List如何进行分页

素颜马尾好姑娘i 2024-03-27 13:17 104阅读 0赞

这里写了一个方法，把list，pageSize，pageNum穿过来，

list是我们查出来的所有数据

pageList是分页后的数据

List<EsArticleDto> list = articleService.findByLangAndCreateDateIntBetween(article.getLang(), Integer.parseInt(this.startTime), Integer.parseInt(this.endTime), pageable);
    PageEs pageEs = page(list, pageSize, pageNum);
    List pageList = list.subList(pageEs.getFromIndex(), pageEs.getToIndex());

public PageEs page(List<EsArticleDto> list, Integer pageSize, Integer pageNum) {
    //开启分页
        Integer count = list.size(); //记录总数
        Integer pageCount = 0; //页数
        if (count % pageSize == 0) {
            pageCount = count / pageSize;
        } else {
            pageCount = count / pageSize + 1;
        }
    
    int fromIndex = 0; //开始索引
        int toIndex = 0; //结束索引
    
        if (pageNum > pageCount) {
            pageNum = pageCount;
        }
    if (!pageNum.equals(pageCount)) {
            fromIndex = (pageNum - 1) * pageSize;
            toIndex = fromIndex + pageSize;
        } else {
            fromIndex = (pageNum - 1) * pageSize;
            toIndex = count;
        }
        PageEs pageEs = new PageEs();
        pageEs.setPageNum(pageNum);
        pageEs.setPageSize(pageSize);
        pageEs.setCount(count);
        pageEs.setPageCount(pageCount);
        pageEs.setToIndex(toIndex);
        pageEs.setFromIndex(fromIndex);
        return pageEs;
    }

public PageEs page(List<EsArticleDto> list, Integer pageSize, Integer pageNum) \{

//开启分页

Integer count = list.size(); //记录总数

Integer pageCount = 0; //页数

if (count % pageSize == 0) \{

pageCount = count / pageSize;

\} else \{

pageCount = count / pageSize + 1;

int fromIndex = 0; //开始索引

int toIndex = 0; //结束索引

if (pageNum > pageCount) \{

pageNum = pageCount;