springMvc上传文件、读取zip/rar文件

参考文章：

http://www.cnblogs.com/interdrp/p/6734033.html

方法一：　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　

1）没有配置org.springframework.web.multipart.commons.CommonsMultipartResolver

2）MultipartFile转化为File的方式为：

MultipartFile file = multiRequest.getFile("imgFile");
CommonsMultipartFile cf= (CommonsMultipartFile) file;
DiskFileItem   fi = (DiskFileItem ) cf.getFileItem();
File fs = fi.getStoreLocation();

代码例子1：保存用户信息，用户有照片

    //增加用户
    @RequestMapping("/addUser")
    @ResponseBody
    public String addUser(HttpServletRequest request, HttpServletResponse response){
        String username = "";
        int age = 0;
        String photoName = "";
        byte[] photo = null;

        //创建一个通用的多部分解析器.
        CommonsMultipartResolver multipartResolver = new CommonsMultipartResolver(request.getSession().getServletContext());

        //判断 request 是否有文件上传,即多部分请求...
        if(multipartResolver.isMultipart(request)){
            //转换成多部分request
            MultipartHttpServletRequest multiRequest = multipartResolver.resolveMultipart(request);

            //获取普通表单的属性
            username = multiRequest.getParameter("username");
            String ageStr = multiRequest.getParameter("age");
            if(ageStr!=null){
                try{
                    age = Integer.parseInt(ageStr);
                }catch(Exception e){
                    e.printStackTrace();
                }
            }

            //取得request中的所有文件名
            Iterator<String> iter = multiRequest.getFileNames();
            while(iter.hasNext()){
                //取得上传文件
                MultipartFile file = multiRequest.getFile(iter.next());
                if(file != null){
                    //取得当前上传文件的文件名称
                    photoName = file.getOriginalFilename();
                    try {
                        InputStream inputStream = file.getInputStream();
                        photo = new byte[inputStream.available()];
                        inputStream.read(photo);
                        inputStream.close();
                    } catch (IOException e) {
                        e.printStackTrace();
                    }
                }
            }
        }

        User user = new User(username, age, photoName, photo);

        int count = userService.insertUser(user);

        if(count > 0){
            return "success";
        }else{
            return "failed";
        }

    }

代码例子2：上传压缩包zip或者rar；这里是单包上传（single），每个zip/rar下面直接是一个一个的jpg图片；

//上传图片zip/rar文件  --
    @RequestMapping("/uploadImageFile")
    @ResponseBody
    public String uploadImageFile(HttpServletRequest request, HttpServletResponse response){
        CommonsMultipartResolver multipartResolver = new CommonsMultipartResolver(request.getSession().getServletContext());
        if(multipartResolver.isMultipart(request)){
            MultipartHttpServletRequest multiRequest = multipartResolver.resolveMultipart(request);
            String packageType = multiRequest.getParameter("packageType");

            if(packageType.equals("single")){    //单包
                MultipartFile file = multiRequest.getFile("imgFile");
                if(file != null){
                    String packageName = file.getOriginalFilename();                    //上传的包名
                    String iconName = productService.getIconNameByPackage(packageName);    //获取该包下面的缩略图名称

                    if(packageName.matches(".*\\.zip")){                //是zip压缩文件
                        try{
                            ZipInputStream zs = new ZipInputStream(file.getInputStream());
                            BufferedInputStream bs = new BufferedInputStream(zs);
                            ZipEntry ze;
                            byte[] picture = null;
                            while((ze = zs.getNextEntry()) != null){                    //获取zip包中的每一个zip file entry
                                String fileName = ze.getName();                            //pictureName
                                picture = new byte[(int) ze.getSize()];                    //读一个文件大小
                                bs.read(picture, 0, (int) ze.getSize());
                                ImageFile image = new ImageFile(packageName, "N", fileName, picture); //保存image，非缩略图
                                productService.insertImage(image);

                                if(fileName.equals(iconName)){                            //这个picture要作为缩略图,进行裁剪、保存
                                    String thumbName = ImageUtil.createThumbFileName(fileName);    //生成缩略图名称
                                    InputStream is = new ByteArrayInputStream(picture);
                                    byte[] thumbPic = ImageUtil.clipImage(is, 100, 100, "jpg");    //进行裁剪
                                    ImageFile thumbImage = new ImageFile(packageName, "Y", thumbName, thumbPic);
                                    productService.insertImage(thumbImage);
                                }
                            }
                            bs.close();
                            zs.close();
                            return "success";
                        }catch(IOException e){
                            e.printStackTrace();
                        }
                    }else if(packageName.matches(".*\\.rar")){                    //是rar压缩文件
                        try {
                            //MultipartFile file 转化为File 有临时文件产生：
                            CommonsMultipartFile cf= (CommonsMultipartFile) file;
                            DiskFileItem   fi = (DiskFileItem ) cf.getFileItem();
                            File fs = fi.getStoreLocation();
                            Archive archive = new Archive(fs);
                            ByteArrayOutputStream bos = null;
                            byte[] picture = null;
                            FileHeader fh = archive.nextFileHeader();
                            while(fh!=null){
                                String fileName = fh.getFileNameString();
                                bos = new ByteArrayOutputStream();
                                archive.extractFile(fh, bos);
                                picture = bos.toByteArray();
                                ImageFile image = new ImageFile(packageName, "N", fileName, picture); //保存image，非缩略图
                                productService.insertImage(image);
                                fh = archive.nextFileHeader();
                            }

