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,
- 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。
- 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
- 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");
- }
- }