本文实例为大家分享了Java压缩解压缩工具类的具体代码,供大家参考,具体内容如下
package com.wdy.tools.utils.pressuitl;
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.io.OutputStream;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
import java.util.zip.ZipInputStream;
import java.util.zip.ZipOutputStream;
import org.apache.commons.logging.Log;
import com.wdy.tools.utils.LogUtil;
/**
* 压缩/解压缩工具类(zip格式)
*
* @author wdy
* @date 2016-08-23
*/
public class PressUtil {
private static final Log log = LogUtil.getLog(PressUtil.class);
public static void main(String[] args) {
// PressUtil.ZipMultiFile("d:\\nwp_trans\\nwp_h\\", "d:\\nwp_trans\\nwp_h\\wdy.zip");
String sourceFilePath = "d:\\nwp_trans\\nwp_h\\";
String zipFilePath = "d:\\nwp_trans\\nwp_h\\";
String fileName = "wdy";
boolean flag = PressUtil.fileToZip(sourceFilePath, zipFilePath, fileName);
if(flag){
log.info("文件打包成功!");
}else{
log.info("文件打包失败!");
}
}
/**
* 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(不包括扩展名)
* @return
*/
@SuppressWarnings("resource")
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){
log.info("待压缩的文件目录:"+sourceFilePath+"不存在.");
}else{
try {
File zipFile = new File(zipFilePath + "/" + fileName +".zip");
if(zipFile.exists()){
log.info(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){
log.info("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;
}
/**
* 压缩单个文件
* @param filePath 要被压缩的文件的全路径,包含文件名d:/hello.txt
* @param zipPath 压缩后的全路径,包含文件名d:/hello.zip
*/
public static void zipOneFile(String filePath, String zipPath) {
try {
File file = new File(filePath);
File zipFile = new File(zipPath);
InputStream input = new FileInputStream(file);
ZipOutputStream zipOut = new ZipOutputStream(new FileOutputStream(zipFile));
zipOut.putNextEntry(new ZipEntry(file.getName()));
int temp = 0;
while ((temp = input.read()) != -1) {
zipOut.write(temp);
}
input.close();
zipOut.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持天达云。