如何用JAVA把内存里的二进制文件打包成ZIP包

在JDK中有一个zip工具类：<blockquote>java.util.zipProvides classes for reading and writing the standard ZIP and

GZIP file formats.</blockquote>使用此类可以将文件夹或者多个文件进行打包压缩 *** 作。在使用之前先了解关键方法：<blockquote>ZipEntry(String name) Creates a new zip entry with the specified name.</blockquote>使用ZipEntry的构造方法可以创建一个zip压缩文件包的实例，然后通过ZipOutputStream将待压缩的文件以禅察禅流的形式写进该压缩包中。具体实现代码如下：<pre t="code" l="java">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.util.zip.ZipEntry

import java.util.zip.ZipOutputStream

/**

* 将文件夹下面的文件

* 打包成zip压缩文件

*

* @author admin

*

*/

public final class FileToZip {

private FileToZip(){}

/**

* 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("待没绝压缩的文件目录："+sourceFilePath+"不存在.")

}else{

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" +"打包文贺尘件.")

}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=0i<sourceFiles.lengthi++){

//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

}

public static void main(String[] args){

String sourceFilePath = "D:\\TestFile"

String zipFilePath = "D:\\tmp"

String fileName = "file"

boolean flag = FileToZip.fileToZip(sourceFilePath, zipFilePath, fileName)

if(flag){

System.out.println("文件打包成功!")

}else{

System.out.println("文件打包失败!")

}

}

}

给你个例子，读取config.properties文件。

文件内容（值自己加）如下：

TestHosts =

FormalHosts =

TestConfig =

FormalConfig =

HostsPath =

ConfigPath =

读取文件的类如下：

import java.io.BufferedInputStream

import java.io.FileInputStream

import java.io.FileNotFoundException

import java.io.IOException

import java.io.InputStream

import java.io.UnsupportedEncodingException

import java.util.*

public class EvnConfig{

public static Properties PROPERTIES = new Properties()

static{

String proFilePath = System.getProperty("user.dir")+"/config.properties"

//System.out.println(proFilePath)

//InputStream propertiesStream = EvnConfig.class.getClassLoader().getResourceAsStream(proFilePath)

InputStream in = null

try {

in = new BufferedInputStream(new FileInputStream(proFilePath))

} catch (FileNotFoundException e1) {

// TODO Auto-generated catch block

e1.printStackTrace()

}

try{

PROPERTIES.load(in)

}catch(IOException e){

System.out.println("properties创建失败！"吵消)

e.printStackTrace()

}

//System.out.println("EvnConfig.testHosts:"+PROPERTIES.getProperty("TestHosts"迅此))

}

public static final String testHosts = changeCode(PROPERTIES.getProperty("TestHosts"))

public static final String formalHosts = changeCode(PROPERTIES.getProperty("FormalHosts"))

public static final StringtestConfig = changeCode(PROPERTIES.getProperty("TestConfig"))

public static final StringformalConfig = changeCode(PROPERTIES.getProperty("FormalConfig"))

public static final StringhostsPath = changeCode(PROPERTIES.getProperty("HostsPath"))

public static final StringconfigPath = changeCode(PROPERTIES.getProperty("亩碰迅ConfigPath"))

public static String changeCode(String str){

String toStr = ""

try {

//System.out.println(str + "转换...")

toStr = new String(str.getBytes("ISO-8859-1"),"GB2312")

//System.out.println(str + "转换成功！")

} catch (UnsupportedEncodingException e) {

// TODO Auto-generated catch block

System.out.println(str + "转换失败！")

e.printStackTrace()

}

return toStr

}

}

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