SWFUpload简单使用样例 Java版（JSP）

SWFUpload官方的样例都是PHP的，在这里提供一个Java版的最简单的使用样例，使用JSP页面完毕全部操作。

实现上传，分为三步：

1、JavaScript设置SWFUpload部分（与官方样例类似）：

 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",   //此处也能够改动成你想限制的类型，比方：*.doc;*.wpd;*.pdf
file_types_description : "Image Files",
file_upload_limit : "0",
file_queue_limit : "1",
// 事件处理设置（全部的自己定义处理方法都在handler.js文件中）
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_ 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：

<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：

 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称
                  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();
  }
 }