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转自:http://blog.csdn.net/geloin/article/details/7537425
相关资源下载地址:http://download.csdn.net/detail/geloin/4506561
本文基于Spring MVC 注解,让Spring跑起来。
(1) 导入jar包:ant.jar、commons-fileupload.jar、connom-io.jar。
(2) 在src/context/dispatcher.xml中添加
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<bean id="multipartResolver"
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class="org.springframework.web.multipart.commons.CommonsMultipartResolver"
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p:defaultEncoding="UTF-8" />
注意,需要在头部添加内容,添加后如下所示:
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<beans default-lazy-init="true"
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xmlns="http://www.springframework.org/schema/beans"
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xmlns:p="http://www.springframework.org/schema/p"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xmlns:context="http://www.springframework.org/schema/context"
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xmlns:mvc="http://www.springframework.org/schema/mvc"
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xsi:schemaLocation="
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http://www.springframework.org/schema/beans
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http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
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http://www.springframework.org/schema/mvc
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http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
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http://www.springframework.org/schema/context
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http://www.springframework.org/schema/context/spring-context-3.0.xsd">
(3) 添加工具类FileOperateUtil.java
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/**
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*
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* @author geloin
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* @date 2012-5-5 下午12:05:57
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*/
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package com.geloin.spring.util;
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import java.io.BufferedInputStream;
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import java.io.BufferedOutputStream;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.FileOutputStream;
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import java.text.SimpleDateFormat;
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import java.util.ArrayList;
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import java.util.Date;
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import java.util.HashMap;
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import java.util.Iterator;
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import java.util.List;
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import java.util.Map;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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import org.apache.tools.zip.ZipEntry;
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import org.apache.tools.zip.ZipOutputStream;
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import org.springframework.util.FileCopyUtils;
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import org.springframework.web.multipart.MultipartFile;
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import org.springframework.web.multipart.MultipartHttpServletRequest;
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/**
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*
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* @author geloin
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* @date 2012-5-5 下午12:05:57
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*/
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public class FileOperateUtil {
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private static final String REALNAME = "realName";
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private static final String STORENAME = "storeName";
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private static final String SIZE = "size";
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private static final String SUFFIX = "suffix";
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private static final String CONTENTTYPE = "contentType";
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private static final String CREATETIME = "createTime";
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private static final String UPLOADDIR = "uploadDir/";
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/**
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* 将上传的文件进行重命名
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*
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* @author geloin
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* @date 2012-3-29 下午3:39:53
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* @param name
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* @return
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*/
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private static String rename(String name) {
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Long now = Long.parseLong(new SimpleDateFormat("yyyyMMddHHmmss")
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.format(new Date()));
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Long random = (long) (Math.random() * now);
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String fileName = now + "" + random;
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if (name.indexOf(".") != -1) {
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fileName += name.substring(name.lastIndexOf("."));
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}
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return fileName;
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}
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/**
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* 压缩后的文件名
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*
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* @author geloin
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* @date 2012-3-29 下午6:21:32
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* @param name
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* @return
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*/
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private static String zipName(String name) {
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String prefix = "";
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if (name.indexOf(".") != -1) {
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prefix = name.substring(0, name.lastIndexOf("."));
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} else {
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prefix = name;
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}
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return prefix + ".zip";
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}
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/**
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* 上传文件
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*
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* @author geloin
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* @date 2012-5-5 下午12:25:47
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* @param request
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* @param params
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* @param values
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* @return
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* @throws Exception
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*/
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public static List<Map<String, Object>> upload(HttpServletRequest request,
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String[] params, Map<String, Object[]> values) throws Exception {
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List<Map<String, Object>> result = new ArrayList<Map<String, Object>>();
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MultipartHttpServletRequest mRequest = (MultipartHttpServletRequest) request;
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Map<String, MultipartFile> fileMap = mRequest.getFileMap();
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String uploadDir = request.getSession().getServletContext()
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.getRealPath("/")
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+ FileOperateUtil.UPLOADDIR;
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File file = new File(uploadDir);
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if (!file.exists()) {
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file.mkdir();
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}
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String fileName = null;
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int i = 0;
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for (Iterator<Map.Entry<String, MultipartFile>> it = fileMap.entrySet()
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.iterator(); it.hasNext(); i++) {
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Map.Entry<String, MultipartFile> entry = it.next();
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MultipartFile mFile = entry.getValue();
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fileName = mFile.getOriginalFilename();
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String storeName = rename(fileName);
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String noZipName = uploadDir + storeName;
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String zipName = zipName(noZipName);
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// 上传成为压缩文件
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ZipOutputStream outputStream = new ZipOutputStream(
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new BufferedOutputStream(new FileOutputStream(zipName)));
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outputStream.putNextEntry(new ZipEntry(fileName));
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outputStream.setEncoding("GBK");
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FileCopyUtils.copy(mFile.getInputStream(), outputStream);
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Map<String, Object> map = new HashMap<String, Object>();
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// 固定参数值对
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map.put(FileOperateUtil.REALNAME, zipName(fileName));
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map.put(FileOperateUtil.STORENAME, zipName(storeName));
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map.put(FileOperateUtil.SIZE, new File(zipName).length());
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map.put(FileOperateUtil.SUFFIX, "zip");
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map.put(FileOperateUtil.CONTENTTYPE, "application/octet-stream");
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map.put(FileOperateUtil.CREATETIME, new Date());
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// 自定义参数值对
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for (String param : params) {
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map.put(param, values.get(param)[i]);
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}
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result.add(map);
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}
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return result;
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}
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/**
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* 下载
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*
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* @author geloin
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* @date 2012-5-5 下午12:25:39
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* @param request
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* @param response
