Ajax读取txt并对txt内容进行分页显示功能

下文给大家分享了ajax读取txt并对txt内容进行分页显示的核心代码，废话不多说了，直接贴代码了。

function transferstring(content)
{
var string = content;
try{
string=string.replace(/\r\n/g,"<br>")
string=string.replace(/\n/g,"<br>");
string=string.replace(/[ ]/g," ")
string=string.replace(/\ +/g," ")
}catch(e) {
alert(e.message);
}
return string;
}
var pageindex = 1;
var id = $("#aid").val();
var url = $('#urlarticlecontent').val();
var txt = '';
var pagesize = @(configurationmanager.appsettings["articlepagesize"]);
var page=5;
var pagecount = 0;
$(function() {
if(url!="")
{
txt = ($.ajax({ url: url, async: false })).responsetext;
if (txt.indexof('http://www.w3.org/1999/xhtml')==-1) {
pagecount = math.ceil(txt.length / pagesize);
$("#pagecount").html(pagecount);
$('#word').html(transferstring(txt.substring(0, pagesize)));
$('#demo').pagination({
datasource: function(done){
var result = [];
for (var i = 1; i < pagecount; i++) {
result.push(i);
}
done(result);
},
pagecount:pagecount,
pagesize: 5,
showgoinput: true,
showgobutton: true,
callback: function(data, pagination) {
// template method of yourself
var html = template(data);
datacontainer.html(html);
}
})
} else {
txt = '';
}
}
})
function gohead() {
gopage(1);
}
function nextclick() {
if (pageindex < pagecount) {
pageindex = pageindex + 1;
} else {
pageindex = pagecount;
}
gopage(pageindex);
$("#pagecurrent").html(pageindex);
}
function backclick() {
if (pageindex > 1) {
pageindex = pageindex - 1;
gopage(pageindex);
$("#pagecurrent").html(pageindex);
}
}
function gopagenew() {
var page=$("#pagego").val();
gopage(page);
opts.current=page;
}
function gopage(pageindex) {
if(pageindex==0) {
pageindexstr = $('#gopage').val();
if (pageindexstr==undefined) {
return false;
}
pageindexstr = pageindexstr.trim();
var pageindex = parseint(pageindexstr);
}
$('#page'+pageindex).siblings().removeclass('active');
$('#page'+pageindex).addclass('active');
if (pageindex==1) {
if(!$('#backclick').hasclass('disabled')) {
$('#backclick').addclass('disabled');
}
} else {
$('#backclick').removeclass('disabled');
}
if (pageindex == pagecount) {
if(!$('#nextclick').hasclass('disabled')) {
$('#nextclick').addclass('disabled');
}
} else {
$('#nextclick').removeclass('disabled');
}
var pagetxt = txt.substring((pageindex - 1) * pagesize, pageindex * pagesize);
$('#word').html(transferstring(pagetxt));
$('html, body').animate({
'scrolltop': 0
}, 0);
$("#pagecurrent").html(pageindex);
}
function pagego(){ if($('.jump-ipt').val()!=''){
gopage($('.jump-ipt').val())
}
}
@{
if (null != viewbag.ariticle)
{
datarow dr = viewbag.ariticle;
if (null != dr)
{
viewbag.title = dr["title"];
<div class="container">
<div class="row">
<div class="col-xs-12">
<div class="breadcrumb_block">
<span class="tit"><a href="/web/sciencefiction/index">科普ip</a> ></span>
<ol class="breadcrumb">
<li class="active">@dr["title"]</li>
<li class="active">在线试读</li>
</ol>
<div class="clear"></div>
</div>
</div>
<div class="col-sm-8">
<input type="hidden" name="aid" id="aid" value="@request["id"]" />
<div class="read_book">
<h3 class="read_tit">@dr["title"]</h3>
<div class="author">
<span class="ml30"><em id="pagecurrent">1</em>/<em id="pagecount">0</em></span>
</div>
<input type="hidden" value="@dr["filepath"]" id="urlarticlecontent">
<div class="word" id="word">
<nav class="page-my">
<ul class="pagination pull-right fs14" id="demo"></ul>
<div class="clear"></div>
</nav>
<!--底部翻页-->
</div>
<div class="col-sm-3">
<input type="hidden" name="pagecount" id="pagecount" value="@viewbag.pagecount" />
<!--阅读控制-->
<div class="read_control">
<a href="javascript:;" onclick="backclick()"><span class="icon icon01"></span><em>上一页</em></a>
<a href="javascript:;" onclick="nextclick()"><span class="icon icon02"></span><em>下一页</em></a>
<a href="javascript:;" onclick="gohead()"><span class="icon icon03"></span><em>回首页</em></a>
</div>
</div>
</div>
</div>
}
}
}

