File和byte[]转换
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public static byte[] FileToByte(String filePath)
{
byte[] buffer = null;
try
{
File file = new File(filePath);
FileInputStream fis = new FileInputStream(file);
ByteArrayOutputStream bos = new ByteArrayOutputStream();
byte[] b = new byte[1024];
int n;
while ((n = fis.read(b)) != -1)
{
bos.write(b, 0, n);
}
fis.close();
bos.close();
buffer = bos.toByteArray();
}
catch (FileNotFoundException e)
{
e.printStackTrace();
}
catch (IOException e)
{
e.printStackTrace();
}
return buffer;
}
public static void FileToByte(byte[] buf, String filePath, String fileName)
{
BufferedOutputStream bos = null;
FileOutputStream fos = null;
File file = null;
try
{
File dir = new File(filePath);
if (!dir.exists() && dir.isDirectory())
{
dir.mkdirs();
}
file = new File(filePath + File.separator + fileName);
fos = new FileOutputStream(file);
bos = new BufferedOutputStream(fos);
bos.write(buf);
}
catch (Exception e)
{
e.printStackTrace();
}
finally
{
if (bos != null)
{
try
{
bos.close();
}
catch (IOException e)
{
e.printStackTrace();
}
}
if (fos != null)
{
try
{
fos.close();
}
catch (IOException e)
{
e.printStackTrace();
}
}
}
}
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