randomimgcode.java

简易java(easyjf)框架开源论坛系统

package com.easyjf.site.action;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.easyjf.web.IWebAction;
import com.easyjf.web.Module;
import com.easyjf.web.Page;
import com.easyjf.web.WebForm;
import java.awt.image.*;
import javax.imageio.*;
import com.easyjf.site.business.ImageCode;

public class RandomImgCode implements IWebAction{
	public Page execute(WebForm form, Module module, HttpServletRequest request, HttpServletResponse response) {		
		response.setContentType("image/jpeg");
		ImageCode image=new ImageCode();
		response.setHeader("Pragma","No-cache");
		response.setHeader("Cache-Control","no-cache");
		response.setDateHeader("Expires", 0);		
		try{
//		 输出图象到页面		
		BufferedImage img=image.creatImage();
		request.getSession().setAttribute("rand",image.getSRand());		
		ImageIO.write(img, "JPEG", response.getOutputStream());		
		response.getOutputStream().flush();
		response.getOutputStream().close();
		}
		catch(Exception e)
		{
			System.out.println("错误:"+e);
		}		
		return null;
	}

}