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
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="" %>
- <%
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">
-
-
-
-
- ">
-
- <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>
-
- </body>
- </html>
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>
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 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();
- }
-
- }
- }
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