修改

src/main/java/com/ycwl/basic/utils/WxMpUtil.java

@@ -0,0 +1,39 @@
+package com.ycwl.basic.utils;
+
+import com.alibaba.fastjson.JSONObject;
+import org.apache.http.HttpEntity;
+import org.apache.http.client.methods.CloseableHttpResponse;
+import org.apache.http.client.methods.HttpPost;
+import org.apache.http.entity.StringEntity;
+import org.apache.http.impl.client.CloseableHttpClient;
+import org.apache.http.impl.client.HttpClients;
+import org.apache.http.util.EntityUtils;
+
+import java.io.FileOutputStream;
+
+public class WxMpUtil {
+    private static final String GET_WXA_CODE_URL = "https://api.weixin.qq.com/wxa/getwxacode?access_token=%s";
+
+    public static void generateWXAQRCode(String accessToken, String path, String filePath) throws Exception {
+        String url = String.format(GET_WXA_CODE_URL, accessToken);
+        CloseableHttpClient httpClient = HttpClients.createDefault();
+        HttpPost httpPost = new HttpPost(url);
+        JSONObject json = new JSONObject();
+        json.put("path", path);
+        json.put("width", 430);
+        StringEntity entity = new StringEntity(json.toJSONString(), "utf-8");
+        httpPost.setEntity(entity);
+        httpPost.setHeader("Content-Type", "application/json");
+
+        try (CloseableHttpResponse response = httpClient.execute(httpPost)) {
+            HttpEntity responseEntity = response.getEntity();
+            if (responseEntity != null) {
+                byte[] bytes = EntityUtils.toByteArray(responseEntity);
+                try (FileOutputStream fos = new FileOutputStream(filePath)) {
+                    fos.write(bytes);
+                }
+            }
+        }
+    }
+
+}