对博客进行了优化置顶，收藏，热度等操作

src/main/resources/templates/common/header.html

@@ -37,6 +37,24 @@
                 </li>
             </ul>
 
+            <!--如果未登录-->
+            <div>
+                <form th:action="@{/search}" method="post">
+                    <ul class="navbar-nav mr-auto">
+                        <li>
+                            <input name="findWhat" type="text" placeholder="大佬想找什么呢？"/>
+                        </li>
+                        <li>
+                            <input type="submit" class="btn btn-sm btn-primary mr-2" value="全站搜索">
+                                <svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" class="bi bi-search" viewBox="0 0 16 16">
+                                    <path d="M11.742 10.344a6.5 6.5 0 1 0-1.397 1.398h-.001c.03.04.062.078.098.115l3.85 3.85a1 1 0 0 0 1.415-1.414l-3.85-3.85a1.007 1.007 0 0 0-.115-.1zM12 6.5a5.5 5.5 0 1 1-11 0 5.5 5.5 0 0 1 11 0z"/>
+                                </svg>
+                            </input>
+                        </li>
+                    </ul>
+                </form>
+            </div>
+
             <!--如果未登录-->
             <div sec:authorize="!isAuthenticated()">
                 <a class="btn btn-sm btn-primary" th:href="@{/toLogin}" role="button">