java解析压缩文件代码,java代码怎么压缩zip文件

java读取压缩文件并压缩

import java.io.BufferedInputStream;

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import java.io.BufferedReader;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.InputStreamReader;

import java.io.OutputStream;

import java.util.ArrayList;

import java.util.List;

import java.util.zip.ZipEntry;

import java.util.zip.ZipInputStream;

import java.util.zip.ZipOutputStream;

public class JZip {

public static int iCompressLevel;//压缩比取值范围为0~9

public static boolean bOverWrite;//是否覆盖同名文件取值范围为True和False

@SuppressWarnings("unchecked")

private static ArrayList AllFiles = new ArrayList();

public static String sErrorMessage;

private String zipFilePath;

public ListFile srcMap;

public JZip () {

iCompressLevel = 9;

// bOverWrite=true;

}

public JZip(String zipFilePath) throws FileNotFoundException, IOException {

this.zipFilePath = zipFilePath;

}

@SuppressWarnings("unchecked")

public static ArrayList extract (String sZipPathFile , String sDestPath) {

ArrayList AllFileName = new ArrayList();

try {

//先指定压缩档的位置和档名,建立FileInputStream对象

FileInputStream fins = new FileInputStream(sZipPathFile);

//将fins传入ZipInputStream中

ZipInputStream zins = new ZipInputStream(fins);

ZipEntry ze = null;

byte ch[] = new byte[256];

while ((ze = zins.getNextEntry()) != null) {

File zfile = new File(sDestPath + ze.getName());

File fpath = new File(zfile.getParentFile().getPath());

if (ze.isDirectory()) {

if (!zfile.exists())

zfile.mkdirs();

zins.closeEntry();

} else {

if (!fpath.exists())

fpath.mkdirs();

FileOutputStream fouts = new FileOutputStream(zfile);

int i;

AllFileName.add(zfile.getAbsolutePath());

while ((i = zins.read(ch)) != -1)

fouts.write(ch, 0, i);

zins.closeEntry();

fouts.close();

}

fins.close();

zins.close();

sErrorMessage = "OK";

} catch (Exception e) {

System.err.println("Extract error:" + e.getMessage());

sErrorMessage = e.getMessage();

}

AllFiles.clear();

return AllFileName;

}

@SuppressWarnings({ "unchecked", "static-access" })

public static void compress (String sPathFile , boolean bIsPath , String sZipPathFile) {

try {

String sPath;

//先指定压缩档的位置及档名，建立一个FileOutputStream

FileOutputStream fos = new FileOutputStream(sZipPathFile);

//建立ZipOutputStream并将fos传入

ZipOutputStream zos = new ZipOutputStream(fos);

//设置压缩比

zos.setLevel(iCompressLevel);

if (bIsPath == true) {

searchFiles(sPathFile);

sPath = sPathFile;

} else {

File myfile = new File(sPathFile);

sPath = sPathFile.substring(0, sPathFile.lastIndexOf(myfile.separator) + 1);

AllFiles.add(myfile);

}

Object[] myobject = AllFiles.toArray();

ZipEntry ze = null;

//每个档案要压缩，都要透过ZipEntry来处理

FileInputStream fis = null;

BufferedReader in = null;

//byte[] ch = new byte[256];

for (int i = 0 ; i myobject.length ; i++) {

File myfile = (File) myobject[i];

if (myfile.isFile()) {

in = new BufferedReader(new InputStreamReader(new FileInputStream(myfile.getPath()),"iso8859-1"));

//以档案的名字当Entry，也可以自己再加上额外的路径

//例如　ze=new ZipEntry("test\\"+myfiles[i].getName());

//如此压缩档内的每个档案都会加test这个路径

ze = new ZipEntry(myfile.getPath().substring((sPath).length()));

//将ZipEntry透过ZipOutputStream的putNextEntry的方式送进去处理

fis = new FileInputStream(myfile);

zos.putNextEntry(ze);

int len = 0;

//开始将原始档案读进ZipOutputStream

while ((len = in.read()) != -1) {

zos.write(len);

}

fis.close();

zos.closeEntry();

}

zos.close();

fos.close();

AllFiles.clear();

sErrorMessage = "OK";

} catch (Exception e) {

System.err.println("Compress error:" + e.getMessage());

sErrorMessage = e.getMessage();