                            bos.close();
                            archive.close();
                            return "success";
                        } catch (RarException e) {
                            e.printStackTrace();
                        } catch (IOException e) {
                            e.printStackTrace();
                        }

                    }
                }
            }
        }

        return "failed";
    }

方法二：配置org.springframework.web.multipart.commons.CommonsMultipartResolver

<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
        <property name="defaultEncoding" value="utf-8"></property>
        <property name="maxUploadSize" value="10485760000"></property>
        <property name="maxInMemorySize" value="40960"></property>
    </bean> 

代码例子：

//上传文件zip/rar  方法二  配置org.springframework.web.multipart.commons.CommonsMultipartResolver
    @RequestMapping("/uploadImageFile2")
    @ResponseBody
    public String uploadImageFile2(HttpServletRequest request, HttpServletResponse response){
        MultipartHttpServletRequest  multiRequest = (MultipartHttpServletRequest) request;
        String packageType = multiRequest.getParameter("packageType");
        if(packageType.equals("single")){    //单包
            MultipartFile file = multiRequest.getFile("imgFile");
            if(file != null){
                String packageName = file.getOriginalFilename();                    //上传的包名
                String iconName = productService.getIconNameByPackage(packageName);    //获取该包下面的缩略图名称

                if(packageName.matches(".*\\.zip")){                //是zip压缩文件
                    try{
                        ZipInputStream zs = new ZipInputStream(file.getInputStream());
                        BufferedInputStream bs = new BufferedInputStream(zs);
                        ZipEntry ze;
                        byte[] picture = null;
                        while((ze = zs.getNextEntry()) != null){                    //获取zip包中的每一个zip file entry
                            String fileName = ze.getName();                            //pictureName
                            picture = new byte[(int) ze.getSize()];                    //读一个文件大小
                            bs.read(picture, 0, (int) ze.getSize());
                            ImageFile image = new ImageFile(packageName, "N", fileName, picture); //保存image，非缩略图
                            productService.insertImage(image);

                            if(fileName.equals(iconName)){                            //这个picture要作为缩略图,进行裁剪、保存
                                String thumbName = ImageUtil.createThumbFileName(fileName);    //生成缩略图名称
                                InputStream is = new ByteArrayInputStream(picture);
                                byte[] thumbPic = ImageUtil.clipImage(is, 100, 100, "jpg");    //进行裁剪
                                ImageFile thumbImage = new ImageFile(packageName, "Y", thumbName, thumbPic);
                                productService.insertImage(thumbImage);
                            }
                        }
                        bs.close();
                        zs.close();
                        return "success";
                    }catch(IOException e){
                        e.printStackTrace();
                    }
                }else if(packageName.matches(".*\\.rar")){                    //是rar压缩文件

                 　　//....和上面一样。

                }
            }
        }

        return "failed";
    }

最后补充上面用到的工具类：ImageUtil.java(里面有对图片裁剪的方法)

package com.cy.util;

import java.awt.image.BufferedImage;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;

import javax.imageio.ImageIO;

public class ImageUtil {
    /**
     * 判断压缩文件的类型
     */

    /**
     * 生成缩略图名称
     * @param srcFileName
     * @return
     */
    public static String createThumbFileName(String srcFileName){
        StringBuffer thumbFileName = new StringBuffer();

        int pos = srcFileName.lastIndexOf(".");
        thumbFileName.append(srcFileName.substring(0, pos));
        thumbFileName.append("_small");
        thumbFileName.append(srcFileName.substring(pos, srcFileName.length()));
        return thumbFileName.toString();
    }

    /**
     * 对图片进行剪裁
     * @param is            图片输入流
     * @param width            裁剪图片的宽
     * @param height        裁剪图片的高
     * @param imageFormat    输出图片的格式
     * @return
     */
    public static byte[] clipImage(InputStream is,int width, int height, String imageFormat){
        ByteArrayOutputStream bos = new ByteArrayOutputStream();
        try {
            // 构造Image对象
            BufferedImage src = javax.imageio.ImageIO.read(is);
            // 缩小边长
            BufferedImage tag = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
            // 绘制 缩小  后的图片
            tag.getGraphics().drawImage(src, 0, 0, width, height, null);
            ImageIO.write(tag, imageFormat, bos);
        } catch (IOException e) {
            e.printStackTrace();
        }finally{
            try {
                is.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }

        return bos.toByteArray();
    }
}

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