分类分页查询

sky-server/src/main/java/com/sky/service/CategoryService.java

@@ -0,0 +1,15 @@
+package com.sky.service;
+
+import com.sky.dto.CategoryPageQueryDTO;
+import com.sky.result.PageResult;
+import org.springframework.stereotype.Service;
+
+@Service
+public interface CategoryService {
+    /**
+     * 分类分页查询
+     * @param categoryPageQueryDTO
+     * @return
+     */
+    PageResult pageQuery(CategoryPageQueryDTO categoryPageQueryDTO);
+}

sky-server/src/main/java/com/sky/service/impl/CategoryServiceImpl.java

@@ -0,0 +1,38 @@
+package com.sky.service.impl;
+
+import com.github.pagehelper.Page;
+import com.github.pagehelper.PageHelper;
+import com.sky.dto.CategoryPageQueryDTO;
+import com.sky.entity.Category;
+import com.sky.mapper.CategoryMapper;
+import com.sky.result.PageResult;
+import com.sky.service.CategoryService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+import java.util.List;
+
+@Service
+public class CategoryServiceImpl implements CategoryService {
+
+    @Autowired
+    private CategoryMapper categoryMapper;
+
+    /**
+     * 分类分页查询
+     * @param categoryPageQueryDTO
+     * @return
+     */
+    @Override
+    public PageResult pageQuery(CategoryPageQueryDTO categoryPageQueryDTO) {
+        //设置分页
+        PageHelper.startPage(categoryPageQueryDTO.getPage(), categoryPageQueryDTO.getPageSize());
+
+        Page<Category> page = categoryMapper.pageQuery(categoryPageQueryDTO);
+
+        long total = page.getTotal();
+        List<Category> result = page.getResult();
+
+        return new PageResult(total,result);
+    }
+}