+号解析为空格修复

src/com/mes/ui/DataUtil.java

@@ -290,7 +290,9 @@ public class DataUtil {
         try {
             String mes_server_ip = MesClient.mes_server_ip;
             String url = "http://"+mes_server_ip+":8980/js/a/mes/mesLaser/getSteelSn";
-            String params = "__ajax=json&customerSn="+customerSn.trim();
+            // URL 编码客户码，避免 + 号被解析为空格
+            String encodedSn = customerSn.trim().replace("+", "%2B");
+            String params = "__ajax=json&customerSn="+encodedSn;
             System.out.println("[查询钢印码] params="+params);
             String result = doPost(url, params);
             System.out.println("[查询钢印码] result="+result);