使用swfUpload進行批量上傳圖片
阿新 • • 發佈：2019-01-10
uploadInput頁面：
<%@ page language="java" import="java.util.*" pageEncoding="GB18030"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>上傳照片</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
<link href="swfupload/default.css" rel="stylesheet" type="text/css" />
<script type="text/javascript" src="/tiantian/swfupload/swfupload.js"></script>
<script type="text/javascript" src="/tiantian/swfupload/handlers.js"></script>
<script type="text/javascript">
var swfu;
window.onload = function () {
swfu = new SWFUpload({
// Backend Settings
upload_url: "/tiantian/picture/upload",//上傳到哪個地址
post_params: {"albumId": "${album.id}"},//傳過去的引數
// File Upload Settings
file_size_limit : "20 MB", // 2MB
file_types : "*.jpg;*.jpeg;*.gif",
file_types_description : "JPG Images",
file_upload_limit : 0,
// Event Handler Settings - these functions as defined in Handlers.js
// The handlers are not part of SWFUpload but are part of my website and control how
// my website reacts to the SWFUpload events.
swfupload_preload_handler : preLoad,
swfupload_load_failed_handler : loadFailed,
file_queue_error_handler : fileQueueError,
file_dialog_complete_handler : fileDialogComplete,
upload_progress_handler : uploadProgress,
upload_error_handler : uploadError,
upload_success_handler : uploadSuccess,
upload_complete_handler : uploadComplete,
// Button Settings
button_image_url : "/tiantian/images/swfupload/SmallSpyGlassWithTransperancy_17x18.png",
button_placeholder_id : "spanButtonPlaceholder",
button_width: 180,
button_height: 18,
button_text : '<span class="button">Select Images <span class="buttonSmall">(2 MB Max)</span></span>',
button_text_style : '.button { font-family: Helvetica, Arial, sans-serif; font-size: 12pt; } .buttonSmall { font-size: 10pt; }',
button_text_top_padding: 0,
button_text_left_padding: 18,
button_window_mode: SWFUpload.WINDOW_MODE.TRANSPARENT,
button_cursor: SWFUpload.CURSOR.HAND,
// Flash Settings
flash_url : "/tiantian/swfupload/swfupload.swf",
flash9_url : "/tiantian/swfupload/swfupload_fp9.swf",
custom_settings : {
upload_target : "divFileProgressContainer"
},
//Image Resize:no,
// Debug Settings
debug: false
});
};
</script>
<style type="text/css">
#tophead {
text-align:left;
padding-left:10px;
margin-top:10px;
}
</style>
</head>
<body>
<div id="tophead">
<a href="picture/index">返回相簿首頁</a>
</div>
<div id="content" style="text-align: left">
<h2>${album.name}</h2>
<p>upload Images to ${album.name}</p>
<form>
<div style="width: 180px; height: 18px; border: solid 1px #7FAAFF; background-color: #C5D9FF; padding: 2px;">
<span id="spanButtonPlaceholder"></span>
</div>
</form>
<div id="divFileProgressContainer" style="height: 75px;"></div>
<div id="thumbnails"></div>
</div>
</body>
</html>
上傳頁面用到的handler.js檔案的內容：
function preLoad() {
if (!this.support.loading) {
alert("You need the Flash Player 9.028 or above to use SWFUpload.");
return false;
}
}
function loadFailed() {
alert("Something went wrong while loading SWFUpload. If this were a real application we'd clean up and then give you an alternative");
}
function fileQueueError(file, errorCode, message) {
try {
var imageName = "error.gif";
var errorName = "";
if (errorCode === SWFUpload.errorCode_QUEUE_LIMIT_EXCEEDED) {
errorName = "You have attempted to queue too many files.";
}
if (errorName !== "") {
alert(errorName);
return;
}
switch (errorCode) {
case SWFUpload.QUEUE_ERROR.ZERO_BYTE_FILE:
imageName = "zerobyte.gif";
break;
case SWFUpload.QUEUE_ERROR.FILE_EXCEEDS_SIZE_LIMIT:
