public static string HttpGet(string url) { Encoding encoding = Encoding.UTF8; HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url); request.Method = "GET"; request.Accept = "text/html, application/xhtml+xml, */*"; request.ContentType = "application/json"; HttpWebResponse response = (HttpWebResponse)request.GetResponse(); using (StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8)) { return reader.ReadToEnd(); } }改成异步
时间: 2024-02-14 16:04:59 浏览: 19
可以将该方法改成异步方法,代码如下:
```
public static async Task<string> HttpGetAsync(string url)
{
Encoding encoding = Encoding.UTF8;
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
request.Method = "GET";
request.Accept = "text/html, application/xhtml+xml, */*";
request.ContentType = "application/json";
HttpWebResponse response = (HttpWebResponse)await request.GetResponseAsync();
using (StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8))
{
return await reader.ReadToEndAsync();
}
}
```
同样地,使用 `async` 和 `await` 关键字将网络请求部分改为异步操作,更加高效。
相关问题
var http = (HttpWebRequest)WebRequest.Create(url);用java怎么写
在Java中,你可以使用`HttpURLConnection`类来发送HTTP请求。下面是将C#中的代码转换为Java的示例:
```java
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
public class Main {
public static void main(String[] args) {
String url = "http://example.com";
try {
URL urlObj = new URL(url);
HttpURLConnection connection = (HttpURLConnection) urlObj.openConnection();
connection.setRequestMethod("GET");
int responseCode = connection.getResponseCode();
if (responseCode == HttpURLConnection.HTTP_OK) {
BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream()));
String line;
StringBuilder response = new StringBuilder();
while ((line = reader.readLine()) != null) {
response.append(line);
}
reader.close();
System.out.println(response.toString());
} else {
System.out.println("HTTP request failed. Response Code: " + responseCode);
}
} catch (Exception e) {
e.printStackTrace();
}
}
}
```
上述代码会发送一个GET请求到指定的URL,并打印出服务器的响应内容。你可以根据自己的需要进行适当的修改和扩展。
public static int HttpGet(string url, out string reslut) { reslut = ""; try { HttpWebRequest wbRequest = (HttpWebRequest)WebRequest.Create(url); wbRequest.Proxy = null; wbRequest.Method = "GET"; HttpWebResponse wbResponse = (HttpWebResponse)wbRequest.GetResponse(); using (Stream responseStream = wbResponse.GetResponseStream()) { using (StreamReader sReader = new StreamReader(responseStream)) { reslut = sReader.ReadToEnd(); } } } catch (Exception e) { reslut = e.Message; //输出捕获到的异常,用OUT关键字输出 return -1; //出现异常,函数的返回值为-1 } return 0; }
这是一段 C# 代码,包含了一个名为 HttpGet 的函数,参数为一个 URL 字符串和一个输出参数 reslut 字符串。该函数会向指定的 URL 发送 GET 请求,并将响应转换成字符串存储在 reslut 参数中。如果出现异常,该函数会返回 -1,否则返回 0。