package com.nq.common.filter;
|
|
import com.nq.common.constant.Constants;
|
import com.nq.common.exception.FileNameLengthLimitExceededException;
|
import com.nq.common.exception.InvalidExtensionException;
|
import com.nq.utils.DateUtils;
|
import com.nq.utils.IdUtils;
|
import com.nq.utils.StringUtils;
|
import org.apache.tomcat.util.http.fileupload.impl.FileSizeLimitExceededException;
|
import org.springframework.web.multipart.MultipartFile;
|
|
import java.io.File;
|
import java.io.IOException;
|
|
/**
|
* 文件上传工具类
|
*
|
* @author ruoyi
|
*/
|
public class FileUploadUtils
|
{
|
/**
|
* 默认大小 50M
|
*/
|
public static final long DEFAULT_MAX_SIZE = 50 * 1024 * 1024;
|
|
/**
|
* 默认的文件名最大长度 100
|
*/
|
public static final int DEFAULT_FILE_NAME_LENGTH = 100;
|
|
public static final String PRO_FILE = "D:/ruoyi/uploadPath/upload";
|
|
/**
|
* 默认上传的地址
|
*/
|
private static String defaultBaseDir = PRO_FILE;
|
|
public static void setDefaultBaseDir(String defaultBaseDir)
|
{
|
FileUploadUtils.defaultBaseDir = defaultBaseDir;
|
}
|
|
public static String getDefaultBaseDir()
|
{
|
return defaultBaseDir;
|
}
|
|
/**
|
* 以默认配置进行文件上传
|
*
|
* @param file 上传的文件
|
* @return 文件名称
|
* @throws Exception
|
*/
|
public static final String upload(MultipartFile file) throws IOException
|
{
|
try
|
{
|
return upload(getDefaultBaseDir(), file, MimeTypeUtils.DEFAULT_ALLOWED_EXTENSION);
|
}
|
catch (Exception e)
|
{
|
throw new IOException(e.getMessage(), e);
|
}
|
}
|
|
/**
|
* 根据文件路径上传
|
*
|
* @param baseDir 相对应用的基目录
|
* @param file 上传的文件
|
* @return 文件名称
|
* @throws IOException
|
*/
|
public static final String upload(String baseDir, MultipartFile file) throws IOException
|
{
|
try
|
{
|
return upload(baseDir, file, MimeTypeUtils.DEFAULT_ALLOWED_EXTENSION);
|
}
|
catch (Exception e)
|
{
|
throw new IOException(e.getMessage(), e);
|
}
|
}
|
|
/**
|
* 文件上传
|
*
|
* @param baseDir 相对应用的基目录
|
* @param file 上传的文件
|
* @param allowedExtension 上传文件类型
|
* @return 返回上传成功的文件名
|
* @throws FileSizeLimitExceededException 如果超出最大大小
|
* @throws FileNameLengthLimitExceededException 文件名太长
|
* @throws IOException 比如读写文件出错时
|
* @throws InvalidExtensionException 文件校验异常
|
*/
|
public static final String upload(String baseDir, MultipartFile file, String[] allowedExtension)
|
throws FileSizeLimitExceededException, IOException, FileNameLengthLimitExceededException,
|
InvalidExtensionException
|
{
|
int fileNamelength = file.getOriginalFilename().length();
|
if (fileNamelength > FileUploadUtils.DEFAULT_FILE_NAME_LENGTH)
|
{
|
throw new FileNameLengthLimitExceededException(FileUploadUtils.DEFAULT_FILE_NAME_LENGTH);
|
}
|
|
|
String fileName = extractFilename(file);
|
|
File desc = getAbsoluteFile(baseDir, fileName);
|
file.transferTo(desc);
|
String pathFileName = getPathFileName(baseDir, fileName);
|
return pathFileName;
|
}
|
|
/**
|
* 编码文件名
|
*/
|
public static final String extractFilename(MultipartFile file)
|
{
|
String fileName = file.getOriginalFilename();
|
int indexOf = fileName.indexOf(".");
|
String extension = fileName.substring(indexOf);
|
fileName = DateUtils.datePath() + "/" + IdUtils.fastUUID() + "." + extension;
|
return fileName;
|
}
|
|
private static final File getAbsoluteFile(String uploadDir, String fileName) throws IOException
|
{
|
File desc = new File(uploadDir + File.separator + fileName);
|
|
if (!desc.getParentFile().exists())
|
{
|
desc.getParentFile().mkdirs();
|
}
|
if (!desc.exists())
|
{
|
desc.createNewFile();
|
}
|
return desc;
|
}
|
|
private static final String getPathFileName(String uploadDir, String fileName) throws IOException
|
{
|
int dirLastIndex = PRO_FILE.length() + 1;
|
String currentDir = StringUtils.substring(uploadDir, dirLastIndex);
|
String pathFileName = Constants.RESOURCE_PREFIX + "/" + currentDir + "/" + fileName;
|
return pathFileName;
|
}
|
|
|
/**
|
* 判断MIME类型是否是允许的MIME类型
|
*
|
* @param extension
|
* @param allowedExtension
|
* @return
|
*/
|
public static final boolean isAllowedExtension(String extension, String[] allowedExtension)
|
{
|
for (String str : allowedExtension)
|
{
|
if (str.equalsIgnoreCase(extension))
|
{
|
return true;
|
}
|
}
|
return false;
|
}
|
|
|
}
|
