本文整理汇总了Java中com.google.code.kaptcha.Producer.createImage方法的典型用法代码示例。如果您正苦于以下问题：Java Producer.createImage方法的具体用法？Java Producer.createImage怎么用？Java Producer.createImage使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类com.google.code.kaptcha.Producer的用法示例。
在下文中一共展示了Producer.createImage方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: execute
import com.google.code.kaptcha.Producer; //导入方法依赖的package包/类
public void execute(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException{
response.setDateHeader("Expires", 0);
// Set standard HTTP/1.1 no-cache headers.
response.setHeader("Cache-Control","no-store, no-cache, must-revalidate");
// Set IE extended HTTP/1.1 no-cache headers (use addHeader).
response.addHeader("Cache-Control", "post-check=0, pre-check=0");
// Set standard HTTP/1.0 no-cache header.
response.setHeader("Pragma", "no-cache");
// return a jpeg
response.setContentType("image/jpeg");
int width=defaultWidth;
int height=defaultHeight;
String key=defaultSessionKey;
if(StringUtils.isNotEmpty(request.getParameter("width"))){
width=Integer.valueOf(request.getParameter("width"));
}
if(StringUtils.isNotEmpty(request.getParameter("height"))){
height=Integer.valueOf(request.getParameter("height"));
}
if(StringUtils.isNotEmpty(request.getParameter("key"))){
key=request.getParameter("key");
}
Producer captchaProducer = this.getProducer(width, height);
String capText = captchaProducer.createText();
request.getSession().setAttribute(key,capText);
// create the image with the text
BufferedImage bi = captchaProducer.createImage(capText);
ServletOutputStream out = response.getOutputStream();
try {
// write the data out
ImageIO.write(bi,"jpg", out);
out.flush();
} finally {
out.close();
}
}
示例2: captcha
import com.google.code.kaptcha.Producer; //导入方法依赖的package包/类
/**
* 获取登录的图片验证码
*/
@RequestMapping(value = "/imgcode", method = RequestMethod.GET)
public void captcha(HttpServletRequest request, HttpServletResponse response )
throws ServletException, IOException {
Subject currentUser = SecurityUtils.getSubject();
Session session = currentUser.getSession();
Producer captchaProducer = KaptchaProducerAgency.getKaptchaProducerExample();
response.setDateHeader("Expires", 0);
// Set standard HTTP/1.1 no-cache headers.
response.setHeader("Cache-Control",
"no-store, no-cache, must-revalidate");
// Set IE extended HTTP/1.1 no-cache headers (use addHeader).
response.addHeader("Cache-Control", "post-check=0, pre-check=0");
// Set standard HTTP/1.0 no-cache header.
response.setHeader("Pragma", "no-cache");
// return a jpeg
response.setContentType("image/jpeg");
// create the text for the image
String capText = captchaProducer.createText();
log.debug("******************验证码是: " + capText + "******************");
// store the text in the session
session.setAttribute(Constants.KAPTCHA_SESSION_KEY, capText );
// create the image with the text
BufferedImage bi = captchaProducer.createImage(capText);
ServletOutputStream out = response.getOutputStream();
// write the data out
ImageIO.write(bi, "jpg", out);
try {
out.flush();
} finally {
out.close();
}
}