Javax.imageio.IIOException: Insufficient memory (case 2) at com.sun

Question

javax.imageio.IIOException: Insufficient memory (case 2)
at com.sun.imageio.plugins.jpeg.JPEGImageWriter.writeImage(J[BIII[IIIIII[Ljavax.imageio.plugins.jpeg.JPEGQTable;Z[Ljavax.imageio.plugins.jpeg.JPEGHuffmanTable;[Ljavax.imageio.plugins.jpeg.JPEGHuffmanTable;ZZZI[I[I[I[I[IZI)Z(Native Method)
        at com.sun.imageio.plugins.jpeg.JPEGImageWriter.write(JPEGImageWriter.java:971)
        at javax.imageio.ImageWriter.write(ImageWriter.java:598)
        at javax.imageio.ImageIO.write(ImageIO.java:1450)
        at javax.imageio.ImageIO.write(ImageIO.java:1515)
        at jsp_servlet._css.__code._jspService(__code.java:145)
        at weblogic.servlet.jsp.JspBase.service(JspBase.java:34)
        at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:225)
        at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:127)
        at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:230)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               

Answer 1

<img border=0 src="code.jsp">
the content of JSP file about:
<%@ page import="java.awt.*,java.awt.image.*,java.util.*,javax.imageio.*"%>
<%@ page import="java.io.OutputStream"%>
<%@ page pageEncoding="UTF-8"%>
<%!Color getRandColor(int fc, int bc) {   
Random random = new Random();
if (fc > 255)
fc = 255;
if (bc > 255)
bc = 255;
int r = fc + random.nextInt(bc - fc);
int g = fc + random.nextInt(bc - fc);
int b = fc + random.nextInt(bc - fc);
return new Color(r, g, b);
%>
<%
try {  
out.clearBuffer(); // 加上这一句
response.setHeader("Pragma", "No-cache");
response.setHeader("Cache-Control", "no-cache");
response.setDateHeader("Expires", 0);
int width = 70, height = 20;
BufferedImage image = new BufferedImage(width, height,BufferedImage.TYPE_INT_RGB);
OutputStream os = response.getOutputStream();
Graphics g = image.getGraphics();
Random random = new Random();
//设置背景和大小
g.setColor(getRandColor(200, 250));
g.fillRect(0, 0, width, height);
//设置字体和颜色
g.setFont(new Font("Times New Roman", Font.BOLD, 20));
g.setColor(getRandColor(120, 200));
for (int i = 0; i < 50; i++) {   
int x = random.nextInt(width);
int y = random.nextInt(height);
int xl = random.nextInt(5);
int yl = random.nextInt(5);
g.drawLine(x, y, x + xl, y + yl);
String sRand = "";
for (int i = 0; i < 4; i++) {
String chose="0123456789";
String rand = String.valueOf(chose.charAt(random.nextInt(chose.length())));
sRand += rand;
g.setColor(new Color(20 + random.nextInt(110), 20 + random.nextInt(110), 20 + random.nextInt(110)));
g.drawString(rand, 15 * i + 6, 16);
session.setAttribute("rand", new String(sRand));
g.dispose();
g=null;
ImageIO.write(image, "JPEG", os);
os.flush();
os.close();
os = null;
response.flushBuffer();
out.clear();
out = pageContext.pushBody();
} catch (IllegalStateException e) {   
System.out.println(e.getMessage());
e.printStackTrace();
%>