直接上代码
import java.io.*;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;
import java.util.zip.ZipOutputStream;
//zip操作
public class ZipDemo {
//目录名称
private static String driName =null;
//压缩后是否包含最外层的目录
private static Boolean delOutside = false;
public static String getDriName() {
return driName;
}
public static void setDriName(String driName) {
ZipDemo.driName = driName;
}
public static Boolean getDelOutside() {
return delOutside;
}
public static void setDelOutside(Boolean delOutside) {
ZipDemo.delOutside = delOutside;
}
/**
* 压缩
* @param outFile 文件输出的地址
* @param targetFile 需要压缩的目录
* @param isDelOutside 压缩后是否包含最外层的目录 true 包含 false 不包含
*/
private static void compression(String outFile, File targetFile,Boolean isDelOutside) {
System.out.println("压缩进行中");
long start = System.currentTimeMillis();
delOutside = isDelOutside;
BufferedOutputStream bos = null;
try {
if (!targetFile.exists()) {
System.out.println("文件地址不存在");
return;
}
ZipOutputStream zOut = new ZipOutputStream(new FileOutputStream(outFile));
bos = new BufferedOutputStream(zOut);
driName = targetFile.getName();
zip(zOut, targetFile, driName, bos);
} catch (FileNotFoundException e) {
throw new RuntimeException(e);
} catch (IOException e) {
throw new RuntimeException(e);
} finally {
if (bos != null) {
try {
bos.close();
} catch (IOException e) {
throw new RuntimeException(e);
}
}
}
long end = System.currentTimeMillis();
System.out.println("压缩完成，耗时：" + (end - start) + " ms");
System.out.println("压缩完成");
}
private static void zip(ZipOutputStream zOut, File targetFile, String name, BufferedOutputStream bos) throws IOException {
if (targetFile.isDirectory()) {
File[] files = targetFile.listFiles();
//判断是否为空目录
if (files.length == 0) {
zOut.putNextEntry(new ZipEntry(name + "/"));
} else {
//目录递归调用
for (File file : files) {
zip(zOut, file, name + "/" + file.getName(), bos);
}
}
} else {
if(!delOutside){
name = name.replaceFirst(driName+"/","");
}
zOut.putNextEntry(new ZipEntry(name));
InputStream in = new FileInputStream(targetFile);
BufferedInputStream bis = new BufferedInputStream(in);
//将源文件写入到zip文件中
byte[] bytes = new byte[1024];
int len = -1;
while ((len = bis.read(bytes)) != -1) {
bos.write(bytes, 0, len);
}
bis.close();
}
}
//解压
private static void decompression(String targetFileName, String parent) {
try {
File targetFile = new File(targetFileName);
if(!targetFile.exists()){
System.out.println("文件地址不存在");
}
ZipInputStream zis = new ZipInputStream(new FileInputStream(targetFile));
ZipEntry entry = null;
File file = null;
while ((entry = zis.getNextEntry()) != null && !entry.isDirectory()) {
file = new File(parent, entry.getName());
if (!file.exists()) {
new File(file.getParent()).mkdirs();
}
FileOutputStream fos = new FileOutputStream(file);
BufferedOutputStream bos = new BufferedOutputStream(fos);
int len = -1;
byte[] bytes = new byte[1024];
while ((len = zis.read(bytes)) != -1) {
bos.write(bytes, 0, len);
}
System.out.println(file.getAbsoluteFile() + "解压完成");
bos.close();
}
System.out.println("解压结束");
} catch (FileNotFoundException e) {
throw new RuntimeException(e);
} catch (IOException e) {
throw new RuntimeException(e);
}
}
public static void main(String[] args) {
//压缩调用
compression("F:\\1.zip", new File("F:\\测试"),true);
//解压调用
// decompression("F:\\1.zip", "F:\\测试\\");
}
}
注意点
压缩的方法有一个isDelOutside参数，是用来控制是否将最外层的目录压缩进去的。
例如：
目录结构
isDelOutside=true时，包含最外层的目录
isDelOutside=true时，不包含最外层的目录
