分享文件上传工具类

最近在搭建一个项目，需要用到很多通用的工具类，自己也写了几个。现在分享一下，也方便自己以后使用。如果你觉得不错的话，也欢迎转载。
blog
http://blog.csdn.net/IBM_hoojo
http://hoojo.cnblogs.com
http://hoojo.blogjava.net

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文件上传状态枚举类：

package com.hoo.enums;/** * <b>function:</b> 文件上传状态 * @package com.hoo.enums * @fileName UploadState.java * @createDate 2010-10-11 下午12:18:14 * @author hoojo */public enum UploadState {    UPLOAD_SUCCSSS(0, "上传文件成功！"),     UPLOAD_FAILURE(1, "上传文件失败！"),     UPLOAD_TYPE_ERROR(2, "上传文件类型错误！"),     UPLOAD_OVERSIZE(3, "上传文件过大！"),    UPLOAD_ZEROSIZE(4, "上传文件为空！"),    UPLOAD_NOTFOUND(5, "上传文件路径错误！");        private String state;    private int flag;    public String getState() {        return this.state;    }        public int getFlag() {        return this.flag;    }    UploadState(int flag, String state) {        this.state = state;        this.flag = flag;    }}

文件上传工具类code：

package com.hoo.util;import java.io.File;import java.io.FileInputStream;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.IOException;import java.io.InputStream;import java.text.SimpleDateFormat;import java.util.Date;import java.util.Random;import java.util.UUID;import org.apache.commons.io.FileUtils;import com.hoo.enums.UploadState;/*** * <b>function:</b> 文件上传工具类 * @author hoojo * @createDate Oct 9, 2010 11:12:47 PM * @file UploadFileUtils.java * @package com.hoo.util * @blog http://blog.csdn.net/IBM_hoojo * @email [e-mail] * @version 1.0 */public abstract class UploadFileUtils {        //上传文件保存路径    public static String path = "/upload/";    //定义可以上传文件的后缀数组,默认"*"，代表所有    public static String[] filePostfixs = { "*" };    public static String[] typeImages = { "gif", "jpeg", "png", "jpg", "tif", "bmp" };    public static String[] typeOthers = { "html", "htm", "doc", "xls", "txt", "zip", "rar", "pdf", "cll" };        //上传文件的最大长度    public static long maxFileSize = 1024 * 1024 * 1024 * 2L;//2G    //一次读取多少字节    public static int bufferSize = 1024 * 8;        private final static void init() {        if (bufferSize > Integer.MAX_VALUE) {            bufferSize = 1024 * 8;        } else if (bufferSize < 8) {            bufferSize = 8;        }        if (maxFileSize < 1) {            maxFileSize = 1024 * 1024 * 1024 * 2L;        } else if (maxFileSize > Long.MAX_VALUE) {            maxFileSize = 1024 * 1024 * 1024 * 2L;        }    }        /**     * <b>function:</b>通过输入流参数上传文件     * @author hoojo     * @createDate Oct 9, 2010 11:22:47 PM     * @param uploadFileName 文件名称     * @param savePath 保存路径     * @param InputStream 上传的文件的输入流     * @return 是否上传成功     * @throws Exception     */    public static UploadState upload4Stream(String fileName, String path, InputStream is) throws Exception {        init();        UploadState state = UploadState.UPLOAD_FAILURE;        FileOutputStream fos = null;               try {            path = getDoPath(path);            mkDir(path);            fos = new FileOutputStream(path + fileName);                             byte[] buffer = new byte[bufferSize];               int len = 0;               while ((len = is.read(buffer)) > 0) {                   fos.write(buffer, 0, len);               }            state = UploadState.UPLOAD_SUCCSSS;        } catch (FileNotFoundException e) {               state = UploadState.UPLOAD_NOTFOUND;               throw e;        } catch (IOException e) {               state = UploadState.UPLOAD_FAILURE;            throw e;         } finally {            if (is != null) {                is.close();            }            if (fos != null) {                fos.flush();                fos.close();            }        }        return state;       }           /**     * <b>function:</b>上传文件     * @author hoojo     * @createDate Oct 9, 2010 11:33:27 PM     * @param uploadFileName 文件名称     * @param savePath 保存路径     * @param uploadFile 上传的文件     * @return 是否上传成功     * @throws Exception     */    public static UploadState upload4Stream(String fileName, String path, File file) throws Exception {        init();        UploadState state = UploadState.UPLOAD_FAILURE;        FileInputStream fis = null;        try {            long size = file.length();            if (size <= 0) {                state = UploadState.UPLOAD_ZEROSIZE;            } else {                if (size <= maxFileSize) {                    fis = new FileInputStream(file);                     state = upload4Stream(fileName, path, fis);                } else {                    state = UploadState.UPLOAD_OVERSIZE;                }            }        } catch (FileNotFoundException