package rge;
import javaioIOException;
import javaioPrintWriter;
import javaio*;
import javaawt*;
import javaawtimage*;
import javaxservlet*;
import javaxservlethttp*;
import decjpeg*;
/**
* @author Liao Xue Feng
*/
public class CreateImageServlet extends HttpServlet {
protected void doGet(HttpServletRequest request HttpServletResponse response)
throws ServletException IOException
{
responsesetContentType(image/jpeg);
createImage(responsegetOutputStream());
}
private void createImage(OutputStream out) {
String text = 测试;
int width = ;
int height = textlength()/*;
BufferedImage bi = new BufferedImage(width height BufferedImageTYPE_INT_RGB);
GraphicsD g = bicreateGraphics();
// set background:
gsetBackground(ColorGREEN);
gclearRect( width height);
Font mFont = new Font(宋体FontPLAIN);//默认字体
gsetColor(new Color(IntegerparseInt()));
gsetFont(mFont);
int x=;
int y=;
int count = textlength();
int i = ;
String getone = null;
while(count >)
{
getone = textsubstring(ii+);
if(i % == )
{
y = y + ;
x = ;
}
//gdrawString(IntegertoString(i)xy);
gdrawString(getonexy);
x = x + ;
i++ ;
count;
}
// end draw:
gdispose();
biflush();
// encode:
JPEGImageEncoder encoder = JPEGCodeccreateJPEGEncoder(out);
JPEGEncodeParam param = encodergetDefaultJPEGEncodeParam(bi);
paramsetQuality(f false);
encodersetJPEGEncodeParam(param);
try {
encoderencode(bi);
}
catch(IOException ioe) {
ioeprintStackTrace();
}
}
}
indejsp页面:
<%@ page language=java import=javautil* pageEncoding=GB%>
<!DOCTYPE HTML PUBLIC //WC//DTD HTML Transitional//EN>
<html>
<head>
<title>系统测试(From:网络大本营Http://)</title>
<meta httpequiv=pragma content=nocache>
<meta httpequiv=cachecontrol content=nocache>
<meta httpequiv=expires content=>
<meta httpequiv=keywords content=keywordkeywordkeyword>
<meta httpequiv=description content=This is my page>
<!
<link rel=stylesheet type=text/css >
>
<meta httpequiv=ContentType content=text/html; charset=gb><style type=text/css>
<!
body {
backgroundcolor: #FF;
}
>
</style></head>
<body>
<img src=servlet/CreateImageServlet>
</body>
</html>
