怎样将一个图象文件写到一个文本文件里呢？？？？？？？？？？？？？？？？？？？？？？？ 是不是要转换一下，用到那些函数，给个简单例子，感谢啊 解决方案 » 免费领取超大流量手机卡，每月29元包185G流量+100分钟通话, 中国电信官方发货 BinToHex，别的Base64的也可以 Base64编码啊，这还要犹豫吗？ 不好意思，Base64编码是啥，我没听过，有详细的资料吗 Base64 3. Base64Base64和下面将要介绍的Quoted-Printable都属于MIME（多部分( multi-part)、多媒体电子邮件和 WWW 超文本的一种编码标准，用于传送诸如图形、声音和传真等非文本数据）。MIME定义在RFC1341中。Base64是现今在互联网上应用最多的一种编码，几乎所有的电子邮件软件头把它作为默认的二进制编码，它已经成了现今电子邮件编码的代名词。下面是Base64的一个例子，从例子中，您也可以看到Base64与电子邮件的的紧密联系：Content-Type: text/plain;charset="cn-gb"Content-Transfer-Encoding: BASE64CQkJICAgIKG2wtLC68vjt6i088irobcNCgnX99XfOm1vZ2Fvo6yw19TGu8a619W+o6h0ZWxuZXQ6Ly8yMDIuMTEyLjIwLjEzMjoyM6Ops8nUsaGjDQoJICAgICAgxKq438jtvP65pNf3ytKjumh0dHA6Ly9tb2dhby5iZW50aXVuLm5ldA0KCQkJRW1haWx0bzptb2dhb0AzNzEubmV0DQoJICAgKioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioqICAgICAgICAgICAgICAgDQoJICAgKiCz/cHLvMfS5Mqyw7S2vLK7tPjX36Oss/3By9fjvKPKssO0tryyu8H0z8IqDQoJICAgKioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioq你可以把它单独存成一个文件，可以取名为：mogao.eml，双击可以用OutLook打开（前两行为邮件的原始信息，从第四行开始为编码内容）。Base64的算法同Uuencode的算法很接近，也很简单：它将字符流顺序放入一个 24 位的缓冲区，缺字符的地方补零。然后将缓冲区截断成为 4 个部分，高位在先，每个部分 6 位，用下面的64个字符重新表示：“ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/”。如果输入只有一个或两个字节，那么输出将用等号“=”补足。这可以隔断附加的信息造成编码的混乱。它每行一般为76个字符。 一个Base64的类 TBase64 = Class(TObject)privateFOStream: TStream;FIStream: TStream;Public{ 输入流 }Property IStream : TStream Read FIStream Write FIStream;{ 输出流 }Property OStream : TStream Read FOStream Write FOStream;{ 编码 }Function Encode : Boolean;{ 解码 }Function Decode : Boolean;End;implementationconstSBase64 : string = '23456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz~#%&*+-';UnBase64: array[0..255] of byte =(128,128,128,128,128,128,128,128, 128,128,128,128,128,128,128,128, //0-15128,128,128,128,128,128,128,128, 128,128,128,128,128,128,128,128, //16-31128,128,128, 58,128, 59, 60,128, 128,128, 61, 62,128, 63,128,128, //32-47128,128, 0, 1, 2, 3, 4, 5, 6, 7,128,128,128,128,128,128, //48-63128, 8, 9, 10, 11, 12, 13, 14, 15,128, 16, 17, 18, 19, 20,128, //64-7921, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,128,128,128,128,128, //80-95128, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42,128, 43, 44, 45, //96-11146, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56,128,128,128, 57,128, //112-127128,128,128,128,128,128,128,128, 128,128,128,128,128,128,128,128, //128-143128,128,128,128,128,128,128,128, 128,128,128,128,128,128,128,128, //128-143128,128,128,128,128,128,128,128, 128,128,128,128,128,128,128,128, //144-159128,128,128,128,128,128,128,128, 128,128,128,128,128,128,128,128, //160-175128,128,128,128,128,128,128,128, 128,128,128,128,128,128,128,128, //176-191128,128,128,128,128,128,128,128, 128,128,128,128,128,128,128,128, //192-207128,128,128,128,128,128,128,128, 128,128,128,128,128,128,128,128, //208-223128,128,128,128,128,128,128,128, 