resultText;

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

    IEnumerator PostRequest()
    {
        string url = "your_post_url_here";
        string postData = "your_post_data_here";

        // Send POST request
        UnityWebRequest request = new UnityWebRequest(url, "POST");
        byte[] bodyRaw = System.Text.Encoding.UTF8.GetBytes(postData);
        request.uploadHandler = new UploadHandlerRaw(bodyRaw);
        request.downloadHandler = new DownloadHandlerBuffer();
        request.SetRequestHeader("Content-Type", "application/json");
        request.timeout = 10;  // Set request timeout to 10 seconds
        yield return request.SendWebRequest();

        // Parse response
        if (request.result == UnityWebRequest.Result.Success)
        {
            string json = request.downloadHandler.text;
            JsonData data = JsonMapper.ToObject(json);
            string result = "Return Code: " + data["returnCode"] + "\n";
            result += "Return Message: " + data["returnMessage"] + "\n";
            result += "Data: " + data["data"] + "\n";
            resultText.text = result;
        }
        else
        {
            Debug.Log(request.error);
        }
    }
}

using System.Collections; using UnityEngine; using UnityEngine.Networking; using UnityEngine.UI; using LitJson; using System.Collections.Generic; public class GetData : MonoBehaviour { public Text resultText; IEnumerator Start() { // 定义接口地址和请求参数 string url = "http://158.58.50.21:8886/view/queryFaultAndSubhealthInfo"; string json = "{"lineid": 27, "areaid": 22, "starttime": "2023-05-07 09:54:22", "endtime": "2023-06-07 09:54:22", "datatype": 2, "pageSize": 5, "pageNumber": 1 }"; // 构造请求 UnityWebRequest request = new UnityWebRequest(url, "POST"); byte[] bodyRaw = System.Text.Encoding.UTF8.GetBytes(json); request.uploadHandler = (UploadHandler)new UploadHandlerRaw(bodyRaw); request.downloadHandler = (DownloadHandler)new DownloadHandlerBuffer(); request.SetRequestHeader("Content-Type", "application/json"); // 发送请求 yield return request.SendWebRequest(); // 处理返回结果 if (request.isError) { Debug.Log(request.error); resultText.text = request.error; } else { // 解析返回的 JSON 数据 JsonData jsonData = JsonMapper.ToObject(request.downloadHandler.text); // 获取需要的数据，将其显示在文本框中 string text = ""; foreach (JsonData item in jsonData["data"]["list"]) { text += item["doorno"].ToString() + " - " + item["faultname"].ToString() + " - " + item["happentime"].ToString() + "\n"; } resultText.text = text; } } }将请求方式改为post，java接口，unity webgl代码怎么写

Java 接口代码已经在上一个问题中给出，这里提供 Unity WebGL 的代码实现：

using System.Collections;
using UnityEngine;
using UnityEngine.Networking;
using UnityEngine.UI;
using LitJson;
using System.Collections.Generic;

public class GetData : MonoBehaviour {
    public Text resultText;

    IEnumerator Start() {
        // 定义接口地址
        string url = "http://158.58.50.21:8886/view/queryFaultAndSubhealthInfo";

        // 构造请求参数
        Dictionary<string, object> requestData = new Dictionary<string, object>();
        requestData["lineid"] = 27;
        requestData["areaid"] = 22;
        requestData["starttime"] = "2023-05-07 09:54:22";
        requestData["endtime"] = "2023-06-07 09:54:22";
        requestData["datatype"] = 2;
        requestData["pageSize"] = 5;
        requestData["pageNumber"] = 1;
        string json = JsonMapper.ToJson(requestData);

        // 构造请求
        UnityWebRequest request = new UnityWebRequest(url, "POST");
        byte[] bodyRaw = System.Text.Encoding.UTF8.GetBytes(json);
        request.uploadHandler = (UploadHandler)new UploadHandlerRaw(bodyRaw);
        request.downloadHandler = (DownloadHandler)new DownloadHandlerBuffer();
        request.SetRequestHeader("Content-Type", "application/json");

        // 发送请求
        yield return request.SendWebRequest();

        // 处理返回结果
        if (request.isNetworkError) {
            Debug.Log(request.error);
            resultText.text = request.error;
        } else {
            // 解析返回的 JSON 数据
            JsonData jsonData = JsonMapper.ToObject(request.downloadHandler.text);

            // 获取需要的数据，将其显示在文本框中
            string text = "";
            foreach (JsonData item in jsonData["data"]["list"]) {
                text += item["doorno"].ToString() + " - " + item["faultname"].ToString() + " - " + item["happentime"].ToString() + "\n";
            }
            resultText.text = text;
        }
    }
}

这里使用了 `Dictionary<string, object>` 来构造请求参数，并使用 `JsonMapper.ToJson` 方法将其转换为 JSON 格式的字符串。同时，需要注意在判断请求是否出错时，使用的是 `request.isNetworkError` 而不是 `request.isError`。