jQuery plupload 的使用
Plupload 是一个Web浏览器上的界面友好的文件上传模块，可显示上传进度、图像自动缩略和上传分块。可同时上传多文件，拖拽，图像缩略等功能。
docs:http://www.plupload.com/examples/core
github: https://github.com/zhouyongtao/my-plupload
HTML:
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>plupload示例</title>
<link rel="stylesheet" href="${pageContext.request.contextPath}/jslib/plupload_1_5_7/plupload/js/jquery.plupload.queue/css/jquery.plupload.queue.css" type="text/css"></link>
<script type="text/javascript" src="${pageContext.request.contextPath}/jslib/jquery-1.8.3.js"></script>
<script type="text/javascript" src="${pageContext.request.contextPath}/jslib/plupload_1_5_7/plupload/js/plupload.full.js"></script>
<script type="text/javascript" src="${pageContext.request.contextPath}/jslib/plupload_1_5_7/plupload/js/jquery.plupload.queue/jquery.plupload.queue.js"></script>
<script type="text/javascript" src="${pageContext.request.contextPath}/jslib/plupload_1_5_7/plupload/js/i18n/zh-CN.js"></script>
<script type="text/javascript">
$(function() {
$("#uploader").pluploadQueue({
runtimes : 'html5,flash,silverlight',//设置运行环境，会按设置的顺序，可以选择的值有html5,gears,flash,silverlight,browserplus,html4
flash_swf_url : '${pageContext.request.contextPath}/jslib/plupload_1_5_7/plupload/js/plupload.flash.swf',// Flash环境路径设置
silverlight_xap_url : '${pageContext.request.contextPath}/jslib/plupload_1_5_7/plupload/js/plupload.silverlight.xap',//silverlight环境路径设置
url : '${pageContext.request.contextPath}/UploadServlet',//上传文件路径
max_file_size : '3gb',//100b, 10kb, 10mb, 1gb
chunk_size : '1mb',//分块大小，小于这个大小的不分块
unique_names : true,//生成唯一文件名
// 如果可能的话，压缩图片大小
// resize : { width : 320, height : 240, quality : 90 },
// 指定要浏览的文件类型
filters : [ {
title : 'Image files',
extensions : 'jpg,gif,png'
}, {
title : 'Zip files',
extensions : 'zip,7z,rar'
} ],
init : {
FileUploaded : function(up, file, info) {//文件上传完毕触发
console.info(up);
console.info(file);
console.info(info);
var response = $.parseJSON(info.response);
if (response.status) {
$('#f1').append('<input type="hidden" name="fileUrl" value="'+response.fileUrl+'"/>');
$('#f1').append('<input type="hidden" name="fileName" value="'+file.name+'"/><br/>');
}
}
}
});
// 客户端表单验证
$('form').submit(function(e) {
var uploader = $('#uploader').pluploadQueue();
if (uploader.files.length > 0) {// 判断队列中是否有文件需要上传
uploader.bind('StateChanged', function() {// 在所有的文件上传完毕时，提交表单
if (uploader.files.length === (uploader.total.uploaded + uploader.total.failed)) {
$('form')[0].submit();
}
});
uploader.start();
} else {
alert('请选择至少一个文件进行上传！');
}
return false;
});
});
</script>
</head>
<body>
<form id="f1" action="${pageContext.request.contextPath}/DemoAction" method="post">
<table border="1">
<tr>
<td colspan="2">
<div id="uploader">您的浏览器没有安装Flash插件，或不支持HTML5！</div>
<!--
<button onclick="$('#uploader').pluploadQueue().start();">开始上传</button>
<button onclick="$('#uploader').pluploadQueue().stop();">停止上传</button>
-->
</td>
</tr>
<tr>
<th>姓名</th>
<td><input name="name" value="Irving" /></td>
</tr>
<tr>
<th>密码</th>
<td><input name="pwd" value="123456" /></td>
</tr>
</table>
<button type="submit">提交表单</button>
</form>
</body>
</html>
JAVA:
package sy.util.base;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.ResourceBundle;
import java.util.UUID;
import javax.servlet.ServletConfig;
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 org.apache.commons.io.FileUtils;
import org.apache.commons.io.FilenameUtils;
import com.alibaba.fastjson.JSON;
public class UploadServlet extends HttpServlet {
String uploadPath;
private static final ResourceBundle bundle = ResourceBundle
.getBundle("config");
public UploadServlet() {
super();
}
protected void doGet(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
doPost(request, response);
}
protected void doPost(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
response.setCharacterEncoding("UTF-8");
Integer chunk = null;// 分割块数
Integer chunks = null;// 总分割数
String tempFileName = null;// 临时文件名
String newFileName = null;// 最后合并后的新文件名
BufferedOutputStream outputStream = null;
if (ServletFileUpload.isMultipartContent(request)) {
try {
DiskFileItemFactory factory = new DiskFileItemFactory();
factory.setSizeThreshold(1024);
// factory.setRepository(new File(repositoryPath));// 设置临时目录
ServletFileUpload upload = new ServletFileUpload(factory);
upload.setHeaderEncoding("UTF-8");
// upload.setSizeMax(5 * 1024 * 1024);// 设置附件最大大小，超过这个大小上传会不成功
List<FileItem> items = upload.parseRequest(request);
for (FileItem item : items) {
if (item.isFormField()) {// 是文本域
if (item.getFieldName().equals("name")) {
tempFileName = item.getString();
// System.out.println("临时文件名：" + tempFileName);
} else if (item.getFieldName().equals("chunk")) {
chunk = Integer.parseInt(item.getString());
// System.out.println("当前文件块：" + (chunk + 1));
} else if (item.getFieldName().equals("chunks")) {
chunks = Integer.parseInt(item.getString());
// System.out.println("文件总分块：" + chunks);
}
} else {// 如果是文件类型
if (tempFileName != null) {
String chunkName = tempFileName;
if (chunk != null) {
chunkName = chunk + "_" + tempFileName;
}
File savedFile = new File(uploadPath, chunkName);
item.write(savedFile);
}
}
}
newFileName = UUID.randomUUID().toString().replace("-", "")
.concat(".")
.concat(FilenameUtils.getExtension(tempFileName));
if (chunk != null && chunk + 1 == chunks) {
outputStream = new BufferedOutputStream(
new FileOutputStream(new File(uploadPath,
newFileName)));
// 遍历文件合并
for (int i = 0; i < chunks; i++) {
File tempFile = new File(uploadPath, i + "_"
+ tempFileName);
byte[] bytes = FileUtils.readFileToByteArray(tempFile);
outputStream.write(bytes);
outputStream.flush();
tempFile.delete();
}
outputStream.flush();
}
Map<String, Object> m = new HashMap<String, Object>();
m.put("status", true);
m.put("fileUrl", bundle.getString("uploadPath") + "/"
+ newFileName);
response.getWriter().write(JSON.toJSONString(m));
} catch (FileUploadException e) {
e.printStackTrace();
Map<String, Object> m = new HashMap<String, Object>();
m.put("status", false);
response.getWriter().write(JSON.toJSONString(m));
} catch (Exception e) {
e.printStackTrace();
Map<String, Object> m = new HashMap<String, Object>();
m.put("status", false);
response.getWriter().write(JSON.toJSONString(m));
} finally {
try {
if (outputStream != null)
outputStream.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
@Override
public void init(ServletConfig config) throws ServletException {
//System.out.println(FileUtils.getTempDirectoryPath());
uploadPath = config.getServletContext().getRealPath(
bundle.getString("uploadPath"));
File up = new File(uploadPath);
if (!up.exists()) {
up.mkdir();
}
}
}
Refer:
http://www.51aspx.com/code/pluploadNetDemo
http://weblog.west-wind.com/posts/2013/Mar/12/Using-plUpload-to-upload-Files-with-ASPNET
http://blog.cdeutsch.com/2011/02/plupload-and-aspnet-mvc3.html
http://blog.cdeutsch.com/2011/02/plupload-and-aspnet-mvc3.html
