cn.jiangzeyin.util.util.file.FileUtil Maven / Gradle / Ivy
package cn.jiangzeyin.util.util.file;
import cn.jiangzeyin.util.system.util.UtilSystemCache;
import cn.jiangzeyin.util.util.RandomUtil;
import cn.jiangzeyin.util.util.StringUtil;
import org.springframework.util.Assert;
import java.io.*;
import java.math.BigDecimal;
import java.util.Calendar;
import java.util.LinkedList;
import java.util.Properties;
/**
* 文件操作工具类
*
* @author jiangzeyin
*/
public final class FileUtil {
/**
* @param path path
* @return p
* @throws IOException io
* @author jiangzeyin
*/
public static Properties getProperties(String path) throws IOException {
Properties prop = new Properties();
InputStream in = new FileInputStream(path);
prop.load(in);
return prop;
}
/**
* 格式化单位
*
* @param size size
* @return str
*/
public static String getFormatSize(long size) {
double kiloByte = size / 1024;
if (kiloByte < 1) {
return size + "Byte";
}
double megaByte = kiloByte / 1024;
if (megaByte < 1) {
BigDecimal result1 = new BigDecimal(Double.toString(kiloByte));
return result1.setScale(2, BigDecimal.ROUND_HALF_UP).toPlainString() + "KB";
}
double gigaByte = megaByte / 1024;
if (gigaByte < 1) {
BigDecimal result2 = new BigDecimal(Double.toString(megaByte));
return result2.setScale(2, BigDecimal.ROUND_HALF_UP).toPlainString() + "MB";
}
double teraBytes = gigaByte / 1024;
if (teraBytes < 1) {
BigDecimal result3 = new BigDecimal(Double.toString(gigaByte));
return result3.setScale(2, BigDecimal.ROUND_HALF_UP).toPlainString() + "GB";
}
BigDecimal result4 = new BigDecimal(teraBytes);
return result4.setScale(2, BigDecimal.ROUND_HALF_UP).toPlainString() + "TB";
}
/**
* 判断文件是否存在
*
* @param path path
* @return boolean
*/
public static boolean exists(String path) {
File f = new File(path);
return f.exists();
}
/**
* 创建文件路径
*
* @param path path
* @return boolean
* @author jiangzeyin
*/
public static boolean mkdirs(String path) {
return mkdirs(new File(path), path.endsWith("/"));
}
/**
* @param file file
* @param isPath isPath
* @return boolean
* @author jiangzeyin
*/
public static boolean mkdirs(File file, boolean isPath) {
if (file == null)
return false;
if (isPath)
return file.mkdirs();
else
return file.getParentFile().mkdirs();
}
public static boolean mkdirs(File file) {
return mkdirs(file, false);
}
/**
* 读取文件全部内容
*
* @param file file
* @param encoding encoding
* @return str
* @throws IOException io
*/
public static String readToString(File file, String encoding) throws IOException {
BufferedReader br;
StringBuffer stringBuffer = null;
br = new BufferedReader(new InputStreamReader(new FileInputStream(file), encoding));
String line = null;
stringBuffer = new StringBuffer();
while ((line = br.readLine()) != null) {
stringBuffer.append(line);
}
br.close();
return stringBuffer.toString();// 返回文件内容,默认编码
}
public static String readToString(File file) throws IOException {
return readToString(file, "UTF-8");
}
public static String getFileEncode(String path) throws IOException {
String charset = "asci";
byte[] first3Bytes = new byte[3];
boolean checked = false;
BufferedInputStream bis = new BufferedInputStream(new FileInputStream(path));
bis.mark(0);
int read = bis.read(first3Bytes, 0, 3);
if (read == -1)
return charset;
if (first3Bytes[0] == (byte) 0xFF && first3Bytes[1] == (byte) 0xFE) {
charset = "Unicode";// UTF-16LE
checked = true;
} else if (first3Bytes[0] == (byte) 0xFE && first3Bytes[1] == (byte) 0xFF) {
charset = "Unicode";// UTF-16BE
checked = true;
} else if (first3Bytes[0] == (byte) 0xEF && first3Bytes[1] == (byte) 0xBB && first3Bytes[2] == (byte) 0xBF) {
charset = "UTF8";
checked = true;
}
bis.reset();
if (!checked) {
while ((read = bis.read()) != -1) {
if (read >= 0xF0)
break;
if (0x80 <= read && read <= 0xBF) // 单独出现BF以下的，也算是GBK
break;
if (0xC0 <= read && read <= 0xDF) {
read = bis.read();
if (0x80 <= read && read <= 0xBF)
// 双字节 (0xC0 - 0xDF) (0x80 - 0xBF),也可能在GB编码内
continue;
else
break;
} else if (0xE0 <= read && read <= 0xEF) { // 也有可能出错，但是几率较小
read = bis.read();
if (0x80 <= read && read <= 0xBF) {
read = bis.read();
if (0x80 <= read && read <= 0xBF) {
charset = "UTF-8";
break;
} else
break;
} else
break;
}
}
// TextLogger.getLogger().info(loc + " " +
// Integer.toHexString(read));
}
bis.close();
return charset;
}
public static String readFile(String path) throws IOException {
// 判断文件是否存在
File file = new File(path);
if (!file.exists()) {
return null;
}
String data = null;
// 获取文件编码格式
String code = FileUtil.getFileEncode(path);
InputStreamReader isr = null;
// 根据编码格式解析文件
if ("asci".equals(code)) {
// 这里采用GBK编码，而不用环境编码格式，因为环境默认编码不等于操作系统编码
// code = System.getProperty("file.encoding");
code = "GBK";
}
isr = new InputStreamReader(new FileInputStream(file), code);
// 读取文件内容
int length = -1;
char[] buffer = new char[1024];
