编写一段java代码获取压缩包内所有的文件,并修改文件名
时间: 2024-01-21 22:18:25 浏览: 63
以下是一个Java示例代码,可以获取压缩包内的所有文件并修改文件名:
```java
import java.io.*;
import java.util.zip.*;
public class ZipFileExample {
public static void main(String[] args) throws IOException {
String zipFilePath = "example.zip";
File destDir = new File("unzip");
byte[] buffer = new byte[1024];
ZipInputStream zipInputStream = new ZipInputStream(new FileInputStream(zipFilePath));
ZipEntry zipEntry = zipInputStream.getNextEntry();
while (zipEntry != null) {
File newFile = newFile(destDir, zipEntry);
if (zipEntry.isDirectory()) {
newFile.mkdirs();
} else {
FileOutputStream fileOutputStream = new FileOutputStream(newFile);
int len;
while ((len = zipInputStream.read(buffer)) > 0) {
fileOutputStream.write(buffer, 0, len);
}
fileOutputStream.close();
}
// 修改文件名
File renamedFile = new File(newFile.getParent(), "new_" + newFile.getName());
newFile.renameTo(renamedFile);
zipEntry = zipInputStream.getNextEntry();
}
zipInputStream.closeEntry();
zipInputStream.close();
}
private static File newFile(File destinationDir, ZipEntry zipEntry) throws IOException {
File destFile = new File(destinationDir, zipEntry.getName());
String destDirPath = destinationDir.getCanonicalPath();
String destFilePath = destFile.getCanonicalPath();
if (!destFilePath.startsWith(destDirPath + File.separator)) {
throw new IOException("Entry is outside of the target dir: " + zipEntry.getName());
}
return destFile;
}
}
```
这个示例代码使用`ZipInputStream`类来处理压缩包,`ZipEntry`类表示压缩包中的一个文件或目录。代码首先遍历压缩包内的所有文件,然后根据需要创建目录或文件,并将文件内容写入新文件中。最后,使用`renameTo()`方法将新文件重命名。
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