java读取rar压缩包文件
时间: 2023-07-18 17:39:50 浏览: 115
要在Java中读取RAR压缩包文件,需要使用Java的第三方库来实现,比如可以使用Apache Commons Compress库或SevenZipJBinding库。
下面是使用Apache Commons Compress库来读取RAR文件的示例代码:
```java
import org.apache.commons.compress.archivers.ArchiveEntry;
import org.apache.commons.compress.archivers.ArchiveException;
import org.apache.commons.compress.archivers.ArchiveInputStream;
import org.apache.commons.compress.archivers.rar.RarArchiveInputStream;
import java.io.*;
public class RarReader {
public static void main(String[] args) throws IOException, ArchiveException {
String rarFilePath = "path/to/rar/file.rar";
File rarFile = new File(rarFilePath);
FileInputStream fileInputStream = new FileInputStream(rarFile);
ArchiveInputStream archiveInputStream = new RarArchiveInputStream(fileInputStream);
ArchiveEntry archiveEntry;
while ((archiveEntry = archiveInputStream.getNextEntry()) != null) {
if (!archiveEntry.isDirectory()) {
String fileName = archiveEntry.getName();
System.out.println("Reading file: " + fileName);
ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
byte[] buffer = new byte[1024];
int len;
while ((len = archiveInputStream.read(buffer)) > 0) {
outputStream.write(buffer, 0, len);
}
byte[] fileContent = outputStream.toByteArray();
// TODO: 处理文件内容
}
}
archiveInputStream.close();
fileInputStream.close();
}
}
```
这个示例代码使用了RarArchiveInputStream来读取RAR文件,并遍历了RAR文件中的所有文件条目。对于每个非目录文件条目,示例代码将文件内容读取到内存中,然后可以对文件内容进行处理。