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文件缓存，保存路径等

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JiaXing_Cheng@163.com
2021-10-19 11:10:16 +08:00
parent 98244fc048
commit 1682de731d
13 changed files with 689 additions and 15 deletions
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92
ruoyi-common/src/main/java/com/ruoyi/common/utils/file/FileTypeUtils.java
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@ -1,6 +1,8 @@
package com.ruoyi.common.utils.file;
import java.io.File;
import java.util.HashMap;
import org.apache.commons.lang3.StringUtils;
/**
@ -10,6 +12,42 @@ import org.apache.commons.lang3.StringUtils;
*/
public class FileTypeUtils
{
// 缓存文件头信息-文件头信息
public static final HashMap<String, String> FILE_TYPE_MAP= new HashMap<>();
static {
FILE_TYPE_MAP.put("jpg", "FFD8FF"); //JPEG (jpg)
FILE_TYPE_MAP.put("png", "89504E47"); //PNG (png)
FILE_TYPE_MAP.put("gif", "47494638"); //GIF (gif)
FILE_TYPE_MAP.put("tif", "49492A00"); //TIFF (tif)
FILE_TYPE_MAP.put("bmp", "424D"); //Windows Bitmap (bmp)
FILE_TYPE_MAP.put("dwg", "41433130"); //CAD (dwg)
FILE_TYPE_MAP.put("html", "68746D6C3E"); //HTML (html)
FILE_TYPE_MAP.put("rtf", "7B5C727466"); //Rich Text Format (rtf)
FILE_TYPE_MAP.put("xml", "3C3F786D6C");
FILE_TYPE_MAP.put("zip", "504B0304");
FILE_TYPE_MAP.put("rar", "52617221");
FILE_TYPE_MAP.put("psd", "38425053"); //Photoshop (psd)
FILE_TYPE_MAP.put("eml", "44656C69766572792D646174653A"); //Email [thorough only] (eml)
FILE_TYPE_MAP.put("dbx", "CFAD12FEC5FD746F"); //Outlook Express (dbx)
FILE_TYPE_MAP.put("pst", "2142444E"); //Outlook (pst)
FILE_TYPE_MAP.put("xls", "D0CF11E0"); //MS Word
FILE_TYPE_MAP.put("doc", "D0CF11E0"); //MS Excel 注意：word 和 excel的文件头一样
FILE_TYPE_MAP.put("mdb", "5374616E64617264204A"); //MS Access (mdb)
FILE_TYPE_MAP.put("wpd", "FF575043"); //WordPerfect (wpd)
FILE_TYPE_MAP.put("eps", "252150532D41646F6265");
FILE_TYPE_MAP.put("ps", "252150532D41646F6265");
FILE_TYPE_MAP.put("pdf", "255044462D312E"); //Adobe Acrobat (pdf)
FILE_TYPE_MAP.put("qdf", "AC9EBD8F"); //Quicken (qdf)
FILE_TYPE_MAP.put("pwl", "E3828596"); //Windows Password (pwl)
FILE_TYPE_MAP.put("wav", "57415645"); //Wave (wav)
FILE_TYPE_MAP.put("avi", "41564920");
FILE_TYPE_MAP.put("ram", "2E7261FD"); //Real Audio (ram)
FILE_TYPE_MAP.put("rm", "2E524D46"); //Real Media (rm)
FILE_TYPE_MAP.put("mpg", "000001BA"); //
FILE_TYPE_MAP.put("mov", "6D6F6F76"); //Quicktime (mov)
FILE_TYPE_MAP.put("asf", "3026B2758E66CF11"); //Windows Media (asf)
FILE_TYPE_MAP.put("mid", "4D546864"); //MIDI (mid)
}
/**
* 获取文件类型
* <p>
@ -73,4 +111,58 @@ public class FileTypeUtils
}
return strFileExtendName;
}
/**
* 方法描述：将要读取文件头信息的文件的byte数组转换成string类型表示
*
* 要读取文件头信息的文件的byte数组
*
* @return 文件头信息
* @param src
* @return
* @author:chengjx
* @createTime:2021年10月18日 下午5:08:23
*/
public static String bytesToHexString(byte[] src) {
StringBuilder builder = new StringBuilder();
if (src == null || src.length <= 0) {
return null;
}
String hv;
for (int i = 0; i < src.length; i++) {
// 以十六进制（基数 16）无符号整数形式返回一个整数参数的字符串表示形式，并转换为大写
hv = Integer.toHexString(src[i] & 0xFF).toUpperCase();
if (hv.length() < 2) {
builder.append(0);
}
builder.append(hv);
}
return builder.toString();
}
public static String getType(byte[] bytes){
String s = bytesToHexString(bytes);
s = s.toUpperCase();
String type;
if (s.startsWith(FileTypeUtils.FILE_TYPE_MAP.get("jpg"))) {
type = "jpg";
} else if (s.startsWith(FileTypeUtils.FILE_TYPE_MAP.get("png"))) {
type = "png";
} else if (s.startsWith(FileTypeUtils.FILE_TYPE_MAP.get("gif"))) {
type = "gif";
} else if (s.startsWith(FileTypeUtils.FILE_TYPE_MAP.get("tif"))) {
type = "tif";
} else if(s.startsWith(FileTypeUtils.FILE_TYPE_MAP.get("bmp"))){
type = "bmp";
} else if(s.startsWith(FileTypeUtils.FILE_TYPE_MAP.get("pdf"))){
type = "pdf";
} else if(s.startsWith(FileTypeUtils.FILE_TYPE_MAP.get("xml"))){
type = "xml";
}else {
type = "undefined";
}
return type;
}
}