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scaner/src/main/java/org/example/HttpRequestUtil.java

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+package org.example;
+
+import java.io.OutputStream;
+import java.net.HttpURLConnection;
+import java.net.URL;
+
+public class HttpRequestUtil {
+    /**
+     * 向指定URL发送POST请求，发送JSON数据
+     * @param urlStr 目标接口地址
+     * @param jsonData 发送的JSON字符串
+     * @return 响应内容
+     * @throws Exception 网络异常
+     */
+    public static String postJson(String urlStr, String jsonData) throws Exception {
+        URL url = new URL(urlStr);
+        HttpURLConnection conn = (HttpURLConnection) url.openConnection();
+        conn.setRequestMethod("POST");
+        conn.setRequestProperty("Content-Type", "application/json; charset=UTF-8");
+        conn.setDoOutput(true);
+        conn.setDoInput(true);
+        try (OutputStream os = conn.getOutputStream()) {
+            os.write(jsonData.getBytes("UTF-8"));
+        }
+        int code = conn.getResponseCode();
+        if (code == 200) {
+            try (java.io.InputStream is = conn.getInputStream()) {
+                java.io.ByteArrayOutputStream baos = new java.io.ByteArrayOutputStream();
+                byte[] buffer = new byte[1024];
+                int len;
+                while ((len = is.read(buffer)) != -1) {
+                    baos.write(buffer, 0, len);
+                }
+                return new String(baos.toByteArray(), "UTF-8");
+            }
+        } else {
+            throw new RuntimeException("HTTP请求失败，状态码: " + code);
+        }
+    }
+
+    /**
+     * 向指定URL发送GET请求
+     * @param urlStr 目标接口地址
+     * @return 响应内容
+     * @throws Exception 网络异常
+     */
+    public static String get(String urlStr) throws Exception {
+        URL url = new URL(urlStr);
+        HttpURLConnection conn = (HttpURLConnection) url.openConnection();
+        conn.setRequestMethod("GET");
+        conn.setRequestProperty("Accept", "application/json");
+        conn.setDoInput(true);
+        int code = conn.getResponseCode();
+        if (code == 200) {
+            try (java.io.InputStream is = conn.getInputStream()) {
+                java.io.ByteArrayOutputStream baos = new java.io.ByteArrayOutputStream();
+                byte[] buffer = new byte[1024];
+                int len;
+                while ((len = is.read(buffer)) != -1) {
+                    baos.write(buffer, 0, len);
+                }
+                return new String(baos.toByteArray(), "UTF-8");
+            }
+        } else {
+            throw new RuntimeException("HTTP GET请求失败，状态码: " + code);
+        }
+    }
+}