java中获取压缩文件总时间和进度百分比,请给出各种实例代码
时间: 2023-06-03 15:07:28 浏览: 92
以下是关于Java中获取压缩文件总时间和进度百分比的代码实例:
1. 使用ZipInputStream解压缩文件,并获取压缩文件总时间和进度百分比的代码示例:
```java
import java.io.*;
import java.util.zip.*;
public class ZipInputStreamDemo {
public static void main(final String[] args) throws Exception {
// 定义压缩文件
final File zipFile = new File("yourZipFile.zip");
// 定义文件输入流
final FileInputStream fileInputStream = new FileInputStream(zipFile);
// 获取压缩文件总长度
final long fileSize = zipFile.length();
// 定义ZipInputStream
final ZipInputStream zipInputStream = new ZipInputStream(fileInputStream);
ZipEntry zipEntry = null;
int count = 0;
byte[] buffer = new byte[1024];
long compressLength = 0;
// 循环读取压缩文件,计算解压缩进度百分比
while ((zipEntry = zipInputStream.getNextEntry()) != null) {
final File file = new File(zipEntry.getName());
final FileOutputStream fileOutputStream = new FileOutputStream(file);
int length = 0;
while ((length = zipInputStream.read(buffer)) > 0) {
fileOutputStream.write(buffer, 0, length);
compressLength += length;
final int progress = (int) ((compressLength * 100) / fileSize);
System.out.println("解压缩文件进度:" + progress + "%");
}
fileOutputStream.close();
count++;
System.out.println("解压缩了" + count + "个文件");
}
zipInputStream.close();
System.out.println("解压缩完成");
}
}
```
2. 使用ZipFile解压缩文件,并获取压缩文件总时间和进度百分比的代码示例:
```java
import java.io.*;
import java.util.Enumeration;
import java.util.zip.*;
public class ZipFileDemo {
public static void main(final String[] args) throws Exception {
// 定义压缩文件
final File zipFile = new File("yourZipFile.zip");
// 获取压缩文件总长度
final long fileSize = zipFile.length();
// 定义ZipFile
final ZipFile zipFile2 = new ZipFile(zipFile);
final Enumeration<? extends ZipEntry> entries = zipFile2.entries();
int count = 0;
byte[] buffer = new byte[1024];
long compressLength = 0;
// 循环读取压缩文件,计算解压缩进度百分比
while (entries.hasMoreElements()) {
final ZipEntry zipEntry = entries.nextElement();
final String fileName = zipEntry.getName();
final File file = new File(fileName);
if (zipEntry.isDirectory()) {
file.mkdir();
} else {
final InputStream inputStream = zipFile2.getInputStream(zipEntry);
final FileOutputStream fileOutputStream = new FileOutputStream(file);
int length = 0;
while ((length = inputStream.read(buffer)) > 0) {
fileOutputStream.write(buffer, 0, length);
compressLength += length;
final int progress = (int) ((compressLength * 100) / fileSize);
System.out.println("解压缩文件进度:" + progress + "%");
}
inputStream.close();
fileOutputStream.close();
}
count++;
System.out.println("解压缩了" + count + "个文件");
}
zipFile2.close();
System.out.println("解压缩完成");
}
}
```
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