Ò׽ؽØͼÈí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

javaʵÏÖͼƬÓëbase64×Ö·û´®Ö®¼äµÄת»»

package cn.com;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;
public class Base64Test
{
public static void main(String[] args)
{
String strImg = GetImageStr();
System.out.println(strImg);
GenerateImage(strImg);
}
//ͼƬת»¯³Ébase64×Ö·û´®
public static String GetImageStr()
{//½«Í¼Æ¬Îļþת»¯Îª×Ö½ÚÊý×é×Ö·û´®£¬²¢¶ÔÆä½øÐÐBase64±àÂë´¦Àí
String imgFile = "d:\\test.jpg";//´ý´¦ÀíµÄͼƬ
InputStream in = null;
byte[] data = null;
//¶ÁȡͼƬ×Ö½ÚÊý×é
try
{
in = new FileInputStream(imgFile);
data = new byte[in.available()];
in.read(data);
in.close();
}
catch (IOException e)
{
e.printStackTrace();
}
//¶Ô×Ö½ÚÊý×éBase64±àÂë
BASE64Encoder encoder = new BASE64Encoder();
return encoder.encode(data);//·µ»ØBase64±àÂë¹ýµÄ×Ö½ÚÊý×é×Ö·û´®
}

//base64×Ö·û´®×ª»¯³ÉͼƬ
public static boolean GenerateImage(String imgStr)
{ //¶Ô×Ö½ÚÊý×é×Ö·û´®½øÐÐBase64½âÂë²¢Éú³ÉͼƬ
if (imgStr == null) //ͼÏñÊý¾ÝΪ¿Õ
return false;
BASE64Decoder decoder = new BASE64Decoder();
try
{
//Base64½âÂë
byte[] b = decoder.decodeBuffer(imgStr);
for(int i=0;i<b.length;++i)
{
if(b[i]<0)
{//µ÷ÕûÒì³£Êý¾Ý
b[i]+=256;
}
}
//Éú³ÉjpegͼƬ
String imgFilePath = "d:\\222.jpg";//ÐÂÉú³ÉµÄͼƬ
OutputStream out = new FileOutputStream(imgFilePath);
out.write(b);
out.flush();
out.close();
return true;
}


Ïà¹ØÎĵµ£º

JavaÖÐÀàÓëÀàµÄ¹Øϵ

ÀàÓëÀàÖ®¼ä´æÔÚÒÔϹØϵ£º
1¡¢ ·º»¯(Generalization)
ºÜ¼òµ¥£¬¾ÍÊÇÎÒÃdz£ËµµÄ¼Ì³Ð¡£ÊÇ˵×ÓÀà»ñµÃ¸¸ÀàµÄ¹¦ÄܵÄͬʱ£¬»¹¿ÉÒÔÀ©Õ¹×Ô¼ºµÄ¹¦ÄÜ¡£
Èçͼ:
Java´úÂëÖбíÏÖΪ£ºextends ºÍ implements
2¡¢ ÒÀÀµ(Dependency)
Á½¸öÏà¶Ô¶ÀÁ¢µÄßËßË(AºÍB)£¬µ±A¸ºÔð¹¹ÔìBʱ£¬AÓëBÐγÉÒÀÀµ¹Øϵ£¬¼´AʹÓÃB¡£
Èçͼ£º
Java´úÂëÖеıíÏÖ ......

JavaÈռǣ¨Ò»£©——javaÈëÃÅ

javaÈëÃÅ
Ò»¡¢javaÊÇʲô
javaÊÇÒ»ÖÖ¼ÆËã»ú±à³ÌÓïÑÔ£¬Èí¼þ¿ª·¢Æ½Ì¨£¬Èí¼þÔËÐÐƽ̨£¬»¹ÊÇÒ»ÖÖÈí¼þ²¿Êð»·¾³¡£
¶þ¡¢javaÓÐʲô
java¼¼ÊõÓÐÈý¸ö·ÖÖ§£ºJava SE¡¢Java EEºÍJava ME¡£
Èý¡¢javaÄܸÉʲô
Ö÷ÒªÓÐÈý¸ö·½Ã棺×ÀÃæÓ¦ÓóÌÐòµÄ¿ª·¢¡¢ÆóÒµ¼¶µÄÓ¦ÓúÍǶÈëʽÉ豸¡£
ËÄ¡¢javaµÄÌصã
javaÊÇÒ»ÖÖ¼òµ¥µÄ¡¢ÃæÏò¶ÔÏóµÄ¡¢·Ö² ......

java ¶ÁдÎļþ²Ù×÷


Java¶ÁÎļþдÎļþ²Ù×÷
By Aillo on March 27, 2008 7:56 PM | 0 Comments | Previous | Next | EDIT
    ÕâÀJavaµÄ¶ÁÎļþºÍдÎļþ¶¼ÊÇ»ùÓÚ×Ö·ûÁ÷µÄ£¬Ö÷ÒªÓõ½ÏÂÃæµÄ¼¸¸öÀࣺ
1¡¢FileReader----¶ÁÈ¡×Ö·ûÁ÷
2¡¢FileWriter----дÈë×Ö·ûÁ÷
3¡¢BufferedReader----»º³åÖ¸¶¨ÎļþµÄÊäÈë
¸ÃÀàµÄ·½·¨ÓУº ......

JavaÖеļ̳Ð

  1.¼Ì³ÐµÄ»ù±¾¸ÅÄî
     µ±¶à¸öÀàÖ®¼ä´æÔÚÏàͬµÄÊôÐԺͷ½·¨Ê±£¬ÔÚ¸¸ÀàÖж¨ÒåÕâЩÏàͬµÄÊôÐԺͷ½·¨£¬ËùÓеÄ×ÓÀàÎÞÐèÖØж¨ÒåÕâЩÊôÐԺͷ½·¨£¬Ö»ÐèҪͨ¹ýextendsÓï¾äÉùÃ÷¼Ì³ÐBaseÀà¡£
   £¨1£©¼Ì³ÐµÄ¶«Î÷
      a.µ±subÀàºÍbaseÀàλÓÚͬһ¸ö°üÖÐʱ£¬su ......

JavaÓïÑÔ½Ó¿ÚÓë¼Ì³Ð±¾ÖÊ( ºÜ¾­µä)

´ó¶àÊýÈËÈÏΪ£¬½Ó¿ÚµÄÒâÒåÔÚÓÚ¶¥Ìæ¶àÖؼ̳С£ÖÚËùÖÜÖªJavaûÓÐc++ÄÇÑù¶àÖؼ̳еĻúÖÆ£¬µ«ÊÇÈ´Äܹ»Êµ×÷¶à¸ö½Ó¿Ú¡£ÆäʵÕâÑù×öÊǺÜǣǿµÄ£¬½Ó¿ÚºÍ¼Ì³ÐÊÇÍêÈ«²»Í¬µÄ¶«Î÷£¬½Ó¿ÚûÓÐÄÜÁ¦´úÌæ¶àÖؼ̳У¬Ò²Ã»ÓÐÕâ¸öÒåÎñ¡£½Ó¿ÚµÄ×÷Óã¬Ò»ÑÔÒÔ±ÎÖ®£¬¾ÍÊDZêÖ¾ÀàµÄÀà±ð£¨type of class£©¡£°Ñ²»Í¬ÀàÐ͵ÄÀà¹éÓÚ²»Í¬µÄ½Ó¿Ú£¬¿ÉÒÔ¸üºÃµÄ¹ÜÀí ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØͼ | ¸ÓICP±¸09004571ºÅ