NumberServiceImpl.java
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package com.uccc.number.service.impl;
import com.uccc.number.domain.NumberQuery;
import com.uccc.number.domain.PageInfo;
import com.uccc.number.mapper.NumberMapper;
import com.uccc.number.service.NumberService;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import com.uccc.number.domain.Number;
import java.util.ArrayList;
import java.util.List;
@Service
public class NumberServiceImpl implements NumberService {
final private Logger logger = LoggerFactory.getLogger(getClass());
@Autowired
private NumberMapper numberMapper;
@Override
public PageInfo getNumbers(NumberQuery query) {
//类型转换
Integer currentPage = Integer.valueOf(query.getCurrentPage()== 0 ? 1 : query.getCurrentPage());
Integer pageSize = Integer.valueOf(query.getPageSize() == 0 ? 20 : query.getPageSize());
//查询count
int count = numberMapper.getNumbersCount();
if (currentPage > Math.ceil(count*1.0/pageSize)) {
currentPage = (int) Math.ceil(count*1.0/pageSize);
}
List<Number> list = new ArrayList<>();
if(count > 0){
list = numberMapper.getNumbers(currentPage, pageSize);
}
PageInfo pageInfo = new PageInfo(currentPage, pageSize, count, list);
return pageInfo;
}
}