将多个文件压缩成zip(zip文件操作大全)
String[] fileNames = {"11.txt","22.txt"};ZipOutputStream zos = new ZipOutputStream(new FileOutputStream("tomorrow.zip"));
byte[] buff = new byte;
for(int i = 0;i < fileNames.length ; i++)
{
FileInputStream is = new FileInputStream(fileNames);
zos.putNextEntry(new ZipEntry(fileNames)); //最关键的是这一步
int len = 0;
while ((len = is.read(buff)) > 0 )
{
zos.write(buff, 0, len);
}
zos.closeEntry(); //需要注意的是这个地方
is.close();
}
zos.close();
2.罗列某个压缩文件中所有的文件名称
ZipFile zf = new ZipFile(new File("tomorrow.zip"));
for(Enumeration<ZipEntry> entrys = (Enumeration<ZipEntry>)zf.entries() ; entrys.hasMoreElements();)
{
String zipEnteyName = entrys.nextElement().getName();
System.out.println(zipEnteyName);
}
3. 解压缩ZIP文件
ZipInputStream ziStream = new ZipInputStream(new FileInputStream("tomorrow.zip"));
//主要是为了循环使用
ZipFile zFile = new ZipFile(new File("tomorrow.zip"));
for (Enumeration<ZipEntry> entries = (Enumeration<ZipEntry>)zFile.entries();entries.hasMoreElements();)
{
ZipEntry entry = ziStream.getNextEntry();
if ( null == entry)
{
break;
}
String name = entry.getName();
System.out.println(name);
FileOutputStream os = new FileOutputStream(name);
int len = 0;
byte[] buff = new byte;
while ((len = ziStream.read(buff)) > 0)
{
os.write(buff, 0, len);
}
ziStream.closeEntry();
os.close();
}
ziStream.close();
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