Question

这是我在压缩文件夹上的代码：

List<String> filesListInDir = new ArrayList<String>();
public void populateFilesList(File dir) throws IOException {
    File[] files = dir.listFiles();
    for(File file : files){
        if(file.isFile()) filesListInDir.add(file.getAbsolutePath());
        else populateFilesList(file);
    }
}
public void zipDirectory(File dir, String zipDirName) {
    try {
        populateFilesList(dir);
        //now zip files one by one
        //create ZipOutputStream to write to the zip file
        FileOutputStream fos = new FileOutputStream(zipDirName);
        ZipOutputStream zos = new ZipOutputStream(fos);
        for(String filePath : filesListInDir){
            System.out.println("Zipping "+filePath);
            //for ZipEntry we need to keep only relative file path, so we used substring on absolute path
            ZipEntry ze = new ZipEntry(filePath.substring(dir.getAbsolutePath().length()+1, filePath.length()));
            zos.putNextEntry(ze);
            //read the file and write to ZipOutputStream
            FileInputStream fis = new FileInputStream(filePath);
            byte[] buffer = new byte[1024];
            int len;
            while ((len = fis.read(buffer)) > 0) {
                zos.write(buffer, 0, len);
            }
            zos.closeEntry();
            fis.close();
        }
        zos.close();
        fos.close();
    } catch (IOException e) {
        e.printStackTrace();
    }
}

我的问题是我在一个目录（Main_Folder）中有2个文件夹（Folder_1和Folder_2）。当Zipping Folder_1时，zip文件包含Folder_2。如何删除Folder_1.zip上的Folder_2？

这是我的观点

Main_Folder
- 的 FOLDER_1
  - asd.sql
  - asd2.sql
  - asd3.sql
- 的 Folder_2
  - asd.jar

当Zipping Folder_1包含

时

的 Folder_1.zip
- h //此文件夹包含Folder_2上的文件。所以我需要删除这个文件夹
- asd.sql
- asd2.sql
- asd3.sql

我有什么方法或想法可以删除这个＆＃34; h＆＃34;在压缩文件夹中的文件夹？

Answer 1

我怀疑，因为你在使用instace变量filesListInDir来压缩之前存储文件你以前加载了文件，最好在zipDirectory结束时清除那个文件。我假设你没有在多线程环境中使用它，因为它会因状态变量而变得奇怪。

public void zipDirectory(File dir, String zipDirName) {
    try {
        populateFilesList(dir);
        //now zip files one by one
        //create ZipOutputStream to write to the zip file
        FileOutputStream fos = new FileOutputStream(zipDirName);
        ZipOutputStream zos = new ZipOutputStream(fos);
        for(String filePath : filesListInDir){
            System.out.println("Zipping "+filePath);
            //for ZipEntry we need to keep only relative file path, so we used substring on absolute path
            ZipEntry ze = new ZipEntry(filePath.substring(dir.getAbsolutePath().length()+1, filePath.length()));
            zos.putNextEntry(ze);
            //read the file and write to ZipOutputStream
            FileInputStream fis = new FileInputStream(filePath);
            byte[] buffer = new byte[1024];
            int len;
            while ((len = fis.read(buffer)) > 0) {
                zos.write(buffer, 0, len);
            }
            zos.closeEntry();
            fis.close();
        }
        zos.close();
        fos.close();
    } catch (IOException e) {
        e.printStackTrace();
    } finally {
        filesListInDir.clear(); // Clear the files 
    }
}

JAVA：压缩文件夹的问题

1 个答案: