HTML5实现多文件的上传示例代码
2015-12-29 10:08
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[转自] http://www.jb51.net/html5/136791.html
主要用到的是<input>的multiple属性
代码如下:
下面是页面的详细代码:
代码如下:
java后台的详细代码:
代码如下:
下面是效果图:
主要用到的是<input>的multiple属性
代码如下:
<input type="file" name="multipleFileUpload" multiple />
下面是页面的详细代码:
代码如下:
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>Solution 4-5: Sending multiple files</title>
</head>
<body>
<form id="myForm"
action="http://10.10.25.31:8080/myupload/UploadPhotoServlet"
ENCTYPE="multipart/form-data" METHOD="POST">
<input type="file" name="multipleFileUpload" multiple /><input
type="submit" value="提交"> <input type="reset" value="重设">
</form>
</body>
</html>
java后台的详细代码:
代码如下:
import java.io.File; import java.io.IOException; import java.text.SimpleDateFormat; import java.util.Calendar; import java.util.Date; import java.util.List; 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; /** * Servlet implementation class UploadPhotoServlet */ public class UploadPhotoServlet extends HttpServlet { private static final long serialVersionUID = 1L; /** * @see HttpServlet#HttpServlet() */ public UploadPhotoServlet() { super(); // TODO Auto-generated constructor stub } /** * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse * response) */ protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { // TODO Auto-generated method stub doPost(request, response); } /** * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse * response) */ @SuppressWarnings("unchecked") protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { String imagePath = "c:\\uploadFile\\Image\\" + getEachDate() + "\\";// 按日期生成文件夹 File uploadPath = new File(imagePath); if (!uploadPath.exists()) { uploadPath.mkdirs(); } File tmp = new File("c:\\tmp\\"); if (!tmp.exists()) { tmp.mkdirs(); } DiskFileItemFactory factory = new DiskFileItemFactory();// 创建磁盘工厂 factory.setRepository(tmp);// 设置文件缓存路径 factory.setSizeThreshold(10 * 1096);// 将文件保存在内存还是磁盘临时文件夹的默认临界值,值为10240,即10kb ServletFileUpload sfu = new ServletFileUpload(factory);// 创建处理工具 sfu.setSizeMax(10 * 1024 * 1024);// 服务器端可以接收的最大文件大小,-1表示无上限 String fileName = null; try { List<FileItem> list = sfu.parseRequest(request);// 解析 if (list.size() < 1) { return; } for (int j = 0; j < list.size(); j++) { FileItem item = list.get(j); fileName = item.getName(); if (fileName.equals("")) { request.getRequestDispatcher("/com/visualizerPhoto.jsp") .forward(request, response); return; } int pos = fileName.lastIndexOf(".");// 取图片文件格式 if (pos > 0) { Date date = new Date(); fileName = imagePath + date.getTime() + fileName.substring(pos); } System.out.println("item:" + item); item.write(new File(fileName));// 写到磁盘 } } catch (FileUploadException e) { e.printStackTrace(); } catch (Exception e) { e.printStackTrace(); } } // 13-11-15 public static String getEachDate() { Calendar cal = Calendar.getInstance(); cal.add(Calendar.DATE, 0); String yesterday = new SimpleDateFormat("yyyy-MM-dd ").format(cal .getTime()); String[] dates = yesterday.split("-"); String realDate = dates[0].substring(2, 4) + "-" + dates[1] + "-" + dates[2]; return realDate.trim(); } }
下面是效果图:
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