分类分页查询

sky-server/src/main/java/com/sky/controller/category/CategoryController.java

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+package com.sky.controller.category;
+
+import com.sky.dto.CategoryPageQueryDTO;
+import com.sky.result.PageResult;
+import com.sky.result.Result;
+import com.sky.service.CategoryService;
+import io.swagger.annotations.Api;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiOperation;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+@Api(tags = "分类相关接口")
+@RequestMapping("/admin/category")
+@Slf4j
+public class CategoryController {
+
+    @Autowired
+    private CategoryService categoryService;
+
+    /**
+     * 分类分页查询
+     * @param categoryPageQueryDTO
+     * @return
+     */
+    @GetMapping("/page")
+    @ApiOperation("分类分页查询")
+    public Result<PageResult> page(CategoryPageQueryDTO categoryPageQueryDTO){
+        log.info("分类分页查询: {}",categoryPageQueryDTO);
+        PageResult pageResult = categoryService.pageQuery(categoryPageQueryDTO);
+        return Result.success(pageResult);
+    }
+
+
+}

sky-server/src/main/java/com/sky/mapper/CategoryMapper.java

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+package com.sky.mapper;
+
+import com.github.pagehelper.Page;
+import com.sky.dto.CategoryPageQueryDTO;
+import com.sky.entity.Category;
+import org.apache.ibatis.annotations.Mapper;
+
+@Mapper
+public interface CategoryMapper {
+
+    Page<Category> pageQuery(CategoryPageQueryDTO categoryPageQueryDTO);
+}

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

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+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

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+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);
+    }
+}

sky-server/src/main/resources/mapper/CategoryMapper.xml

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+<?xml version="1.0" encoding="UTF-8" ?>
+<!DOCTYPE mapper
+        PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
+        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
+<mapper namespace="com.sky.mapper.CategoryMapper">
+
+    <select id="pageQuery" resultType="com.sky.entity.Category">
+        select * from category
+        <where>
+            <if test="name != null and name != ''">
+                and name like concat('%',#{name},'%')
+            </if>
+            <if test="type != null and type != ''">
+                and type = #{type}
+            </if>
+        </where>
+    </select>
+</mapper>