SWFUpload简单使用例子 Java版（JSP）

SWFUpload官方的例子都是PHP的，在这里提供一个Java版的最简单的使用例子，使用JSP页面完成所有操作。

实现上传，分为三步：

1、JavaScript设置SWFUpload部分（与官方例子类似）：

Js代码


var upload;

window.onload = function() {

upload = new SWFUpload({

// 处理文件上传的url

upload_url: "${pageContext.request.contextPath}/swfupload/example.jsp?upload=1",

// 上传文件限制设置

file_size_limit : "10240", // 10MB

file_types : "*.jpg;*.gif;*.png", //此处也可以修改成你想限制的类型，比如：*.doc;*.wpd;*.pdf

file_types_description : "Image Files",

file_upload_limit : "0",

file_queue_limit : "1",

// 事件处理设置（所有的自定义处理方法都在handler.js文件里）

file_dialog_start_handler : fileDialogStart,

file_queued_handler : fileQueued,

file_queue_error_handler : fileQueueError,

file_dialog_complete_handler : fileDialogComplete,

upload_start_handler : uploadStart,

upload_progress_handler : uploadProgress,

upload_error_handler : uploadError,

upload_success_handler : uploadSuccess,

upload_complete_handler : uploadComplete,

// 按钮设置

button_image_url : "swfupload/xpbutton.png", // 按钮图标

button_placeholder_id : "spanButtonPlaceholder",

button_width: 61,

button_height: 22,

// swf设置

flash_url : "swfupload/swfupload.swf",

custom_settings : {

progressTarget : "fsUploadProgress",

cancelButtonId : "btnCancel"

},

// Debug 设置

debug: false

});

}

2、页面显示部分：

Html代码


<div class="flash" id="fsUploadProgress"></div>

<div style="padding-left: 5px;">

<span id="spanButtonPlaceholder"></span>

<input id="btnCancel" type="button" value="取消" onclick="cancelQueue(upload);"

disabled="disabled" style="margin-left: 2px; height: 22px; font-size: 8pt;" />

</div>

3、Java处理文件上传部分：

Java代码


String uploadSign = request.getParameter("upload");

String rootPath = request.getParameter("rootPath");

String path = request.getParameter("path");

if(rootPath == null) rootPath = "";

rootPath = rootPath.trim();

if(rootPath.equals("")){

rootPath = application.getRealPath("/swfupload/files");

}

if(path == null) {

path = rootPath;

}else{

path = new String(Base64.decodeBase64(path.getBytes()));

}

//上传操作

if(null != uploadSign && !"".equals(uploadSign)){

FileItemFactory factory = new DiskFileItemFactory();

ServletFileUpload upload = new ServletFileUpload(factory);

//upload.setHeaderEncoding("UTF-8");

try{

List items = upload.parseRequest(request);

if(null != items){

Iterator itr = items.iterator();

while(itr.hasNext()){

FileItem item = (FileItem)itr.next();

if(item.isFormField()){

continue;

}else{

//以当前精确到秒的日期为上传的文件的文件名

SimpleDateFormat sdf=new SimpleDateFormat("yyyyMMddkkmmss");

String type = item.getName().split("\\.")[1];//获取文件类型

File savedFile = new File(path,sdf.format(new Date())+"."+type);

item.write(savedFile);

}

}

}

}catch(Exception e){

e.printStackTrace();

}

}