import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.util.zip.CRC32;
import java.util.zip.CheckedOutputStream;
import org.apache.tools.zip.ZipEntry;
import org.apache.tools.zip.ZipOutputStream;
public class ll {
static final int BUFFER = 8192;
private File zipFile;
public ll(String pathName) {
zipFile = new File(pathName);
}
/**
* 压缩文件
* @param srcPathName
*/
public void compress(String srcPathName) {
File file = new File(srcPathName);
if (!file.exists())
throw new RuntimeException(srcPathName + "不存在！");
try {
FileOutputStream fileOutputStream = new FileOutputStream(zipFile);
CheckedOutputStream cos = new CheckedOutputStream(fileOutputStream,new CRC32());
ZipOutputStream out = new ZipOutputStream(cos);
out.setEncoding("gbk");
String basedir = "";
compress(file, out, basedir);
out.close();
} catch (Exception e) {
throw new RuntimeException(e);
}
}
private void compress(File file, ZipOutputStream out, String basedir) {
/* 判断是目录还是文件 */
if (file.isDirectory()) {
this.compressDirectory(file, out, basedir);
} else {
this.compressFile(file, out, basedir);
}
}
/** 压缩一个目录 */
private void compressDirectory(File dir, ZipOutputStream out, String basedir) {
if (!dir.exists())
return;
File[] files = dir.listFiles();
System.out.println(files.length+"--");
for (int i = 0; i <files.length; i++) {
compress(files[i], out, basedir + dir.getName() + "/");
}
}
/** 压缩一个文件 */
private void compressFile(File file, ZipOutputStream out, String basedir) {
if (!file.exists()) {
return;
}
try {
BufferedInputStream bis = new BufferedInputStream(new FileInputStream(file));
ZipEntry entry = new ZipEntry(basedir + file.getName());
out.putNextEntry(entry);
int count;
byte data[] = new byte[BUFFER];
while ((count = bis.read(data, 0, BUFFER)) != -1) {
out.write(data, 0, count);
}
bis.close();
} catch (Exception e) {
throw new RuntimeException(e);
}
}
private static String getName(String filename){
if ((filename != null) && (filename.length() > 0)) {
int q=filename.lastIndexOf("\\");
System.out.println(q);
if(filename.contains(".")){
int dot = filename.lastIndexOf(‘.‘);
if ((dot > -1) && (dot < (filename.length() - 1))&&q>-1&&(q < (filename.length() - 1))) {
return filename.substring(q+1,dot);
}
}else{
if (q>-1&&(q < (filename.length() - 1))) {
return filename.substring(q + 1);
}
}
}
return filename;
}
public static void main(String[] args) {
File f1=new File("C:\\Users\\Administrator\\Desktop\\s\\测试");
File f2=new File("C:\\Users\\Administrator\\Desktop\\s" );
String fl1=f1.getPath();
String fl2=f2.getPath();
String name=getName(fl1);
ll zc = new ll(fl2+"\\"+name+".zip");
zc.compress(fl1); //压缩一个文件夹
}
}