1.准备材料：下载jquery.uploadify上传js
注意：这个上传在firefox下会出现问题如果你在项目中加了拦截器，因为session会丢失，所以你可以传参的时候带上你所需要的条件，在拦截器可以不作处理这个上传的servlet，也就是判断url，跳过这个servlet的拦截，或者用其他的方法进行判定，比如根据传过来的参数判断是不是有该用户什么的，这就看自己怎么处理，
一定要out.print(data);否则会认为上传不成功，因为前台收不到返回值，这个data可以返回你所需要的参数，然后jsp页面进行处理
'method' : 'GET',
'scriptData' : {'userid':'<%=userID%>'},//传参的时候网上说method要是get，这个我没有测试，用的时候自己调试一下，我这边已经成功了，需要源代码项目的可以留言+邮箱
'scriptData' : {'userid':'<%=userID%>'},//传参的时候网上说method要是get，这个我没有测试，用的时候自己调试一下，我这边已经成功了，需要源代码项目的可以留言+邮箱
有些参数可以看官网上的API文档
2、jsp代码
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8" contentType="text/html; charset=UTF-8" %>
<%@ include file="/commons/taglibs.jsp"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%
String rootpath = request.getContextPath();
long userID = (Long)request.getSession().getAttribute("userID");
//上传url
String sessionId = request.getSession().getId();
StringBuffer uploadUrl = new StringBuffer("http://");
uploadUrl.append(request.getHeader("Host"));
uploadUrl.append(request.getContextPath());
uploadUrl.append("/servlet/UploadSwfTmpPic?sessionId="+sessionId);
//上传url--END
%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>上传</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0"> <!-- 样式及js加载 这儿得注意引入的路径是否正确应用的时候自己多加小心--> <link href="./style/uploadify/default.css" rel="stylesheet" type="text/css" />
<link href="./style/uploadify/uploadify.css" rel="stylesheet" type="text/css" />
<script language="javascript" src="<c:url value="/scripts/jquery.js"/>"></script>
<script type="text/javascript" src="./js/uploadify/swfobject.js"></script>
<script type="text/javascript" src="./js/uploadify/jquery.uploadify.v2.0.3.min.js"></script>
<script type="text/javascript">
$(document).ready(function() { $("#showPic").hide();
$("#uploadify").uploadify({
'uploader' : './js/uploadify/uploadify.swf',
'script' : '<%=uploadUrl.toString()%>',//后台处理的请求
'cancelImg' : './images/cancel.png', //每个文件后面的取消按钮
'folder' : 'uploads',//您想将文件保存到的路径
'queueID' : 'fileQueue',//与下面的id对应
'queueSizeLimit' : 50,
'fileDesc' : '文件格式(*.png;*.jpg;*.gif)',
'fileExt' : '*.png;*.jpg;*.gif', //控制可上传文件的扩展名，启用本项时需同时声明fileDesc
'auto' : true, //是否自动提交
'multi' : false, //是否允许上传多个文件
'simUploadLimit' : 1, //允许同时上传的个数为1
'rollover' : false,//鼠标移到浏览按钮的反应
'method' : 'GET',
'scriptData' : {'userid':'<%=userID%>'},
'buttonText' : 'BROWSE',//BROWSE
'buttonImg' : './js/uploadify/uploadify.jpg',
'hideButton' : true,
'wmode' : 'transparent',
'onComplete': function(event, queueID, fileObj,response,data) {
//后台servlet一定要有返回值，否则会认为不成功，上传进度条也会不消失
if(response != -1){
$("#showPic").show();
var res = response.split("^");
path_pic = res[0];
height_y = res[1];
width_y = res[2];
$('#oimgW').html(width_y);
$('#oimgH').html(height_y);
urlallpic = "<%=rootpath%>/uploadfile/tmpdir/"+path_pic;
}else{
alertWbox($(this), "错误提示", "头像上传失败。", 200, null, 238);
}
},
'onSelect': function(e, queueId, fileObj)
{
//fileQueue
document.getElementById("fileQueue").style.display="";
},
'onError' : function(event, queueID, fileObj)
{
// alert("文件:" + fileObj.name + " 上传失败");
alertWbox($(this), "错误提示", "头像上传失败。", 200, null, 238);
} , 'onAllComplete' : function(event, queueID, fileObj,response,data) {
//所有上传成功的返回返回处理
if(urlallpic != "" ){
document.getElementById("fileQueue").style.display="none";
document.getElementById("showPic").style.display="";
document.getElementById("ferret").src = urlallpic;
document.getElementById("minImg").src = urlallpic;//
