代码语言：javascript复制
import java.io.File;
import java.io.FileInputStream;
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;
public class UnZipDemo
{
public static void main(String [] args) throws IOException
{
File file = new File("F:" File.separator "SWT_Designer.zip");//要解压的文件
File outFile = null;
ZipFile zipFile = new ZipFile(file);//创建压缩文件对象
ZipInputStream zi = null;
InputStream is = null;
OutputStream os = null;
ZipEntry entry = null ; // 每一个压缩实体
zi = new ZipInputStream(new FileInputStream(file));// 实例化ZIpInputStream
String dir = file.getName().substring(0, file.getName().length()-3);//解压后的文件夹名和压缩文件名（不加拓展名）相同
while((entry=zi.getNextEntry())!=null)//得到一个压缩实体
{
System.out.println("解压缩" entry.getName() "文件。") ;
outFile = new File("F:" File.separator dir File.separator entry.getName()) ; // 定义输出的文件路径
if(!outFile.getParentFile().exists())
{
outFile.getParentFile().mkdir();
}
if(!outFile.exists())
{
if(outFile.isDirectory()||entry.isDirectory())
{
outFile.mkdir();
}else{
outFile.createNewFile();
}
}
is = zipFile.getInputStream(entry) ; // 得到每一个实体的输入流
if(outFile.isDirectory())
{
continue;
}else
{
os = new FileOutputStream(outFile);
int len = 0;
byte [] buf = new byte[1024*10];
while((len = is.read(buf))!=-1)
{
os.write(buf, 0, len);
}
is.close();
os.close();
entry.clone();
}
}
zi.close();
}
}
