java实现zip压缩文件

网上查了许久，最后发现三种不错的方法：

1、jdk自带的包java.util.zip.ZipOutputStream，不足之处，文件（夹）名称带中文时，

出现乱码问题，实现代码如下：

/**
* 功能：把 sourceDir 目录下的所有文件进行 zip 格式的压缩，保存为指定 zip 文件
* @param sourceDir 如果是目录，eg：D:\\MyEclipse\\first\\testFile，则压缩目录下所有文件；
*      如果是文件，eg：D:\\MyEclipse\\first\\testFile\\aa.zip，则只压缩本文件
* @param zipFile 最后压缩的文件路径和名称,eg:D:\\MyEclipse\\first\\testFile\\aa.zip
*/
public File doZip(String sourceDir, String zipFilePath)
throws IOException {

  File file = new File(sourceDir);
  File zipFile = new File(zipFilePath);
  ZipOutputStream zos = null;
  try {
   // 创建写出流操作
   OutputStream os = new FileOutputStream(zipFile);
   BufferedOutputStream bos = new BufferedOutputStream(os);
   zos = new ZipOutputStream(bos);

   String basePath = null;

   // 获取目录
   if(file.isDirectory()) {
    basePath = file.getPath();
   }else {
    basePath = file.getParent();
   }

   zipFile(file, basePath, zos);
  }finally {
   if(zos != null) {
    zos.closeEntry();
    zos.close();
   }
  }

  return zipFile;
}

/**
* @param source 源文件
* @param basePath
* @param zos
*/
private void zipFile(File source, String basePath, ZipOutputStream zos)
throws IOException {
  File[] files = null;
  if (source.isDirectory()) {
   files = source.listFiles();
  } else {
   files = new File[1];
   files[0] = source;
  }

  InputStream is = null;
  String pathName;
  byte[] buf = new byte[1024];
  int length = 0;
  try{
   for(File file : files) {
    if(file.isDirectory()) {
     pathName = file.getPath().substring(basePath.length() + 1) + "/";
     zos.putNextEntry(new ZipEntry(pathName));
     zipFile(file, basePath, zos);
    }else {
     pathName = file.getPath().substring(basePath.length() + 1);
     is = new FileInputStream(file);
     BufferedInputStream bis = new BufferedInputStream(is);
     zos.putNextEntry(new ZipEntry(pathName));
     while ((length = bis.read(buf)) > 0) {
      zos.write(buf, 0, length);
     }
    }
   }
  }finally {
   if(is != null) {
    is.close();
   }
  }

}

2、使用org.apache.tools.zip.ZipOutputStream，代码如下，

Java代码：

package net.szh.zip;
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 ZipCompressor {
static final int BUFFER = 8192;
private File zipFile;
public ZipCompressor(String pathName) {
zipFile = new File(pathName);
}
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);
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()) {
System.out.println("压缩：" + basedir + file.getName());
this.compressDirectory(file, out, basedir);
} else {
System.out.println("压缩：" + basedir + file.getName());
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();
for (int i = 0; i < files.length; i++) {
/* 递归 */
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);
}
}
}

3、可以用ant中的org.apache.tools.ant.taskdefs.Zip来实现，更加简单。
Java代码

package net.szh.zip;
import java.io.File;
import org.apache.tools.ant.Project;
import org.apache.tools.ant.taskdefs.Zip;
import org.apache.tools.ant.types.FileSet;
public class ZipCompressorByAnt {
private File zipFile;
public ZipCompressorByAnt(String pathName) {
zipFile = new File(pathName);
}
public void compress(String srcPathName) {
File srcdir = new File(srcPathName);
if (!srcdir.exists())
throw new RuntimeException(srcPathName + "不存在！");
Project prj = new Project();
Zip zip = new Zip();
zip.setProject(prj);
zip.setDestFile(zipFile);
FileSet fileSet = new FileSet();
fileSet.setProject(prj);
fileSet.setDir(srcdir);
//fileSet.setIncludes("**/*.java"); 包括哪些文件或文件夹 eg:zip.setIncludes("*.java");
//fileSet.setExcludes(...); 排除哪些文件或文件夹
zip.addFileset(fileSet);
zip.execute();
}
}

测试一下
Java代码

package net.szh.zip;
public class TestZip {
public static void main(String[] args) {
ZipCompressor zc = new ZipCompressor("E:\\szhzip.zip");
zc.compress("E:\\test");
ZipCompressorByAnt zca = new ZipCompressorByAnt("E:\\szhzipant.zip");
zca.compress("E:\\test");
}
}

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java实现zip压缩文件

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