diff --git a/cloud-mart-server/src/main/java/com/muyu/cloud/mart/utils/PostcodeInquire.java b/cloud-mart-server/src/main/java/com/muyu/cloud/mart/utils/PostcodeInquire.java
new file mode 100644
index 0000000..5da3f3e
--- /dev/null
+++ b/cloud-mart-server/src/main/java/com/muyu/cloud/mart/utils/PostcodeInquire.java
@@ -0,0 +1,59 @@
+package com.muyu.cloud.mart.utils;
+
+import java.io.BufferedReader;
+import java.io.InputStreamReader;
+import java.net.MalformedURLException;
+import java.net.URL;
+import java.net.URLEncoder;
+import java.nio.charset.StandardCharsets;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.stream.Collectors;
+/**
+ * @Author：chaiyapeng
+ * @Package：com.muyu.cloud.mart.utils
+ * @Project：cloud-mart
+ * @name：Postcode
+ * @Date：2024/8/24 20:50
+ */
+public class PostcodeInquire {
+
+    public static StringBuffer queryPostcode(){
+        String apiKey = "0cabcd31c150369d8afb2c8b7e41a2c0";
+        String apiUrl = "http://v.juhe.cn/postcode/query";
+
+        HashMap<String, String> map = new HashMap<>();
+        map.put("key", apiKey);
+        map.put("postcode", "xxx");
+        map.put("page", "20");
+        map.put("pagesize", "");
+        map.put("dtype", "json");
+        try {
+            URL url = new URL(String.format(apiUrl + "?" + params(map)));
+            BufferedReader in = new BufferedReader(new InputStreamReader((url.openConnection()).getInputStream()));
+            String inputLine;
+            StringBuffer response = new StringBuffer();
+            while ((inputLine = in.readLine()) != null) {
+                response.append(inputLine);
+            }
+            in.close();
+            System.out.println(response);
+            return response;
+        } catch (Exception e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    public static String params(Map<String, String> map) {
+        return map.entrySet().stream()
+                .map(entry -> {
+                    try {
+                        return entry.getKey() + "=" + URLEncoder.encode(entry.getValue(), StandardCharsets.UTF_8.toString());
+                    } catch (Exception e) {
+                        e.printStackTrace();
+                        return entry.getKey() + "=" + entry.getValue();
+                    }
+                })
+                .collect(Collectors.joining("&"));
+    }
+}