记一次WebUploader的使用

WebUploader是百度开源的一个文件上传组件，因为其操作简洁大方，就在项目中使用了，记录一下。
效果是这样子：

这个样子是默认的效果。

这个是选择上传的图片，可以批量，选择后可以删除和添加更多。

这个是上传过程显示的效果。

<div id="container">
   <!--头部，相册选择和格式选择-->
   <div id="uploader">
       <div class="queueList">
           <div id="dndArea" class="placeholder">
               <div id="filePicker"></div>
               <p><s:text name="resource.upload.tip"/></p>
           </div>
       </div>
       <div class="statusBar" style="display:none;">
           <div class="progress">
               <span class="text">0%</span>
               <span class="percentage"></span>
           </div>
           <div class="info"></div>
           <div class="btns">
               <div id="filePicker2"></div>
               <div class="uploadBtn"><s:text name="resource.starttoupload"></s:text></div>
           </div>
       </div>
   </div>
</div>

js部分代码，下面这段代码是webuploader官方的示例代码uploader.js做的修改：

(function( $ ){
 // 当domReady的时候开始初始化
 $(function() {
 var filePerSize = [];//每个文件大小
 var fileName = [];
 var fileSize = 0;

 var $wrap = $('#uploader'),

 // 图片容器
 $queue = $('<ul class="filelist"></ul>').appendTo($wrap.find('.queueList')),

 // 状态栏，包括进度和控制按钮
 $statusBar = $wrap.find('.statusBar'),

 // 文件总体选择信息。
 $info = $statusBar.find('.info'),

 // 上传按钮
 $upload = $wrap.find('.uploadBtn'),

 // 没选择文件之前的内容。
 $placeHolder = $wrap.find('.placeholder'),

 $progress = $statusBar.find('.progress').hide(),

 // 添加的文件数量
 fileCount = 0,

 // 添加的文件总大小
 fileSize = 0,

 // 优化retina, 在retina下这个值是2
 ratio = window.devicePixelRatio || 1,

 // 缩略图大小
 thumbnailWidth = 110 * ratio,
 thumbnailHeight = 110 * ratio,

 // 可能有pedding, ready, uploading, confirm, done.
 state = 'pedding',

 // 所有文件的进度信息，key为file id
 percentages = {},
 // 判断浏览器是否支持图片的base64
 isSupportBase64 = ( function() {
 var data = new Image();
 var support = true;
 data.onload = data.onerror = function() {
 if( this.width != 1 || this.height != 1 ) {
 support = false;
 }
 }
 data.src = "data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///ywAAAAAAQABAAACAUwAOw==";
 return support;
 })(),

 // 检测是否已经安装flash，检测flash的版本
 flashVersion = ( function() {
 var version;
 try {
 version = navigator.plugins[ 'Shockwave Flash' ];
 version = version.description;
 } catch ( ex ) {
 try {
 version = new ActiveXObject('ShockwaveFlash.ShockwaveFlash')
 .GetVariable('$version');
 } catch ( ex2 ) {
 version = '0.0';
 }
 }
 version = version.match( /\d+/g );
 return parseFloat( version[ 0 ] + '.' + version[ 1 ], 10 );
 } )(),

 supportTransition = (function(){
 var s = document.createElement('p').style,
 r = 'transition' in s ||
 'WebkitTransition' in s ||
 'MozTransition' in s ||
 'msTransition' in s ||
 'OTransition' in s;
 s = null;
 return r;
 })(),

 // WebUploader实例
 uploader;

 if ( !WebUploader.Uploader.support('flash') && WebUploader.browser.ie ) {
 // flash 安装了但是版本过低。
 if (flashVersion) {
(function(container) {
 window['expressinstallcallback'] = function( state ) {
 switch(state) {
 case 'Download.Cancelled':
 //alert('您取消了更新！')
 break;

 case 'Download.Failed':
 //alert('安装失败')
 break;

 default:
 //alert('安装已成功，请刷新！');
 break;
 }
 delete window['expressinstallcallback'];
 };

 var swf = './expressInstall.swf';
 // insert flash object
 var html = '<object type="application/' +
 'x-shockwave-flash" data="' + swf + '" ';

 if (WebUploader.browser.ie) {
 html += 'classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000" ';
 }

 html += 'width="100%" height="100%" style="outline:0">' +
 '<param name="movie" value="' + swf + '" />' +
 '<param name="wmode" value="transparent" />' +
 '<param name="allowscriptaccess" value="always" />' +
 '</object>';

 container.html(html);
 })($wrap);

