package com.jstyle.utils;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.nio.charset.Charset;
import java.util.Enumeration;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
import java.util.zip.ZipOutputStream;
public class PutZipUtil {
private PutZipUtil(){}
/**
* 将存放在sourceFilePath目录下的源文件，打包成fileName名称的zip文件，并存放到zipFilePath路径下
* @param sourceFilePath :待压缩的文件路径
* @param zipFilePath :压缩后存放路径
* @param fileName :压缩后文件的名称
* @return
*/
public static boolean fileToZip(String sourceFilePath,String zipFilePath,String fileName){
boolean flag = false;
File sourceFile = new File(sourceFilePath);
FileInputStream fis = null;
BufferedInputStream bis = null;
FileOutputStream fos = null;
ZipOutputStream zos = null;
if(sourceFile.exists() == false){
System.out.println("待压缩的文件目录："+sourceFilePath+"不存在.");
sourceFile.mkdir(); // 新建目录
}
try {
File zipFile = new File(zipFilePath + "/" + fileName +".zip");
if(zipFile.exists()){
System.out.println(zipFilePath + "目录下存在名字为:" + fileName +".zip" +"打包文件.");
}else{
File[] sourceFiles = sourceFile.listFiles();
if(null == sourceFiles || sourceFiles.length<1){
System.out.println("待压缩的文件目录：" + sourceFilePath + "里面不存在文件，无需压缩.");
}else{
fos = new FileOutputStream(zipFile);
zos = new ZipOutputStream(new BufferedOutputStream(fos));
byte[] bufs = new byte[1024*10];
for(int i=0;i<sourceFiles.length;i++){
//创建ZIP实体，并添加进压缩包
ZipEntry zipEntry = new ZipEntry(sourceFiles[i].getName());
zos.putNextEntry(zipEntry);
//读取待压缩的文件并写进压缩包里
fis = new FileInputStream(sourceFiles[i]);
bis = new BufferedInputStream(fis, 1024*10);
int read = 0;
while((read=bis.read(bufs, 0, 1024*10)) != -1){
zos.write(bufs,0,read);
}
}
flag = true;
}
}
} catch (FileNotFoundException e) {
e.printStackTrace();
throw new RuntimeException(e);
} catch (IOException e) {
e.printStackTrace();
throw new RuntimeException(e);
} finally{
//关闭流
try {
if(null != bis) bis.close();
if(null != zos) zos.close();
} catch (IOException e) {
e.printStackTrace();
throw new RuntimeException(e);
}
}
return flag;
}
/**
* 解压缩 zip
* @param srcPath 压缩包的路径
* @param exPath 压缩地址
* @throws IOException
*/
public static void zipToFile(String srcPath,String exPath) throws IOException{
int buffSize=204800;
Charset charset=Charset.forName("GBK");
ZipFile zipFile = null;
System.out.println(srcPath);
zipFile = new ZipFile(srcPath,charset);
Enumeration<ZipEntry> enumeration=(Enumeration<ZipEntry>)zipFile.entries();
while (enumeration.hasMoreElements()) {
try {
ZipEntry zipEntry=enumeration.nextElement();
if(zipEntry.isDirectory()) {//文件夹
File file=new File(exPath+zipEntry.getName());
if (!file.exists()){
file.mkdir();
}
}
else {
FileOutputStream fileOutputStream = new FileOutputStream(exPath + zipEntry.getName());
InputStream inputStream=zipFile.getInputStream(zipEntry);
int count=0,tinybuff=buffSize;
if(inputStream.available()<tinybuff){
tinybuff=inputStream.available();//读取流中可读取大小
}
byte[] datas=new byte[tinybuff];
while ((count=inputStream.read(datas,0,tinybuff))!=-1){//遇到文件结尾返回-1 否则返回实际的读数
fileOutputStream.write(datas,0,count);
if(inputStream.available()<tinybuff){
tinybuff=inputStream.available();
}else tinybuff=buffSize;
datas=new byte[tinybuff];
}
fileOutputStream.flush();//刷新缓冲
fileOutputStream.close();
}
}
catch (Exception e){
e.printStackTrace();
}
}
zipFile.close();
}
public static void main(String args[]) throws IOException{
/*//文件对象
String file = "E:\\FFOutput";//也可以是文件夹路径
//待生成的zip包名
String zipName = new Date().getTime()+RandomSaltUtil.getRandomNumber(6);
//待生成的zip保存路径
String zipFilePath = "E:\\FFOutput";
//压缩
PutZipUtil.fileToZip(file , zipFilePath , zipName);*/
String srcPath="E:\\FFOutput\\1533199844840437216.zip";
String exPath="E:\\FFOutputs\\";
PutZipUtil.zipToFile(srcPath,exPath);
}
}
