package com.javaweb.web.controller.system;
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import com.google.code.kaptcha.Constants;
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import com.google.code.kaptcha.Producer;
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import com.javaweb.common.core.controller.BaseController;
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import com.javaweb.common.utils.TzCodeUtil;
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import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
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import org.springframework.stereotype.Controller;
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import org.springframework.web.bind.annotation.GetMapping;
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import org.springframework.web.bind.annotation.RequestMapping;
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import org.springframework.web.servlet.ModelAndView;
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import javax.annotation.PostConstruct;
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import javax.annotation.Resource;
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import javax.imageio.ImageIO;
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import javax.servlet.ServletOutputStream;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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import javax.servlet.http.HttpSession;
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import java.awt.image.BufferedImage;
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import java.io.IOException;
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/**
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* 登录页面的图片验证码（支持算术形式）
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*
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* @author javaweb
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*/
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@Controller
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@RequestMapping("/captcha")
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@ConditionalOnProperty(prefix = "shiro.user", name = "captchaEnabled", havingValue = "true")
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public class SysCaptchaController extends BaseController
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{
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@PostConstruct
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public void init(){
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System.out.println("=============SysCaptchaController INIT=====================");
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}
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@Resource(name = "captchaProducer")
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private Producer captchaProducer;
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@Resource(name = "captchaProducerMath")
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private Producer captchaProducerMath;
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/**
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* 验证码生成
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*/
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@GetMapping(value = "/captchaImage")
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public ModelAndView getKaptchaImage(HttpServletRequest request, HttpServletResponse response)
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{
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ServletOutputStream out = null;
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try
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{
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HttpSession session = request.getSession();
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response.setDateHeader("Expires", 0);
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response.setHeader("Cache-Control", "no-store, no-cache, must-revalidate");
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response.addHeader("Cache-Control", "post-check=0, pre-check=0");
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response.setHeader("Pragma", "no-cache");
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response.setContentType("image/jpeg");
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String type = request.getParameter("type");
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String capStr = null;
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String code = null;
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BufferedImage bi = null;
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if ("math".equals(type))
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{
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String capText = captchaProducerMath.createText();
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capStr = capText.substring(0, capText.lastIndexOf("@"));
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code = capText.substring(capText.lastIndexOf("@") + 1);
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bi = captchaProducerMath.createImage(capStr);
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}
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else if ("char".equals(type))
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{
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//capStr = code = captchaProducer.createText();
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//bi = captchaProducer.createImage(capStr);
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TzCodeUtil util=new TzCodeUtil();
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capStr = code =util.createCode();
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bi=util.getBuffImg();
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}
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session.setAttribute(Constants.KAPTCHA_SESSION_KEY, code);
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out = response.getOutputStream();
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ImageIO.write(bi, "jpg", out);
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out.flush();
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}
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catch (Exception e)
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{
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e.printStackTrace();
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}
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finally
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{
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try
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{
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if (out != null)
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{
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out.close();
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}
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}
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catch (IOException e)
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{
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e.printStackTrace();
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}
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}
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return null;
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}
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}
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