 // 压根就没有安转。
 } else {
 $wrap.html('<a href="http://www.adobe.com/go/getflashplayer" target="_blank" border="0"><img alt="get flash player" src="http://www.adobe.com/macromedia/style_guide/images/160x41_Get_Flash_Player.jpg" /></a>');
 }

 return;
 } else if (!WebUploader.Uploader.support()) {
 alert( 'Web Uploader not support your browser！');
 return;
 }

 // 实例化
 uploader = WebUploader.create({
 pick: {
 id: '#filePicker',
 name: 'multiFile',
 label: 'Click To Select'
 },
 formData: {
"status": "multi",
"contentsDto.contentsId": "xxxx",
"uploadNum": "xxxx",
"existFlg": "false",
 },
 dnd: '#dndArea',
 paste: '#uploader',
 method: 'POST',
 swf: '../../dist/Uploader.swf',
 chunked: false,
 chunkSize: 512 * 1024,
 chunkRetry:false,
 server: 'resource/upload.action?resourcetype=hd',
 fileVal:'multiFile',
 resize: false,
 // runtimeOrder: 'flash',

 /* accept: {
 title: 'Images',
 extensions: 'gif,jpg,bmp,png,m2v',
 mimeTypes: 'image/*,video/mpeg',
 }, */

 // 禁掉全局的拖拽功能。这样不会出现图片拖进页面的时候，把图片打开。
 disableGlobalDnd: true,
 fileNumLimit: 300,
 fileSizeLimit: 200 * 1024 * 1024, // 200 M
 fileSingleSizeLimit: 50 * 1024 * 1024 // 50 M
 });

 // 拖拽时不接受 js, txt 文件。
 uploader.on('dndAccept', function( items ) {
 var denied = false,
 len = items.length,
 i = 0,
 // 修改js类型
 unAllowed = 'text/plain;application/javascript ';

 for ( ; i < len; i++ ) {
 // 如果在列表里面
 if ( ~unAllowed.indexOf( items[ i ].type ) ) {
 denied = true;
 break;
 }
 }
 return !denied;
 });

 //点击按钮弹出选择框
 /*uploader.on('dialogOpen', function() {
 console.log('here');
 });*/

 // 添加"添加文件"的按钮，
 uploader.addButton({
 id: '#filePicker2',
 label: '<s:text name="resource.addmore"></s:text>'
 });

 uploader.on('ready', function() {
 window.uploader = uploader;
 });

 // 当有文件添加进来时执行，负责view的创建
 function addFile( file ) {
 var $li = $( '<li id="' + file.id + '">' +
 '<p class="title">' + file.name + '</p>' +
 '<p class="imgWrap"></p>'+
 '<p class="progress"><span></span></p>' +
 '</li>' ),

 $btns = $('<div class="file-panel">' +
 '<span class="cancel"><s:text name="resource.delete"></s:text></span>' +
 '<span class="rotateRight"><s:text name="resource.rotateToRight"></s:text></span>' +
 '<span class="rotateLeft"><s:text name="resource.rotateToLeft"></s:text></span></div>').appendTo( $li ),
 $prgress = $li.find('p.progress span'),
 $wrap = $li.find( 'p.imgWrap' ),
 $info = $('<p class="error"></p>'),

 showError = function( code ) {
 switch( code ) {
 case 'exceed_size':
 text = '<s:text name="resource.exceedSize"></s:text>';
 break;

 case 'interrupt':
 text = '<s:text name="resource.pauseupload"></s:text>';
 break;

 default:
 text = '<s:text name="resource.uploadfailed"></s:text>';
 break;
 }

 $info.text( text ).appendTo( $li );
 };

 if ( file.getStatus() === 'invalid' ) {
 showError( file.statusText );
 } else {
 // @todo lazyload
 $wrap.text( '<s:text name="resource.onPreview"></s:text>' );
 uploader.makeThumb( file, function( error, src ) {
 var img;

 if ( error ) {
 $wrap.text( '<s:text name="resource.unablePreview"></s:text>' );
 return;
 }