}

这是一个递归过程，功能是检索出所有的文件名称

dirstr:目录名称

@SuppressWarnings("unchecked")

private static void searchFiles (String dirstr) {

File tempdir = new File(dirstr);

if (tempdir.exists()) {

if (tempdir.isDirectory()) {

File[] tempfiles = tempdir.listFiles();

for (int i = 0 ; i tempfiles.length ; i++) {

if (tempfiles[i].isDirectory())

searchFiles(tempfiles[i].getPath());

else {

AllFiles.add(tempfiles[i]);

}

} else {

AllFiles.add(tempdir);

}

public String getZipFilePath() {

return zipFilePath;

}

public void setZipFilePath(String zipFilePath) {

this.zipFilePath = zipFilePath;

}

/**

* 解析zip文件得到文件名

* @return

* @throws FileNotFoundException

* @throws IOException

public boolean parserZip() throws FileNotFoundException, IOException {

FileInputStream fis = new FileInputStream(zipFilePath);

ZipInputStream zis = new ZipInputStream(new BufferedInputStream(fis));

ZipEntry entry;

try {

srcMap = new ArrayListFile();

while ((entry = zis.getNextEntry()) != null) {

File file = new File(zipFilePath + File.separator + entry.getName());

srcMap.add(file);

}

zis.close();

fis.close();

return true;

} catch (IOException e) {

return false;

}

/**

* @param zipFileName 待解压缩的ZIP文件

* @param extPlace 解压后的文件夹

public static void extZipFileList(String zipFileName, String extPlace) {

try {

ZipInputStream in = new ZipInputStream(new FileInputStream(

zipFileName));

File files = new File(extPlace);

files.mkdirs();

ZipEntry entry = null;

while ((entry = in.getNextEntry()) != null) {

String entryName = entry.getName();

if (entry.isDirectory()) {

File file = new File(files + entryName);

file.mkdirs();

System.out.println("创建文件夹:" + entryName);

} else {

OutputStream os = new FileOutputStream(files+File.separator + entryName);

// Transfer bytes from the ZIP file to the output file

byte[] buf = new byte[1024];

int len;

while ((len = in.read(buf)) 0) {

os.write(buf, 0, len);

}

os.close();

in.closeEntry();

System.out.println("解压文件:" + entryName);

}

} catch (IOException e) {

}

@SuppressWarnings("static-access")

public static void main(String args[]){

}

怎样用java快速实现zip文件的压缩解压缩

package zip;

import java.io.BufferedInputStream;

import java.io.BufferedOutputStream;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileOutputStream;

import java.util.Enumeration;

import java.util.zip.CRC32;

import java.util.zip.CheckedOutputStream;

import java.util.zip.ZipEntry;

import java.util.zip.ZipFile;

import java.util.zip.ZipOutputStream;

import org.apache.commons.lang3.StringUtils;

public class ZipUtil {

/**

* 递归压缩文件夹

* @param srcRootDir 压缩文件夹根目录的子路径

* @param file 当前递归压缩的文件或目录对象

* @param zos 压缩文件存储对象

* @throws Exception

private static void zip(String srcRootDir, File file, ZipOutputStream zos) throws Exception

{

if (file == null)

{

return;

}

//如果是文件，则直接压缩该文件

if (file.isFile())

{

int count, bufferLen = 1024;

byte data[] = new byte[bufferLen];

//获取文件相对于压缩文件夹根目录的子路径

String subPath = file.getAbsolutePath();

int index = subPath.indexOf(srcRootDir);

if (index != -1)

{

subPath = subPath.substring(srcRootDir.length() + File.separator.length());

}

ZipEntry entry = new ZipEntry(subPath);

zos.putNextEntry(entry);

BufferedInputStream bis = new BufferedInputStream(new FileInputStream(file));

while ((count = bis.read(data, 0, bufferLen)) != -1)

{

zos.write(data, 0, count);

}

bis.close();

zos.closeEntry();

}

else

{

File[] childFileList = file.listFiles();

for (int n=0; nchildFileList.length; n++)

{

childFileList[n].getAbsolutePath().indexOf(file.getAbsolutePath());

zip(srcRootDir, childFileList[n], zos);

