用ZIP进行多文件保存

来源：互联网发布：java方法的定义和调用编辑：程序博客网时间：2024/05/20 04:12
package Number_1802;import java.io.*;import java.util.Enumeration;import java.util.zip.*;/** * 用Zip进行多文件保存 *  * checksum 有两种类型 Adler32(速度快) , CRC32(速度慢些，但准确率高) *  * @author he *  */public class P569 {public static void main(String[] args) throws IOException {// 创建一个zip文件ZipOutputStream zos = new ZipOutputStream(new CheckedOutputStream(new FileOutputStream("F:/IOtest/b/Ziptest.zip"), new Adler32()));BufferedOutputStream out = new BufferedOutputStream(zos);zos.setComment("A test of java ZIP");System.out.println("write file");BufferedReader in = new BufferedReader(new FileReader("F:/workspace/Java Thinking002/src/Number_1802/P569.java"));// 往压缩文件中添加条目 即把P569.java添加到压缩文件中去zos.putNextEntry(new ZipEntry("P569.java"));int a;while ((a = in.read()) != -1) {out.write(a);}in.close();out.flush();out.close();// 读取解压缩文件ZipInputStream zis = new ZipInputStream(new CheckedInputStream(new FileInputStream("F:/IOtest/b/Ziptest.zip"), new Adler32()));BufferedReader in2 = new BufferedReader(new InputStreamReader(zis));ZipEntry z;while ((z = zis.getNextEntry()) != null) {System.out.println("File read: " + z);// 用下面几种方式打印均可// int c;// while ((c=in2.read())!=-1) {// System.out.print((char)c);// // System.out.write(c);// }String s;while ((s = in2.readLine()) != null) {System.out.println(s);}}ZipFile zFile = new ZipFile("F:/IOtest/b/Ziptest.zip");//返回枚举类型的条目Enumeration e = zFile.entries();while (e.hasMoreElements()) {ZipEntry entry = (ZipEntry) e.nextElement();System.out.println("压缩条目：" + entry);}}}
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