StringBuffer sb = new StringBuffer();
while ((length = isr.read(buffer, 0, 1024)) != -1) {
sb.append(buffer, 0, length);
}
data = new String(sb);
isr.close();
return data;
}
/**
* 读取文件
*
* @param fileName fileName
* @param encoding encoding
* @return strng
* @throws Exception e
* @author jiangzeyin
*/
public static String readToString(String fileName, String encoding) throws Exception {
File file = new File(fileName);
Long filelength = file.length();
byte[] filecontent = new byte[filelength.intValue()];
FileInputStream in = new FileInputStream(file);
in.read(filecontent);
in.close();
return new String(filecontent, encoding);
}
/**
* 读取文件全部内容
*
* 默认为UTF-8
*
* @param fileName fileName
* @return str
* @throws Exception e
* @author jiangzeyin
*/
public static String readToString(String fileName) throws Exception {
return readToString(fileName, "UTF-8");
}
/**
* 写文件
*
* @param fileName fileName
* @param content content
* @throws IOException io
* @author jiangzeyin
*/
public static void writeFile(String fileName, String content) throws IOException {
appendFileContext(fileName, content, false);
}
/**
* 添加文件内容
*
* @param fileName file
* @param content c
* @throws IOException io
* @author jiangzeyin
*/
public static void appendFileContext(String fileName, String content) throws IOException {
appendFileContext(fileName, content, true);
}
/**
* 追加文件内容
*
* @param fileName fileName
* @param content c
* @param append 是否是追加
* @throws IOException io
* @author jiangzeyin
*/
public static void appendFileContext(String fileName, String content, boolean append) throws IOException {
File file = new File(fileName);
file.getParentFile().mkdirs();
Writer out = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(file), "UTF8"));
if (content != null)
out.write(content);
out.close();
}
public static boolean writeInputStream(InputStream inputStream, String path) throws IOException {
return writeInputStream(inputStream, new File(path));
}
/**
* @param inputStream inp
* @param file file
* @return boolean
* @throws IOException io
*/
public static boolean writeInputStream(InputStream inputStream, File file) throws IOException {
Assert.notNull(inputStream);
Assert.notNull(file);
mkdirs(file);
DataOutputStream outputStream = null;
try {
outputStream = new DataOutputStream(new FileOutputStream(file));
int len = inputStream.available();
//判断长度是否大于1M
if (len <= 1024 * 1024) {
byte[] bytes = new byte[len];
inputStream.read(bytes);
outputStream.write(bytes);
} else {
int byteCount = 0;
//1M逐个读取
byte[] bytes = new byte[1024 * 1024];
while ((byteCount = inputStream.read(bytes)) != -1) {
outputStream.write(bytes, 0, byteCount);
}
}
} finally {
if (inputStream != null)
inputStream.close();
if (outputStream != null)
outputStream.close();
}
return true;
}
/**
* 判断流的字符串格式
*
* @param ins ins
* @return str
* @throws IOException io
*/
public static String getCharset(InputStream ins) throws IOException {
BufferedInputStream bin = new BufferedInputStream(ins);
int p = (bin.read() << 8) + bin.read();
String code = null;
switch (p) {
case 0xefbb:
code = "UTF-8";
break;
case 0xfffe:
code = "Unicode";
break;
case 0xfeff:
code = "UTF-16BE";
break;
default:
code = "GBK";
}
ins.close();
bin.close();
return code;
}
/**
* 获取文件 编码
*
* @param fileName fileName
* @return str
* @throws IOException io
* @author jiangzeyin
*/
public static String getFileCharset(String fileName) throws IOException {
FileInputStream ins = new FileInputStream(fileName);
return getCharset(ins);
}
public static String getFilePath(String path) {
File file = new File(path);
return getFilePath(file);
}
public static String getFilePath(File file) {
return clearPath(file.getParent());
}
/**
* 获取文件后缀
*
* @param filename file
* @return str
* @author jiangzeyin
*/
public static String getFileExt(String filename) {
String ext = "";
int index = filename.lastIndexOf(".");
if (index == -1) {
return "";
}
ext = filename.substring(index + 1);
return ext;
}
public static String clearPath(String input) {
input = input.replace('\\', '/');
return clearPath_(input);
}
/**
* 获取文件名
*
* @param filename file
* @return s
* @author jiangzeyin
*/
public static String getFileName(String filename) {
String ext = "";
int index = filename.lastIndexOf("/");
if (index == -1) {
return filename;
}
ext = filename.substring(index + 1);
return ext;
}
private static String clearPath_(String input) {
int from = 0;
int j = input.indexOf("://");
if (j != -1) {
from = j + 3;
}
int i = input.indexOf("//", from);
if (i == -1) {
return input;
}
String input_ = input.substring(0, i) + "/" + input.substring(i + 2);
return clearPath_(input_);
}
/**
* 递归删除目录下的所有文件及子目录下所有文件
*
* @param dir 将要删除的文件目录
* @return boolean Returns "true" if all deletions were successful. If a
* deletion fails, the method stops attempting to delete and returns
* "false".
