com.founder.fix.fixflow.explorer.util.FileHandle.java Source code

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Here is the source code for com.founder.fix.fixflow.explorer.util.FileHandle.java

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/**
 *  Copyright 1996-2013 Founder International Co.,Ltd.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * 
 * @author ?
 */
package com.founder.fix.fixflow.explorer.util;

import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.UnsupportedEncodingException;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;

@SuppressWarnings("unchecked")
public class FileHandle {
    private static List<FileItem> fi = new LinkedList<FileItem>();

    public static void whenUploadFileBindParameter(HttpServletRequest request, HttpServletResponse response)
            throws Exception {
        try {
            fi.clear();
            fi.removeAll(fi);
            Iterator<FileItem> iterator = createFactory(request, response);
            while (iterator.hasNext()) {
                FileItem fileItem = (FileItem) iterator.next();
                if (fileItem.isFormField()) { // ??????
                    String name = fileItem.getFieldName(); // inputname
                    String value = fileItem.getString(); // input?value
                    request.setAttribute(filterEncoding(name), filterEncoding(value));
                } else {
                    fi.add(fileItem);
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
            throw new Exception("??!");
        }
    }

    public static String updload(HttpServletRequest request, HttpServletResponse response, String autoPath,
            String showFileName) throws Exception {
        String message = "";

        // ?? 
        File uploadPath = new File(autoPath);
        if (!uploadPath.exists()) {
            uploadPath.mkdir();
        }
        for (int i = 0; i < fi.size(); i++) {
            FileItem fileItem = fi.get(i);
            if (!fileItem.isFormField()) {
                //String fieldName = fileItem.getFieldName(); // ????file  inputname
                String fileName = fileItem.getName(); // file input??
                //String contentType = fileItem.getContentType(); // 
                //long size = fileItem.getSize(); // 

                String filePath = autoPath + File.separator + showFileName;
                // org.apache.commons.fileupload.FileItem ??write?
                // fileItem.write(new File(filePath));
                // ???? ? ?
                OutputStream outputStream = new FileOutputStream(new File(filePath));// ???
                InputStream inputStream = fileItem.getInputStream();
                int length = 0;

                byte[] buf = new byte[1024];
                while ((length = inputStream.read(buf)) != -1) { // ?????
                    outputStream.write(buf, 0, length);
                }
                inputStream.close();
                outputStream.close();
                message = "(" + fileName + ")?,??:" + filePath;
            }
        }
        return message;
    }

    public static Iterator<FileItem> createFactory(HttpServletRequest request, HttpServletResponse response)
            throws Exception {
        try {
            // ?? servletFileUplaod
            DiskFileItemFactory diskFileItemFactory = new DiskFileItemFactory();
            ServletFileUpload servletFileUpload = new ServletFileUpload(diskFileItemFactory);
            // ?request??inputFileInput
            List<FileItem> fileItemList = servletFileUpload.parseRequest(request);
            return fileItemList.iterator();
        } catch (Exception e) {
            e.printStackTrace();
            throw new Exception("?!");
        }
    }

    public static String filterEncoding(String param) throws UnsupportedEncodingException {
        return new String(param.getBytes("ISO-8859-1"), "utf-8");
    }
}