txt文件上传时需要做一些处理，否则只能显示utf8格式的txt

/// <summary>
/// 文件上传
/// </summary>
/// <returns></returns>
public jsonresult uploadfiles()
{

httppostedfilebase postfile = httpcontext.request.files["filesave"];
if (postfile != null)
{
string filename = path.getfilename(postfile.filename);
string fileext = path.getextension(filename.tolower());
string filesize = postfile.contentlength.tostring();
long filenametem = common.generatelongid();
string spath = string.format("/data/material/{0}_{1}.txt", filenametem.tostring(), filename.replace(".txt", ""));//guid.newguid().tostring().replace("-", "")
string viewurl = string.empty;
string g = guid.newguid().tostring();
if (!directory.exists(server.mappath("~") + "/data/material"))
directory.createdirectory(server.mappath("~") + "/data/material");
string p = server.mappath(spath);
postfile.saveas(p);

if (system.io.file.exists(p))
{
streamreader sr = new streamreader(p, system.text.encoding.default);
string input = sr.readtoend();
sr.close();

streamwriter sw = new streamwriter(p, false, system.text.encoding.utf8);
sw.writeline(input);
sw.close();
}
return json(new { filepath = spath, filename = filename, viewurl = viewurl, filesize = filesize });
}
else
{
return json(new { filepath = "" });
}
}