imageName = "toobig.gif";
break;
case SWFUpload.QUEUE_ERROR.ZERO_BYTE_FILE:
case SWFUpload.QUEUE_ERROR.INVALID_FILETYPE:
default:
alert(message);
break;
}
addImage("images/" + imageName);
} catch (ex) {
this.debug(ex);
}
}
function fileDialogComplete(numFilesSelected, numFilesQueued) {
try {
if (numFilesQueued > 0) {
this.startResizedUpload(this.getFile(0).ID, 100, 100, SWFUpload.RESIZE_ENCODING.JPEG, 100);
}
} catch (ex) {
this.debug(ex);
}
}
function uploadProgress(file, bytesLoaded) {
try {
var percent = Math.ceil((bytesLoaded / file.size) * 100);
var progress = new FileProgress(file, this.customSettings.upload_target);
progress.setProgress(percent);
progress.setStatus("Uploading...");
progress.toggleCancel(true, this);
} catch (ex) {
this.debug(ex);
}
}
function uploadSuccess(file, serverData) {
try {
var progress = new FileProgress(file, this.customSettings.upload_target);
if (serverData.substring(0, 7) === "FILEID:") {
//把上傳的照片的縮圖在頁面上進行顯示
addImage("picture/thumbnail/" + serverData.substring(7));
// alert(serverData.substring(7)+"hello");
progress.setStatus("Upload Complete.");
progress.toggleCancel(false);
} else {
addImage("images/swfupload/error.gif");
progress.setStatus("Error.");
progress.toggleCancel(false);
alert(serverData);
}
} catch (ex) {
this.debug(ex);
}
}
function uploadComplete(file) {
try {
/* I want the next upload to continue automatically so I'll call startUpload here */
if (this.getStats().files_queued > 0) {
this.startResizedUpload(this.getFile(0).ID, 500, 500, SWFUpload.RESIZE_ENCODING.JPEG, 500);
} else {
var progress = new FileProgress(file, this.customSettings.upload_target);
progress.setComplete();
progress.setStatus("All images received.");
progress.toggleCancel(false);
}
} catch (ex) {
this.debug(ex);
}
}
function uploadError(file, errorCode, message) {
var imageName = "error.gif";
var progress;
try {
switch (errorCode) {
case SWFUpload.UPLOAD_ERROR.FILE_CANCELLED:
try {
progress = new FileProgress(file, this.customSettings.upload_target);
progress.setCancelled();
progress.setStatus("Cancelled");
progress.toggleCancel(false);
}
catch (ex1) {
this.debug(ex1);
}
break;
case SWFUpload.UPLOAD_ERROR.UPLOAD_STOPPED:
try {
progress = new FileProgress(file, this.customSettings.upload_target);
progress.setCancelled();
progress.setStatus("Stopped");
progress.toggleCancel(true);
}
catch (ex2) {
this.debug(ex2);
}
case SWFUpload.UPLOAD_ERROR.UPLOAD_LIMIT_EXCEEDED:
imageName = "uploadlimit.gif";
break;
default:
alert(message);
break;
}
addImage("images/" + imageName);
} catch (ex3) {
this.debug(ex3);
}
}
function addImage(src) {
var newImg = document.createElement("img");
newImg.style.margin = "5px";
document.getElementById("thumbnails").appendChild(newImg);
if (newImg.filters) {
try {
newImg.filters.item("DXImageTransform.Microsoft.Alpha").opacity = 0;
} catch (e) {
// If it is not set initially, the browser will throw an error. This will set it if it is not set yet.
newImg.style.filter = 'progid:DXImageTransform.Microsoft.Alpha(opacity=' + 0 + ')';
}
} else {
newImg.style.opacity = 0;
}
newImg.onload = function () {
fadeIn(newImg, 0);
};
newImg.src = src;
}
function fadeIn(element, opacity) {
var reduceOpacityBy = 5;
var rate = 30; // 15 fps
if (opacity < 100) {
opacity += reduceOpacityBy;
if (opacity > 100) {
opacity = 100;
}
if (element.filters) {
try {
element.filters.item("DXImageTransform.Microsoft.Alpha").opacity = opacity;
} catch (e) {
// If it is not set initially, the browser will throw an error. This will set it if it is not set yet.
