MVC分页问题
各位哥哥姐姐
请教下高效简单的分页java源代码
感激不尽！！！
public class PageBean {
int currentPage=1;//当前页数
public int totalPages=0;//总页数
int pageRecorders=5;//每页显示数
int totalRows=0;//总数据数
int pageStartRow=0;//每页的起始数
int pageEndRow;//每页的终止数
boolean hasNextPage=false;//是否有下一页
boolean hasPreviousPage=false;//是否有前一页
ArrayList arrayList;
Iterator it;
public PageBean(ArrayList arrayList) {
this.arrayList=arrayList;
totalRows=arrayList.size();
it=arrayList.iterator();
hasPreviousPage=false;
currentPage=1;
if((totalRows%pageRecorders)==0) {
totalPages=totalRows/pageRecorders;
}
else {
totalPages=totalRows/pageRecorders+1;
}
if(currentPage>=totalPages) {
hasNextPage=false;
}
else {
hasNextPage=true;
}
if(totalRows<pageRecorders) {
this.pageStartRow=0;
this.pageEndRow=totalRows;
}
else {
this.pageStartRow=0;
this.pageEndRow=pageRecorders;
}
}
public void setCurrentPage(int currentPage) {
this.currentPage=currentPage;
}
public void setPageRecorders(int pageRecorders) {
this.pageRecorders=pageRecorders;
}
public void setHasNextPage(boolean hasNextPage) {
this.hasNextPage=hasNextPage;
}
public void setHasPreviosPage(boolean hasPreviosPage) {
this.hasPreviousPage=hasPreviousPage;
}
public String getCurrentPage() {
return this.toString(currentPage);
}
public String getTotalPages() {
return this.toString(totalPages);
}
public String getTotalRow() {
return this.toString(totalRows);
}
public int getPageRecorders() {
return pageRecorders;
}
public int getPageEndRow() {
return pageEndRow;
}
public int getPageStartRow() {
return pageStartRow;
}
public boolean isHasNextPage() {
return hasNextPage;
}
public boolean isHasPreviousPage() {
return hasPreviousPage;
}
public Book[] getNextPage() {
currentPage=currentPage+1;
if((currentPage-1)>0) {
hasPreviousPage=true;
}
else {
hasPreviousPage=false;
}
if(currentPage>=totalPages) {
hasNextPage=false;
}
else {
hasNextPage=true;
}
Book[] books=getBooks();
return books;
}
public Book[] getPreviousPage() {
currentPage=currentPage-1;
if(currentPage==0) {
currentPage=1;
}
if(currentPage>=totalPages) {
hasNextPage=false;
}
else {
hasNextPage=true;
}
if((currentPage-1)>0) {
hasPreviousPage=true;
}
else {
hasPreviousPage=false;
}
Book[] books=getBooks();
return books;
}
public Book[] getBooks() {
if(currentPage*pageRecorders<totalRows) {
pageEndRow=currentPage*pageRecorders;
pageStartRow=pageEndRow-pageRecorders;
}
else {
pageEndRow=totalRows;
pageStartRow=pageRecorders*(totalPages-1);
}
Book[] books=new Book[pageEndRow-pageStartRow+1];
int j=0;
for(int i=pageStartRow;i<pageEndRow;i++) {
Book book=(Book)arrayList.get(i);
books[j++]=book;
}
return books;
}
public String toString(int temp) {
String str=Integer.toString(temp);
return str;
}
}
其中ArrayList是从数据库中读出来，返回的一个想对应的集合对象！主要部分可以给你点启示～～～～