128,128,128,128,128,128,128,128, //224-239128,128,128,128,128,128,128,128, 128,128,128,128,128,128,128,128); //240-255{ TBase64 }function TBase64.Decode: Boolean;varj, k: integer;b: byte;W, Tmp : Byte; //用于阅读流的临时变量beginResult := FALSE;If (FIStream <> Nil) And (FOStream <> Nil) ThenBegin{ 初始化}IStream.Position := 0;OStream.Position := 0;b := 0;j := 0;K := 2;while (IStream.Position < IStream.Size) And (IStream.Read(Tmp, 1) = 1) And (Char(Tmp) <> '.') DoBeginif j = 0 thenbeginb := UnBase64[Tmp];k := 2;endelse beginW := UnBase64[Tmp] or ((b shl k) and $C0);OStream.Write(W, 1);inc(k,2);end;inc(j);j := j and 3;end;End;end;function TBase64.Encode: Boolean;varSBuffer : Array [1..4] Of Byte;j, k: integer;b: byte;Tmp : Byte; {### 用于阅读流的临时变量 ###}beginResult := FALSE;If (FIStream <> Nil) And (FOStream <> Nil) ThenBegin{ 初始化 }IStream.Position := 0;OStream.Position := 0;b := 0;j := 2; k := 2;while IStream.Position < IStream.Size dobeginIf IStream.Read(Tmp, 1) = 1 ThenBeginb := b or ((Tmp and $C0) shr k);inc(k, 2);SBuffer[j] := Byte(SBase64[(Tmp And $3F) + 1]);inc(j);if j > 4 thenbeginSBuffer[1] := Byte(SBase64[b + 1]);b := 0;j := 2;k := 2;OStream.Write(SBuffer, 4);End;End;End;{ 平整数据到 SBuffer }if j <> 2 thenbeginSBuffer[j] := Ord('.');SBuffer[1] := Byte(SBase64[b + 1]);OStream.Write(SBuffer, j);endelse BeginSBuffer[1] := Ord('.');OStream.Write(SBuffer, 1);end;Result := TRUE;end;end;//--------------------------------------------------------------翻译成C++的：class TBase64 : public TObject{private:TSream FOStream;TStream FIStream;public://输入流__property TStream IStream = { read = FIStream , write = FIStream };//输出流__property TStream OStream = { read = FOStream , write = FOStream };//编码bool Encode();//解码bool Decode();};const char * SBase64 = "23456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz~#%&*+-";const unsigned char UnBase64[256] ={128,128,128,128,128,128,128,128, 128,128,128,128,128,128,128,128, //0-15128,128,128,128,128,128,128,128, 128,128,128,128,128,128,128,128, //16-31128,128,128, 58,128, 59, 60,128, 128,128, 61, 62,128, 63,128,128, //32-47128,128, 0, 1, 2, 3, 4, 5, 6, 7,128,128,128,128,128,128, //48-63128, 8, 9, 10, 11, 12, 13, 14, 15,128, 16, 17, 18, 19, 20,128, //64-7921, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,128,128,128,128,128, //80-95128, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42,128, 43, 44, 45, //96-11146, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56,128,128,128, 57,128, //112-127128,128,128,128,128,128,128,128, 128,128,128,128,128,128,128,128, //128-143128,128,128,128,128,128,128,128, 128,128,128,128,128,128,128,128, //128-143128,128,128,128,128,128,128,128, 128,128,128,128,128,128,128,128, //144-159128,128,128,128,128,128,128,128, 128,128,128,128,128,128,128,128, //160-175128,128,128,128,128,128,128,128, 128,128,128,128,128,128,128,128, //176-191128,128,128,128,128,128,128,128, 