java实现zip的压缩和解压

package cn.tzz.zip;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
import java.util.zip.ZipInputStream;
import java.util.zip.ZipOutputStream;

public class ZipUtils {

/**
* 文件压缩（支持一次压缩多个文件，文件存放至一个文件夹中）
* 中文名乱码，采用Apache的zip包可解决
*/
public static void ZipFile(String filepath ,String zippath) {
try {
File file = new File(filepath);// 要被压缩的文件夹
File zipFile = new File(zippath);
InputStream input = null;
ZipOutputStream zipOut = new ZipOutputStream(new FileOutputStream(zipFile));
if(file.isDirectory()){//压缩文件夹
File[] files = file.listFiles();
for(int i = 0; i < files.length; ++i){
input = new FileInputStream(files[i]);
zipOut.putNextEntry(new ZipEntry(file.getName() + File.separator + files[i].getName()));
int temp = 0;
while((temp = input.read()) != -1){
zipOut.write(temp);
}
input.close();
}
zipOut.close();
}else{//压缩单个文件
input = new FileInputStream(file);
String fileName = new String(file.getName().getBytes(), "UTF-8");
zipOut.putNextEntry(new ZipEntry(fileName));
int temp = 0;
while((temp = input.read()) != -1){
zipOut.write(temp);
}
input.close();
zipOut.close();
}
zipOut.close();
} catch (Exception e) {
e.printStackTrace();
}
}

/**  解压缩（解压缩单个文件）*/
public static void ZipContraFile(String zippath ,String outfilepath ,String filename) {
try {
File file = new File(zippath);//压缩文件路径和文件名
File outFile = new File(outfilepath);//解压后路径和文件名
ZipFile zipFile = new ZipFile(file);
ZipEntry entry = zipFile.getEntry(filename);//所解压的文件名
InputStream input = zipFile.getInputStream(entry);
OutputStream output = new FileOutputStream(outFile);
int temp = 0;
while((temp = input.read()) != -1){
output.write(temp);
}
input.close();
output.close();
} catch (Exception e) {
e.printStackTrace();
}
}

/**  解压缩（压缩文件中包含多个文件）可代替上面的方法使用。
* ZipInputStream类
* 当我们需要解压缩多个文件的时候，ZipEntry就无法使用了，
* 如果想操作更加复杂的压缩文件，我们就必须使用ZipInputStream类
* */
public static void ZipContraMultiFile(String zippath ,String outzippath){
try {
File file = new File(zippath);
File outFile = null;
ZipFile zipFile = new ZipFile(file);
ZipInputStream zipInput = new ZipInputStream(new FileInputStream(file));
ZipEntry entry = null;
InputStream input = null;
OutputStream output = null;
while((entry = zipInput.getNextEntry()) != null){
System.out.println("解压缩" + entry.getName() + "文件");
outFile = new File(outzippath + File.separator + entry.getName());
if(!outFile.getParentFile().exists()){
outFile.getParentFile().mkdir();
}
if(!outFile.exists()){
outFile.createNewFile();
}
input = zipFile.getInputStream(entry);
output = new FileOutputStream(outFile);
int temp = 0;
while((temp = input.read()) != -1){
output.write(temp);
}
input.close();
output.close();
}
} catch (Exception e) {
e.printStackTrace();
}
}

public static void main(String[] args) {
ZipFile("E:/zip/中文名.txt", "E:/zip/压缩单个文件.zip");
ZipFile("E:/zip", "E:/压缩多个文件.zip");
ZipContraFile("E:/zip/压缩单个文件.zip","E:/zip/解压文件.txt", "1.txt");
ZipContraMultiFile("E:/压缩多个文件.zip","E:/zip2");
System.out.println("********执行成功**********");
}
}