另外页面首页引入js

<script src="~/scripts/web/jquery.pagination.js"></script>
<link href="~/content/jquery.pagination.css" rel="stylesheet" />
/**
* pagination分页插件
* @version 1.1.2
* @author mss
* @url http://maxiaoxiang.com/plugin/pagination.html
* @e-mail [e-mail]
*
* @调用方法
* $(selector).pagination();
* 
* @更新日志
* 2016-07-25：修复click重复事件
*/
; (function ($, window, document, undefined) {
//配置参数
var defaults = {
totaldata: 0, //数据总条数
showdata: 0, //每页显示的条数
pagecount: 9, //总页数,默认为9
current: 1, //当前第几页
prevcls: 'prev', //上一页class
nextcls: 'next', //下一页class
prevcontent: '上一页', //上一页内容
nextcontent: '下一页', //下一页内容
activecls: 'active', //当前页选中状态
coping: false, //首页和尾页
homepage: '', //首页节点内容
endpage: '', //尾页节点内容
count: 5, //当前页前后分页个数
jump: true, //跳转到指定页数
jumpiptcls: 'jump-ipt', //文本框内容
jumpbtncls: 'jump-btn', //跳转按钮
jumpbtn: '跳转', //跳转按钮文本
callback: function () { 
} //回调
};
var pagination = function (element, options) {
//全局变量
var opts = options,//配置
current,//当前页
$document = $(document),
$obj = $(element);//容器
/**
* 设置总页数
* @param int page 页码
* @return opts.pagecount 总页数配置
*/
this.settotalpage = function (page) {
return opts.pagecount = page;
};
/**
* 获取总页数
* @return int p 总页数
*/
this.gettotalpage = function () {
var p = opts.totaldata || opts.showdata ? math.ceil(parseint(opts.totaldata) / opts.showdata) : opts.pagecount;
return p;
};
//获取当前页
this.getcurrent = function () {
return current;
};
/**
* 填充数据
* @param int index 页码
*/
this.filling = function (index) {
var html = '';
current = index || opts.current;//当前页码
var pagecount = this.gettotalpage();
if (current > 1) {//上一页
html += '<li onclick=gopage(' + (current - 1) + ')><a href="javascript:;" class="' + opts.prevcls + '">' + opts.prevcontent + '</a></li>';
} else {
$obj.find('.' + opts.prevcls) && $obj.find('.' + opts.prevcls).remove();
}
if (current >= opts.count * 2 && current != 1 && pagecount != opts.count) {
var home = opts.coping && opts.homepage ? opts.homepage : '1';
html += opts.coping ? '<li onclick=gopage(' + home + ')><a href="javascript:;" data-page="1">' + home + '</a></li><span>...</span>' : '';
}
var start = current - opts.count,
end = current + opts.count;
((start > 1 && current < opts.count) || current == 1) && end++;
(current > pagecount - opts.count && current >= pagecount) && start++;
for (; start <= end; start++) {
if (start <= pagecount && start >= 1) {
if (start != current) {
html += '<li onclick=gopage(' + start + ')><a href="javascript:;" data-page="' + start + '">' + start + '</a></li>';
} else {
html += '<li class="' + opts.activecls + '" onclick=gopage(' + start + ')><a href="javascript:;"><span>' + start + '</span></a></li>';
}
}
}
if (current + opts.count < pagecount && current >= 1 && pagecount > opts.count) {
var end = opts.coping && opts.endpage ? opts.endpage : pagecount;
html += opts.coping ? '<span>...</span><li onclick=gopage(' + pagecount + ')><a href="javascript:;" data-page="' + pagecount + '">' + end + '</a></li>' : '';
}
if (current < pagecount) {//下一页
html += '<li onclick=gopage(' + (current + 1) + ')><a href="javascript:;" class="' + opts.nextcls + '">' + opts.nextcontent + '</a></li>'
} else {
$obj.find('.' + opts.nextcls) && $obj.find('.' + opts.nextcls).remove();
}
html += opts.jump ? '<input type="text" class="' + opts.jumpiptcls + '"><a href="javascript:;" onclick=pagego() class="' + opts.jumpbtncls + '">' + opts.jumpbtn + '</a>' : '';
$obj.empty().html(html);
};
//绑定事件
this.eventbind = function () {
var self = this;
var pagecount = this.gettotalpage();//总页数
$obj.off().on('click', 'a', function () {
if ($(this).hasclass(opts.nextcls)) {
var index = parseint($obj.find('.' + opts.activecls).text()) + 1;
} else if ($(this).hasclass(opts.prevcls)) {
var index = parseint($obj.find('.' + opts.activecls).text()) - 1;
} else if ($(this).hasclass(opts.jumpbtncls)) {
if ($obj.find('.' + opts.jumpiptcls).val() !== '') {
var index = parseint($obj.find('.' + opts.jumpiptcls).val());
} else {
return;
}
} else {
var index = parseint($(this).data('page'));
}
self.filling(index);
typeof opts.callback === 'function' && opts.callback(self);
});
//输入跳转的页码
$obj.on('input propertychange', '.' + opts.jumpiptcls, function () {
var $this = $(this);
var val = $this.val();
var reg = /[^\d]/g;
if (reg.test(val)) {
$this.val(val.replace(reg, ''));
}
(parseint(val) > pagecount) && $this.val(pagecount);
if (parseint(val) === 0) {//最小值为1
$this.val(1);
}
});
//回车跳转指定页码
$document.keydown(function (e) {
var self = this;
if (e.keycode == 13 && $obj.find('.' + opts.jumpiptcls).val()) {
var index = parseint($obj.find('.' + opts.jumpiptcls).val());
gopage(index);
//self.filling(index);
//typeof opts.callback === 'function' && opts.callback(self);
}
});
};
//初始化
this.init = function () {
this.filling(opts.current);
this.eventbind();
};
this.init();
};
$.fn.pagination = function (parameter, callback) {
if (typeof parameter == 'function') {//重载
callback = parameter;
parameter = {};
} else {
parameter = parameter || {};
callback = callback || function () { };
}
var options = $.extend({}, defaults, parameter);
return this.each(function () {
var pagination = new pagination(this, options);
callback(pagination);
});
};
})(jquery, window, document);

以上所述是小编给大家介绍的ajax读取txt并对txt内容进行分页显示，希望对大家有所帮助