Java - 压缩现有文件 [英] Java - Zipping existing files

问题描述

可能的重复:
使用 Java 将文件附加到 zip 文件

Java 开发人员，您好

Hello Java Developers,

场景如下:

假设我有一个名为 sample.txt 的文本文件.我真正想做的是将 sample.txt 文件放入名为 TextFiles.zip 的 *.zip 文件中.

这是我目前学到的东西.

Here's the scenario:

Say I have a textfile named sample.txt. What I actually want to do is to put the sample.txt file into a *.zip file named TextFiles.zip.

Here's what I have learned so far.

try{
    File f = new File(compProperty.getZIP_OUTPUT_PATH());
    zipOut = new ZipOutputStream(new FileOutputStream(f));
    ZipEntry zipEntry = new ZipEntry("sample.txt");
    zipOut.putNextEntry(zipEntry);
    zipOut.closeEntry();
    zipOut.close();
    System.out.println("Done");

} catch ( Exception e ){
    // My catch block
}

到目前为止，我的代码创建了一个 *.zip 文件并插入了 sample.txt 文件.
我的问题是如何将现有文件插入到创建的 *.zip 文件中?
如果您的回答与 TrueZIP 有关，请发布 SSCCE.

我做了以下事情:

My code so far creates a *.zip file and insert the sample.txt file.
My question is how would I be able to insert an existing file to the created *.zip file?
If your answer has anything to do with TrueZIP, please post an SSCCE.

I have done the following:

• 谷歌搜索
• 搜索现有问题.(发现很少.没有答案.有些没有回答我的特定问题.
• 阅读TrueZip.然而，我什么也听不懂.(请理解)

• Googled
• Search for existing question. ( Found few. No answer. Some didn't answer my particular question.
• Read TrueZip. Yet, I couldn't understand a thing. ( Please do understand )

推荐答案

使用内置的 Java API.这会将文件添加到 Zip 文件，这将替换可能存在的任何现有 Zip 文件，创建一个新的 Zip 文件.

Using the inbuilt Java API. This will add a file to a Zip File, this will replace any existing Zip files that may exist, creating a new Zip file.

public class TestZip02 {

  public static void main(String[] args) {
    try {
      zip(new File("TextFiles.zip"), new File("sample.txt"));
    } catch (IOException ex) {
      ex.printStackTrace();
    }
  }

  public static void zip(File zip, File file) throws IOException {
    ZipOutputStream zos = null;
    try {
      String name = file.getName();
      zos = new ZipOutputStream(new FileOutputStream(zip));

      ZipEntry entry = new ZipEntry(name);
      zos.putNextEntry(entry);

      FileInputStream fis = null;
      try {
        fis = new FileInputStream(file);
        byte[] byteBuffer = new byte[1024];
        int bytesRead = -1;
        while ((bytesRead = fis.read(byteBuffer)) != -1) {
          zos.write(byteBuffer, 0, bytesRead);
        }
        zos.flush();
      } finally {
        try {
          fis.close();
        } catch (Exception e) {
        }
      }
      zos.closeEntry();

      zos.flush();
    } finally {
      try {
        zos.close();
      } catch (Exception e) {
      }
    }
  }
}

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