element.style.filter = 'progid:DXImageTransform.Microsoft.Alpha(opacity=' + opacity + ')';
}
} else {
element.style.opacity = opacity / 100;
}
}
if (opacity < 100) {
setTimeout(function () {
fadeIn(element, opacity);
}, rate);
}
}
/* ******************************************
* FileProgress Object
* Control object for displaying file info
* ****************************************** */
function FileProgress(file, targetID) {
this.fileProgressID = "divFileProgress";
this.fileProgressWrapper = document.getElementById(this.fileProgressID);
if (!this.fileProgressWrapper) {
this.fileProgressWrapper = document.createElement("div");
this.fileProgressWrapper.className = "progressWrapper";
this.fileProgressWrapper.id = this.fileProgressID;
this.fileProgressElement = document.createElement("div");
this.fileProgressElement.className = "progressContainer";
var progressCancel = document.createElement("a");
progressCancel.className = "progressCancel";
progressCancel.href = "#";
progressCancel.style.visibility = "hidden";
progressCancel.appendChild(document.createTextNode(" "));
var progressText = document.createElement("div");
progressText.className = "progressName";
progressText.appendChild(document.createTextNode(file.name));
var progressBar = document.createElement("div");
progressBar.className = "progressBarInProgress";
var progressStatus = document.createElement("div");
progressStatus.className = "progressBarStatus";
progressStatus.innerHTML = " ";
this.fileProgressElement.appendChild(progressCancel);
this.fileProgressElement.appendChild(progressText);
this.fileProgressElement.appendChild(progressStatus);
this.fileProgressElement.appendChild(progressBar);
this.fileProgressWrapper.appendChild(this.fileProgressElement);
document.getElementById(targetID).appendChild(this.fileProgressWrapper);
fadeIn(this.fileProgressWrapper, 0);
} else {
this.fileProgressElement = this.fileProgressWrapper.firstChild;
this.fileProgressElement.childNodes[1].firstChild.nodeValue = file.name;
}
this.height = this.fileProgressWrapper.offsetHeight;
}
FileProgress.prototype.setProgress = function (percentage) {
this.fileProgressElement.className = "progressContainer green";
this.fileProgressElement.childNodes[3].className = "progressBarInProgress";
this.fileProgressElement.childNodes[3].style.width = percentage + "%";
};
FileProgress.prototype.setComplete = function () {
this.fileProgressElement.className = "progressContainer blue";
this.fileProgressElement.childNodes[3].className = "progressBarComplete";
this.fileProgressElement.childNodes[3].style.width = "";
};
FileProgress.prototype.setError = function () {
this.fileProgressElement.className = "progressContainer red";
this.fileProgressElement.childNodes[3].className = "progressBarError";
this.fileProgressElement.childNodes[3].style.width = "";
};
FileProgress.prototype.setCancelled = function () {
this.fileProgressElement.className = "progressContainer";
this.fileProgressElement.childNodes[3].className = "progressBarError";
this.fileProgressElement.childNodes[3].style.width = "";
};
FileProgress.prototype.setStatus = function (status) {
this.fileProgressElement.childNodes[2].innerHTML = status;
};
FileProgress.prototype.toggleCancel = function (show, swfuploadInstance) {
this.fileProgressElement.childNodes[0].style.visibility = show ? "visible" : "hidden";
if (swfuploadInstance) {
var fileID = this.fileProgressID;
this.fileProgressElement.childNodes[0].onclick = function () {
swfuploadInstance.cancelUpload(fileID);
return false;
};
}
};
後臺進行處理的struts2 Action程式碼：
import java.io.File; import java.io.FileInputStream; import java.io.IOException; import java.io.OutputStream; import java.io.PrintWriter; import java.util.Date; import java.util.List; import java.util.Map; import javax.annotation.Resource; import javax.servlet.http.HttpServletResponse; import org.apache.struts2.ServletActionContext; import org.apache.struts2.interceptor.RequestAware; import org.apache.struts2.interceptor.SessionAware; import com.opensymphony.xwork2.ActionSupport; import com.tiantian.tiantian.model.Album; import com.tiantian.tiantian.model.Picture; import com.tiantian.tiantian.model.User; import com.tiantian.tiantian.service.AlbumService; import com.tiantian.tiantian.service.PictureService; import com.tiantian.tiantian.util.ImageSizer; import com.tiantian.tiantian.util.Pager; import