分页查询

ch-dao/src/main/java/com/wwdz/ch/db/dao/ItemManager.java

 package com.wwdz.ch.db.dao;
 
+import com.github.pagehelper.PageInfo;
 import com.wwdz.ch.db.domain.Item;
 import com.wwdz.ch.db.dto.request.CoinRequestDto;
 
@@ -12,6 +13,8 @@ public interface ItemManager {
 
     List<Item> findList(CoinRequestDto coinRequestDto);
 
+    PageInfo<Item> findByPage(CoinRequestDto coinRequestDto);
+
     Item findDetails(Long id);
 
     boolean setCoin(Item item);

ch-dao/src/main/java/com/wwdz/ch/db/dao/impl/ItemManagerImpl.java

 package com.wwdz.ch.db.dao.impl;
 
+import com.github.pagehelper.PageHelper;
+import com.github.pagehelper.PageInfo;
 import com.wwdz.ch.db.mapper.ItemMapper;
 import com.wwdz.ch.db.domain.Item;
 import com.wwdz.ch.db.domain.ItemExample;
@@ -45,6 +47,18 @@ public class ItemManagerImpl implements ItemManager {
         return itemMapper.selectByExample(example);
     }
 
+    @Override
+    public PageInfo<Item> findByPage(CoinRequestDto coinRequestDto) {
+        ItemExample example = new ItemExample();
+        ItemExample.Criteria criteria = example.createCriteria();
+        JdbcHelper.ifPresent(coinRequestDto.getId(), criteria :: andIdEqualTo);
+        JdbcHelper.ifPresent(coinRequestDto.getName(), criteria :: andNameLike);
+        JdbcHelper.ifPresent(coinRequestDto.getCid(), criteria :: andCidEqualTo);
+        PageHelper.startPage(coinRequestDto.getPage(), coinRequestDto.getLimit());
+        List<Item> list = itemMapper.selectByExample(example);
+        return new PageInfo<>(list);
+    }
+
     @Override
     public Item findDetails(Long id) {
         ItemExample example = new ItemExample();