// setTimeout("readyPic();",5000);
imgReady(urlallpic, function () {
initcutpic();
});
}
}
})
}); </script>
</head>
<body>
<div id="uploadJqFy">
<div id="fileQueue" style="display:none;"></div>
<input type="file" name="uploadify" id="uploadify" />
<p>仅支持jpg、png、gif格式的图片</p>
</div> </body>
</html>
3.web.xml
<servlet>
<servlet-name>uploadCutpic</servlet-name>
<servlet-class>com.ccsuntel.linkupuser.servlet.user.UploadTmpPhotoServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>uploadCutpic</servlet-name>
<url-pattern>/servlet/UploadSwfTmpPic</url-pattern>
</servlet-mapping>
4.servlet代码
package com.ccsuntel.linkupuser.servlet.user; import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map; import javax.imageio.ImageIO;
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.FileUploadException;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload; import com.ccsuntel.linkupuser.base.Config;
import com.ccsuntel.linkupuser.base.Constant;
import com.ccsuntel.linkupuser.base.dispatch.Base;
import com.ccsuntel.linkupuser.util.Tool;
import com.ccsuntel.linkupuser.util.UploadTool; public class UploadTmpPhotoServlet extends HttpServlet { @Override
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException { } @Override
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
DiskFileItemFactory factory = new DiskFileItemFactory();
// 设置内存缓冲区，超过后写入临时文件 factory.setSizeThreshold(10240000);
// 设置临时文件存储位置 String base = Config.getInstance().getWorkGtmpPath();//this.getServletContext().getRealPath("/")+"files"; File file = new File(base);
if(!file.exists())
file.mkdirs();
factory.setRepository(file);
ServletFileUpload upload = new ServletFileUpload(factory);
// 设置单个文件的最大上传值 upload.setFileSizeMax(10002400000l);
// 设置整个request的最大值 upload.setSizeMax(10002400000l);
upload.setHeaderEncoding("UTF-8");
request.setCharacterEncoding("utf-8");
response.setCharacterEncoding("utf-8");
PrintWriter out = response.getWriter();
try {
List<?> items = upload.parseRequest(request);
FileItem item = null;
String tpmFilePathName = null;
String savePath = Config.getInstance().getLinkfilesavePath();
Map<String,String> fileNames = new HashMap<String, String>();
for (int i = 0 ;i < items.size(); i++){
item = (FileItem) items.get(i);
// 保存文件 if (!item.isFormField() && item.getName().length() > 0) {
fileNames.put("oldName", item.getName());
String suffixName = item.getName().substring(item.getName().lastIndexOf("."));
String newName=UploadTool.createPhotoID()+suffixName;
fileNames.put("newName", newName);
fileNames.put("fileSize", UploadTool.FormetFileSize(item.getSize()));
//System.out.println(item.getName()+"=="+UploadTool.createPhotoID()+suffixName+"=="+UploadTool.FormetFileSize(item.getSize())+"savePath"+savePath); tpmFilePathName = base + newName;//File.separator item.write(new File(tpmFilePathName));
//UploadTool.removeFile(tpmFilePathName); BufferedImage bufImg = ImageIO.read(new File(tpmFilePathName));
//System.out.print("======"+bufImg.getHeight()+"====="+bufImg.getWidth());
//数据库操作，包图片的路径及其相应的信息保存到数据库，
out.print(newName+"^"+bufImg.getHeight()+"^"+bufImg.getWidth());
}
} //Map<String,String> fileNames = UploadTool.WorkGroupFileUpload(request, Config.getInstance().getLinkfiletmpPath(), Config.getInstance().getLinkfilesavePath()); } catch (FileUploadException e) {
out.print(-1);
e.printStackTrace();
} catch (Exception e) {
out.print(-1);
e.printStackTrace();
}finally{
out.flush();
out.close();
} } }