com.tiantian.tiantian.util.Util; public class PictureAction extends ActionSupport implements RequestAware,SessionAware { /** * */ private static final long serialVersionUID = 375280356930857300L; private PictureService pictureService; private AlbumService albumService; private int offset; private int maxResults = 20; private int totalRecords; private int totalPage; private Pager<Picture> pager; private Map<String, Object> request; private Map<String, Object> session; private List<Picture> pictures; private List<Album> albums; private int albumId; private Album album; //upload private File Filedata;//swfupload上傳檔案的預設名稱 private String FiledataFileName; private String FiledataContentType; private String albumName; private int id; private Picture pic; private String username; public String execute() { User currentUser = (User)session.get("user"); ifFirstIn(currentUser);//如果使用者是第一次訪問，則給ta新增一個預設的相簿 if (Util.isNull(username)) username = currentUser.getUsername(); albums = albumService.find(username); return SUCCESS; } private void ifFirstIn(User currentUser) { int size = albumService.find(currentUser.getUsername()).size(); if (size == 0) { Album album = new Album(); album.setOwner(currentUser); album.setName("我的相簿"); albumService.add(album); } } public String myPictures() { if (albumId > 0) { album = albumService.findById(albumId); Object obj = request.get("pager.offset"); if (obj != null) offset = (Integer)obj; pager = pictureService.find(offset, maxResults, albumId); pictures = pager.getData(); totalRecords = pager.getTotalCount(); } return "myPictures"; } public String detail() { if (id > 0) { pic = pictureService.find(id); if (pic != null) pictures = pictureService.findAll(pic.getAlbum().getId()); } return "detail"; } public String uploadInput() { if (albumId > 0) album = albumService.findById(albumId); return "uploadInput"; } public void upload() throws IOException { // System.out.println("albumId = "+albumId); if (albumId > 0) { if (Filedata != null) { User currentUser = (User)session.get("user"); Album album = albumService.findById(albumId); String path = ServletActionContext.getServletContext().getRealPath("/images/pics/"+currentUser.getUsername()+"/"+album.getId()); File dir = new File(path); if (!dir.exists()) dir.mkdirs(); String fileName = geneFileName(FiledataFileName); File dest = new File(dir,fileName); Util.upload(Filedata, dest); String picName = FiledataFileName.substring(0,FiledataFileName.lastIndexOf(".")); boolean flag = album.getPictures().size()==0; Picture pic = new Picture(); pic.setUrl(fileName); pic.setName(picName); pic.setAlbum(album); pictureService.add(pic); album.getPictures().add(pic); int id = pic.getId(); if (flag) { int index = FiledataFileName.lastIndexOf("."); String extension = FiledataFileName.substring(index+1); String faceFileName = geneFileName(FiledataFileName); String faceUrl = currentUser.getUsername()+"/"+album.getId()+"/"+geneFileName(FiledataFileName); File dest1 = new File(dir,faceFileName); ImageSizer.resize(Filedata, dest1, 200, extension); album.setFaceUrl(faceUrl); } albumService.update(album); HttpServletResponse response = ServletActionContext.getResponse(); response.setContentType("text/html;charset=utf-8"); PrintWriter out = response.getWriter(); out.print("FILEID:"+id); } } } private String geneFileName(String fileName) { int index = fileName.lastIndexOf("."); String extension = fileName.substring(index); String prefix = Util.formatDate(new Date(), "yyyyMMddHHmmss"); String name = prefix + extension; return name; } public void addAlbum() throws IOException { HttpServletResponse response = ServletActionContext.getResponse(); response.setContentType("text/html;charset=utf-8"); PrintWriter out = response.getWriter(); String outStr = "ok"; if (!Util.isNull(albumName)) { User owner = (User)session.get("user"); Album album = new Album(); album.setName(albumName); album.setOwner(owner); albumService.add(album); } else outStr = "操作失敗！相簿名稱不能為空！"; out.write(outStr); out.flush(); out.close(); } public void delAlbum() throws IOException { HttpServletResponse response = ServletActionContext.getResponse(); response.setContentType("text/html;charset=utf-8"); PrintWriter out = response.getWriter(); String outStr = "ok"; if (albumId > 0) { album = albumService.findById(albumId); albumService.del(albumId); String path = ServletActionContext.getServletContext().getRealPath("/images/pics")+"/"+album.getOwner().getUsername()+"/"+album.getId(); File dest = new File(path); if (dest.exists()) delDerectory(dest); } else { outStr = "操作錯誤，刪除失敗！"