128,128,128,128,128,128,128,128, //192-207128,128,128,128,128,128,128,128, 128,128,128,128,128,128,128,128, //208-223128,128,128,128,128,128,128,128, 128,128,128,128,128,128,128,128, //224-239128,128,128,128,128,128,128,128, 128,128,128,128,128,128,128,128}; //240-255 bool TBase64::Decode(){int j , k;unsigned char b;unsigned char W , Tmp;bool Result = false;if ( FIStream != NULL && FOStream != NULL ){//初始化IStreamPosition = 0;OStreamPosition = 0;b = 0;j = 0;K = 2;while (IStream.Position < IStream.Size && (IStream.Read(Tmp, 1) == 1) && ((char)Tmp) != '.' ){if ( j == 0 ){b = UnBase64[Tmp];k = 2;}else{W = UnBase64[Tmp] | ((b >> k) & 0xC0);OStream.Write(W, 1);k+=2;}j++;j &= 3;}}return Result;}bool TBase64::Encode(){unsigned char SBuffer[4];int j , k;unsigned char b , Tmp;//用于阅读流的临时变量bool Result = false;If ( FIStream != NULL && FOStream != NULL ){//初始化IStream.Position = 0;OStream.Position = 0;b = 0;j = 2;k = 2;while ( IStream.Position < IStream.Size ){If ( IStream.Read(Tmp, 1)= = 1 ){b = b | ((Tmp & 0xC0) << k);k+=2;SBuffer[j] = (unsigned cahr)(SBase64[(Tmp & 0x3f) + 1]);j++;if ( j > 4 ){SBuffer[0] = Byte(SBase64[b]);b = 0;j = 2;k = 2;OStream.Write(SBuffer, 4);}}}//平整数据到 SBufferif ( j != 2 ){SBuffer[j] = '.';SBuffer[0] = (unsigned char)(SBase64[b + 1]);OStream.Write(SBuffer, j);}else{SBuffer[0] = '.';OStream.Write(SBuffer, 1);}Result = true;}return Result;} fastReport实用问题,在线特等...... 如果用delphi开发支持广域网的 如何将域名转换为ip StringGird是不是有限制啊？？？ 急问!在线! 真诚拜师，学习C/S结构程序设计方式. 安装PACK2出错了，怎么回事？ 有没有喜欢QuakeIIIArena的Delphier啊? 迫不及待 如何将DELPHI下用ODBC数据库的项目打包？ 看到一篇好文，转给大家看看。有点长。 怎么用用户ID来过滤数据
别的Base64的也可以
3. Base64Base64和下面将要介绍的Quoted-Printable都属于MIME（多部分( multi-part)、多媒体电子邮件和 WWW 超文本的一种编码标准，用于传送诸如图形、声音和传真等非文本数据）。MIME定义在RFC1341中。Base64是现今在互联网上应用最多的一种编码，几乎所有的电子邮件软件头把它作为默认的二进制编码，它已经成了现今电子邮件编码的代名词。下面是Base64的一个例子，从例子中，您也可以看到Base64与电子邮件的的紧密联系：Content-Type: text/plain;charset="cn-gb"Content-Transfer-Encoding: BASE64CQkJICAgIKG2wtLC68vjt6i088irobcNCgnX99XfOm1vZ2Fvo6yw19TGu8a619W+o6h0ZWxuZXQ6Ly8yMDIuMTEyLjIwLjEzMjoyM6Ops8nUsaGjDQoJICAgICAgxKq438jtvP65pNf3ytKjumh0dHA6Ly9tb2dhby5iZW50aXVuLm5ldA0KCQkJRW1haWx0bzptb2dhb0AzNzEubmV0DQoJICAgKioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioqICAgICAgICAgICAgICAgDQoJICAgKiCz/cHLvMfS5Mqyw7S2vLK7tPjX36Oss/3By9fjvKPKssO0tryyu8H0z8IqDQoJICAgKioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioq你可以把它单独存成一个文件，可以取名为：mogao.eml，双击可以用OutLook打开（前两行为邮件的原始信息，从第四行开始为编码内容）。Base64的算法同Uuencode的算法很接近，也很简单：它将字符流顺序放入一个 24 位的缓冲区，缺字符的地方补零。然后将缓冲区截断成为 4 个部分，高位在先，每个部分 6 位，用下面的64个字符重新表示：“ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/”。如果输入只有一个或两个字节，那么输出将用等号“=”补足。这可以隔断附加的信息造成编码的混乱。它每行一般为76个字符。
