JAVA分页

一个简单的java分页小模块

代码语言：javascript复制

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

代码语言：javascript复制

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！

java 分页 字符串

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