 if( isSupportBase64 ) {
 img = $('<img src="'+src+'">');
 $wrap.empty().append( img );
 } else {
 /*$.ajax('../../server/preview.php', {
 method: 'POST',
 data: src,
 dataType:'json'
 }).done(function( response ) {
 if (response.result) {
 img = $('<img src="'+response.result+'">');
 $wrap.empty().append( img );
 } else {
 $wrap.text("预览出错");
 }
 });*/
 }
 }, thumbnailWidth, thumbnailHeight );

 percentages[ file.id ] = [ file.size, 0 ];
 file.rotation = 0;
 }

 file.on('statuschange', function( cur, prev ) {
 if ( prev === 'progress' ) {
 $prgress.hide().width(0);
 } else if ( prev === 'queued' ) {
 $li.off( 'mouseenter mouseleave' );
 $btns.remove();
 }
 // 成功
 if (cur === 'error' || cur === 'invalid') {
 console.log( file.statusText );
 showError( file.statusText );
 percentages[ file.id ][ 1 ] = 1;
 } else if ( cur === 'interrupt' ) {
 showError( 'interrupt' );
 } else if ( cur === 'queued' ) {
 $info.remove();
 $prgress.css('display', 'block');
 percentages[ file.id ][ 1 ] = 0;
 } else if ( cur === 'progress' ) {
 $info.remove();
 $prgress.css('display', 'block');
 } else if ( cur === 'complete' ) {
 $prgress.hide().width(0);
 $li.append('<span class="success"></span>');
 }

 $li.removeClass('state-' + prev).addClass('state-' + cur);
 });

 $li.on('mouseenter', function() {
 $btns.stop().animate({height: 30});
 });

 $li.on('mouseleave', function() {
 $btns.stop().animate({height: 0});
 });

 $btns.on('click', 'span', function() {
 var index = $(this).index(),
 deg;
 switch (index) {
 case 0:
 uploader.removeFile( file );
 return;

 case 1:
 file.rotation += 90;
 break;

 case 2:
 file.rotation -= 90;
 break;
 }
 if (supportTransition) {
 deg = 'rotate(' + file.rotation + 'deg)';
 $wrap.css({
 '-webkit-transform': deg,
 '-mos-transform': deg,
 '-o-transform': deg,
 'transform': deg
 });
 } else {
 $wrap.css( 'filter', 'progid:DXImageTransform.Microsoft.BasicImage(rotation='+ (~~((file.rotation/90)%4 + 4)%4) +')');
 }
 });
 $li.appendTo($queue);
 }

 // 负责view的销毁
 function removeFile( file ) {
 var $li = $('#'+file.id);

 delete percentages[ file.id ];
 updateTotalProgress();
 $li.off().find('.file-panel').off().end().remove();
 }

 function updateTotalProgress() {
 var loaded = 0,
 total = 0,
 spans = $progress.children(),
 percent;
 $.each( percentages, function( k, v ) {
 total += v[ 0 ];
 loaded += v[ 0 ] * v[ 1 ];
 } );

 percent = total ? loaded / total : 0;
 spans.eq( 0 ).text(Math.round( percent * 100 ) + '%');
 spans.eq( 1 ).css('width', Math.round( percent * 100 ) + '%');
 updateStatus();
 }

 function updateStatus() {
 var text = '', stats;
 if ( state === 'ready' ) {
 text = '<s:text name="resource.selected"></s:text>' + fileCount + ', <s:text name="resource.totalSize"></s:text>' +
 WebUploader.formatSize(fileSize);
 } else if ( state === 'confirm' ) {
 stats = uploader.getStats();
 if ( stats.uploadFailNum ) {
 text = '<s:text name="resource.uploaded"></s:text>' + stats.successNum+ ', <s:text name="resource.failed"></s:text>'+
 stats.uploadFailNum + ', <a class="retry" href="#" style="color:red;">' + '<s:text name="resource.retry"></s:text>'+'</a>&nbsp;<s:text name="resource.or"></s:text><a class="ignore" href="#" style="color:blue;">&nbsp;<s:text name="resource.ignore"></s:text></a>'
 }
 } else {
 stats = uploader.getStats();
 text = '<s:text name="resource.total"></s:text>' + fileCount + '(' +
 WebUploader.formatSize( fileSize ) +
 '), <s:text name="resource.uploaded"></s:text>:' + stats.successNum;

 if ( stats.uploadFailNum ) {
 text += ', <s:text name="resource.failed"></s:text>:' + stats.uploadFailNum;
 }
 }
 $info.html(text);
 }

