依赖jar包
<dependency> <groupId>commons-codec</groupId> <artifactId>commons-codec</artifactId> <version>1.8</version> </dependency>
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.DataOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.nio.charset.Charset;
import java.util.zip.GZIPInputStream;
import java.util.zip.GZIPOutputStream;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;
import java.util.zip.ZipOutputStream;
import org.apache.commons.codec.Charsets;
public class ZipUtil {
/**
*
* 使用gzip进行压缩
*/
public static String gzip(String primStr) {
if (primStr == null || primStr.length() == 0) {
return primStr;
}
ByteArrayOutputStream out = new ByteArrayOutputStream();
GZIPOutputStream gzip = null;
try {
gzip = new GZIPOutputStream(out);
gzip.write(primStr.getBytes());
} catch (IOException e) {
e.printStackTrace();
} finally {
if (gzip != null) {
try {
gzip.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
return new sun.misc.BASE64Encoder().encode(out.toByteArray());
}
/**
*
* <p>
* Description:使用gzip进行解压缩
* </p>
*
* @param compressedStr
* @return
*/
public static String gunzip(String compressedStr) {
if (compressedStr == null) {
return null;
}
ByteArrayOutputStream out = new ByteArrayOutputStream();
ByteArrayInputStream in = null;
GZIPInputStream ginzip = null;
byte[] compressed = null;
String decompressed = null;
try {
compressed = new sun.misc.BASE64Decoder()
.decodeBuffer(compressedStr);
in = new ByteArrayInputStream(compressed);
ginzip = new GZIPInputStream(in);
byte[] buffer = new byte[1024];
int offset = -1;
while ((offset = ginzip.read(buffer)) != -1) {
out.write(buffer, 0, offset);
}
decompressed = out.toString();
} catch (IOException e) {
e.printStackTrace();
} finally {
if (ginzip != null) {
try {
ginzip.close();
} catch (IOException e) {
}
}
if (in != null) {
try {
in.close();
} catch (IOException e) {
}
}
if (out != null) {
try {
out.close();
} catch (IOException e) {
}
}
}
return decompressed;
}
/**
* 使用zip进行压缩
*
* @param str
* 压缩前的文本
* @return 返回压缩后的文本
*/
public static final String zip(String str) {
if (str == null)
return null;
byte[] compressed;
ByteArrayOutputStream out = null;
ZipOutputStream zout = null;
String compressedStr = null;
try {
out = new ByteArrayOutputStream();
zout = new ZipOutputStream(out);
zout.putNextEntry(new ZipEntry("0"));
zout.write(str.getBytes());
zout.closeEntry();
compressed = out.toByteArray();
compressedStr = new sun.misc.BASE64Encoder().encodeBuffer(compressed);
} catch (IOException e) {
compressed = null;
} finally {
if (zout != null) {
try {
zout.close();
} catch (IOException e) {
}
}
if (out != null) {
try {
out.close();
} catch (IOException e) {
}
}
}
return compressedStr;
}
/**
* 使用zip进行解压缩
*
* @param compressed
* 压缩后的文本
* @return 解压后的字符串
*/
public static final String unzip(String compressedStr) {
if (compressedStr == null) {
return null;
}
ByteArrayOutputStream out = null;
ByteArrayInputStream in = null;
ZipInputStream zin = null;
String decompressed = null;
try {
byte[] compressed = new sun.misc.BASE64Decoder().decodeBuffer(compressedStr);
out = new ByteArrayOutputStream();
in = new ByteArrayInputStream(compressed);
zin = new ZipInputStream(in);
zin.getNextEntry();
byte[] buffer = new byte[1024];
int offset = -1;
while ((offset = zin.read(buffer)) != -1) {
out.write(buffer, 0, offset);
}
decompressed = out.toString();
} catch (IOException e) {
decompressed = null;
} finally {
if (zin != null) {
try {
zin.close();
} catch (IOException e) {
}
}
if (in != null) {
try {
in.close();
} catch (IOException e) {
}
}
if (out != null) {
try {
out.close();
} catch (IOException e) {
}
}
}
return decompressed;
}
/**
* 解压zip格式的压缩包
*
* @param filePath
* 压缩文件路径
* @param outPath
* 输出路径
* @return 解压成功或失败标志
*/
public static Boolean fileUnZip(String filePath, String outPath) {
try {
ZipInputStream zin = new ZipInputStream(new FileInputStream(filePath));
//ZipInputStream zin = new ZipInputStream(new FileInputStream(filePath),Charsets.toCharset("utf-8"));
ZipEntry entry;
while ((entry = zin.getNextEntry()) != null) {
if (entry.isDirectory()) {
File directory = new File(outPath, entry.getName());
if (!directory.exists()) {
if (!directory.mkdirs()) {
System.exit(0);
}
}
zin.closeEntry();
} else {
File myFile = new File(entry.getName());
//如果父级目录不存在,创建目录
File parent = new File(outPath + myFile.getParent());
if(!parent.exists()){
parent.mkdirs();
}
FileOutputStream fout = new FileOutputStream(outPath+ myFile.getPath());
DataOutputStream dout = new DataOutputStream(fout);
byte[] b = new byte[1024];
int len = 0;
while ((len = zin.read(b)) != -1) {
dout.write(b, 0, len);
}
dout.close();
fout.close();
zin.closeEntry();
}
}
return true;
} catch (IOException e) {
e.printStackTrace();
return false;
}
}
public static void main(String[] args) throws Exception {
fileUnZip("C:/Users/Administrator/Desktop/ceshi/nginx.zip","C:/Users/Administrator/Desktop/");
}
}乐享:知识积累,快乐无限。