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[1024];???
for(int i = 0;i < fileNames.length ; i++)???
{???
??? FileInputStream is = new FileInputStream(fileNames[i]);???
???????
??? zos.putNextEntry(new ZipEntry(fileNames[i]));??????? //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[1024];???
??? while ((len = ziStream.read(buff)) > 0)???
??? {???
??????? os.write(buff, 0, len);???
??? }???
??? ziStream.closeEntry();???
??? os.close();???
}???
??
ziStream.close();?
