jsp文件下传整理-JavaSript-爱易网页

jsp文件下传整理

日期：2014-05-16　浏览次数：20377 次

jsp文件上传整理
jsp/servlet文件上传整理

一、采用的架包
commons-fileupload-1.2.1.jar、commons-io-1.4.jar
二、jsp页面如下
file_upload.jsp

<%@ page language="java" pageEncoding="utf-8"%>

<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">
    <title>文件上传演示例子</title>
  </head>
	<body>
		<h3>文件上传</h3>
		<hr />
		<form action="fileUpload" method="post" enctype="multipart/form-data" >
			<table>
				<tr>
					<td>
						 
					</td>
					<td>
						<input type="file" name="file" />
					</td>
				</tr>
				<tr>
					<td>
						 
					</td>
					<td>
						<input type="submit" value="文件上传" />
					</td>
				</tr>
			</table>
		</form>
	</body>
</html>

三、servlet代码
FileUploadServlet.java


package com.util;

import java.io.*;
import java.util.List;

import javax.servlet.*;
import javax.servlet.http.*;

import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;

public class FileUploadServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;

	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws IOException, ServletException {
		this.doPost(request, response);
	}

	@SuppressWarnings("unchecked")
	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws IOException, ServletException {
		// 采用apache工具包进行文件上传操作
		DiskFileItemFactory factory = new DiskFileItemFactory();
		ServletFileUpload upload = new ServletFileUpload(factory);
		try {
			List<FileItem> fileitems = upload.parseRequest(request);
			for (FileItem item : fileitems) {
				if (item.isFormField()) {
					String name = item.getFieldName();
					String value = item.getString();
					
					// 转换下字符集编码
					value = new String(value.getBytes("iso-8859-1"), "utf-8");
					System.out.println(name + "=" + value);
				} else {
					String filename = item.getName();
					//System.out.println(filename);
					ServletContext context = getServletContext();
					
					// 上传的文件存放路径为...\\WebRoot\\upload\\filename
					String dir = context.getRealPath("upload");
					File file = new File(dir, filename);
					file.createNewFile();
					
					// 获得流，读取数据写入文件
					InputStream in = item.getInputStream();
					FileOutputStream fos = new FileOutputStream(file);
					
					int len;
					byte[] buffer = new byte[1024];
					while ((len = in.read(buffer)) > 0)
						fos.write(buffer, 0, len);
					
					// 关闭资源文件操作
					fos.close();
					in.close();
					// 删除临时文件
					item.delete();
				}
			}
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

}

四、web.xml配置如下

<servlet>
	<servlet-name>fileUpload</servlet-name>
	<servlet-class>com.shopping.util.FileUploadServlet</servlet-class>
</servlet>
<servlet-mapping>
	<servlet-name>fileUpload</servlet-name>
	<url-pattern>/fileUpload</url-pattern>
</servlet-mapping>

1 楼 808_小星星 2012-03-06

顶一个，白菜路过……

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