flex上传文件

来源：互联网发布：linux 进程退出日志编辑：程序博客网时间：2024/06/02 07:37

1.flex端

<mx:Button id="upload" label="上传文件" click="ExternalInterface.call('openUpload');"/>

2后台

2.1 openUpload是后台的js脚本(jsp)

function openUpload(){
var url="/OA/service/upload.jsp";
newWin=jscomNewWinOpenBySize(url,"文件上传",350,150);
}

upload.jsp
<%@ include file="/service/common.jsp"%>
<%@ page contentType="text/html; charset=gbk" language="java"%>
<html>
<head>
<title>附件上传</title>
<script type="text/javascript" language="javascript">
addEventSimple(window,"load",initial);
function initial(){
o4lukaForm=document.getElementById("lukaForm");
o4myFile1=document.getElementById("myFile1");
o4asslb=document.getElementById("asslb");
o4ahigbg=document.getElementById("ahigbg");
if(o4myFile1.value!=""){
o4lukaForm.submit();
}else{
o4asslb.style.display="block";
}

}

function getFileSize(filePath){
o4asslb=document.getElementById("asslb");
o4asslb.style.display="none";
var image=new Image();

    image.dynsrc=filePath;
    //alert("你选择的文件大小是：" + image.fileSize/1024 + "K");
o4abiglb=document.getElementById("abiglb");
o4ahigbg=document.getElementById("ahigbg");
o4abiglb.style.display="block";
o4abiglb.innerHTML="你选择的文件大小是：" + image.fileSize/1024 + "K";
o4ahigbg.value=image.fileSize/1024+"K";
}

</script>
</head>
<body>
<table width="100%">
<tr height="30">
    <td height="27" colspan="2" align="left" valign="middle">请选择附件(多文件时先压缩)</td>
</tr>
<form name="lukaForm" enctype="multipart/form-data" action="<%=webAppPath%>/uploadFiles.do" method="post">
<input type="hidden" name="method" value="toupload">
<tr height="30">
    <td height="20" colspan="2" align="left" valign="middle"><label id="asslb" style="display:none; width:auto;"><font color="#FF0000">附件为空</font></label><label id="abiglb" style="display:none; width:auto; font-size:12px; color:#009900"></label><input type="hidden" id="ahigbg" name="ahigbg" value=""/></td>
</tr>
<tr height="30">
       <td height="27" align="left" valign="middle"><input type="file" name="myFile1" class="input" style="width:90%" onChange="getFileSize(this.value)"/></td>
    </tr>
    </form>
<tr>
      <td height="27" colspan="5" align="center"><input type="submit" onClick="initial();" value="上传"></td>
</tr>
</table>

</body>
</html>

2.2 交互代码(action)

/**
* 文件上传
*
* @param mapping
* @param form
* @param request
* @param response
* @return
* @throws Exception
*/
public ActionForward toupload(ActionMapping mapping, ActionForm form,
   HttpServletRequest request, HttpServletResponse response)
   throws Exception {
  log.info("文件开始上传---EnterUploadFilesAction(toupload)-----------");
  UploadOneActionForm uploadForm = (UploadOneActionForm) form;
  ServletContext servletContext = this.getServlet().getServletContext();
  UploadTool uploadTool = new UploadTool();
  UploadFiles condition = null;
  // 文件所有者
  UserSession userSession = (UserSession) request.getSession()
    .getAttribute("userSession");
  String loadowner = userSession.getUsername();

  // 文件的大小
  String loadsize = request.getParameter("ahigbg");
  log.info("文件大小为：================" + loadsize);

  boolean isMyFile = false;
  boolean exit = false;
  String[] fileResult = new String[2];
  FormFile myfile = uploadForm.getMyFile1();

  if (myfile != null && myfile.getFileName().length() > 0
    && myfile.getFileSize() < 30 * 1000 * 1000) {
   log.info("Enter isMyFile = true");
   isMyFile = true;
  }

  if (isMyFile)
   // fileResult = uploadTool.upload4web(servletContext, myfile,
   // UploadTool.DIS_UP);
   fileResult = uploadTool.uploadFiles(servletContext, myfile,
     UploadTool.DIS_UP);

  if (isMyFile) {
   String filename = fileResult[0];
   String filepath = fileResult[1];
   log.info("filename: " + filename);
   log.info("filepath" + filepath);
   // 所有的文件
   UploadFiles uploadfiles = uploadService
     .getFilesByloadname(filename);
   if (uploadfiles == null) {
    request.setAttribute("msg", "你所选择的文件上传成功");
    String path = this.getServlet().getServletContext()
      .getRealPath("/")
      + UploadTool.UPLOAD_BASE + UploadTool.DIS_UP + filename;
    log.info("path:==================" + path);
    UploadFiles item = null;
    item = new UploadFiles();
    item.setLoadname(filename);
    item.setLoadflag("F");
    item.setLoadowner(loadowner);
    item.setLoadsize(loadsize);
    item.setLoadtime(LukaTool.date(2));
    item.setLoadpath(path);
    condition = new UploadFiles();
    condition = this.uploadService.uploadFile(item);

    log.info("文件上传成功===================");
   }else{
    request.setAttribute("msg", "该文件存在请更换文件名");
   }
  }
  return mapping.findForward("loadfiles");
}

文件上传的通用类

/**
* 上传文件
*
* @param context
* @param file
* @param module
* @return
*/
public String[] uploadFiles(ServletContext context, FormFile file,
   String module) {
  String[] result = new String[2];
  result[0] = file.getFileName();
  result[1] = file.getFileName();
  // 准备路径及文件名
  StringBuffer sb = new StringBuffer();
  sb.append(context.getRealPath("/"));
  sb.append(UploadTool.UPLOAD_BASE);
  sb.append(module);
  sb.append("/");
  sb.append(result[1]);

  InputStream in;
  try {
   in = file.getInputStream();

   OutputStream out = new FileOutputStream(sb.toString());
   // now write data into disk
   int bytesRead = 0;
   byte[] buffer = new byte[8192];
   while ((bytesRead = in.read(buffer, 0, 8192)) != -1) {
    out.write(buffer, 0, bytesRead);
   }
   // donot forget to close the streams : )
   in.close();
   out.close();

  } catch (FileNotFoundException e) {
   e.printStackTrace();
  } catch (IOException e) {
   e.printStackTrace();
  }
  return result;
}