Java File Content to Byte Array getFileContentByte(InputStream inputStream, long offset, int length)

Description

get File Content Byte

License

Open Source License

Declaration

public static byte[] getFileContentByte(InputStream inputStream, long offset, int length) throws Exception 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

import java.io.InputStream;

public class Main {
    public static byte[] getFileContentByte(InputStream inputStream, long offset, int length) throws Exception {
        if (offset < 0 || length < 0) {
            throw new Exception("getFileContent param error");
        }/*from   w  ww.  j a va  2  s .co m*/

        byte[] fileContent = null;
        byte[] tempBuf = new byte[length];

        inputStream.skip(offset);
        int readLen = inputStream.read(tempBuf);
        if (readLen < 0) {
            fileContent = new byte[0];
            return fileContent;
        }
        if (readLen < length) {
            fileContent = new byte[readLen];
            System.arraycopy(tempBuf, 0, fileContent, 0, readLen);
        } else {
            fileContent = tempBuf;
        }
        return fileContent;
    }
}

Related

1. getFileContentAsByteArray(String fileName)
2. getFileContentAsByteArray(String fileName)
3. getFileContentAsBytes(String fileName)
4. getFileContentAsBytes(String fileName)
5. getFileContentsAsByteArray(String filename)