package com.rratchet.scala.util;
import org.apache.commons.lang3.StringUtils;
import org.springframework.web.multipart.MultipartFile;
import javax.servlet.http.HttpServletRequest;
import java.io.*;
import java.nio.channels.FileChannel;
import java.nio.charset.Charset;
import java.util.*;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
import java.util.zip.ZipOutputStream;
/**
* 文件操作工具类
* Created by Administrator on 2018/7/10.
*/
public class FileUtil {
/**
* 压缩文件(zip)
* @param srcFiles
* @param zippath
* @throws Exception
*/
public static void Zip(List<File> srcFiles ,String zippath)throws Exception {
File file=new File(zippath);
if(!file.exists()){
file.createNewFile();
}
FileOutputStream out = new FileOutputStream(file);
long start = System.currentTimeMillis();
ZipOutputStream zos = null ;
try {
zos = new ZipOutputStream(out);
for (File srcFile : srcFiles) {
byte[] buf = new byte[4096 * 1024];
zos.putNextEntry(new ZipEntry(srcFile.getName()));
int len;
FileInputStream in = new FileInputStream(srcFile);
while ((len = in.read(buf)) != -1){
zos.write(buf, 0, len);
}
zos.closeEntry();
in.close();
}
long end = System.currentTimeMillis();
System.out.println("压缩完成,耗时:" + (end - start) +" ms");
} catch (Exception e) {
throw new RuntimeException("zip error from ZipUtils",e);
}finally{
if(zos != null){
try {
zos.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
/**
* 解压zip格式文件
*
* @param zippath zip文件路径。
* @param targetDir 要解压到的目标路径。
* @return 如果目标文件不是zip文件则返回false。
* @throws IOException 如果发生I/O错误。
*/
public static boolean decompressZip(String zippath, String targetDir) throws IOException {
File originFile=new File(zippath);
if (!targetDir.endsWith(File.separator)) {
targetDir += File.separator;
}
ZipFile zipFile = new ZipFile(originFile, Charset.forName("GBK"));
ZipEntry zipEntry;
Enumeration<? extends ZipEntry> entry = zipFile.entries();
while (entry.hasMoreElements()) {
zipEntry = entry.nextElement();
String fileName = zipEntry.getName();
File outputFile = new File(targetDir + fileName);
if (zipEntry.isDirectory()) {
forceMkdirs(outputFile);
continue;
} else if (!outputFile.getParentFile().exists()) {
forceMkdirs(outputFile.getParent());
}
OutputStream outputStream = new FileOutputStream(outputFile);
InputStream inputStream = zipFile.getInputStream(zipEntry);
int len;
byte[] buffer = new byte[8192];
while (-1 != (len = inputStream.read(buffer))) {
outputStream.write(buffer, 0, len);
}
outputStream.close();
inputStream.close();
}
zipFile.close();
return true;
}
private static File forceMkdirs(File file) {
if (!file.exists()) {
file.mkdirs();
} else if (!file.isDirectory()) {
file.delete();
file.mkdirs();
}
return file;
}
private static File forceMkdirs(String pathName) {
return forceMkdirs(new File(pathName));
}
/**
*获取路径下所有文件(递归遍历)
* @param fileList
* @param path
* @throws Exception
*/
public static void getFiles(List<File>fileList, String path){
try {
File file = new File(path);
if(file.isDirectory()){
File []files = file.listFiles();
for(File fileIndex:files){
//如果这个文件是目录,则进行递归搜索
if(fileIndex.isDirectory()){
getFiles(fileList,fileIndex.getPath());
}else {
//如果文件是普通文件,则将文件句柄放入集合中
fileList.add(fileIndex);
}
}
}
}catch (Exception e){
e.printStackTrace();
}
}
/**
* 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.length; 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();
}
/**
* 复制文件
* @param sourcefile 要复制的文件
* @param targetPath 目标文件夹路径
* @throws IOException
*/
public static void copyFile(File sourcefile, String targetPath) throws IOException {
File targetFile =new File(targetPath+"/"+sourcefile.getName());
//新建文件输入流并对它进行缓冲
FileInputStream input = new FileInputStream(sourcefile);
BufferedInputStream inbuff = new BufferedInputStream(input);
//新建文件输出流并对它进行缓冲
FileOutputStream out = new FileOutputStream(targetFile);
BufferedOutputStream outbuff = new BufferedOutputStream(out);
//缓冲数组
byte[] b = new byte[1024 * 5];
int len = 0;
while ((len = inbuff.read(b)) != -1) {
outbuff.write(b, 0, len);
}
//刷新此缓冲的输出流
outbuff.flush();
//关闭流
inbuff.close();
outbuff.close();
out.close();
input.close();
}
/**
* 移动文件
* @param sourcefile 文件
* @param targetPath 目标路径
*/
public static void moveFileAndDelete(File sourcefile, String targetPath){
try {
copyFile(sourcefile, targetPath);
sourcefile.delete();
} catch (IOException e) {
e.printStackTrace();
}
}
/**
* 移动文件(不删除)
* @param sourcefile 文件
* @param targetPath 目标路径
*/
public static void moveFile(File sourcefile, String targetPath){
try {
copyFile(sourcefile, targetPath);
} catch (IOException e) {
e.printStackTrace();
}
}
/**
* 搜索文件(模糊匹配)
* @param fileName 文件名
* @param targetPath 目标路径
* @param suffix 指定文件后缀(jpg)
* @return
*/
public static List<File> searchFile(String fileName, String targetPath,String suffix){
List<File> list=new ArrayList<>();
getFiles(list,targetPath);
if(list!=null && list.size()>0){
List<File> result=new ArrayList<>();
for (File file:list){
if(file.getName().contains(fileName)){
if(!StringUtils.isBlank(suffix)){
if(getSuffix(file.getName()).equals(suffix)){
result.add(file);
}else{
continue;
}
}else{
result.add(file);
}
}
}
return result;
}
return null;
}
/**
* 判断文件后缀
* @param fileName
* @return
*/
public static String getSuffix(String fileName){
String suffix = fileName.substring(fileName.lastIndexOf(".") + 1);
return suffix;
}
/**
* 获取文件名
* @param filePath
* @return
*/
public static String getFileName(String filePath){
String filename = filePath.substring(filePath.lastIndexOf("/") + 1);
return filename;
}
public static void main(String []args){
}
}
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