分页列表查询通用类

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于 2019-07-30 22:02:13 发布

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分类专栏： Java实践

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@Data
public class PageResult <T> {
    private Integer totalPage;
    private Integer totalSize;
    private Integer pageSize;
    private Integer currentPage;
    private Integer offset;
    private List<T> results;

    public void init(Integer totalSize, Integer currentPage, Integer pageSize){
        this.totalSize = totalSize;
        this.currentPage = (currentPage != null && currentPage > 1) ? currentPage : 1;
        this.pageSize = (pageSize != null && pageSize > 0) ? pageSize : 20;
        this.totalPage = (totalSize+this.pageSize-1)/this.pageSize;
        if(this.currentPage > this.totalPage &&  this.totalPage > 0){
            this.currentPage = this.totalPage;
        }
        this.offset = (this.currentPage - 1) * this.pageSize;
    }
}