一个简单的java分页小模块
public class Page { public static void main(String[] args) { Page pg=new Page(); String str=pg.pagestr("http://www.abc.com?",195,11,10,8); System.out.print(str); } //url连接,countdatas表数据总行数,currentpage第几页(0是第一页),everpage每页多少行,beforlaterln前后长度 public String pagestr(String url,int countdatas,int currentpage,int everpage,int beforlaterln) { String page= ""; int intpart = countdatas/everpage;//整数 int remainderpart = countdatas%everpage;//余数 int countpage = intpart;//取整数 currentpage = currentpage<0 ? 0:currentpage; if(remainderpart==0){//余数判断 currentpage=currentpage>countpage-1?countpage-1:currentpage; int pp=currentpage+1; String strbe=""; int pagebefore=pp-beforlaterln-1; for(int i=pp; i > pagebefore; i--){ if(i>0 && i<pp){ strbe="<a class='num' href='"+url+"&p="+(i-1)+"'>"+i+"</a>"+strbe; } } if(pp<=1){strbe="";}else{strbe="<a class='num' href='"+url+"&p=0'>首页</a>"+"<a class='num' href='"+url+"&p="+(pp-2)+"'>上一页</a>"+strbe;} String strmid="<span class='current'>"+pp+"</span>"; String strlater=""; int pagelater=pp+beforlaterln; for(int i=pp; i < pagelater; i++){ if(i<countpage){ strlater+="<a class='num' href='"+url+"&p="+(i)+"'>"+(i+1)+"</a>"; } } if(pp>=countpage){}else{strlater+="<a class='num' href='"+url+"&p="+pp+"'>下一页</a>"+"<a class='num' href='"+url+"&p="+(countpage-1)+"'>尾页</a>";} page=strbe+strmid+strlater; }else { countpage+=1;//总页数 currentpage=currentpage>countpage-1?countpage-1:currentpage; int pp=currentpage+1; String strbe=""; int pagebefore=pp-beforlaterln-1; for(int i=pp; i > pagebefore; i--){ if(i>0 && i<pp){ strbe="<a class='num' href='"+url+"&p="+(i-1)+"'>"+i+"</a>"+strbe; } } if(pp<=1){strbe="";}else{strbe="<a class='num' href='"+url+"&p=0'>首页</a>"+"<a class='num' href='"+url+"&p="+(pp-2)+"'>上一页</a>"+strbe;} String strmid="<span class='current'>"+pp+"</span>"; String strlater=""; int pagelater=pp+beforlaterln; for(int i=pp; i < pagelater; i++){ if(i<countpage){ strlater+="<a class='num' href='"+url+"&p="+(i)+"'>"+(i+1)+"</a>"; } } if(pp>=countpage){}else{strlater+="<a class='num' href='"+url+"&p="+pp+"'>下一页</a>"+"<a class='num' href='"+url+"&p="+(countpage-1)+"'>尾页</a>";} page=strbe+strmid+strlater; } return "共"+countpage+"页"+page; } }
运行后得到以下字符串
共20页<a class='num' href='http://www.abc.com?&p=0'>首页</a> <a class='num' href='http://www.abc.com?&p=10'>上一页</a> <a class='num' href='http://www.abc.com?&p=3'>4</a> <a class='num' href='http://www.abc.com?&p=4'>5</a> <a class='num' href='http://www.abc.com?&p=5'>6</a> <a class='num' href='http://www.abc.com?&p=6'>7</a> <a class='num' href='http://www.abc.com?&p=7'>8</a> <a class='num' href='http://www.abc.com?&p=8'>9</a> <a class='num' href='http://www.abc.com?&p=9'>10</a> <a class='num' href='http://www.abc.com?&p=10'>11</a> <span class='current'>12</span> <a class='num' href='http://www.abc.com?&p=12'>13</a> <a class='num' href='http://www.abc.com?&p=13'>14</a> <a class='num' href='http://www.abc.com?&p=14'>15</a> <a class='num' href='http://www.abc.com?&p=15'>16</a> <a class='num' href='http://www.abc.com?&p=16'>17</a> <a class='num' href='http://www.abc.com?&p=17'>18</a> <a class='num' href='http://www.abc.com?&p=18'>19</a> <a class='num' href='http://www.abc.com?&p=19'>20</a> <a class='num' href='http://www.abc.com?&p=12'>下一页</a> <a class='num' href='http://www.abc.com?&p=19'>尾页</a>
希望对大家有帮助,谢谢!
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