feat:增加博客分类模块

lib/apis/blog.dart

@@ -12,20 +12,41 @@ Future<PageResult<Blog>> queryBlogByPageApi(int currentPage, int pageSize) {
 }
 
 Future<List<Blog>> queryBlogByConditionApi(
-  String category,
-  String title,
-  int year,
+  String? category,
+  String? title,
+  int? year,
 ) {
+  final Map<String, dynamic> queryParams = {};
+
+  if (category != null && category.isNotEmpty) {
+    queryParams['category'] = category;
+  }
+  if (title != null && title.isNotEmpty) {
+    queryParams['title'] = title;
+  }
+  if (year != null && year > 0) {
+    queryParams['year'] = year;
+  }
+
   return HttpUtil().get<List<Blog>>(
     "/blog/condition",
-    queryParameters: {"category": category, "title": title, "year": year},
+    queryParameters: queryParams,
     converter: (data) => convertListResponse<Blog>(data, Blog.fromJson),
   );
 }
 
 Future<Blog> queryBlogByIdApi(int id) {
   return HttpUtil().get<Blog>(
-    "blog/$id/content",
+    "/blog/$id/content",
     converter: (data) => Blog.fromJson(data),
   );
 }
+
+Future<List<BlogCategory>> queryBlogCategoryApi() {
+  return HttpUtil().get<List<BlogCategory>>(
+    "/blog/category",
+    converter:
+        (data) =>
+            convertListResponse<BlogCategory>(data, BlogCategory.fromJson),
+  );
+}