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126 lines (110 loc) · 2.7 KB
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package common.utils;
import common.vo.Paged;
import java.util.List;
/**
* create by mulin on 2018/08/23
*/
public class PageUtil {
/**
* 获取当前页页码
*/
public static int getCurPageNO(Paged page) {
return page.getPageNo();
}
/**
* 获取上一页页码
*/
public static int getPrePageNo(Paged page) {
return page.getPrevPageNo();
}
/**
* 获取下一页页码
*/
public static int getNextPageNo(Paged page) {
return page.getNextPageNo();
}
/**
* 跳转到下一页
*/
public static Paged nextPage(Paged page) {
if (page.haveNextPage()) {
page.setPageNo(page.getPageNo()+1);
}
return page;
}
/**
* 跳转到上一页
*/
public static Paged prePage(Paged page) {
if (page.havePrevPage()) {
page.setPageNo(page.getPageNo()-1);
}
return page;
}
/**
* 跳转到首页
*/
public static Paged firstPage(Paged page) {
page.setPageNo(1);
return page;
}
/**
* 跳转到页尾
*/
public static Paged endPage(Paged page) {
page.setPageNo(page.getTotalPages());
return page;
}
/**
* 获取当前页数据
*/
public static List getCurrentPageData(Paged page) {
if ((page.getPageNo()-1)*page.getPageSize() > page.getData().size()) {
return null;
}
int startNum = page.getPageSize()*(page.getPageNo()-1);
int endNum = page.getPageSize()*page.getPageNo();
endNum = endNum < page.getTotalRows() ? endNum : page.getTotalRows();
return page.getData().subList(startNum, endNum);
}
/**
* 获取上一页数据
*/
public static List getPrePageData(Paged page) {
List list = null;
if (page.havePrevPage()) {
list = StepPrePageAndGetData(page);
nextPage(page);
}
return list;
}
/**
* 跳转到上一页并打印数据
*/
public static List StepPrePageAndGetData(Paged page) {
return getCurrentPageData(prePage(page));
}
/**
* 获取下一页数据
*/
public static List getNextPageData(Paged page) {
List list = null;
if (page.haveNextPage()) {
list = StepNextPageAndGetData(page);
prePage(page);
}
return list;
}
/**
* 跳转到下一页并打印数据
*/
public static List StepNextPageAndGetData(Paged page) {
return getCurrentPageData(nextPage(page));
}
/**
* 打印Paged信息
*/
public static String pageInfo(Paged page) {
return page.toString();
}
}