PHP Ajax上传文件实例,ajaxfileupload.js

2024-09-04 11:45:00

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讲过利用jquery ajax与php实现图片上传,下面我介绍利用php ajax实现各种文件无刷新上传,直接放实例希望给各位同学有帮助,可以批量进行添加上传,简单方便,代码如下:

<script type="text/javascript" src="jquery-1.5.1.min.js"></script>

<script    type="text/javascript" >

jQuery.extend({



    createUploadIframe: function(id, uri)

    {

           //create frame

            var frameId = 'jUploadFrame' + id;

            var iframeHtml = '<iframe id="' + frameId + '" name="' + frameId + '" style="position:absolute; top:-9999px; left:-9999px"';

           if(window.ActiveXObject)

           {

                if(typeof uri== 'boolean'){

                  iframeHtml += ' src="' + 'javascript：false' + '"';

                }

                else if(typeof uri== 'string'){

                  iframeHtml += ' src="' + uri + '"';

                }

           }

           iframeHtml += ' />';

           jQuery(iframeHtml).appendTo(document.body);

            return jQuery('#' + frameId).get(0);

    },

    createUploadForm: function(id, fileElementId, data)

    {

       //create form

       var formId = 'jUploadForm' + id;

       var fileId = 'jUploadFile' + id;

       var form = jQuery('<form  action="" method="POST" name="' + formId + '" id="' + formId + '" enctype="multipart/form-data"></form>');

       if(data)

       {

           for(var i in data)

           {

              jQuery('<input type="hidden" name="' + i + '" value="' + data[i] + '" />').appendTo(form);

           }

       }

       var oldElement = jQuery('#' + fileElementId);

       var newElement = jQuery(oldElement).clone();

       jQuery(oldElement).attr('id', fileId);

       jQuery(oldElement).before(newElement);

       jQuery(oldElement).appendTo(form);

       //set attributes

       jQuery(form).css('position', 'absolute');

       jQuery(form).css('top', '-1200px');

       jQuery(form).css('left', '-1200px');

       jQuery(form).appendTo('body');

       return form;

    },

    ajaxFileUpload: function(s) {

        // TODO introduce global settings, allowing the client to modify them for all requests, not only timeout

        s = jQuery.extend({}, jQuery.ajaxSettings, s);

        var id = new Date().getTime()

       var form = jQuery.createUploadForm(id, s.fileElementId, (typeof(s.data)=='undefined'?false:s.data));

       var io = jQuery.createUploadIframe(id, s.secureuri);

       var frameId = 'jUploadFrame' + id;

       var formId = 'jUploadForm' + id;

        // Watch for a new set of requests

        if ( s.global && ! jQuery.active++ )

       {

           jQuery.event.trigger( "ajaxStart" );

       }

        var requestDone = false;

        // Create the request object

        var xml = {}

        if ( s.global )

            jQuery.event.trigger("ajaxSend", [xml, s]);

        // Wait for a response to come back

        var uploadCallback = function(isTimeout)

       {

           var io = document.getElementById(frameId);

            try

           {

              if(io.contentWindow)

              {

                   xml.responseText = io.contentWindow.document.body?io.contentWindow.document.body.innerHTML:null;

                   xml.responseXML = io.contentWindow.document.XMLDocument?io.contentWindow.document.XMLDocument:io.contentWindow.document;



              }else if(io.contentDocument)

              {

                   xml.responseText = io.contentDocument.document.body?io.contentDocument.document.body.innerHTML:null;

                  xml.responseXML = io.contentDocument.document.XMLDocument?io.contentDocument.document.XMLDocument:io.contentDocument.document;

              }

            }catch(e)

           {

              jQuery.handleError(s, xml, null, e);

           }

            if ( xml || isTimeout == "timeout")

           {

                requestDone = true;

                var status;

                try {

                    status = isTimeout != "timeout" ? "success" : "error";

                    // Make sure that the request was successful or notmodified

                    if ( status != "error" )

                  {

                        // process the data (runs the xml through httpData regardless of callback)

                        var data = jQuery.uploadHttpData( xml, s.dataType );

                        // If a local callback was specified, fire it and pass it the data

                        if ( s.success )

                            s.success( data, status );



