C#读取二进制文件并保存16进制字符串
2013-03-21 14:06 渔者 阅读(1582) 评论(0) 编辑 收藏 举报private static readonly int CHUNK_ALL_SIZE = 308; //总的区间长度
private static readonly int CHUNK_DATA_SIZE = 288; //Key数据长度
private static readonly int CHUNK_CHECKSUM_SIZE = 20; //Key的CheckSum长度
private void btnSaveDB_Click(object sender, EventArgs e)
{
try
{
this.Cursor = Cursors.AppStarting;
//秒表统计运行时间
Stopwatch myWatch = new Stopwatch();
myWatch.Start();
int nTotalQty = 0;
int n = 0;
string sData = "";
string sKey = "";
string sKeyCheckSUM = ""; //文件中的CheckSum
string sSHA1_CheckSum = ""; //通过SHA1算法计算的CheckSum
string sql = "";
string path = "";
path = txtFilePath.Text.Trim();
string serverName = "";
string dbName = "";
int ptlt = 0;
int maxID = 0;
#region 判断输入
if (path.Length == 0)
{
this.Cursor = Cursors.Default;
MessageBox.Show("请输入FilePath");
txtFilePath.Focus();
return;
}
if (txtServerName.Text.Trim().Length == 0)
{
this.Cursor = Cursors.Default;
MessageBox.Show("请输入ServerName");
txtServerName.Focus();
return;
}
if (txtDBName.Text.Trim().Length == 0)
{
this.Cursor = Cursors.Default;
MessageBox.Show("请输入DBName");
txtDBName.Focus();
return;
}
if (this.cboPTLT.SelectedIndex < 0)
{
this.Cursor = Cursors.Default;
MessageBox.Show("请输入选择试产、量产");
cboPTLT.Focus();
return;
}
#endregion
serverName = txtServerName.Text.Trim();
dbName = txtDBName.Text.Trim();
ptlt = this.cboPTLT.SelectedIndex;
using (FileStream fs = new FileStream(path, FileMode.Open, FileAccess.Read))
{
using (BinaryReader br = new BinaryReader(fs, new ASCIIEncoding()))
{
byte[] chunk;
byte[] chunkCheck = new byte[CHUNK_DATA_SIZE];
//读取总数量，前4个byte
chunk = br.ReadBytes(4);
nTotalQty = int.Parse(ByteToHexString(chunk));
//获取一个 Key
chunk = br.ReadBytes(CHUNK_ALL_SIZE); //308个byte = Key(288个byte) + CheckSum(20个byte)
//转换成String
sData = ByteToHexString(chunk);
if (sData.Length > 0)
{
sKey = sData.Substring(0, CHUNK_DATA_SIZE * 2);
sKeyCheckSUM = sData.Substring(CHUNK_DATA_SIZE * 2);
//meiwm add 2013/3/22, 通过SHA1算法计算CheckSum
//chunkCheck = StringToHexByte(sKey); //方法1: string转成byte数组
//Array.Copy(chunk, chunkCheck, CHUNK_DATA_SIZE); //方法2: 直接获取288位的数组
System.Buffer.BlockCopy(chunk, 0, chunkCheck, 0, CHUNK_DATA_SIZE); //方法3: BlockCopy比Copy方法快
sSHA1_CheckSum = GetSHA1(chunkCheck);
if (sKeyCheckSUM != sSHA1_CheckSum)
{
MessageBox.Show("CheckSUM error!");
return;
}
}
while (chunk.Length > 0)
{
n++;
sData = "";
sKey = "";
sKeyCheckSUM = "";
chunk = br.ReadBytes(CHUNK_ALL_SIZE); //再获取一个 Key
sData = ByteToHexString(chunk);
if (sData.Length > 0)
{
sKey = sData.Substring(0, CHUNK_DATA_SIZE * 2);
sKeyCheckSUM = sData.Substring(CHUNK_DATA_SIZE * 2);
//通过SHA1算法计算CheckSum
//chunkCheck = StringToHexByte(sKey); //方法1: string转成byte数组
//Array.Copy(chunk, chunkCheck, CHUNK_DATA_SIZE); //方法2: 直接获取288位的数组
System.Buffer.BlockCopy(chunk, 0, chunkCheck, 0, CHUNK_DATA_SIZE); //方法3: BlockCopy比Copy方法快
sSHA1_CheckSum = GetSHA1(chunkCheck);
if (sKeyCheckSUM != sSHA1_CheckSum)
{
this.Cursor = Cursors.Default;
MessageBox.Show("CheckSUM error!");
return;
}
}
}
}
}
this.Cursor = Cursors.Default;
//秒表统计时间
myWatch.Stop();
long myUseTime = myWatch.ElapsedMilliseconds;
MessageBox.Show("用时: " + myUseTime.ToString() + " ms");
MessageBox.Show("SaveToDatabase OK!");
}
catch (Exception ex)
{
this.Cursor = Cursors.Default;
MessageBox.Show(ex.Message);
}
}
