编辑jsp页面获取文件
1 <html> 2 ??<head> 3 ????<base href="<%=basePath%>"> 4 ?????5 ????<title>My JSP ‘upload.jsp‘ starting page</title> 6 ?????7 ????<meta http-equiv="pragma" content="no-cache"> 8 ????<meta http-equiv="cache-control" content="no-cache"> 9 ????<meta http-equiv="expires" content="0"> ???10 ????<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">11 ????<meta http-equiv="description" content="This is my page">12 ????<!--13 ????<link rel="stylesheet" type="text/css" href="styles.css">14 ????-->15 16 ??</head>17 ??18 ??<body>19 ????<form action="upload1" method="post" enctype="Multipart/form-data">20 ????????file:<input type="file" name="upload">21 ????????<input type="submit" value="上传">22 ????</form>23 ??</body>24 </html>
servlet上传：
1 import java.io.File; 2 import java.io.IOException; 3 import java.io.PrintWriter; 4 import java.util.List; 5 import java.util.UUID; 6 ?7 import javax.servlet.ServletException; 8 import javax.servlet.annotation.MultipartConfig; 9 import javax.servlet.annotation.WebServlet;10 import javax.servlet.http.HttpServlet;11 import javax.servlet.http.HttpServletRequest;12 import javax.servlet.http.HttpServletResponse;13 14 import org.apache.commons.fileupload.FileItem;15 import org.apache.commons.fileupload.FileUploadException;16 import org.apache.commons.fileupload.disk.DiskFileItemFactory;17 import org.apache.commons.fileupload.servlet.ServletFileUpload;18 @WebServlet("/upload1")19 20 public class Upload1 extends HttpServlet {21 22 ????public void doGet(HttpServletRequest request, HttpServletResponse response)23 ????????????throws ServletException, IOException {24 ????????????doPost(request, response);25 ????}26 27 ????public void doPost(HttpServletRequest request, HttpServletResponse response)28 ????????????throws ServletException, IOException {29 ????????/**30 ?????????* ???1、创建文件项工厂31 ?????????*/32 ????????33 ????????DiskFileItemFactory factory = new DiskFileItemFactory();34 ????????/**35 ?????????* ???2、创建解析请求 数据的ServletFileUpload对象36 ?????????*/37 ????????ServletFileUpload upload = new ServletFileUpload(factory); ???????38 ????????try {39 ????????/**40 ?????????* ??3、解析请求数据 返回FileItem 列表41 ?????????*/42 ????????????List<FileItem> list = upload.parseRequest(request);43 ????????/**44 ?????????* ??4、解析获取每一个FileItem 对象45 ?????????*/46 ????????????47 ????????????FileItem item = list.get(0);48 49 ????????????//验证当前FileItem ?是否是表单字段 ???如果fales ?则取到的是文件50 ????????????item.isFormField();51 ????????/**52 ?????????* ??5、文件名及路径处理53 ?????????*/54 ????????????//处理文件55 ????????????String filename= item.getName();56 ????????????//截取文件扩展名57 ????????????String extName = filename.substring(filename.lastIndexOf("."));58 ????????????//生成UUID作为文件名59 ????????????String newName= UUID.randomUUID().toString();60 ????????????//获取服务器上自定义的存放文件的目录61 ????????????String rootPath = request.getSession().getServletContext().getRealPath("/upload");62 ????????????//生成完整的文件路径63 ????????????String newPath = rootPath+"/"+newName+extName;64 ????????????System.out.println(newPath);65 ????????/**66 ?????????* ?????6、文件写入67 ?????????*/68 ????????????item.write(new File(newPath));69 ????????????70 ????????} catch (FileUploadException e) {71 ????????????e.printStackTrace();72 ????????} catch (Exception e) {73 ????????????e.printStackTrace();74 ????????}75 ????}76 77 }commons.fileupload ?文件上传
原文地址：http://www.cnblogs.com/the-wang/p/7598314.html