 /*关闭上传框窗口后恢复上传框初始状态*/
 function closeUploader() { 
 // 移除所有缩略图并将上传文件移出上传序列
 for (var i = 0; i < uploader.getFiles().length; i++) {
 // 将图片从上传序列移除
 uploader.removeFile(uploader.getFiles()[i]);
 // 将图片从缩略图容器移除
 var $li = $('#' + uploader.getFiles()[i].id);
 $li.off().remove();
 }
 setState('pedding');
 // 重置文件总个数和总大小
 fileCount = 0;
 fileSize = 0;
 // 重置uploader，目前只重置了文件队列
 uploader.reset();
 // 更新状态等，重新计算文件总个数和总大小
 updateStatus();
 }

 function setState( val ) {
 var file, stats;
 if ( val === state ) {
 return;
 }
 $upload.removeClass( 'state-' + state );
 $upload.addClass( 'state-' + val );
 state = val;
 switch (state) {
 case 'pedding':
 $placeHolder.removeClass( 'element-invisible' );
 $queue.hide();
 $statusBar.addClass( 'element-invisible' );
 uploader.refresh();
 break;

 case 'ready':
 $placeHolder.addClass( 'element-invisible' );
 $( '#filePicker2' ).removeClass( 'element-invisible');
 $queue.show();
 $statusBar.removeClass('element-invisible');
 uploader.refresh();
 break;

 case 'uploading':
 $( '#filePicker2' ).addClass( 'element-invisible' );
 $progress.show();
 $upload.text( '<s:text name="resource.pauseupload"></s:text>' );
 var fileArray1 = uploader.getFiles();
 var fileNames = [];
 fileSize = 0;
 for(var i=0; i<fileArray1.length; i++) {
 fileNames.push(fileArray1[i].name);
 fileSize += fileArray1[i].size;
 filePerSize.push(fileArray1[i].size);
 fileName.push(fileArray1[i].name);
 }
 $.extend(true, uploader.options.formData, {"fileSize": fileSize, "multiFileName": fileName, "filePerSize": filePerSize});
 break;

 case 'paused':
 $progress.show();
 $upload.text('<s:text name="resource.continueupload"></s:text>');
 break;

 case 'confirm':
 $progress.hide();
 $('#filePicker2').removeClass('element-invisible');
 $upload.text('<s:text name="resource.starttoupload"></s:text>');

 stats = uploader.getStats();
 if (stats.successNum && !stats.uploadFailNum) {
 setState('finish');
 return;
 }
 break;
 case 'finish':
 stats = uploader.getStats();
 //alert(stats.successNum);
 if (stats.successNum) {
 if(flag) {
 //alert('上传成功');
 confirmBox("<s:text name='resource.tiptitle'></s:text>",
"Upload Success",
 function(tag) {
 if (tag) {
 var url = 'resource/uploadHd.jsp';
 loadUrl(url);
 } else {
 return;
 } 
 });
 $("#boxwhite a[name=f]").html("<s:text name="box.no"/>").hide(); 
 $("#boxwhite a[name=t]").html("<s:text name="box.sure"/>");
 } else {
 loadUrl('resource/uploadHd.jsp');
 }
 //刷新界面 
 //setTimeout("loadUrl('resource/uploadHd.jsp')", 1000);
 } else {
 // 没有成功的图片，重设
 state = 'done';
 location.reload();
 }
 break;
 }
 updateStatus();
 }

 var flag = true;

 uploader.on("uploadAccept", function(object, ret){
 if(ret != null && ret != '') {
 var data = JSON.parse(ret._raw);
 if(data != null && data != '') {
 if(data.resultCode == '1' || data.resultCode == '2') {
 var tip = '';
 if(data.resultCode == '1') {
 tip = "<s:text name='resource.fileExists'></s:text>";
 }else {
 tip = "<s:text name='resource.fileTypeError'></s:text>" + data.message;
 }
 confirmBox("<s:text name='resource.tiptitle'></s:text>",
 tip,
 function(tag) {
 if (tag) {
 flag = false;
 updateStatus();
 var url = 'resource/uploadHd.jsp';
 loadUrl(url);
 } else {
 return;
 } 
 });
 $("#boxwhite a[name=f]").html("<s:text name="box.no"/>").hide(); 
 $("#boxwhite a[name=t]").html("<s:text name="box.sure"/>");
 } else {
 flag = true;
 }
 }
 }
 });

 uploader.onUploadProgress = function(file, percentage) {
 var $li = $('#'+file.id),
 $percent = $li.find('.progress span');

