java将文件夹或文件进行压缩

PS:下面main方法有演示;

1,导入jar

<!-- 压缩包 -->    <dependency>        <groupId>org.apache.ant</groupId>        <artifactId>ant</artifactId>        <version>1.9.4</version>     </dependency>

如果你不是maven,那么下载

[ ant.jar包下载]

2,示例代码

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 FileCompress {    static final int BUFFER = 8192;       //初始化        private File zipFile;       public FileCompress(String pathName) {           zipFile = new File(pathName);       }      /**      * 压缩文件      * @param srcPathName     */     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());  //不加CRC32，一样可以生成文件。关于数据如何校验，请高手指点             ZipOutputStream out = new ZipOutputStream(cos);             out.setEncoding("gbk");  //如果不加此句，压缩文件依然可以生成，只是在打开和解压的时候，会显示乱码，但是还是会解压出来             String basedir = "";             compress(file, out, basedir);             out.close();         } catch (Exception e) {             throw new RuntimeException(e);         }     }    /**     * 压缩一个目录       * @param dir     * @param out     * @param basedir     */    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() + "/");        }        }     private void compress(File file, ZipOutputStream out, String basedir) {           /* 判断是目录还是文件 */          if (file.isDirectory()) {               this.compressDirectory(file, out, basedir);           } else {               this.compressFile(file, out, basedir);           }        }        /**      * 压缩一个文件      * @param file      * @param out      * @param basedir      */     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);          }     }     //main测试     public static void main(String[] args) {            FileCompress zc = new FileCompress("H://中文.zip");            zc.compress("H://test中文");  //压缩一个文件夹            System.out.println("123");    }}