SpringMVC 中檔案的上傳和下載下傳

在參照了網上的相關代碼之後，總結了一下在

springmvc

架構中實作檔案上傳和下載下傳的實作方法。内容如下。

jar 包

ant.jar
commons-fileupload-1.3.1.jar
connom-io.jar

xml 配置

springmvcxml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mvc="http://www.springframework.org/schema/mvc"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
    xsi:schemaLocation="http://www.springframework.org/schema/beans 
        http://www.springframework.org/schema/beans/spring-beans-3.1.xsd 
        http://www.springframework.org/schema/mvc 
        http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd 
        http://www.springframework.org/schema/context 
        http://www.springframework.org/schema/context/spring-context-3.1.xsd 
        http://www.springframework.org/schema/aop 
        http://www.springframework.org/schema/aop/spring-aop-3.1.xsd 
        http://www.springframework.org/schema/tx 
        http://www.springframework.org/schema/tx/spring-tx-3.1.xsd ">

    <!-- 元件掃描：掃描标記@Controller标記的類，注入到spring容器中 -->
    <context:component-scan base-package="com.export.action" />
    <!-- 注解映射器和注解擴充卡可以使用<mvc:annotation-driven />代替 -->
    <mvc:annotation-driven />
    <!-- 視圖解析 解析jsp視圖，預設支援jstl标簽 -->
    <bean
        class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/page/jsp/" />
        <property name="suffix" value=".jsp" />
    </bean>
    <bean id="multipartResolver"
        class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
        <!-- 設定上傳檔案的最大值為100MB(1024*1024*100) -->
        <property name="maxUploadSize">
            <value>104857600</value>
        </property>
        <property name="maxInMemorySize">
           <!-- 允許檔案上傳的最大尺寸(門檻值)，低于此值，隻保留在記憶體裡，超過此門檻值，生成硬碟上的臨時檔案 -->
            <value>4096</value>
        </property>
    </bean>
</beans>

頁面

檔案上傳的頁面:

fileOperate/upload.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>檔案上傳</title>
</head>
<body>
    <form enctype="multipart/form-data" action="${pageContext.request.contextPath}/upload.action" method="post" />
        <center>
            <input type="file" name="file1" />
            别名：<input type="text" name="alais" />
            <br />
            <input type="file" name="file2" />
            别名：<input type="text" name="alais" />
            <br />
            <input type="file" name="file3" />
            别名：<input type="text" name="alais" />
            <br><br>
            <input type="submit" value="上傳" />
        </center>
    </form>
</body>
</html>

上傳成功後的頁面:

fileOperate/list.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>上傳檔案清單</title>
</head>
<body>
    <c:forEach items="${result }" var="item">
        <c:forEach items="${item }" var="m">
            <c:if test="${m.key eq 'realName' }">  
                 上傳檔案名（壓縮後）: ${m.value }  
            <br />
            </c:if>
            <c:if test="${m.key eq 'path' }">  
                 上傳檔案路徑: ${m.value }  
            <br />
            </c:if>
            <c:if test="${m.key eq 'alais' }">  
                别名: ${m.value }  
            <br />
            </c:if>
        </c:forEach>
    </c:forEach>
</body>
</html>

工具類

FileOperateUtil.java

package com.export.util;

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.tools.zip.ZipEntry;
import org.apache.tools.zip.ZipOutputStream;
import org.springframework.util.FileCopyUtils;
import org.springframework.web.multipart.MultipartFile;
import org.springframework.web.multipart.MultipartHttpServletRequest;

public class FileOperateUtil {
    private static final String REALNAME = "realName";
    private static final String STORENAME = "storeName";
    private static final String SIZE = "size";
    private static final String SUFFIX = "suffix";
    private static final String CONTENTTYPE = "contentType";
    private static final String CREATETIME = "createTime";
    private static final String UPLOADDIR = "uploadDir/";

    /**
     * 将上傳的檔案進行重命名
     * 
     * @author zhang_cq
     * @param name
     * @return
     */
    private static String rename(String name) {

