文件上传工具包

来源：互联网发布：最简单图片轮播js代码编辑：程序博客网时间：2024/06/07 04:05
好久没写博客，代码小生，
前提是需要导入相应的包，再整合spring+springmvc项目使用
package cn.zhangguimin.web.utils;import java.io.File;import java.util.ArrayList;import java.util.List;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpSession;import org.apache.commons.io.FilenameUtils;import org.apache.commons.lang.math.RandomUtils;import org.springframework.web.multipart.MultipartFile;/** * 文件工上传具类 *  * @Author 章先森 * @CreateDate 2017年11月11日 * @ www.zhngguimin.cn */public class FilesUpload {    /**     * 上传图片方法     * 图片格式:bmp,jpg,png,gif,jpeg,pneg     * 最大上传大小:size 单位M     * 上传路径:path--request.getSession().getServletContext().getRealPath("static" + File.separator + "pic");     * @param attach     * @param session     * @param request     * @return     * @throws Exception     */    public String uploadPhoto(MultipartFile attach, HttpSession session, HttpServletRequest request,Integer size) throws Exception {        String idPicPath = null;        if (!attach.isEmpty()) {            String path = request.getSession().getServletContext().getRealPath("static" + File.separator + "pic");            String oldFileName = attach.getOriginalFilename();            String prefix = FilenameUtils.getExtension(oldFileName);            int filesize = size*1024000;            if (attach.getSize() > filesize) {                throw new RuntimeException("SizeError");                // 图片格式:bmp,jpg,png,gif,jpeg,pneg            } else if (prefix.equalsIgnoreCase("jpg") || prefix.equalsIgnoreCase("png")                    || prefix.equalsIgnoreCase("jpeg") || prefix.equalsIgnoreCase("pneg")                    || prefix.equalsIgnoreCase("gif") || prefix.equalsIgnoreCase("bmp")) {                String fileName=System.currentTimeMillis()+RandomUtils.nextInt(1000000)+"user."+prefix;                File targetFile=new File(path,fileName);                if (!targetFile.exists()) {                    targetFile.mkdirs();                }                try {                    attach.transferTo(targetFile);                } catch (RuntimeException fe) {                    fe.printStackTrace();                }                idPicPath=path+File.separator+fileName;            }else {                throw new RuntimeException("PicError");            }        }        return idPicPath;    }    /**     * 多文件上传     * 文件格式:doc,xlsx,zip,txt,docx,pptx     * 最大上传大小:size 单位M     * 上传路径:path--request.getSession().getServletContext().getRealPath("static" + File.separator + "files");     * @param attach     * @param session     * @param request     * @return     * @throws Exception     */    public List<String> uploadFiles(MultipartFile[] attachs, HttpSession session, HttpServletRequest request,Integer size) throws Exception {        List<String> idPicPath=null;        if (attachs.length>0) {            idPicPath=new ArrayList<>();            for (MultipartFile attach : attachs) {                String path = request.getSession().getServletContext().getRealPath("static" + File.separator + "files");                String oldFileName = attach.getOriginalFilename();                String prefix = FilenameUtils.getExtension(oldFileName);                int filesize = size*1024000;                if (attach.getSize() > filesize) {                    throw new RuntimeException("SizeError");                    // 图片格式:doc,xlsx,zip,txt,docx,pptx                } else if (prefix.equalsIgnoreCase("doc") || prefix.equalsIgnoreCase("docx")                        || prefix.equalsIgnoreCase("xlsx") || prefix.equalsIgnoreCase("pptx")                        || prefix.equalsIgnoreCase("txt") || prefix.equalsIgnoreCase("zip")) {                    String fileName=System.currentTimeMillis()+RandomUtils.nextInt(1000000)+"file."+prefix;                    File targetFile=new File(path,fileName);                    if (!targetFile.exists()) {                        targetFile.mkdirs();                    }                    try {                        attach.transferTo(targetFile);                    } catch (RuntimeException fe) {                        fe.printStackTrace();                    }                    idPicPath.add(path+File.separator+fileName);                }else {                    throw new RuntimeException("PicError");                }            }            }        return idPicPath;    }}
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