issue #36, searchByTime maxNums 改为配置.

src/main/java/com/xuxd/kafka/console/beans/QueryMessage.java

@@ -33,4 +33,6 @@ public class QueryMessage {
     private String headerKey;
 
     private String headerValue;
+
+    private int filterNumber;
 }

src/main/java/com/xuxd/kafka/console/beans/dto/QueryMessageDTO.java

@@ -37,6 +37,8 @@ public class QueryMessageDTO {
 
     private String headerValue;
 
+    private int filterNumber;
+
     public QueryMessage toQueryMessage() {
         QueryMessage queryMessage = new QueryMessage();
         queryMessage.setTopic(topic);
@@ -69,6 +71,7 @@ public class QueryMessageDTO {
         if (StringUtils.isNotBlank(headerValue)) {
             queryMessage.setHeaderValue(headerValue.trim());
         }
+        queryMessage.setFilterNumber(filterNumber);
 
         return queryMessage;
     }

src/main/java/com/xuxd/kafka/console/service/impl/MessageServiceImpl.java

@@ -70,7 +70,7 @@ public class MessageServiceImpl implements MessageService, ApplicationContextAwa
 
     @Override
     public ResponseData searchByTime(QueryMessage queryMessage) {
-        int maxNums = 5000;
+        int maxNums = queryMessage.getFilterNumber() <= 0 ? 5000 : queryMessage.getFilterNumber();
 
         Object searchContent = null;
         String headerKey = null;

ui/src/views/message/SearchByTime.vue

@@ -60,6 +60,33 @@
             </a-col>
           </a-row>
           <hr class="hr" />
+          <a-row :gutter="24">
+            <a-col :span="24">
+              <a-form-item label="最大检索数">
+                <a-input-number
+                  v-decorator="[
+                    'filterNumber',
+                    {
+                      initialValue: 5000,
+                      rules: [
+                        {
+                          required: true,
+                          message: '输入消息数!',
+                        },
+                      ],
+                    },
+                  ]"
+                  :min="1"
+                  :max="100000"
+                />
+                <span
+                  >条
+                  注意：这里允许最多检索10万条，但是不建议将该值设置过大，这意味着一次查询要在内存里缓存这么多的数据，可能导致内存溢出；并且更大的消息量会导致更长的检索时间</span
+                >
+              </a-form-item>
+            </a-col>
+          </a-row>
+          <hr class="hr" />
           <a-row :gutter="24">
             <a-col :span="5">
               <a-form-item label="消息过滤">