测试分页查询出数据并分文件导出[java工程]

package cn.shiyanjun.test;

import java.util.ArrayList;
import java.util.List;

public class ExcelTest3 {
    List<Integer> rowData = getRowData(17);
    public static void main(String[] args) {
        ExcelTest3 excelTest3 = new ExcelTest3();
        excelTest3.exportExcelTest();    
    }

//    ==================================================================================================
    public void exportExcelTest() {
        int dataCount = rowData.size();//数据总数59
        int exNum = 6;//每个文件导出数
        int qryNum = 8;//已知查询数
        int qryCount = getCount(dataCount,qryNum);
        int end = 1;
        int fileNum = 0;
        List<Integer> list = new ArrayList<Integer>();
        
        for (int i = 0; i < qryCount; i++) {
            List<Integer> beanList = new ArrayList<Integer>();
            if(i != (qryCount - 1)){//如果不是最后一次查询
                beanList = queryForPage(i*qryNum, (i+1)*qryNum);//一次查8条
            }else{
                beanList = rowData.subList(i*qryNum, dataCount);
            }
            for (int j = 0; j < beanList.size(); j++) {//遍历这8条数据
                list.add(beanList.get(j));
                if(list.size() == exNum || (end ==qryCount && j == beanList.size() -1 )){
                    System.out.println((fileNum+1) + ".xls");//创建文件
                    System.out.println("导出"+list.size()+"条数据："+list);
                    list.clear();
                    fileNum++;
                }
            }
            end++;
        }
        

    }
    
    public List<Integer> queryForPage(int startIndex, int pageSize){
        List<Integer> pageData = rowData.subList(startIndex, pageSize);
        return pageData;
    }

    
    //根据count和rows来计算个数
    public int getCount(int count, int rows) {
        int num = 1;
        if(count >= rows){
            if(count % rows == 0){
                num = count/rows;
            }else{
                num = count/rows + 1;
            }
        }
        return num;
    }
    
    
    //创建一个包含若干2位随机整数的list集合
    public List<Integer> getRowData(int count){
        List<Integer> list = new ArrayList<Integer>();
        for(int i = 0; i < count; i++){
//            int num = (int) Math.round(Math.random()*90+10);
            list.add(i);
        }
        return list;
    }
    
    public void printExcelApi(List<Integer> exList, List<Integer> list){
        exList.addAll(list);
    }

}