w4-张思渊-202401070104

project/src/project/utils/HttpUtils.java

@@ -0,0 +1,30 @@
+package project.utils;
+
+import java.io.BufferedReader;
+import java.io.InputStreamReader;
+import java.net.HttpURLConnection;
+import java.net.URL;
+
+public class HttpUtils {
+    public static String getHtml(String url) throws Exception {
+        URL obj = new URL(url);
+        HttpURLConnection con = (HttpURLConnection) obj.openConnection();
+        con.setRequestMethod("GET");
+        con.setRequestProperty("User-Agent", "Mozilla/5.0");
+        
+        int responseCode = con.getResponseCode();
+        if (responseCode != HttpURLConnection.HTTP_OK) {
+            throw new Exception("HTTP error code: " + responseCode);
+        }
+        
+        BufferedReader in = new BufferedReader(new InputStreamReader(con.getInputStream(), "UTF-8"));
+        String inputLine;
+        StringBuilder html = new StringBuilder();
+        
+        while ((inputLine = in.readLine()) != null) {
+            html.append(inputLine);
+        }
+        in.close();
+        return html.toString();
+    }
+}