e) {               state = UploadState.UPLOAD_NOTFOUND;               throw e;        } catch (IOException e) {               state = UploadState.UPLOAD_FAILURE;            throw e;         } finally {            if (fis != null) {                fis.close();            }        }        return state;       }           /**     * <b>function:</b>通过数组进行验证文件类型上传     * @author hoojo     * @createDate Oct 10, 2010 3:39:34 PM     * @param fileName 文件名称     * @param path 文件路径     * @param file 文件     * @param allowTypes 文件后缀、类型数组     * @return 返回是否上传成功     * @throws Exception     */    public static UploadState upload4Stream(String fileName, String path, File file, String[] allowTypes) throws Exception {        UploadState state = UploadState.UPLOAD_FAILURE;        if (validTypeByName(fileName, allowTypes)) {            state = upload4Stream(fileName, path, file);        } else {            state = UploadState.UPLOAD_TYPE_ERROR;        }        return state;     }        /**     * <b>function:</b>通过数组进行验证文件类型上传     * @author hoojo     * @createDate Oct 10, 2010 3:43:30 PM     * @param fileName 文件名称     * @param path 文件路径     * @param InputStream 文件输入流     * @param allowTypes 文件后缀、类型数组     * @return 返回是否上传成功     * @throws Exception     */    public static UploadState upload4Stream(String fileName, String path, InputStream fs, String[] allowTypes) throws Exception {        UploadState state = UploadState.UPLOAD_FAILURE;        if (validTypeByName(fileName, allowTypes)) {            state = upload4Stream(fileName, path, fs);        } else {            state = UploadState.UPLOAD_TYPE_ERROR;        }        return state;     }        /**     * <b>function:</b> 利用FileUtils上传文件；其中maxFileSize是限制上传文件的大小     * @author hoojo     * @createDate Oct 9, 2010 11:49:15 PM     * @param fileName 文件名称     * @param path 保存路径     * @param file 文件     * @return 是否上传成功     * @throws Exception     */    public static boolean upload4CopyFile(String fileName, String path, File file) throws Exception {        init();        boolean success = false;        if (file.length() <= maxFileSize) {            path = getDoPath(path);            mkDir(path);            File destFile = new File(path, fileName);            FileUtils.copyFile(file, destFile);            success = true;        }         return success;       }          /**     * <b>function:</b>上传指定文件类型的文件     * @author hoojo     * @createDate Oct 10, 2010 12:30:09 PM     * @param fileName 文件名     * @param path 路径     * @param file 文件     * @param allowTypes 类型、后缀数组     * @return 成功上传的文件名     * @throws Exception     */    public static boolean upload4CopyFile(String fileName, String path, File file, String[] allowTypes) throws Exception {           boolean success = false;        if (validTypeByName(fileName, allowTypes)) {            success = upload4CopyFile(fileName, path, file);        }        return success;       }        /**     * <b>function:</b> 根据文件名和类型数组验证文件类型是否合法，flag是否忽略大小写     * @author hoojo     * @createDate Oct 10, 2010 11:54:54 AM     * @param fileName 文件名     * @param allowTypes 类型数组     * @param flag 是否获得大小写     * @return 是否验证通过     */    public static boolean validTypeByName(String fileName, String[] allowTypes, boolean flag) {        String suffix = getType(fileName);        boolean valid = false;        if (allowTypes.length > 0 && "*".equals(allowTypes[0])) {            valid = true;        } else {            for (String type : allowTypes) {                if (flag) {//不区分大小写后缀                    if (suffix != null && suffix.equalsIgnoreCase(type)) {                        valid = true;                        break;                    }                } else {//严格区分大小写                    if (suffix != null && suffix.equals(type)) {                        valid = true;                        break;                    }                }            }        }        return valid;    }        /**     * <b>function:</b>根据文件名称和类型数组验证文件类型是否合法     * @author hoojo     * @createDate Oct 10, 2010 10:27:17 AM     * @param fileName 文件名     * @param allowTypes 文件类型数组     * @return 是否合法     */    public static boolean validTypeByName(String fileName, String[] allowTypes) {        return validTypeByName(fileName, allowTypes, true);    }        /**     * <b>function:</b> 根据后缀和类型数组验证文件类型是否合法，flag是否区分后缀大小写，true严格大小写     * @author hoojo     * @createDate Oct 10, 2010 12:00:10 PM     * @param suffix 后缀名     * @param allowTypes 文件类型数组     * @param flag 是否区分大小写     * @return 是否合法     */    public static boolean validTypeByPostfix(String suffix, String[] allowTypes, boolean