package testPackage;
import com.hzb.base.util.BigDecimalUtil;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.math.BigDecimal;
import java.util.stream.Stream;
/**
* @author hzb
*/
public class test {
// 进度条最大长度
private static final int total = 100;
private static final char incomplete = '░';
private static final char complete = '█';
private static StringBuilder builder = new StringBuilder();
public static void main(String[] args) throws IOException {
FileInputStream fileInputStream = null;
FileOutputStream fileOutputStream = null;
try {
Stream.generate(() -> incomplete).limit(total).forEach(builder::append);
File file = new File("E:\\test\\resource\\子账号#5.xlsx");
fileInputStream = new FileInputStream(file);
fileOutputStream = new FileOutputStream("E:\\test\\resource\\子账号#5_backUp.xlsx");
System.out.println("下载的文件：" + file.getAbsolutePath());
byte[] bytes = new byte[500000];
int len = 0;
float process = 0f;
boolean isDone = false;
while((len = fileInputStream.read(bytes)) != -1) {
Thread.sleep(1000);
fileOutputStream.write(bytes, 0 , (int)len);
process = new BigDecimal(process).add(
BigDecimalUtil.divide(new BigDecimal(len), new BigDecimal(file.length()), 2, BigDecimal.ROUND_HALF_DOWN)
.multiply(new BigDecimal(total))
).setScale(2, BigDecimal.ROUND_HALF_DOWN).floatValue();
process = process > total ? total : process;
if (total == process) {
isDone = true;
}
print(process);
}
if (!isDone) {
print(total);
}
fileOutputStream.flush();
} catch (FileNotFoundException e1) {
e1.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
} finally {
if (null != fileInputStream) {
fileInputStream.close();
}
if (null != fileOutputStream) {
fileOutputStream.close();
}
}
}
public static void print(float process) {
int processInt = (int) process;
for(int i =0; i< process; i++) {
builder.replace(i, i+1, String.valueOf(complete));
System.out.print("\r" + builder + " " + processInt + "%");
}
if (processInt == total) {
System.out.println("下载完成！");
}
}
}
