将JSP在内存生成的图片显示到页面,将JSP在内存生成的图片显示到页面
【 tulaoshi.com - Java 】
Imaging_ToWeb.jsp
<%@ page autoFlush="false" import="java.awt.*,java.awt.image.*,com.sun.image.codec.jpeg.*,java.util.*"%
<%
String ImageStr = request.getParameter("ID_Text");
if(ImageStr==null || ImageStr.equals(""))
{
response.setContentType("text/html; charset=gb2312");
%
<HTML
<HEAD
<titleHttp://www.lionsky.net</title
<meta http-equiv="Content-Type" content="text/html; charset=gb2312"
</HEAD
<body
<form id="Form1" method="post"
<input type="text" id="ID_Text" name=ID_Text
<input type=submit value="GO"
</form
</body
</HTML
<%
}
else
{
out.clear();
response.setContentType("image/jpeg");
response.addHeader("pragma","NO-cache");
response.addHeader("Cache-Control","no-cache");
response.addDateHeader("Expries",0);
int width=300, height=100;
BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
Graphics g = image.getGraphics();
//以下填充背景颜色
g.setColor(Color.lightGray);
g.fillRect(0, 0, width, height);
String random="random";
//以下设置前景色
g.setColor(Color.BLACK);
g.drawString("Http://www.knowsky.com",10,20);
g.drawString("Author:Lion[lion-a@sohu.com]",10,40);
g.drawLine(10,50,290,50);
g.drawString(ImageStr,10,70);
g.dispose();
ServletOutputStream outStream = response.getOutputStream();
JPEGImageEncoder encoder =JPEGCodec.createJPEGEncoder(outStream);
encoder.encode(image);
outStream.close();
}
%
来源:http://www.tulaoshi.com/n/20160129/1485321.html
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