ajaxFileUpload+ThinkPHP+jqGrid 图片上传与显示-白红宇

ajaxFileUpload+ThinkPHP+jqGrid 图片上传与显示

阅读量：6997 次

发布时间：2019-06-27

本文共 9466 字，大约阅读时间需要 31 分钟。

jqgrid上要显示图片和上传图片的列,格式如下:

{label:'图片',name:'icon',index:'icon',autowidth:true,formatter:alarmFormatter,editable:true,edittype:'custom', editoptions:{custom_element: ImgUpload, custom_value:GetImgValue}},

注意:edittype要为custom 也就是自定义编辑格式.

editoptions:{custom_element: ImgUpload, custom_value:GetImgValue}}

在 jqgrid 的列表里显示图片用到的 js function 此处与图片的上传没关系.

function alarmFormatter(cellvalue, options, rowdata){        return ''    }

下面为上传用到的 js 文件 upload.js

/** 4. 自定义文件上传列 5. @param value 6. @param editOptions 7. @returns {*|jQuery|HTMLElement} 8. @constructor */function ImgUpload(value, editOptions) {    var span = $("");    var hiddenValue = $("",{type:"hidden", val:value, name:"fileName", id:"fileName"});    var image = $("",{name:"uploadImage", id:"uploadImage",value:'',style:"display:none;width:80px;height:80px"});    var el = document.createElement("input");    el.type = "file";    el.id = "imgFile";    el.name = "imgFile";    el.onchange = UploadFile;    span.append(el).append(hiddenValue).append(image);    return span;}/** 9. 调用 ajaxFileUpload 上传文件 10. @returns {boolean} 11. @constructor */function UploadFile() {    $.ajaxFileUpload({        url : 'index.php/Home/upload/upload',        type : 'POST',        secureuri:false,        fileElementId: 'imgFile',        dataType : 'json',        success: function(data,status){            //显示图片            $("#fileName").val(data.id);            $("#uploadImage").attr("src","index.php/Home/download/download?id=" + data.id);            $("#uploadImage").show();            $("#imgFile").hide()        },        error: function(data, status, e){            alert(e);        }    });    return false;}/** 12. icon 编辑的时候该列对应的实际值 13. @param elem 14. @param sg 15. @param value 16. @returns {*|jQuery} 17. @constructor */function GetImgValue(elem, sg, value){    return $(elem).find("#fileName").val();}

下面为ThinkPHP上传代码部分


    maxSize = 4194304; //4MB        $upload->exts = array('jpg','gif','png','jpeg');        $upload->rootPath = C("FILE_PATH"); //根目录        $upload->autoSub = false;//        $upload->savePath = C("FILE_PATH"); //附件上传目录, 相对于根目录//        $upload->saveName = array('uniqid','');        //上传文件        $info = $upload->uploadOne($_FILES['imgFile']);        if(!$info){ //上传错误提示信息            $this->e($upload->getError());            $this->returnError($upload->getError());        }else{            //存数据库部分            $photo = D('photo');            $photo->name = $info['savename'];            $photo->realName = $info['name'];            $photo->suffix = $info['ext'];            $photo->size = $info['size'];            //...省略部分代码            $id = $photo->add();//            $this->ajaxReturn(array('msg'=>$id),"JSON");            echo json_encode(array('id'=>$id));        }    }}

因为 thinkphp 自带的 ajaxReturn 返回的数据带有pre标签,会导致ajaxFIleUpload 解析不了,所以用了原生的 echo json_encode() 函数

ajaxFileUpload.js

jQuery.extend({    createUploadIframe: function(id, uri)    {        //create frame        var frameId = 'jUploadFrame' + id;        var iframeHtml = '&lt;/form&gt;');        if(data)        {            for(var i in data)            {                jQuery('&lt;input type="hidden" name="' + i + '" value="' + data[i] + '" /&gt;').appendTo(form);            }        }        var oldElement;        if(fileElement == null)            oldElement = jQuery('#' + fileElementId);        else            oldElement = fileElement;        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),s.fileElement);        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 &amp;&amp; ! 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 &amp;&amp; ! --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 &gt; 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(){            try            {                jQuery('#' + frameId).remove();                jQuery(form).remove();            }            catch(e){}        }};    },    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("&lt;div&gt;").html(data).evalScripts();        return data;    },    handleError: function( s, xml, status, e ) {        // If a local callback was specified, fire it        if ( s.error )            s.error( xml, status, e );        // Fire the global callback        if ( s.global )            jQuery.event.trigger( "ajaxError", [xml, s, e] );    }});

转载于:https://my.oschina.net/zcqshine/blog/596062

你可能感兴趣的文章