                        // Fire the global callback

                        if( s.global )

                            jQuery.event.trigger( "ajaxSuccess", [xml, s] );

                    } else

                        jQuery.handleError(s, xml, status);

                } catch(e)

              {

                    status = "error";

                    jQuery.handleError(s, xml, status, e);

                }

                // The request was completed

                if( s.global )

                    jQuery.event.trigger( "ajaxComplete", [xml, s] );

                // Handle the global AJAX counter

                if ( s.global && ! --jQuery.active )

                    jQuery.event.trigger( "ajaxStop" );

                // Process result

                if ( s.complete )

                    s.complete(xml, status);

                jQuery(io).unbind()

                setTimeout(function()

                                {   try

                                   {

                                       jQuery(io).remove();

                                       jQuery(form).remove();



                                   } catch(e)

                                   {

                                       jQuery.handleError(s, xml, null, e);

                                   }

                                }, 100)

                xml = null

            }

        }

        // Timeout checker

        if ( s.timeout > 0 )

       {

            setTimeout(function(){

                // Check to see if the request is still happening

                if( !requestDone ) uploadCallback( "timeout" );

            }, s.timeout);

        }

        try

       {

           var form = jQuery('#' + formId);

           jQuery(form).attr('action', s.url);

           jQuery(form).attr('method', 'POST');

           jQuery(form).attr('target', frameId);

            if(form.encoding)

           {

              jQuery(form).attr('encoding', 'multipart/form-data');

            }

            else

           {

              jQuery(form).attr('enctype', 'multipart/form-data');

            }

            jQuery(form).submit();

        } catch(e)

       {

            jQuery.handleError(s, xml, null, e);

        }



       jQuery('#' + frameId).load(uploadCallback );

        return {abort: function () {}};

    },

    uploadHttpData: function( r, type ) {

        var data = !type;

        data = type == "xml" || data ? r.responseXML : r.responseText;

        // If the type is "script", eval it in global context

        if ( type == "script" )

            jQuery.globalEval( data );

        // Get the JavaScript object, if JSON is used.

        if ( type == "json" )

            eval( "data = " + data );

        // evaluate scripts within html

        if ( type == "html" )

            jQuery("<div>").html(data).evalScripts();

        return data;

    }

})

</script>

<form id="upform" action="" method="post" enctype="multipart/form-data">

    <input id='fname' size='80' /><br> <input type="file" name="file1"

       id="file1" size="30" /> <input type="button" value="上传"

       onclick="return ajaxFileUpload();" /> <span id="msg"

       style="display: none">UpLoading...</span>

</form>

<script type="text/javascript">

var str = '';

function ajaxFileUpload(){

    $("#msg")

    .ajaxStart(function(){

       $(this).show();

    });

    /*

    .ajaxComplete(function(){

       $(this).hide();

    });

    */

    $.ajaxFileUpload(

    {

       url:'up_deal.php',

       secureuri:false,

       fileElementId:'file1',

       dataType: 'text',

       //data:{name:'qinmi', id:'123'},

       success: function(data){

              if(data=='error'){

                  $('#msg').html("<span style='color:red'>上传失败</span>");

              }else{

                  $('#msg').html("<span style='color:green'>上传成功</span>");

                  str +=  data+'@';

                  $('#fname').val(str);

              }

           }

       }

    );

    return false;

}

</script>

up_deal.php,代码如下:

<?php

if ((($_FILES["file1"]["type"] == "image/gif")

|| ($_FILES["file1"]["type"] == "image/jpeg")

|| ($_FILES["file1"]["type"] == "image/bmp")

|| ($_FILES["file1"]["type"] == "image/pjpeg"))

&& ($_FILES["file1"]["size"] < 100000)){//100KB

    $extend = explode(".",$_FILES["file1"]["name"]);

    $key = count($extend)-1;

    $ext = ".".$extend[$key];

    $newfile = time().$ext;

    //开源代码Vevb.com

    if(!file_exists('upload')){mkdir('upload');}

    move_uploaded_file($_FILES["file1"]["tmp_name"],"upload/" . $newfile);

    @unlink($_FILES['file1']);

    echo $newfile;

}else {

    echo 'error';

}

?>