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<%@ page autoFlush="false" contentType="text/html; charset=GBK"
import="java.util.*,java.io.*,java.awt.*,javax.imageio.*,java.awt.image.*,com.sun.image.codec.jpeg.*,java.util.*"%>
<%!Color getRundColor(int x, int y) {
Random random = new Random();
//ÅжÏsRGB ·ÖÁ¿
if (x > 225)
x = 225;
if (y > 225)
y = 225;
//Éú³É0.0-1.0Ö®¼äµÄÑÕɫֵ
int red = x + random.nextInt(y - x); //ºìɫɫֵ
int green = x + random.nextInt(y - x); //ÂÌɫֵ
int blue = x + random.nextInt(y - x); //À¶É«É«Öµ
//·µ»Ø´´½¨µÄÑÕÉ«¶ÔÏó
return new Color(red, green, blue); // ÓÃÖ¸¶¨µÄºìÉ«¡¢ÂÌÉ«ºÍÀ¶É«Öµ´´½¨Ò»ÖÖ²»Í¸Ã÷µÄ sRGB ÑÕÉ«£¬ÕâÈý¸öÑÕɫֵ¶¼ÔÚ 0.0 - 1.0 µÄ·¶Î§ÄÚ¡£
}%>
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response.setHeader("Cache-Control", "no-cache");
response.setDateHeader("Expires", 0);//ÉèÖÃÖ¸¶¨Ãû³ÆµÄDataÀàÐ͵ÄHTTPÍ·µÄÖµ
//ÔÚÄÚ´æÖд´½¨Í¼Ïó
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