从一个异常引起的，TypeError: $("#file_upload").uploadify is not a function，其实就是使用uploadify组件上传文件，但是一直报莫名其妙的错误。网上众说纷纭…在此记录并上传调试好的源码。
【1】uploadify组件
uploadify官网：http://www.uploadify.com/ 但是从这里下载好像付费，文章末尾会附上源码和插件下载地址。
页面源码
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>UploadiFive Test</title>
<link rel="stylesheet" type="text/css" href="/UeditorWeb/uploadifive.css"/>
<script type="text/javascript" src="/UeditorWeb/jquery.min.js"></script>
<script type="text/javascript" src="/UeditorWeb/jquery.uploadifive.min.js"></script>
<style type="text/css">
body {
font: 13px Arial, Helvetica, Sans-serif;
}
.uploadifive-button {
float: left;
margin-right: 10px;
}
#queue {
border: 1px solid #E5E5E5;
height: 177px;
overflow: auto;
margin-bottom: 10px;
padding: 0 3px 3px;
width: 300px;
}
</style>
</head>
<body>
<form>
<div id="queue"></div>
<input id="file_upload" name="file_upload" type="file" multiple="true">
<a style="position: relative; top: 8px;" href="javascript:$('#file_upload').uploadifive('upload')">Upload Files</a>
</form>
<script type="text/javascript">
$(function() {
$('#file_upload').uploadifive({
'auto' : false,
'formData' : {
'timestamp' : '111',
'token' : '111'
},
'queueID' : 'queue',
'uploadScript' : '/UeditorWeb/upload',
'onUploadComplete' : function(file, data) { console.log(data); }
});
});
</script>
</body>
</html>
【2】修改后的Huploadify组件
页面源码
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
<link rel="stylesheet" type="text/css" href="/UeditorWeb/Huploadify.css"/>
<script type="text/javascript" src="/UeditorWeb/jquery.js"></script>
<script type="text/javascript" src="/UeditorWeb/jquery.Huploadify.js"></script>
<style type="text/css">
</style>
<script type="text/javascript">
$(function(){
$('#upload').Huploadify({
auto:true,
fileTypeExts:'*.jpg;*.png;*.exe',
multi:true,
formData:{pid:'portal',token:'portal',filedesc:''},
fileSizeLimit:9999,
showUploadedPercent:true,//是否实时显示上传的百分比，如20%
showUploadedSize:true,
removeTimeout:9999999,
uploader : '/UeditorWeb/upload',
onUploadStart:function(){
//alert('开始上传');
},
onInit:function(){
//alert('初始化');
},
onUploadComplete:function(){
//alert('上传完成');
},
onUploadSuccess: function(file, data, response) {
alert(data);
},
onDelete:function(file){
console.log('删除的文件：'+file);
console.log(file);
}
});
});
</script>
</head>
<body>
<div id="upload"></div>
</body>
</html>每次选择文件都会直接上传，下面会有一个进度条示意。
后台对应代码
就是很常见的文件上传。
package com.web.servlet;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.text.DecimalFormat;
import java.util.List;
import java.util.UUID;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.FileUploadBase;
import org.apache.commons.fileupload.ProgressListener;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
public class FileUploadServlet extends HttpServlet {
/**
*
*/
private static final long serialVersionUID = 8382832509729035231L;
// private ShFileDataService shFileDataService = SpringContextHolder.getBean("shFileDataService");
/**
* Constructor of the object.
*/
public FileUploadServlet() {
super();
}
/**
* Destruction of the servlet. <br>
*/
public void destroy() {
super.destroy(); // Just puts "destroy" string in log
// Put your code here
}
/**
* The doGet method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to get.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
*/
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
doPost(request,response);
}
/**
* The doPost method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to post.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
*/
@Override
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
String fileSize = "";
String savePath =
this.getServletContext().getRealPath("/WEB-INF/upload");
String tempPath =
this.getServletContext().getRealPath("/WEB-INF/temp");
File tmpFile = new File(tempPath);
if (!tmpFile.exists()) {
tmpFile.mkdir();
}
String message = "";
try {
DiskFileItemFactory factory = new DiskFileItemFactory();
factory.setSizeThreshold(1024 * 100);
factory.setRepository(tmpFile);
ServletFileUpload upload = new ServletFileUpload(factory);
upload.setProgressListener(new ProgressListener() {
public void update(long pBytesRead, long pContentLength,
int arg2) {
}
});
upload.setHeaderEncoding("UTF-8");
if (!ServletFileUpload.isMultipartContent(request)) {
return;
}
upload.setFileSizeMax(1024 * 1024 * 5);
upload.setSizeMax(1024 * 1024 * 10);
List<FileItem> list = upload.parseRequest(request);
for (FileItem item : list) {
//if (item.isFormField()) {
//String name = item.getFieldName();
//String value = item.getString("UTF-8");
// value = new
// } else {// ���fileitem�з�װ�����ϴ��ļ�
String filename = item.getName();
Long filesizeNum = (Long) item.getSize();
if (filesizeNum > 0) {
DecimalFormat df = new DecimalFormat("####.00");
float size = (float) filesizeNum / 1024;
fileSize = df.format(size);
}
if (filename == null || filename.trim().equals("")) {
continue;
}
filename = filename.substring(filename
.lastIndexOf("\\") + 1);
String fileExtName = filename.substring(filename
.lastIndexOf(".") + 1);
InputStream in = item.getInputStream();
String saveFilename = makeFileName(filename);
String realSavePath = makePath(saveFilename, savePath);
FileOutputStream out = new FileOutputStream(
realSavePath + "\\" + saveFilename);
byte buffer[] = new byte[1024];
int len = 0;
while ((len = in.read(buffer)) > 0) {
out.write(buffer, 0, len);
}
out.close();
in.close();
String href = realSavePath+"\\"+saveFilename;
StringBuilder resultHtml = new StringBuilder();
resultHtml.append(" <li id='file_SWFUpload_5_0' style='font-size: 16px;margin-left: 25px;padding: 5px;'> ");
resultHtml.append(" <span class='attch-name'>"+ filename);
resultHtml.append(" <span class='attch-size'>"
+ fileSize
+ "KB</span><span class='attch-state' style='color:#c1c1c1'>(���)</span>");
resultHtml.append(" <a style='color: #178be2' target='_blank' href='"+href+"' class='attch-dload'>����</a>");
// resultHtml.append(" <a style='color: #178be2' id='"+shFileData.getFileId()+"' class='attch-delete'>ɾ��</a>");
resultHtml.append(" </li>");
response.getWriter().write(resultHtml.toString());
//}
}
} catch (FileUploadBase.FileSizeLimitExceededException e) {
request.setAttribute("message", "the file is too big");
return;
} catch (FileUploadBase.SizeLimitExceededException e) {
request.setAttribute("message", "the file is too big");
return;
} catch (Exception e) {
message = "file upload fail";
request.setAttribute("message", "file upload fail");
}
request.setAttribute("message", message);
}
/**
* Initialization of the servlet. <br>
*
* @throws ServletException if an error occurs
*/
public void init() throws ServletException {
}
private String makeFileName(String filename) { // 2.jpg
return UUID.randomUUID().toString() + "_" + filename;
}
private String makePath(String filename, String savePath) {
String dir = savePath;
File file = new File(dir);
if (!file.exists()) {
file.mkdirs();
}
return dir;
}
}项目和组件下载地址
下载内容示意：