flag) {        boolean valid = false;        if (allowTypes.length > 0 && "*".equals(allowTypes[0])) {            valid = true;        } else {            for (String type : allowTypes) {                if (flag) {//不区分大小写后缀                    if (suffix != null && suffix.equalsIgnoreCase(type)) {                        valid = true;                        break;                    }                } else {//严格区分大小写                    if (suffix != null && suffix.equals(type)) {                        valid = true;                        break;                    }                }            }        }        return valid;    }        /**     * <b>function:</b>根据文件后缀名和类型数组，验证文件类型是否合法     * @author hoojo     * @createDate Oct 10, 2010 10:25:32 AM     * @param suffix 后缀名     * @param allowTypes 类型数组     * @return 是否合法     */    public static boolean validTypeByPostfix(String suffix, String[] allowTypes) {        return validTypeByPostfix(suffix, allowTypes, true);    }        /**     * <b>function:</b>验证当前后缀、文件类型是否是图片类型     * typeImages 可以设置图片类型     * @author hoojo     * @createDate Oct 10, 2010 12:17:18 PM     * @param suffix 验证文件的后缀     * @return 是否合法     */    public static boolean validTypeByPostfix4Images(String suffix) {        return validTypeByPostfix(suffix, typeImages);    }        /**     * <b>function:</b>验证当前后缀、文件类型是否是非图片类型（常用办公文件类型）     * typeOthers 可以设置文件类型     * @author hoojo     * @createDate Oct 10, 2010 12:18:18 PM     * @param suffix 验证文件的后缀     * @return 是否合法     */    public static boolean validTypeByPostfix4Others(String suffix) {        return validTypeByPostfix(suffix, typeOthers);    }        /**     * <b>function:</b>验证当前文件名、文件类型是否是图片类型     * typeImages 可以设置图片类型     * @author hoojo     * @createDate Oct 10, 2010 12:19:18 PM     * @param fileName 验证文件的名称     * @return 是否合法     */    public static boolean validTypeByName4Images(String fileName) {        return validTypeByName(fileName, typeImages);    }        /**     * <b>function:</b>验证当前文件名称、文件类型是否是非图片类型（常用办公文件类型）     * typeOthers 可以设置文件类型     * @author hoojo     * @createDate Oct 10, 2010 12:21:22 PM     * @param fileName 验证文件的名称     * @return 是否合法     */    public static boolean validTypeByName4Others(String fileName) {        return validTypeByName(fileName, typeOthers);    }        /**     * <b>function:</b>传递一个路径和文件名称，删除该文件     * @author hoojo     * @createDate Oct 10, 2010 10:47:57 AM     * @param fileName 文件名称     * @param path 路径     * @return 是否删除成功     */    public static boolean removeFile(String fileName, String path) {        boolean flag = false;        if (isFileExist(fileName, path)) {            File file = new File(getDoPath(path) + fileName);            flag = file.delete();        }        return flag;    }        /**     * <b>function:</b>删除当前文件     * @author hoojo     * @createDate Oct 10, 2010 10:49:54 AM     * @param file 要删除的文件     * @return 是否删除成功     */    public static boolean removeFile(File file) {        boolean flag = false;        if (file != null && file.exists()) {            flag = file.delete();        }        return flag;    }        /**     * <b>function:</b>删除某个文件     * @author hoojo     * @createDate Oct 12, 2010 9:33:06 PM     * @param path 传递该文件路径     * @return 删除是否成功     */    public static boolean removeFile(String path) {        return removeFile(new File(path));    }        /**     * <b>function:</b>删除当前文件下面所有文件     * @author hoojo     * @createDate Oct 12, 2010 9:27:33 PM     * @param file File 要删除的文件夹下面文件的文件对象     * @return 是否删除成功，如果有一个文件删除失败，将返回false     */    public static boolean removeFile4Dir(File file) {        boolean flag = false;        if (file != null && file.exists() && file.isDirectory()) {            File[] allFile = file.listFiles();            for (File f : allFile) {                flag = f.delete();                if (!flag) {                    System.err.println("删除文件" + f.getAbsolutePath() + "出错了！");                    break;                }            }        }        return flag;    }        /**     * <b>function:</b>删除当前目录下所有文件     * @author hoojo     * @createDate Oct 12, 2010 9:34:41 PM     * @param path 目录、路径     * @return 是否成功     */    public static boolean removeFile4Dir(String path) {        return removeFile4Dir(new File(path));    }        /**     * <b>function:</b>删除某个文件夹下的所有文件（除目录），包含子文件夹的文件     * @author hoojo     * @createDate Oct 12, 2010 9:30:01 PM     * @param file 即将删除文件夹对象     * @return 是否删除成功     */    public static boolean removeAllFile4Dir(File file) {        boolean flag = false;        if (file != null && file.exists() && file.isDirectory()) {            File[] allFile = file.listFiles();            for (File f : allFile) {                if (!f.isDirectory()) {                    flag = f.delete();                } else {                    flag = removeAllFile4Dir(f);                }                if (!flag) {                    System.err.println("删除文件" + f.getAbsolutePath() + "出错了！");                    break;                }            }        }        return flag;    }        /**     * <b>function:</b>删除某个目录下所有文件（不包含文件夹，包含文件夹下的文件）     * @author hoojo     * @createDate Oct 12, 2010 9:36:17 PM     * @param path     * @return     */    public static boolean removeAllFile4Dir(String path) {        return removeAllFile4Dir(new File(path));    }        /**     * <b>function:</b> 传入一个文件名，得到这个文件名称的后缀     * @author hoojo     * @createDate Oct 9, 2010 11:30:46 PM     * @param fileName 文件名     * @return 后缀名     */    public static String getSuffix(String fileName) {         int index = fileName.lastIndexOf(".");         if (index != -1) {             String suffix = fileName.substring(index);//后缀             return suffix;          } else {             return null;         }    }        /**     * <b>function:</b>和文件后缀一样，不同的是没有“.”     * @author hoojo     * @createDate Oct 10, 2010 2:42:43 PM     * @param fileName 文件名称     * @return     */    public static String getType(String fileName) {        int index = fileName.lastIndexOf(".");        if (index != -1) {            String suffix = fileName.substring(index + 1);//后缀            return suffix;         } else {            return null;        }   }        /**     * <b>function:</b> 传递一个文件名称和一个新名称，组合成一个新的带后缀文件名     * 当传递的文件名没有后缀，会添加默认的后缀     * @author hoojo     * @createDate Oct 9, 2010 10:53:06 PM     * @param fileName 文件名称     * @param newName 新文件名称     * @param nullSuffix 为没有后缀的文件所添加的后缀;eg:txt     * @return String 文件名称     */    public static String getNewFileName(String fileName, String newName, String nullSuffix) {        String suffix = getSuffix(fileName);        if (suffix != null) {            newName += suffix;         } else {            newName = newName.concat(".").concat(nullSuffix);        }        return newName;       }         /**     * <b>function:</b> 利用uuid产生一个随机的name     * @author hoojo     * @createDate Oct 9, 2010 10:45:27 PM     * @param fileName 带后缀的文件名称     * @return String 随机生成的name     */    public static String getRandomName(String fileName) {        String randomName = UUID.randomUUID().toString();        return getNewFileName(fileName, randomName, "txt");    }         /**     * <b>function:</b> 用当前日期、时间和1000以内的随机数组合成的文件名称     * @author hoojo     * @createDate Oct 9, 2010 11:01:47 PM     * @param fileName 文件名称     * @return 新文件名称     */    public static String getNumberName(String fileName) {        SimpleDateFormat format = new SimpleDateFormat("yyMMddhhmmss");        int rand = new Random().nextInt(1000);        String numberName = format.format(new Date()) + rand;        return getNewFileName(fileName, numberName, "txt");    }        /**     * <b>function:</b>判断该文件是否存在     * @author hoojo     * @createDate Oct 10, 2010 12:00:44 AM     * @param fileName 文件名称     * @param path 目录     * @return 是否存在     */    public static boolean isFileExist(String fileName, String path) {        File file = new File(getDoPath(path) + fileName);        return file.exists();    }        /**     * <b>function:</b>返回可用的文件名     * @author hoojo     * @createDate Oct 10, 2010 1:02:45 AM     * @param fileName 文件名     * @param path 路径     * @return 可用文件名     */    public static String getBracketFileName(String fileName, String path) {        return getBracketFileName(fileName, fileName, path, 1);    }            /**     * <b>function:</b>递归处理文件名称，直到名称不重复（对文件名、目录文件夹都可用）     * eg: a.txt --> a(1).txt     * 文件夹upload--> 文件夹upload(1)     * @author hoojo     * @createDate Oct 10, 2010 12:56:27 AM     * @param fileName 文件名称     * @param path 文件路径     * @param num 累加数字，种子     * @return 返回没有重复的名称     */    public static String getBracketFileName(String fileName, String bracketName, String path, int num) {        boolean exist = isFileExist(bracketName, path);        if (exist) {            int index = fileName.lastIndexOf(".");            String suffix = "";            bracketName = fileName;            if (index != -1) {                suffix = fileName.substring(index);                bracketName = fileName.substring(0, index);            }            bracketName += "(" + num + ")" + suffix;            num++;            bracketName = getBracketFileName(fileName, bracketName, path, num);        }         return bracketName;    }        /**     * <b>function:</b>处理后的系统文件路径     * @author hoojo     * @createDate Oct 10, 2010 12:49:31 AM     * @param path 文件路径     * @return 返回处理后的路径     */    public static String getDoPath(String path) {        path = path.replace("\\", "/");        String lastChar = path.substring(path.length() - 1);        if (!"