*/
public static boolean deleteDir(File dir) {
if (dir.isDirectory()) {
String[] children = dir.list();
// 递归删除目录中的子目录下
for (int i = 0; i < (children != null ? children.length : 0); i++) {
boolean success = deleteDir(new File(dir, children[i]));
if (!success) {
return false;
}
}
}
// 目录此时为空，可以删除
return dir.delete();
}
/**
* 获取指定目录下的所有文件
*
* @param path path
* @return LinkedList
* @author XiangZhongBao
*/
public static LinkedList getFolderFiles(String path) {
File file = new File(path);
if (!file.exists())
return null;
if (!file.isDirectory())
return null;
File[] files = file.listFiles();
if (files == null)
return null;
LinkedList linkedList = new LinkedList<>();
for (File item : files) {
if (item.isDirectory()) {
LinkedList tempFile = getFolderFiles(item.getPath());
if (tempFile != null)
linkedList.addAll(tempFile);
} else {
linkedList.add(item);
}
}
return linkedList;
}
/**
* @param dir dir
* @return boolean
* @author jiangzeyin
*/
public static boolean deleteDir(String dir) {
return deleteDir(new File(dir));
}
/**
* 获取 文件名
*
* 格式 {path_}/年/月/日/文件名
*
* @param path_ path
* @param ext ext
* @param siteTag tag
* @return str
* @author jiangzeyin
*/
public static String getFilePathName(String siteTag, String path_, String ext) {
path_ = StringUtil.convertNULL(path_);
StringBuffer sb = new StringBuffer("/");
sb.append(path_ + "/");
Calendar cal = Calendar.getInstance();
sb.append(cal.get(Calendar.YEAR));
sb.append("/");
String f = "%02d";
f = String.format(f, (cal.get(Calendar.MONTH) + 1));
sb.append(f);
sb.append("/");
f = "%02d";
f = String.format(f, cal.get(Calendar.DATE));
sb.append(f);
sb.append("/");
// "images"
// SiteInfo image = SystemCache.getSiteInfo(siteTag);
String root = UtilSystemCache.getInstance().getLocalPath(siteTag);// image.getLocalPath();
int length = 15;
String name = RandomUtil.getBoundry(length) + "." + ext;
while (true) {
String path = FileUtil.clearPath(root + sb.toString() + name);
File file = new File(path);
file.getParentFile().mkdirs();
if (file.exists()) {
name = RandomUtil.getBoundry(++length) + "." + ext;
continue;
}
break;
}
sb.append(name);
return clearPath(sb.toString());
}
/**
* @param siteTag tag
* @param ext ext
* @param time time
* @return str
* @author jiangzeyin
*/
public static String getFilePathName(String siteTag, String ext, long time) {
StringBuilder sb = new StringBuilder("/");
Calendar cal = Calendar.getInstance();
sb.append(cal.get(Calendar.YEAR));
sb.append("/");
String f = "%02d";
f = String.format(f, (cal.get(Calendar.MONTH) + 1));
sb.append(f);
sb.append("/");
f = "%02d";
f = String.format(f, cal.get(Calendar.DATE));
sb.append(f);
sb.append("/");
// "images"
//SiteInfo image = SystemCache.getSiteInfo(siteTag);
String root = UtilSystemCache.getInstance().getLocalPath(siteTag);
String name = time + "." + ext;
while (true) {
String path = FileUtil.clearPath(root + sb.toString() + name);
mkdirs(path);
if (exists(path)) {
name = (time += RandomUtil.getRandomCode(2)) + "." + ext;
continue;
}
break;
}
sb.append(name);
return sb.toString();
}
/**
* 获取 文件名
*
* 格式 /年/月/日/文件名
*
* @param ext 文件后缀
* @param sitetag tag
* @return str
* @author jiangzeyin
*/
public static String getFilePathName(String sitetag, String ext) {
return getFilePathName(sitetag, "", ext);
}
}