diff --git a/bocloud.cms.booter/src/main/java/com/bocloud/cms/booter/controller/ApiController.java b/bocloud.cms.booter/src/main/java/com/bocloud/cms/booter/controller/ApiController.java
index 313fc14..d7f9880 100644
--- a/bocloud.cms.booter/src/main/java/com/bocloud/cms/booter/controller/ApiController.java
+++ b/bocloud.cms.booter/src/main/java/com/bocloud/cms/booter/controller/ApiController.java
@@ -10,6 +10,7 @@ import jakarta.servlet.http.HttpServletRequest;
 import lombok.AllArgsConstructor;
 import lombok.Data;
 import lombok.extern.slf4j.Slf4j;
+import org.apache.commons.lang3.StringUtils;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.web.bind.annotation.GetMapping;
@@ -37,6 +38,9 @@ public class ApiController {
                               @RequestParam(value = "limit", required = false, defaultValue = "5") Integer limit,
                               @Value(Common.REQ_CONTEXT) RequestContext context,
                               HttpServletRequest request) {
+        if (StringUtils.isEmpty(type)) {
+            throw new IllegalArgumentException("type is null!");
+        }
         LineChartResult chart = switch (type) {
             case "hostCpu" -> this.topService.topOfHostCpu(vendorId, limit);
             case "hostMem" -> this.topService.topOfHostMem(vendorId, limit);