/".equals(lastChar)) {            path += "/";        }        return path;    }        /**     * <b>function:</b> 创建指定的path路径目录     * @author hoojo     * @createDate Oct 9, 2010 11:03:49 PM     * @param path 目录、路径     * @return 是否创建成功     * @throws Exception     */    public static boolean mkDir(String path) throws Exception {           File file = null;           try {               file = new File(path);               if (!file.exists()) {                   return file.mkdirs();               }           } catch (RuntimeException e) {               throw e;        } finally {               file = null;           }           return false;       }           /**     * 创建缩略图     * @param file 上传的文件流     * @param height 最小的尺寸     * @throws IOException     */    /*public static void writeBrevityPic(File file, float width, float height) throws IOException {        Image src = javax.imageio.ImageIO.read(file); // 构造Image对象        int old_w = src.getWidth(null); // 得到源图宽        int old_h = src.getHeight(null);        int new_w = 0;        int new_h = 0; // 得到源图长        float tempdouble;        if (old_w >= old_h) {            tempdouble = old_w / width;        } else {            tempdouble = old_h / height;        }        if (old_w >= width || old_h >= height) { // 如果文件小于锁略图的尺寸则复制即可            new_w = Math.round(old_w / tempdouble);            new_h = Math.round(old_h / tempdouble);// 计算新图长宽            while (new_w > width && new_h > height) {                if (new_w > width) {                    tempdouble = new_w / width;                    new_w = Math.round(new_w / tempdouble);                    new_h = Math.round(new_h / tempdouble);                }                if (new_h > height) {                    tempdouble = new_h / height;                    new_w = Math.round(new_w / tempdouble);                    new_h = Math.round(new_h / tempdouble);                }            }            BufferedImage tag = new BufferedImage(new_w, new_h, BufferedImage.TYPE_INT_RGB);            tag.getGraphics().drawImage(src, 0, 0, new_w, new_h, null); // 绘制缩小后的图            FileOutputStream newimage = new FileOutputStream(file); // 输出到文件流            JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(newimage);            JPEGEncodeParam param = encoder.getDefaultJPEGEncodeParam(tag);            param.setQuality((float) (100 / 100.0), true);// 设置图片质量,100最大,默认70            encoder.encode(tag, param);            encoder.encode(tag); // 将JPEG编码            newimage.close();        }    }*/        public static void main(String[] args) throws Exception {        String path = "F:/Example Exercise/ExtJS/MultiUpload/WebRoot/upload";        //System.out.println(mkDir(path));        System.out.println(getDoPath(path));        System.out.println(getBracketFileName("a.txt", getDoPath(path)));        System.out.println(getNumberName("a.jpg"));        System.out.println(getNumberName("a.jpg"));        System.out.println(getNewFileName("a", "bbb", "txt"));        System.out.println(getRandomName("a.htm"));        System.out.println(getSuffix("a.jpg"));        System.out.println(getType("a.jpg"));        //List<File> list = getFiles(path);        //List<File> list = getFiles(path, "xml");        //List<File> list = getFiles(path, typeImages);        //List<File> list = getFiles(path, typeOthers);        //List<File> list = getFiles(path, typeImages, false);        /*List<File> list = getFiles(path, "GIF", true);        for (File f : list) {            System.out.println("Name:" + f.getName());            System.out.println(f.getAbsolutePath() + "#" + f.getPath());        }*/        System.out.println(removeFile("a.txt", path));        System.out.println("#############################################");        System.out.println("###" + validTypeByName("a", new String[]{"*"}));        System.out.println("###" + validTypeByName("a.JPG", typeImages));        System.out.println("###" + validTypeByName("a.JPG", typeImages, false));        System.out.println(validTypeByPostfix("cals", new String[]{"*", "b"}));        System.out.println(validTypeByPostfix("b", new String[]{"cal", "B"}, false));    }}