fix：优化拼接参数下发

ruoyi-common/src/main/java/com/ruoyi/common/utils/http/Sending.java

@@ -9,6 +9,7 @@ import org.springframework.stereotype.Component;
 import org.springframework.web.client.RestTemplate;
 
 import java.lang.reflect.Field;
+import java.util.Collection;
 import java.util.HashMap;
 import java.util.Map;
 
@@ -60,6 +61,10 @@ public class Sending<T> {
             StringBuilder urlBuilder = new StringBuilder(url);
             urlBuilder.append("?");
             for (Map.Entry<String, Object> entry : params.entrySet()) {
+                if (entry.getValue() instanceof Collection && ((Collection<?>) entry.getValue()).isEmpty()) {
+                    // 如果值是集合且为空，跳过拼接
+                    continue;
+                }
                 urlBuilder.append(entry.getKey()).append("=").append(entry.getValue()).append("&");
             }
             url = urlBuilder.toString();