PageHelper Sorting Results

1. PageHelper

PageHelper.startPage (pageNum, pageSize); PageHelper.orderBy ( "A B");
wherein A is the sort field name, B is a sort law, desc descending, asc ascending

Or in one step

String orderBy = "field name to sort the law";

PageHelper.startPage(pageNum, pageSize, orderBy)；
 

2. Use the sort Mybatis

XXXExample example = new XXXExample();

example.setOrderByClause ( "Field Name 1 ASC / DESC, field name 2 ASC / DESC, ...");

My example:

public class AdminBaseBusiness {

    protected void startPage() {
        Integer currentPage = ServletUtils.getIntParameter("current_page");
        Integer pageSize = ServletUtils.getIntParameter("page_size");
        IAssert.notNull(currentPage, "current_page is require");
        IAssert.notNull(pageSize, "page_size is require");
        //排序
        String orderByColumn = ServletUtils.getStrParameter("order_by_column");
        String sort = ServletUtils.getStrParameter("sort");//排序的方向 "desc" 或者 "asc".

        PageHelper.startPage(currentPage, pageSize, getOrderBy(orderByColumn, sort));
    }

    private String getOrderBy(String orderByColumn, String sort) {
        if (StringUtils.isEmpty(orderByColumn)) {
            return "";
        }
        if (StringUtils.isEmpty(sort)) sort = "desc";
        return orderByColumn + " " + sort;
    }
}