添加图片验证的方法，验证成功返回true，失败返回false。

src/main/java/com/ekexiu/portal/service/SysService.java

import org.jfw.apt.web.annotation.operate.Post;
import org.jfw.apt.web.annotation.param.JdbcConn;
import org.jfw.apt.web.annotation.param.PathVar;
import org.jfw.apt.web.annotation.param.SessionVal;
import org.jfw.util.StringUtil;
import org.jfw.util.context.JfwAppContext;
import org.jfw.util.exception.JfwBaseException;
		}
		return sc.getValue().equals(vc);
	}
	
	@Post
	@Path("/checkPicture")
	public boolean checkPictureVC(@SessionVal(value = "verification",defaultvalue="null",remove=true) String verification, 
			String submitVerification) throws JfwBaseException {
		if(null==verification){throw new JfwBaseException("Picture is expire !");}
		return verification.equals(submitVerification);
	}
	@Post
	@Path("/resetPasswordWithMobilePhone")

src/main/java/com/ekexiu/portal/util/PictureVC.java

import javax.servlet.Servlet;
import javax.servlet.ServletException;  
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;  
import javax.servlet.http.HttpServletResponse;  
import javax.servlet.http.HttpSession;
public class PictureVC extends HttpServlet implements Servlet {  
  
        response.setHeader("Cache-Control", "no-cache");  
        response.setDateHeader("Expires", 0);  
        response.setContentType("image/jpeg");  
          
        //生成随机字串  
        HttpSession session = request.getSession();
        //生成随机字符串  
        String verifyCode = VerifyCodeUtils.generateVerifyCode(4);
        //获取上次请求发送的rand的cookie 设置生命为0.
        Cookie[] cookies = request.getCookies();
        for (Cookie cookie : cookies) {
			if("rand".equalsIgnoreCase(cookie.getName())){
				cookie.setMaxAge(0);
			}
		}
        //为随机数创建cookie
        Cookie rand = new Cookie("rand", verifyCode.toLowerCase());
        //设置cookie中随机数的过期时间为1小时
        rand.setMaxAge(60 * 60);
        //在响应头中添加cookie
        response.addCookie(rand);
        //将验证码设置到session里 方便验证
        session.setAttribute("verification", verifyCode);
        //生成图片  
        int w = 100, h = 40;  
        VerifyCodeUtils.outputImage(w, h, response.getOutputStream(), verifyCode);