BaseConditionVO.Java public class BaseConditionVO { public final static int PAGE_SHOW_COUNT = 50; private int pageNum = 1; private int numPerPage = 0; private int totalCount = 0; private String orderField; private String orderDirection; /** * @Fields ps : 对参数类型进行封装. */ private Map<String, Object> mo = new HashMap<String, Object>(); public int getPageNum() { return pageNum; } public void setPageNum(int pageNum) { this.pageNum = pageNum; } public int getNumPerPage() { return numPerPage > 0 ? numPerPage : PAGE_SHOW_COUNT; } public void setNumPerPage(int numPerPage) { this.numPerPage = numPerPage; } public String getOrderField() { return orderField; } public void setOrderField(String orderField) { this.orderField = orderField; } public String getOrderDirection() { return "desc".equals(orderDirection) ? "desc" : "asc"; } public void setOrderDirection(String orderDirection) { this.orderDirection = orderDirection; } public int getTotalCount() { return totalCount; } public void setTotalCount(int totalCount) { this.totalCount = totalCount; } public int getStartIndex() { int pageNum = this.getPageNum() > 0 ? this.getPageNum() - 1 : 0; return pageNum * this.getNumPerPage(); } public RowBounds createRowBounds() { RowBounds ro = new RowBounds(this.getStartIndex(), this.getNumPerPage()); return ro; } /** * @Title: addParams * @Description: 添加查询条件 * @param key * @param value */ public void addParams(String key, Object value) { this.getMo().put(key, value); } /** * @Title: getParams * @Description: 获取查询条件 * @param key * @return */ public Object getParams(String key) { return this.getMo().get(key); } /** * @return the mo */ public Map<String, Object> getMo() { return mo; } /** * @param mo * the mo to set */ public void setMo(Map<String, Object> mo) { this.mo = mo; } }
selec2的分页和Java端分页参数匹配
protected BaseConditionVO getBaseConditionVOForTable(HttpServletRequest req) { BaseConditionVO vo = new BaseConditionVO(); // 当前页 int currentPage = StrUtil.parseStringToInt(req.getParameter("page")); // 一页显示多少行 int sizes = StrUtil.parseStringToInt(req.getParameter("rows")); // 排序 String sortOrder = StrUtil.getString(req.getParameter("sord")); String sortCol = StrUtil.getString(req.getParameter("sidx")); vo.setNumPerPage(sizes); vo.setPageNum(currentPage); vo.setOrderField(sortCol); vo.setOrderDirection(sortOrder); return vo; }
Java端到select2端的数据封装
@XStreamAlias("pageGrid") @SuppressWarnings("rawtypes") public class PageGrid { private int page; // 总页数，和select2的processResults.pagination匹配 private int total; private int records; // 数据结果集，和select2的processResults.results匹配 private List data; public int getPage() { return this.page; } public void setPage(int page) { this.page = page; } public int getTotal() { return this.total; } public void setTotal(int total) { this.total = total; } public int getRecords() { return this.records; } public void setRecords(int records) { this.records = records; } public List getData() { return this.data; } public void setData(List data) { this.data = data; } }
MySQL获取的数据源和PageGrid进行转换匹配
protected PageGrid createPageGrid(List list, BaseConditionVO vo, int searchTotalCount) { PageGrid pageGrid = new PageGrid(); // 数据 pageGrid.setData(list); // 当前页 pageGrid.setPage(vo.getPageNum()); // 总数目 pageGrid.setRecords(list.size()); // 总页数 int total = 0; if (pageGrid.getRecords() != 0) { total = searchTotalCount % vo.getNumPerPage() == 0 ? searchTotalCount / vo.getNumPerPage() : searchTotalCount / vo.getNumPerPage() + 1; } pageGrid.setTotal(total); return pageGrid; }
mybatis的分页，超简单，只要设置了createRowBounds，mybatis就会自动为你分页，这个就厉害了。
List getPromoterList(BaseConditionVO vo, RowBounds createRowBounds);
sql语句，这里的关键点是必须要回传id（m.uid as id）到select2.