}

/**

* 对文件或文件目录进行压缩

* @param srcPath 要压缩的源文件路径。如果压缩一个文件，则为该文件的全路径；如果压缩一个目录，则为该目录的顶层目录路径

* @param zipPath 压缩文件保存的路径。注意：zipPath不能是srcPath路径下的子文件夹

* @param zipFileName 压缩文件名

* @throws Exception

public static void zip(String srcPath, String zipPath, String zipFileName) throws Exception

{

if (StringUtils.isEmpty(srcPath) || StringUtils.isEmpty(zipPath) || StringUtils.isEmpty(zipFileName))

{

throw new ParameterException(ICommonResultCode.PARAMETER_IS_NULL);

}

CheckedOutputStream cos = null;

ZipOutputStream zos = null;

try

{

File srcFile = new File(srcPath);

//判断压缩文件保存的路径是否为源文件路径的子文件夹，如果是，则抛出异常（防止无限递归压缩的发生）

if (srcFile.isDirectory() zipPath.indexOf(srcPath)!=-1)

{

throw new ParameterException(ICommonResultCode.INVALID_PARAMETER, "zipPath must not be the child directory of srcPath.");

}

//判断压缩文件保存的路径是否存在，如果不存在，则创建目录

File zipDir = new File(zipPath);

if (!zipDir.exists() || !zipDir.isDirectory())

{

zipDir.mkdirs();

}

//创建压缩文件保存的文件对象

String zipFilePath = zipPath + File.separator + zipFileName;

File zipFile = new File(zipFilePath);

if (zipFile.exists())

{

//检测文件是否允许删除，如果不允许删除，将会抛出SecurityException

SecurityManager securityManager = new SecurityManager();

securityManager.checkDelete(zipFilePath);

//删除已存在的目标文件

zipFile.delete();

}

cos = new CheckedOutputStream(new FileOutputStream(zipFile), new CRC32());

zos = new ZipOutputStream(cos);

//如果只是压缩一个文件，则需要截取该文件的父目录

String srcRootDir = srcPath;

if (srcFile.isFile())

{

int index = srcPath.lastIndexOf(File.separator);

if (index != -1)

{

srcRootDir = srcPath.substring(0, index);

}

//调用递归压缩方法进行目录或文件压缩

zip(srcRootDir, srcFile, zos);

zos.flush();

}

catch (Exception e)

{

throw e;

}

finally

{

try

{

if (zos != null)

{

zos.close();

}

catch (Exception e)

{

e.printStackTrace();

}

/**

* 解压缩zip包

* @param zipFilePath zip文件的全路径

* @param unzipFilePath 解压后的文件保存的路径

* @param includeZipFileName 解压后的文件保存的路径是否包含压缩文件的文件名。true-包含；false-不包含

@SuppressWarnings("unchecked")

public static void unzip(String zipFilePath, String unzipFilePath, boolean includeZipFileName) throws Exception

{

if (StringUtils.isEmpty(zipFilePath) || StringUtils.isEmpty(unzipFilePath))

{

throw new ParameterException(ICommonResultCode.PARAMETER_IS_NULL);

}

File zipFile = new File(zipFilePath);

//如果解压后的文件保存路径包含压缩文件的文件名，则追加该文件名到解压路径

if (includeZipFileName)

{

String fileName = zipFile.getName();

if (StringUtils.isNotEmpty(fileName))

{

fileName = fileName.substring(0, fileName.lastIndexOf("."));

}

unzipFilePath = unzipFilePath + File.separator + fileName;

}

//创建解压缩文件保存的路径

File unzipFileDir = new File(unzipFilePath);

if (!unzipFileDir.exists() || !unzipFileDir.isDirectory())

{

unzipFileDir.mkdirs();

}

//开始解压

ZipEntry entry = null;

String entryFilePath = null, entryDirPath = null;

File entryFile = null, entryDir = null;

int index = 0, count = 0, bufferSize = 1024;

byte[] buffer = new byte[bufferSize];

BufferedInputStream bis = null;

BufferedOutputStream bos = null;

ZipFile zip = new ZipFile(zipFile);

EnumerationZipEntry entries = (EnumerationZipEntry)zip.entries();

//循环对压缩包里的每一个文件进行解压

while(entries.hasMoreElements())

{

entry = entries.nextElement();

//构建压缩包中一个文件解压后保存的文件全路径

entryFilePath = unzipFilePath + File.separator + entry.getName();

//构建解压后保存的文件夹路径

index = entryFilePath.lastIndexOf(File.separator);

if (index != -1)