 $percent.css( 'width', percentage * 100 + '%' );
 percentages[ file.id ][ 1 ] = percentage;
 updateTotalProgress();
 };

 uploader.on("uploadError", function(file, reason){
 alert("uploadError");
 });

 uploader.onFileQueued = function(file) {
 fileCount++;
 fileSize += file.size;
 if (fileCount === 1) {
 $placeHolder.addClass('element-invisible');
 $statusBar.show();
 }

 addFile(file);
 setState('ready');
 updateTotalProgress();
 };

 /**
 * 移出队列
 */
 uploader.onFileDequeued = function( file ) {
 fileCount--;
 fileSize -= file.size;
 if ( !fileCount ) {
 setState('pedding');
 }
 removeFile(file);
 updateTotalProgress();
 };

 uploader.on('all', function(type) {
 var stats;
 switch(type) {
 case 'uploadFinished':
 setState('confirm');
 break;

 case 'startUpload':
 setState('uploading');
 break;

 case 'stopUpload':
 setState('paused');
 break;
 }
 });


 uploader.onError = function( code ) {
 if (type=="Q_TYPE_DENIED"){
 //dialogMsg("myModal","messageP","请上传JPG、PNG格式文件");
 }else if(type=="F_EXCEED_SIZE"){
 //dialogMsg("myModal","messageP","文件大小不能超过8M");
 }
 uploader.reset();
 fileSize = 0;
 fileName = [];
 filePerSize = [];
 }; 

 /**
 * 点击上传按钮
 */
 $upload.on('click', function() {
 if ( $(this).hasClass( 'disabled' ) ) {
 return false;
 }
 if (state === 'ready') {
 uploader.upload();
 } else if (state === 'paused') {
 uploader.upload();
 } else if (state === 'uploading') {
 uploader.stop();
 }
 });

 /**
 * 点击重试按钮
 */
 $info.on( 'click', '.retry', function() {
 uploader.retry();
 } );

 /**
 * 点击忽略按钮
 */
 $info.on( 'click', '.ignore', function() {
 //执行忽略动作，把图片清除
 closeUploader();
 });

 $upload.addClass( 'state-' + state );
 updateTotalProgress();
 });
})( jQuery );

使用Action接收时，可以这么写：

//多文件上传的文件对象，多文件是一个一个文件上传，所以multiFile是当前正在上传的文件对象
private File multiFile;
//多文件上传文件对象的名称，当前正在上传的文件名
private String multiFileFileName;
//所有文件的总大小
private String fileSize;
//文件名列表
private String[] multiFileName;
//每个文件的大小
private String[] filePerSize;
public void setMultiFile(File multiFile) {
this.multiFile = multiFile;
}

public File getMultiFile() {
return multiFile;
}

public void setMultiFileFileName(String multiFileFileName) {
this.multiFileFileName = multiFileFileName;
}

public void setFileSize(String fileSize) {
this.fileSize = fileSize;
}

public void setMultiFileName(String[] multiFileName) {
this.multiFileName = multiFileName;
}

