用java程序压缩jar或war文件

来源：互联网发布：mac系统清理工具编辑：程序博客网时间：2024/05/01 15:14

前几天一直想做一个程序，保文件或文件夹以及其子目录里的文件打包到压缩文件中，在网上找到了点资料，但不完整，经过调试，终于做出了一个，与大家分享。

package syl.test;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.jar.JarEntry;
import java.util.jar.JarOutputStream;

/**
* @author SHIYL
*
*/
public class copyAllFileToJar {

public static void main(String args[]) {

String nameOfJar = "D://TEST//2//BATCH.jar";
String nameToAdd = "D://TEST//1";

        FileOutputStream jar = null;
        File file = new File(nameOfJar);
        JarOutputStream newJar = null;
        try {
            jar = new FileOutputStream(file);

newJar = new JarOutputStream(jar);

File[] addfile = (new File(nameToAdd)).listFiles();

            for (File forFile : addfile) {
                if (forFile.isFile()) {
                    writeFile(nameToAdd, newJar, forFile.getName());
                } else if (forFile.isDirectory()) {
                    copyDirectiory(nameToAdd, newJar, forFile.getName());
                }
            }

        } catch (IOException ex) {
            System.err.println("Can't access new file");
        } finally {
            try {
                newJar.close();
                jar.close();
            } catch (IOException ignored) {
                ignored.printStackTrace();
            }
        }
    }

public static void copyDirectiory(String nameToAdd, JarOutputStream newJar, String fileName) throws IOException {

        File[] file = (new File(nameToAdd + "//" + fileName)).listFiles();
        for (File forFile : file) {
            if (forFile.isFile()) {
                writeFile(nameToAdd, newJar, fileName + "//" + forFile.getName());
            } else if (forFile.isDirectory()) {
                copyDirectiory(nameToAdd, newJar, fileName + "//" + forFile.getName());
            }
        }
    }

private static void writeFile(String nameToAdd, JarOutputStream newJar,
String fileName) {

        byte buffer[] = new byte[4096];
        int bytesRead;
        File com;
        FileInputStream fis = null;
        try {
            com = new File(nameToAdd + "//" + fileName);
            fis = new FileInputStream(com);

JarEntry entry = new JarEntry(fileName);
newJar.putNextEntry(entry);

            while ((bytesRead = fis.read(buffer)) != -1) {
                newJar.write(buffer, 0, bytesRead);
            }
        } catch (IOException ex) {
            System.err.println("writeFile err : " + ex);
        } finally {
            try {
                fis.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

}

终于成功了，大家试试吧！！へ＿へ