{

entryDirPath = entryFilePath.substring(0, index);

}

else

{

entryDirPath = "";

}

entryDir = new File(entryDirPath);

//如果文件夹路径不存在，则创建文件夹

if (!entryDir.exists() || !entryDir.isDirectory())

{

entryDir.mkdirs();

}

//创建解压文件

entryFile = new File(entryFilePath);

if (entryFile.exists())

{

//检测文件是否允许删除，如果不允许删除，将会抛出SecurityException

SecurityManager securityManager = new SecurityManager();

securityManager.checkDelete(entryFilePath);

//删除已存在的目标文件

entryFile.delete();

}

//写入文件

bos = new BufferedOutputStream(new FileOutputStream(entryFile));

bis = new BufferedInputStream(zip.getInputStream(entry));

while ((count = bis.read(buffer, 0, bufferSize)) != -1)

{

bos.write(buffer, 0, count);

}

bos.flush();

bos.close();

}

public static void main(String[] args)

{

String zipPath = "d:\\ziptest\\zipPath";

String dir = "d:\\ziptest\\rawfiles";

String zipFileName = "test.zip";

try

{

zip(dir, zipPath, zipFileName);

}

catch (Exception e)

{

e.printStackTrace();

}

String zipFilePath = "D:\\ziptest\\zipPath\\test.zip";

String unzipFilePath = "D:\\ziptest\\zipPath";

try

{

unzip(zipFilePath, unzipFilePath, true);

}

catch (Exception e)

{

e.printStackTrace();

}

简单java解压缩问题

既然目录的问题那你可以在输出流输出之前创建目录撒，

你先创建一个File对象

如你hello.zip

File f=new File("E:\\hello");

if(!f.isDirectory()){

f.mkdirs();

}

关于Java的解压缩的代码？

package com.javatest.techzero.gui;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileOutputStream;

import java.io.InputStream;

import java.io.OutputStream;

import java.util.zip.ZipEntry;

import java.util.zip.ZipFile;

import java.util.zip.ZipInputStream;

public class ZipFileDemo {

@SuppressWarnings("resource")

public static void main(String args[]) throws Exception {

File file = new File("d:" + File.separator + "test.zip");

File outFile = null;

ZipFile zipFile = new ZipFile(file);

ZipInputStream zipInput = new ZipInputStream(new FileInputStream(file));

ZipEntry entry = null;

InputStream input = null;

OutputStream out = null;

while ((entry = zipInput.getNextEntry()) != null) {

System.out.println("开始解压缩" + entry.getName() + "文件。。。");

outFile = new File("d:" + File.separator + entry.getName());

if (!outFile.getParentFile().exists()) {

outFile.getParentFile().mkdir();

}

if (!outFile.exists()) {

outFile.createNewFile();

}

input = zipFile.getInputStream(entry);

out = new FileOutputStream(outFile);

int temp = 0;

while ((temp = input.read()) != -1) {

SPAN style="WHITE-SPACE: pre" /SPAN//System.out.println(temp);

out.write(temp);

}

input.close();

out.close();

}

System.out.println("Done!");

}

仅供参考

java解压zip文件

import java.io.IOException;

import java.util.Enumeration;

import java.util.zip.ZipEntry;

/**

* 获得zip文件里的所有文件

* @author Administrator

public class ZipFile {

public ZipFile() throws IOException

{

java.util.zip.ZipFile zf = new java.util.zip.ZipFile("E:/Java/Project.zip");

Enumeration e = zf.entries();

while(e.hasMoreElements())

{

ZipEntry ze = (ZipEntry) e.nextElement();

if(!ze.isDirectory())

System.out.println(new String(ze.getName().getBytes("ISO-8859-1"), "GB2312"));

}

public static void main(String[] args) {

try {

new ZipFile();

} catch (IOException e) {

e.printStackTrace();

}

java 解压缩之后文件内容读取

您的排序与zip排序不一样。

所以第一步应该得到所有名称，然后再按照新的顺序来读

如果只是解压到某处，新的顺序一点用处都没有！

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java解析压缩文件代码,java代码怎么压缩zip文件

java读取压缩文件并压缩

怎样用java快速实现zip文件的压缩解压缩

简单java解压缩问题

关于Java的解压缩的代码？

java解压zip文件

java 解压缩之后文件内容读取

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