        Long now = Long.parseLong(new SimpleDateFormat("yyyyMMddHHmmss").format(new Date()));
        Long random = (long) (Math.random() * now);
        String fileName = now + "" + random;
        if (name.indexOf(".") != -) {
            fileName += name.substring(name.lastIndexOf("."));
        }
        return fileName;
    }

    /**
     * 壓縮後的檔案名
     * 
     * @author zhang_cq
     * @param name
     * @return
     */
    private static String zipName(String name) {
        String prefix = "";
        if (name.indexOf(".") != -) {
            prefix = name.substring(, name.lastIndexOf("."));
        } else {
            prefix = name;
        }
        return prefix + ".zip";
    }

    /**
     * 上傳檔案
     * 
     * @author zhang_cq
     * @param request
     * @param params
     * @param values
     * @return
     * @throws Exception
     */
    public static List<Map<String, Object>> upload(HttpServletRequest request, String[] params, Map<String, Object[]> values) throws Exception {

        List<Map<String, Object>> result = new ArrayList<Map<String, Object>>();

        MultipartHttpServletRequest mRequest = (MultipartHttpServletRequest) request;
        // 獲得上傳的檔案
        Map<String, MultipartFile> fileMap = mRequest.getFileMap();
        // 檔案上傳後存放的位址
        String uploadDir = request.getSession().getServletContext().getRealPath("/") + FileOperateUtil.UPLOADDIR;
        File file = new File(uploadDir);

        if (!file.exists()) {
            file.mkdir();
        }
        // 檔案名稱
        String fileName = null;
        int i = ;
        for (Iterator<Map.Entry<String, MultipartFile>> it = fileMap.entrySet().iterator(); it.hasNext(); i++) {

            Map.Entry<String, MultipartFile> entry = it.next();
            MultipartFile mFile = entry.getValue();
            // 上傳的檔案名
            fileName = mFile.getOriginalFilename();
            // 将檔案名重新命名
            String storeName = rename(fileName);
            // 上傳檔案的路徑+名稱
            String noZipName = uploadDir + storeName;
            // 壓縮後的檔案名
            String zipName = zipName(noZipName);

            // 上傳成為壓縮檔案
            ZipOutputStream outputStream = new ZipOutputStream(new BufferedOutputStream(new FileOutputStream(zipName)));
            outputStream.putNextEntry(new ZipEntry(fileName));
            outputStream.setEncoding("GBK");

            FileCopyUtils.copy(mFile.getInputStream(), outputStream);

            Map<String, Object> map = new HashMap<String, Object>();
            // 固定參數值對
            map.put(FileOperateUtil.REALNAME, zipName(fileName)); // 圖檔元名
            map.put(FileOperateUtil.STORENAME, zipName(storeName)); // 壓縮後的名稱
            map.put(FileOperateUtil.SIZE, new File(zipName).length()); // 圖檔大小
            map.put(FileOperateUtil.SUFFIX, "zip"); //字尾
            map.put(FileOperateUtil.CONTENTTYPE, "application/octet-stream"); // 格式
            map.put(FileOperateUtil.CREATETIME, new Date()); // 建立日期
            map.put("path", uploadDir);
            // 自定義參數值對
            for (String param : params) {
                map.put(param, values.get(param)[i]);
            }

            result.add(map);
        }
        return result;
    }

    /**
     * 下載下傳
     * 
     * @author zhang_cq
     * @param request
     * @param response
     * @param storeName
     * @param contentType
     * @param realName
     * @throws Exception
     */
    public static void download(HttpServletRequest request, HttpServletResponse response, String storeName,
            String contentType, String realName) throws Exception {
        response.setContentType("text/html;charset=UTF-8");
        request.setCharacterEncoding("UTF-8");
        BufferedInputStream bis = null;
        BufferedOutputStream bos = null;
        // 下載下傳源路徑
        String ctxPath = request.getSession().getServletContext().getRealPath("/") + FileOperateUtil.UPLOADDIR;
        String downLoadPath = ctxPath + storeName;

