<!--pagehelper -->
<dependency>
<groupId>com.github.pagehelper</groupId>
<artifactId>pagehelper-spring-boot-starter</artifactId>
<version>1.2.12</version>
</dependency>
# 分页插件配置
pagehelper:
helperDialect: mysql
supportMethodsArguments: true
/**
* page: 第几页
* pageSize: 每页显示条数
*/
PageHelper.startPage(page, pageSize);
/**
* 根据商品id查询商品的评价（分页）
* @param itemId
* @param level
* @return
*/
public PagedGridResult queryPagedComments(String itemId, Integer level,
Integer page, Integer pageSize);
private PagedGridResult setterPagedGrid(List<?> list, Integer page) {
PageInfo<?> pageList = new PageInfo<>(list);
PagedGridResult grid = new PagedGridResult();
grid.setPage(page);
grid.setRows(list);
grid.setTotal(pageList.getPages());
grid.setRecords(pageList.getTotal());
return grid;
}
package com.leon.utils;
import java.util.List;
/**
*
* @Title: PagedGridResult.java
* @Package com.leon.utils
* @Description: 用来返回分页Grid的数据格式
*/
public class PagedGridResult {
private int page; // 当前页数
private int total; // 总页数
private long records; // 总记录数
private List<?> rows; // 每行显示的内容
public int getPage() {
return page;
}
public void setPage(int page) {
this.page = page;
}
public int getTotal() {
return total;
}
public void setTotal(int total) {
this.total = total;
}
public long getRecords() {
return records;
}
public void setRecords(long records) {
this.records = records;
}
public List<?> getRows() {
return rows;
}
public void setRows(List<?> rows) {
this.rows = rows;
}
}
@Transactional(propagation = Propagation.SUPPORTS)
@Override
public PagedGridResult queryPagedComments(String itemId,
Integer level,
Integer page,
Integer pageSize) {
Map<String, Object> map = new HashMap<>();
map.put("itemId", itemId);
map.put("level", level);
// mybatis-pagehelper
/**
* page: 第几页
* pageSize: 每页显示条数
*/
PageHelper.startPage(page, pageSize);
List<ItemCommentVO> list = itemsMapperCustom.queryItemComments(map);
for (ItemCommentVO vo : list) {
vo.setNickname(DesensitizationUtil.commonDisplay(vo.getNickname()));
}
return setterPagedGrid(list, page);
}
@ApiOperation(value = "查询商品评论", notes = "查询商品评论", httpMethod = "GET")
@GetMapping("/comments")
public JSONResult comments(
@ApiParam(name = "itemId", value = "商品id", required = true)
@RequestParam String itemId,
@ApiParam(name = "level", value = "评价等级", required = false)
@RequestParam Integer level,
@ApiParam(name = "page", value = "查询下一页的第几页", required = false)
@RequestParam Integer page,
@ApiParam(name = "pageSize", value = "分页的每一页显示的条数", required = false)
@RequestParam Integer pageSize) {
if (StringUtils.isBlank(itemId)) {
return JSONResult.errorMsg(null);
}
if (page == null) {
page = 1;
}
if (pageSize == null) {
pageSize = COMMON_PAGE_SIZE;
}
PagedGridResult grid = itemService.queryPagedComments(itemId,
level,
page,
pageSize);
return JSONResult.ok(grid);
}
@Controller
public class BaseController {
public static final Integer COMMON_PAGE_SIZE = 10;
public static final Integer PAGE_SIZE = 20;
}
public class ItemsController extends BaseController {
@ApiOperation(value = "查询商品评论", notes = "查询商品评论", httpMethod = "GET")
@GetMapping("/comments")
public JSONResult comments(
@ApiParam(name = "itemId", value = "商品id", required = true)
@RequestParam String itemId,
@ApiParam(name = "level", value = "评价等级", required = false)
@RequestParam Integer level,
@ApiParam(name = "page", value = "查询下一页的第几页", required = false)
@RequestParam Integer page,
@ApiParam(name = "pageSize", value = "分页的每一页显示的条数", required = false)
@RequestParam Integer pageSize) {
if (StringUtils.isBlank(itemId)) {
return JSONResult.errorMsg(null);
}
if (page == null) {
page = 1;
}
if (pageSize == null) {
pageSize = COMMON_PAGE_SIZE;
}
PagedGridResult grid = itemService.queryPagedComments(itemId,
level,
page,
pageSize);
return JSONResult.ok(grid);
}