TBase64 = Class(TObject)privateFOStream: TStream;FIStream: TStream;Public{ 输入流 }Property IStream : TStream Read FIStream Write FIStream;{ 输出流 }Property OStream : TStream Read FOStream Write FOStream;{ 编码 }Function Encode : Boolean;{ 解码 }Function Decode : Boolean;End;implementationconstSBase64 : string = '23456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz~#%&*+-';UnBase64: array[0..255] of byte =(128,128,128,128,128,128,128,128, 128,128,128,128,128,128,128,128, //0-15128,128,128,128,128,128,128,128, 128,128,128,128,128,128,128,128, //16-31128,128,128, 58,128, 59, 60,128, 128,128, 61, 62,128, 63,128,128, //32-47128,128, 0, 1, 2, 3, 4, 5, 6, 7,128,128,128,128,128,128, //48-63128, 8, 9, 10, 11, 12, 13, 14, 15,128, 16, 17, 18, 19, 20,128, //64-7921, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,128,128,128,128,128, //80-95128, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42,128, 43, 44, 45, //96-11146, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56,128,128,128, 57,128, //112-127128,128,128,128,128,128,128,128, 128,128,128,128,128,128,128,128, //128-143128,128,128,128,128,128,128,128, 128,128,128,128,128,128,128,128, //128-143128,128,128,128,128,128,128,128, 128,128,128,128,128,128,128,128, //144-159128,128,128,128,128,128,128,128, 128,128,128,128,128,128,128,128, //160-175128,128,128,128,128,128,128,128, 128,128,128,128,128,128,128,128, //176-191128,128,128,128,128,128,128,128, 128,128,128,128,128,128,128,128, //192-207128,128,128,128,128,128,128,128, 128,128,128,128,128,128,128,128, //208-223128,128,128,128,128,128,128,128, 128,128,128,128,128,128,128,128, //224-239128,128,128,128,128,128,128,128, 128,128,128,128,128,128,128,128); //240-255{ TBase64 }function TBase64.Decode: Boolean;varj, k: integer;b: byte;W, Tmp : Byte; //用于阅读流的临时变量beginResult := FALSE;If (FIStream <> Nil) And (FOStream <> Nil) ThenBegin{ 初始化}IStream.Position := 0;OStream.Position := 0;b := 0;j := 0;K := 2;while (IStream.Position < IStream.Size) And (IStream.Read(Tmp, 1) = 1) And (Char(Tmp) <> '.') DoBeginif j = 0 thenbeginb := UnBase64[Tmp];k := 2;endelse beginW := UnBase64[Tmp] or ((b shl k) and $C0);OStream.Write(W, 1);inc(k,2);end;inc(j);j := j and 3;end;End;end;function TBase64.Encode: Boolean;varSBuffer : Array [1..4] Of Byte;j, k: integer;b: byte;Tmp : Byte; {### 用于阅读流的临时变量 ###}beginResult := FALSE;If (FIStream <> Nil) And (FOStream <> Nil) ThenBegin{ 初始化 }IStream.Position := 0;OStream.Position := 0;b := 0;j := 2; k := 2;while IStream.Position < IStream.Size dobeginIf IStream.Read(Tmp, 1) = 1 ThenBeginb := b or ((Tmp and $C0) shr k);inc(k, 2);SBuffer[j] := Byte(SBase64[(Tmp And $3F) + 1]);inc(j);if j > 4 thenbeginSBuffer[1] := Byte(SBase64[b + 1]);b := 0;j := 2;k := 2;OStream.Write(SBuffer, 4);End;End;End;{ 平整数据到 SBuffer }if j <> 2 thenbeginSBuffer[j] := Ord('.');SBuffer[1] := Byte(SBase64[b + 1]);OStream.Write(SBuffer, j);endelse BeginSBuffer[1] := Ord('.');OStream.Write(SBuffer, 1);end;Result := TRUE;end;end;//--------------------------------------------------------------翻译成C++的：class TBase64 : public TObject{private:TSream FOStream;TStream FIStream;public://输入流__property TStream IStream = { read = FIStream , write = FIStream };//输出流__property TStream OStream = { read = FOStream , write = FOStream };//编码bool Encode();//解码bool Decode();};const char * SBase64 = "23456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz~#%&*+-";const unsigned char UnBase64[256] ={128,128,128,128,128,128,128,128, 128,128,128,128,128,128,128,128, //0-15128,128,128,128,128,128,128,128, 128,128,128,128,128,128,128,128, //16-31128,128,128, 58,128, 59, 60,128, 128,128, 61, 62,128, 63,128,128, //32-47128,128, 0, 1, 2, 3, 4, 5, 6, 7,128,128,128,128,128,128, //48-63128, 8, 9, 10, 11, 12, 13, 14, 15,128, 16, 17, 18, 19, 20,128, //64-7921, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,128,128,128,128,128, //80-95128, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42,128, 43, 44, 45, //96-11146, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56,128,128,128, 57,128, //112-127128,128,128,128,128,128,128,128, 128,128,128,128,128,128,128,128, //128-143128,128,128,128,128,128,128,128, 128,128,128,128,128,128,128,128, //128-143128,128,128,128,128,128,128,128, 128,128,128,128,128,128,128,128, //144-159128,128,128,128,128,128,128,128, 128,128,128,128,128,128,128,128, //160-175128,128,128,128,128,128,128,128, 128,128,128,128,128,128,128,128, //176-191128,128,128,128,128,128,128,128, 128,128,128,128,128,128,128,128, //192-207128,128,128,128,128,128,128,128, 128,128,128,128,128,128,128,128, //208-223128,128,128,128,128,128,128,128, 128,128,128,128,128,128,128,128, //224-239128,128,128,128,128,128,128,128, 128,128,128,128,128,128,128,128}; //240-255 bool TBase64::Decode(){int j , k;unsigned char b;unsigned char W , Tmp;bool Result = false;if ( FIStream != NULL && FOStream != NULL ){//初始化IStreamPosition = 0;OStreamPosition = 0;b = 0;j = 0;K = 2;while (IStream.Position < IStream.Size && (IStream.Read(Tmp, 1) == 1) && ((char)Tmp) != '.' ){if ( j == 0 ){b = UnBase64[Tmp];k = 2;}else{W = UnBase64[Tmp] | ((b >> k) & 0xC0);OStream.Write(W, 1);k+=2;}j++;j &= 3;}}return Result;}bool TBase64::Encode(){unsigned char SBuffer[4];int j , k;unsigned char b , Tmp;//用于阅读流的临时变量bool Result = false;If ( FIStream != NULL && FOStream != NULL ){//初始化IStream.Position = 0;OStream.Position = 0;b = 0;j = 2;k = 2;while ( IStream.Position < IStream.Size ){If ( IStream.Read(Tmp, 1)= = 1 ){b = b | ((Tmp & 0xC0) << k);k+=2;SBuffer[j] = (unsigned cahr)(SBase64[(Tmp & 0x3f) + 1]);j++;if ( j > 4 ){SBuffer[0] = Byte(SBase64[b]);b = 0;j = 2;k = 2;OStream.Write(SBuffer, 4);}}}//平整数据到 SBufferif ( j != 2 ){SBuffer[j] = '.';SBuffer[0] = (unsigned char)(SBase64[b + 1]);OStream.Write(SBuffer, j);}else{SBuffer[0] = '.';OStream.Write(SBuffer, 1);}Result = true;}return Result;}