; } out.write(outStr); out.flush(); out.close(); } private void delDerectory(File dir) { File[] files = dir.listFiles(); for (File file:files) { file.delete(); } dir.delete(); } public String thumbnail() throws IOException { if (id > 0) { pic = pictureService.find(id); String path = ServletActionContext.getServletContext().getRealPath("/images/pics")+"/"+pic.getAlbum().getOwner().getUsername()+"/"+pic.getAlbum().getId()+"/"+pic.getUrl(); FileInputStream fis = new FileInputStream(path); int len = fis.available(); byte bytes[] = new byte[len]; fis.read(bytes); fis.close(); HttpServletResponse response = ServletActionContext.getResponse(); response.setContentType("image/jpeg"); OutputStream os = response.getOutputStream(); os.write(bytes); os.flush(); os.close(); } return NONE; } public void del() throws IOException { HttpServletResponse response = ServletActionContext.getResponse(); response.setContentType("text/html"); PrintWriter out = response.getWriter(); String outStr = "ok"; if (id > 0) { Picture pic = pictureService.find(id); if (pic != null) { // pic.setAlbum(null); // pictureService.update(pic); pictureService.del(id); String path = ServletActionContext.getServletContext().getRealPath("/images/pics")+"/"+pic.getAlbum().getOwner().getUsername()+"/"+pic.getAlbum().getId()+"/"+pic.getUrl(); File dest = new File(path); if (dest.exists()) dest.delete(); } } else outStr = "操作錯誤，請求的內容不存在！"; out.write(outStr); out.flush(); out.close(); } public PictureService getPictureService() { return pictureService; } @Resource public void setPictureService(PictureService pictureService) { this.pictureService = pictureService; } public int getOffset() { return offset; } public void setOffset(int offset) { this.offset = offset; } public int getMaxResults() { return maxResults; } public void setMaxResults(int maxResults) { this.maxResults = maxResults; } public int getTotalRecords() { return totalRecords; } public void setTotalRecords(int totalRecords) { this.totalRecords = totalRecords; } public int getTotalPage() { return totalPage; } public void setTotalPage(int totalPage) { this.totalPage = totalPage; } public Pager<Picture> getPager() { return pager; } public void setPager(Pager<Picture> pager) { this.pager = pager; } public Map<String, Object> getRequest() { return request; } public void setRequest(Map<String, Object> request) { this.request = request; } public List<Picture> getPictures() { return pictures; } public void setPictures(List<Picture> pictures) { this.pictures = pictures; } public List<Album> getAlbums() { return albums; } public void setAlbums(List<Album> albums) { this.albums = albums; } public Map<String, Object> getSession() { return session; } public void setSession(Map<String, Object> session) { this.session = session; } public AlbumService getAlbumService() { return albumService; } @Resource public void setAlbumService(AlbumService albumService) { this.albumService = albumService; } public int getAlbumId() { return albumId; } public void setAlbumId(int albumId) { this.albumId = albumId; } public File getFiledata() { return Filedata; } public void setFiledata(File filedata) { Filedata = filedata; } public String getFiledataFileName() { return FiledataFileName; } public void setFiledataFileName(String filedataFileName) { FiledataFileName = filedataFileName; } public String getFiledataContentType() { return FiledataContentType; } public void setFiledataContentType(String filedataContentType) { FiledataContentType = filedataContentType; } public String getAlbumName() { return albumName; } public void setAlbumName(String albumName) { this.albumName = albumName; } public Album getAlbum() { return album; } public void setAlbum(Album album) { this.album = album; } public int getId() { return id; } public void setId(String id) { if (!Util.isNull(id)) { try { this.id = Integer.parseInt(id); } catch (NumberFormatException e) { } } } public Picture getPic() { return pic; } public void setPic(Picture pic) { this.pic = pic; } public String getUsername() { return username; } public void setUsername(String username) { this.username = username; } }