import java.io.ByteArrayInputStream;

import java.io.File;

import java.io.FileInputStream;

import java.io.IOException;

import org.apache.commons.io.IOUtils;

import org.springframework.mock.web.MockMultipartFile;

import org.springframework.web.multipart.MultipartFile;

public class FileLoadUtils {

public final static String dir = "C:\\xxx\\xxx\\Documents\\";

public static MultipartFile fileToMultipart(File file) throws IOException {

FileInputStream input = new FileInputStream(file);

MultipartFile multipartFile = new MockMultipartFile("file", file.getName(), "text/plain",

IOUtils.toByteArray(input));

return multipartFile;

}

public static String uploadFile(MultipartFile uploadingFile) throws IllegalStateException, IOException {

String path = dir + "File_upload\\" + uploadingFile.getOriginalFilename();

File file = new File(path);

uploadingFile.transferTo(file);

return path;

}

public static void deleteFile(String dirPath) {

if (null == dirPath)

return;

File dir = new File(dirPath);

if (dir.exists() && dir.isDirectory()) {

File[] files = dir.listFiles();

if (null != files) {

for (File file : files) {

file.delete();

}

}

}

}

public static void readFile(MultipartFile multipartFile) throws IOException {

byte[] bytearr = multipartFile.getBytes();

ByteArrayInputStream stream = new ByteArrayInputStream(bytearr);

String myString = IOUtils.toString(stream, "UTF-8");

System.out.println(myString);

}

public static String downloadFile(MultipartFile downloadingFile) throws IOException {

String path = dir + "File_download\\" + downloadingFile.getOriginalFilename();

File file = new File(path);

if (!file.exists())

downloadingFile.transferTo(file);

return path;

}

}