public void setFilePerSize(String[] filePerSize) {
this.filePerSize = filePerSize;
}
public void uploadFile() {
    String physicPath = Constant.AD_RESOURCE_BASE_DIR;
    String subPath = "";
int resolution = -1;
    String type = request.getParameter("resourcetype");
if(StringUtils.isNotBlank(type)) {
if(Constant.RESOURCE_TYPE_HD.equals(type)) {
            subPath = Constant.AD_RESOURCE_HD_DIR;
            resolution = 1;
        } else if(Constant.RESOURCE_TYPE_SD.equals(type)) {
            subPath = Constant.AD_RESOURCE_SD_DIR;
            resolution = 0;
        }
    }
    File fdir = new File(physicPath+"/"+subPath);
if(!fdir.exists()) {
        fdir.mkdirs();
    }
    String resPath = "/" + subPath + "/" + multiFileFileName;
    String path = physicPath + resPath;//文件路径
    PrintWriter out = null;
try {
out = response.getWriter();
    } catch (IOException e) {
        log.error(e);
    }
if(!isValidResource(multiFileFileName.substring(multiFileFileName.lastIndexOf(".") + 1))) {
        ResultJson resultJson = new ResultJson();
        resultJson.setResultCode("2");
        resultJson.setMessage(multiFileFileName);
out.print(JsonUtil.toJsonString(resultJson));
return;
    }
try {
        File file = this.getMultiFile();
//判断文件是否已经存在，不存在则存，否则不存
        String savePath = path.substring(path.lastIndexOf("/" + Constant.AD_RESOURCE_STORE_BASE_DIR));
        boolean isExists = adResourceService.queryFile(savePath);//linux下图片名区分大小写
        log.info("isExist=" + isExists);
if(isExists) {
            ResultJson resultJson = new ResultJson();
            resultJson.setResultCode("1");
            resultJson.setMessage("same name file exists!");
            response.getWriter().print(JsonUtil.toJsonString(resultJson));
return;
        } else {
            ResultJson resultJson = new ResultJson();
            resultJson.setResultCode("0");
            resultJson.setMessage("ok");
            response.getWriter().print(JsonUtil.toJsonString(resultJson));
        }
        FileUtil.randomAccessFile(path, file);
        log.info("upload finish....");
//insert into db.
        File f = new File(path);
//1:bmp;2:jpg;3:gif;4:png;5:mpg;6:m2v
        log.info("f.exists()=" + f.exists());
if(f.exists()) {
            String fname = f.getName();
            log.info("filename=" + fname);
            String fsuffix = fname.substring(fname.lastIndexOf(".") + 1);
if(fname.endsWith(".bmp") || fname.endsWith(".BMP") || fname.endsWith(".jpg") || fname.endsWith(".JPG")
                    || fname.endsWith(".gif") || fname.endsWith(".GIF") || fname.endsWith(".png") || fname.endsWith(".PNG")) {

                BufferedImage bimg = ImageIO.read(f);
int picWidth = bimg.getWidth();
int picHeight = bimg.getHeight();
int picType = 0;
switch (fsuffix.toLowerCase()) {
case Constant.IMG_FORMAT_BMP:
                    picType = 1;
break;
case Constant.IMG_FORMAT_JPG:
                    picType = 2;
break;
case Constant.IMG_FORMAT_PNG:
                    picType = 4;
break;
case Constant.IMG_FORMAT_GIF:
                    picType = 3;
break;
                }
                System.out.println("fileSize=" + file.length());
                log.info("fileSize=" + file.length());
                adResourceService.upload(resolution, resPath, picHeight, picWidth, (int)file.length(), picType, fsuffix);
            } else if(fname.endsWith(".mpg") || fname.endsWith(".MPG") || fname.endsWith(".m2v") || fname.endsWith(".M2V")) {
//截取画像,获取分辨率
//mpg , m2v,直接把文件路径存进去，在预览的时候动态生成帧画面
int picType = 0;
if(fname.endsWith(".mpg") || fname.endsWith(".MPG")) {
                    picType = 5;
                } else if(fname.endsWith(".m2v") || fname.endsWith(".M2V")) {
                    picType = 6;
                }

                boolean b = FFmpegUtil.transfer(path, path+".jpg");//在文件名后直接加后缀，然后存到数据库中
if(b) {
                    File snapFile = new File(path+".jpg");
                    BufferedImage bimg = ImageIO.read(snapFile);
int picWidth = bimg.getWidth();
int picHeight = bimg.getHeight();
//update db.
                    adResourceService.uploadVideo(resolution, resPath, picHeight, picWidth, (int)file.length(), picType, fsuffix, resPath+".jpg");
                } else {
                    log.error("generate snapshot file failed from " + path);
                }
            } else {
                log.error("file type invalid, we delete it...");
                f.delete();
            }
        }
    } catch (IOException e) {
        e.printStackTrace();
        log.error(e);
    }
}

实际场景中可以根据自己的需要进行修改。