fix: align WCS vehicle snapshot method

ruoyi-admin/src/main/java/com/ruoyi/algorithm/wms/tidy/WcsVehicleSnapshotClient.java

@@ -1,6 +1,6 @@
 package com.ruoyi.algorithm.wms.tidy;
 
-import cn.hutool.http.HttpUtil;
+import cn.hutool.http.HttpRequest;
 import cn.hutool.json.JSONUtil;
 import com.ruoyi.algorithm.integration.AlgorithmProperties;
 import org.slf4j.Logger;
@@ -26,7 +26,7 @@ public class WcsVehicleSnapshotClient {
             return List.of();
         }
         try {
-            String body = HttpUtil.get(url, 3_000);
+            String body = HttpRequest.post(url).timeout(3_000).execute().body();
             if (body == null || body.isBlank()) {
                 return List.of();
             }

ruoyi-admin/src/test/java/com/ruoyi/algorithm/wms/tidy/WcsVehicleSnapshotClientTest.java

@@ -0,0 +1,66 @@
+package com.ruoyi.algorithm.wms.tidy;
+
+import com.ruoyi.algorithm.integration.AlgorithmProperties;
+import com.sun.net.httpserver.HttpExchange;
+import com.sun.net.httpserver.HttpServer;
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.Test;
+
+import java.io.IOException;
+import java.net.InetSocketAddress;
+import java.nio.charset.StandardCharsets;
+import java.util.List;
+import java.util.concurrent.atomic.AtomicReference;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+class WcsVehicleSnapshotClientTest {
+    private HttpServer server;
+
+    @AfterEach
+    void stopServer() {
+        if (server != null) {
+            server.stop(0);
+        }
+    }
+
+    @Test
+    void fetchPostsToTheWcsVehicleSnapshotContract() throws IOException {
+        AtomicReference<String> requestMethod = new AtomicReference<>();
+        server = HttpServer.create(new InetSocketAddress("127.0.0.1", 0), 0);
+        server.createContext("/wcs2Wms/api/tidyVehicleSnapshot", exchange -> {
+            requestMethod.set(exchange.getRequestMethod());
+            if (!"POST".equals(exchange.getRequestMethod())) {
+                sendJson(exchange, 405, "{\"code\":405,\"msg\":\"method not allowed\"}");
+                return;
+            }
+            sendJson(exchange, 200, """
+                    {"code":200,"data":[{
+                      "guid":"SRGV-1","online":true,"healthy":true,"idle":true
+                    }]}
+                    """);
+        });
+        server.start();
+
+        AlgorithmProperties properties = new AlgorithmProperties();
+        properties.setTidyWcsSnapshotUrl("http://127.0.0.1:" + server.getAddress().getPort()
+                + "/wcs2Wms/api/tidyVehicleSnapshot");
+
+        List<VehicleSnapshot> snapshots = new WcsVehicleSnapshotClient(properties).fetch();
+
+        assertThat(requestMethod.get()).isEqualTo("POST");
+        assertThat(snapshots).containsExactly(new VehicleSnapshot("SRGV-1", true, true, true, ""));
+    }
+
+    private static void sendJson(HttpExchange exchange, int status, String json) throws IOException {
+        byte[] body = json.getBytes(StandardCharsets.UTF_8);
+        try {
+            exchange.getRequestBody().readAllBytes();
+            exchange.getResponseHeaders().set("Content-Type", "application/json; charset=utf-8");
+            exchange.sendResponseHeaders(status, body.length);
+            exchange.getResponseBody().write(body);
+        } finally {
+            exchange.close();
+        }
+    }
+}