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* @param storeName
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* @param contentType
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* @param realName
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* @throws Exception
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*/
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public static void download(HttpServletRequest request,
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HttpServletResponse response, String storeName, String contentType,
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String realName) throws Exception {
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response.setContentType("text/html;charset=UTF-8");
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request.setCharacterEncoding("UTF-8");
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BufferedInputStream bis = null;
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BufferedOutputStream bos = null;
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String ctxPath = request.getSession().getServletContext()
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.getRealPath("/")
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+ FileOperateUtil.UPLOADDIR;
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String downLoadPath = ctxPath + storeName;
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long fileLength = new File(downLoadPath).length();
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response.setContentType(contentType);
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response.setHeader("Content-disposition", "attachment; filename="
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+ new String(realName.getBytes("utf-8"), "ISO8859-1"));
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response.setHeader("Content-Length", String.valueOf(fileLength));
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bis = new BufferedInputStream(new FileInputStream(downLoadPath));
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bos = new BufferedOutputStream(response.getOutputStream());
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byte[] buff = new byte[2048];
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int bytesRead;
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while (-1 != (bytesRead = bis.read(buff, 0, buff.length))) {
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bos.write(buff, 0, bytesRead);
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}
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bis.close();
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bos.close();
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}
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}
可完全使用而不必改变该类,需要注意的是,该类中设定将上传后的文件放置在WebContent/uploadDir下。
(4) 添加FileOperateController.java
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/**
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*
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* @author geloin
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* @date 2012-5-5 上午11:56:35
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*/
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package com.geloin.spring.controller;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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import org.springframework.stereotype.Controller;
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import org.springframework.web.bind.ServletRequestUtils;
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import org.springframework.web.bind.annotation.RequestMapping;
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import org.springframework.web.servlet.ModelAndView;
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import com.geloin.spring.util.FileOperateUtil;
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/**
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*
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* @author geloin
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* @date 2012-5-5 上午11:56:35
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*/
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@Controller
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@RequestMapping(value = "background/fileOperate")
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public class FileOperateController {
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/**
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* 到上传文件的位置
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*
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* @author geloin
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* @date 2012-3-29 下午4:01:31
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* @return
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*/
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@RequestMapping(value = "to_upload")
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public ModelAndView toUpload() {
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return new ModelAndView("background/fileOperate/upload");
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}
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/**
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* 上传文件
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*
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* @author geloin
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* @date 2012-3-29 下午4:01:41
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* @param request
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* @return
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* @throws Exception
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*/
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@RequestMapping(value = "upload")
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public ModelAndView upload(HttpServletRequest request) throws Exception {
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Map<String, Object> map = new HashMap<String, Object>();
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// 别名
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String[] alaises = ServletRequestUtils.getStringParameters(request,
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"alais");
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String[] params = new String[] { "alais" };
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Map<String, Object[]> values = new HashMap<String, Object[]>();
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values.put("alais", alaises);
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List<Map<String, Object>> result = FileOperateUtil.upload(request,
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params, values);
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map.put("result", result);
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return new ModelAndView("background/fileOperate/list", map);
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}
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/**
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* 下载
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*
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* @author geloin
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* @date 2012-3-29 下午5:24:14
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* @param attachment
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* @param request
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* @param response
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* @return
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* @throws Exception
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*/
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@RequestMapping(value = "download")
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public ModelAndView download(HttpServletRequest request,
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HttpServletResponse response) throws Exception {
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String storeName = "201205051340364510870879724.zip";
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String realName = "Java设计模式.zip";
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String contentType = "application/octet-stream";
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FileOperateUtil.download(request, response, storeName, contentType,
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realName);
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return null;
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}
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}
下载方法请自行变更,若使用数据库保存上传文件的信息时,请参考Spring MVC 整合Mybatis实例。
(5) 添加fileOperate/upload.jsp
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<%@ page language="java" contentType="text/html; charset=UTF-8"
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pageEncoding="UTF-8"%>
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<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
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<!DOCTYPE html
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PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
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"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
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<title>Insert title here</title>
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</head>
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<body>
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</body>
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<form enctype="multipart/form-data"
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action="<c:url value="/background/fileOperate/upload.html" />" method="post">
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<input type="file" name="file1" /> <input type="text" name="alais" /><br />
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<input type="file" name="file2" /> <input type="text" name="alais" /><br />
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<input type="file" name="file3" /> <input type="text" name="alais" /><br />
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<input type="submit" value="上传" />
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</form>
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</html>
确保enctype的值为multipart/form-data;method的值为post。
(6) 添加fileOperate/list.jsp
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<%@ page language="java" contentType="text/html; charset=UTF-8"
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pageEncoding="UTF-8"%>
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<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
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<!DOCTYPE html
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PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
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"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
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<title>Insert title here</title>
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</head>
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<body>
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<c:forEach items="${result }" var="item">
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<c:forEach items="${item }" var="m">
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<c:if test="${m.key eq ‘realName‘ }">
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${m.value }
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</c:if>
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<br />
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</c:forEach>
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</c:forEach>
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</body>
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</html>
(7)
通过http://localhost:8080/spring_test/background/fileOperate
/to_upload.html访问上传页面,通过http://localhost:8080/spring_test/background
/fileOperate/download.html下载文件
SpringMVC的上传和下载
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原文地址:http://www.cnblogs.com/Struggles/p/4381554.html