java Batch compression file tool class according to file address

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;
import org.springframework.util.StringUtils;
/**
 * @program: 
 * @description:zip工具
 * @author: 
 * @create: 2023-05-23 15:39
 **/
public class ZipUtils {

    /**
     * @Title: compress
     * @Description: TODO
     * @param filePaths 需要压缩的文件地址列表(绝对路径)
     * @param zipFilePath 需要压缩到哪个zip文件(无需创建这样一个zip,只需要指定一个全路径)
     * @param keepDirStructure 压缩后目录是否保持原目录结构
     * @throws IOException
     * @return int   压缩成功的文件个数
     */
    public static int compress(List<String> filePaths, String zipFilePath,Boolean keepDirStructure) throws IOException{
        byte[] buf = new byte[1024];
        File zipFile = new File(zipFilePath);
        //zip文件不存在,则创建文件,用于压缩
        if(!zipFile.exists())
            zipFile.createNewFile();
        int fileCount = 0;//记录压缩了几个文件
        try {
            ZipOutputStream zos = new ZipOutputStream(new FileOutputStream(zipFile));
            for(int i = 0; i < filePaths.size(); i++){
                String relativePath = filePaths.get(i);
                if(StringUtils.isEmpty(relativePath)){
                    continue;
                }
                File sourceFile = new File(relativePath);//绝对路径找到file
                if(sourceFile == null || !sourceFile.exists()){
                    continue;
                }

                FileInputStream fis = new FileInputStream(sourceFile);
                if(keepDirStructure!=null && keepDirStructure){
                    //保持目录结构
                    zos.putNextEntry(new ZipEntry(relativePath));
                }else{
                    //直接放到压缩包的根目录
                    zos.putNextEntry(new ZipEntry(sourceFile.getName()));
                }
                //System.out.println("压缩当前文件:"+sourceFile.getName());
                int len;
                while((len = fis.read(buf)) > 0){
                    zos.write(buf, 0, len);
                }
                zos.closeEntry();
                fis.close();
                fileCount++;
            }
            zos.close();
            //System.out.println("压缩完成");
        } catch (Exception e) {
            e.printStackTrace();
        }
        return fileCount;
    }
    public static void main(String[] args) throws IOException {
        List<String> sourceFilePaths = new ArrayList<String>();
        sourceFilePaths.add("d:/test/test.txt");
        sourceFilePaths.add("d:/test/新建文件夹/test.txt");
        sourceFilePaths.add("d:/test/111.jpg");//试一个找不到的文件
        //指定zip存放位置(绝对路径)
        String zipTempFilePath = "D:/test/test.zip";
        //调用压缩方法
        int s = compress(sourceFilePaths, zipTempFilePath,false);
        System.out.println("成功压缩"+s+"个文件");
    }
}

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Origin blog.csdn.net/weixin_55823910/article/details/130830380
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