Add TagController for portal api

src/main/java/cc/ryanc/halo/web/controller/admin/api/CategoryController.java

@@ -35,7 +35,7 @@ public class CategoryController {
         this.postCategoryService = postCategoryService;
     }
 
-    @GetMapping("tree")
+    @GetMapping("tree_view")
     @ApiOperation("List as category tree")
     public List<CategoryVO> listAsTree(@SortDefault(sort = "name", direction = ASC) Sort sort) {
         return categoryService.listAsTree(sort);

src/main/java/cc/ryanc/halo/web/controller/portal/api/TagController.java

@@ -0,0 +1,44 @@
+package cc.ryanc.halo.web.controller.portal.api;
+
+import cc.ryanc.halo.model.dto.TagOutputDTO;
+import cc.ryanc.halo.service.PostTagService;
+import cc.ryanc.halo.service.TagService;
+import io.swagger.annotations.ApiOperation;
+import org.springframework.data.domain.Sort;
+import org.springframework.data.web.SortDefault;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.util.List;
+
+/**
+ * Portal tag controller.
+ *
+ * @author johnniang
+ * @date 4/2/19
+ */
+@RestController
+@RequestMapping("/api/tags")
+public class TagController {
+
+    private final TagService tagService;
+
+    private final PostTagService postTagService;
+
+    public TagController(TagService tagService, PostTagService postTagService) {
+        this.tagService = tagService;
+        this.postTagService = postTagService;
+    }
+
+    @GetMapping
+    @ApiOperation("Lists tags")
+    public List<? extends TagOutputDTO> listTags(@SortDefault(sort = "updateTime", direction = Sort.Direction.DESC) Sort sort,
+                                                 @RequestParam(name = "more", required = false, defaultValue = "false") Boolean more) {
+        if (more) {
+            return postTagService.listTagWithCountDtos(sort);
+        }
+        return tagService.convertTo(tagService.listAll(sort));
+    }
+}