private void btnSaveFile_Click(object sender, EventArgs e)
{
try
{
this.Cursor = Cursors.AppStarting;
//秒表统计运行时间
Stopwatch myWatch = new Stopwatch();
myWatch.Start();
int nTotalQty = 0;
int n = 0;
string sData = "";
string sKey = "";
string sKeyCheckSUM = "";
string path = "";
path = txtFilePath.Text.Trim();
string writeFileName = "KeyData.txt";
int nSaveFileQty = 0;
#region 判断输入
if (path.Length == 0)
{
this.Cursor = Cursors.Default;
MessageBox.Show("请输入FilePath");
txtFilePath.Focus();
return;
}
if (this.txtSaveFileQty.Text.Trim().Length == 0)
{
this.Cursor = Cursors.Default;
MessageBox.Show("请输入SaveFileQty");
txtSaveFileQty.Focus();
return;
}
#endregion
nSaveFileQty = int.Parse(this.txtSaveFileQty.Text.Trim());
//使用FileStream/StreamWriter写普通格式文件
using (FileStream fswrite = new FileStream(writeFileName, FileMode.Create))
{
using (StreamWriter sw = new StreamWriter(fswrite))
{
//使用FileStream/BinaryReader读取二进制文件
using (FileStream fs = new FileStream(path, FileMode.Open, FileAccess.Read))
{
using (BinaryReader br = new BinaryReader(fs, new ASCIIEncoding()))
{
byte[] chunk;
//读取总数量，前4个byte
chunk = br.ReadBytes(4); //前4个byte是数量
nTotalQty = int.Parse(ByteToHexString(chunk));
//获取一个 Key
chunk = br.ReadBytes(CHUNK_ALL_SIZE); //308个byte = Key(288个byte) + CheckSum(20个byte)
//转换成String
sData = ByteToHexString(chunk);
//if (sData.Length > 0)
//{
// sKey = sData.Substring(0, 288 * 2);
// sKeyCheckSUM = sData.Substring(288 * 2);
//}
while (chunk.Length > 0 & n < nSaveFileQty)
{
n++;
//保存到文件
sw.WriteLine(sData);
sData = "";
sKey = "";
sKeyCheckSUM = "";
chunk = br.ReadBytes(CHUNK_ALL_SIZE); //再获取一个 Key
sData = ByteToHexString(chunk);
//if (sData.Length > 0)
//{
// sKey = sData.Substring(0, 288 * 2);
// sKeyCheckSUM = sData.Substring(288 * 2);
//}
}
}
}
}
}
this.Cursor = Cursors.Default;
//秒表统计时间
myWatch.Stop();
long myUseTime = myWatch.ElapsedMilliseconds;
MessageBox.Show("用时: " + myUseTime.ToString() + " ms");
MessageBox.Show("SaveToFile OK!");
}
catch (Exception ex)
{
this.Cursor = Cursors.Default;
MessageBox.Show(ex.Message);
}
}
/// <summary>
/// Byte数组转成String
/// </summary>
/// <param name="bytes"></param>
/// <returns></returns>
private string ByteToHexString(byte[] bytes)
{
string str = string.Empty;
if (bytes != null)
{
for (int i = 0; i < bytes.Length; i++)
{
str += bytes[i].ToString("X2");
}
}
return str;
}
/// <summary>
/// String转成Byte数组
/// </summary>
/// <param name="str"></param>
/// <returns></returns>
private byte[] StringToHexByte(string str)
{
str = str.Replace(" ", "");
if ((str.Length % 2) != 0)
{
str += "";
}
byte[] bytes = new byte[str.Length / 2];
for (int i = 0; i < bytes.Length; i++)
{
bytes[i] = Convert.ToByte(str.Substring(i * 2, 2), 16);
}
return bytes;
}
private string GetSHA1(string str)
{
StringBuilder sb = new StringBuilder();
foreach (byte b in System.Security.Cryptography.SHA1.Create().ComputeHash(Encoding.UTF8.GetBytes(str)))
{
sb.Append(b.ToString("X2"));
}
return sb.ToString();
}
/// <summary>
/// 通过byte数组使用SHA1加密算法后返回string
/// </summary>
/// <param name="bytes"></param>
/// <returns></returns>
private string GetSHA1(byte[] bytes)
{
StringBuilder sb = new StringBuilder();
foreach (byte b in System.Security.Cryptography.SHA1.Create().ComputeHash(bytes))
{
sb.Append(b.ToString("X2"));
}
return sb.ToString();
}