        long fileLength = new File(downLoadPath).length();

        response.setContentType(contentType);
        response.setHeader("Content-disposition",
                "attachment; filename=" + new String(realName.getBytes("utf-8"), "ISO8859-1"));
        response.setHeader("Content-Length", String.valueOf(fileLength));

        bis = new BufferedInputStream(new FileInputStream(downLoadPath));
        bos = new BufferedOutputStream(response.getOutputStream());
        byte[] buff = new byte[];
        int bytesRead;
        while (- != (bytesRead = bis.read(buff, , buff.length))) {
            bos.write(buff, , bytesRead);
        }
        bis.close();
        bos.close();
    }
}

controller

FileOperateController.java

package com.export.action;

import java.util.HashMap;
import java.util.List;
import java.util.Map;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.ServletRequestUtils;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;

import com.export.util.FileOperateUtil;;

/**
 * 檔案的上傳和下載下傳
 * 
 * @author zcq12
 *
 */
@Controller
public class FileOperateController {
    /**
     * 到上傳檔案的位置
     * 
     * @author geloin
     * @date 2012-3-29 下午4:01:31
     * @return
     */
    @RequestMapping(value = "/to_upload")
    public String toUpload() {
        return "fileOperate/upload";
    }

    /**
     * 上傳檔案
     * 
     * @author zhang_cq
     * @param request
     * @return
     * @throws Exception
     */
    @RequestMapping(value = "/upload")
    public ModelAndView upload(HttpServletRequest request) throws Exception {

        Map<String, Object> map = new HashMap<String, Object>();

        // 别名
        String[] alaises = ServletRequestUtils.getStringParameters(request, "alais");

        String[] params = new String[] { "alais" };
        Map<String, Object[]> values = new HashMap<String, Object[]>();
        values.put("alais", alaises);

        List<Map<String, Object>> result = FileOperateUtil.upload(request, params, values);

        map.put("result", result);

        return new ModelAndView("fileOperate/list", map);
    }

    /**
     * 下載下傳
     * 
     * @author zhang_cq
     * @param attachment
     * @param request
     * @param response
     * @return
     * @throws Exception
     */
    @RequestMapping(value = "download")
    public ModelAndView download(HttpServletRequest request, HttpServletResponse response) throws Exception {
        // 下載下傳源
        String storeName = "2017011821392011420519411922.zip";
        // 下載下傳之後的檔案名
        String realName = "myPhoto.zip";
        String contentType = "application/octet-stream";

        FileOperateUtil.download(request, response, storeName, contentType, realName);

        return null;
    }
}

至此就完成了 springmvc 中檔案的上傳和下載下傳的相關功能。源碼見codding

SpringMVC 中檔案的上傳和下載下傳

jar 包

xml 配置

頁面

工具類

controller

繼續閱讀

springMVC實作JSON互動

配置springmvc傳回json格式資料

springmvc傳回json資料（零配置方式）

jquery,ajax,jsonp例子+springmvc背景

SpringMVC(六) | 前後端互動之ajax與jsonjsonajax

SpringMVC之ajax異步互動

Spring MVC 自學雜記（五） -- SpringMVC與前台的json資料互動

SpringMVC ----Json的簡單互動處理Json的介紹JSON 和 JavaScript 對象互轉Controller傳回JSON資料

SpringMvc與前端互動的資料轉遞（ajax）一、text類型資料二、json類型資料

springMvc如何和前端頁面互動，傳輸json資料springMvc和前端傳輸資料

spingmvc 檔案上傳一、單檔案上傳二、多檔案上傳

spingmvc實作附件單個和打包下載下傳

SpringMVC傳回json資料的三種方式

SpringMVC常見注釋的簡述

SSM架構（二）------------表現層的SpringMVC

SpringMVC傳回用戶端Json/XML資料