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package com.edu.swu.controller;

import com.google.code.kaptcha.Constants;
import com.google.code.kaptcha.Producer;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;

import javax.imageio.ImageIO;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.awt.image.BufferedImage;

/**
 * @Description //TODO：
 * @Author shaohjz
 * @Date 2019/2/25
 **/
@Controller
@RequestMapping（value = “/captcha“）
public class captchaController {
    /**
     * 验证码相关的接口
     *
     * @author gaowei.cheng
     */

    private static Logger log = LoggerFactory.getLogger（captchaController.class）;

    @Autowired
    private Producer captchaProducer;

    @RequestMapping（value = “/getCaptchaImage“）
    public ModelAndView getCaptchaImage（HttpServletRequest request HttpServletResponse response） throws Exception {
        HttpSession session = request.getSession（）;
        String code = （String） session.getAttribute（Constants.KAPTCHA_SESSION_KEY）;
        System.out.println（“******************验证码是: “ + code + “******************“）;

        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（）;

        // 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（）;
        }
        return null;
    }

}

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     目录           0  2019-09-23 21:06  毕业设计
     文件     3430912  2019-09-21 14:56  毕业设计222015321210033胡济洲.ppt
     目录           0  2019-09-23 21:05  毕业设计IdeaProjects
     目录           0  2019-09-23 21:05  毕业设计IdeaProjects.git
     文件          23  2019-09-21 15:34  毕业设计IdeaProjects.gitHEAD
     文件         130  2019-09-21 15:34  毕业设计IdeaProjects.gitconfig
     文件          73  2019-09-21 15:34  毕业设计IdeaProjects.gitdescription
     目录           0  2019-09-23 21:05  毕业设计IdeaProjects.githooks
     文件         478  2019-09-21 15:34  毕业设计IdeaProjects.githooksapplypatch-msg.sample
     文件         896  2019-09-21 15:34  毕业设计IdeaProjects.githookscommit-msg.sample
     文件        3327  2019-09-21 15:34  毕业设计IdeaProjects.githooksfsmonitor-watchman.sample
     文件         189  2019-09-21 15:34  毕业设计IdeaProjects.githookspost-update.sample
     文件         424  2019-09-21 15:34  毕业设计IdeaProjects.githookspre-applypatch.sample
     文件        1638  2019-09-21 15:34  毕业设计IdeaProjects.githookspre-commit.sample
     文件        1348  2019-09-21 15:34  毕业设计IdeaProjects.githookspre-push.sample
     文件        4898  2019-09-21 15:34  毕业设计IdeaProjects.githookspre-rebase.sample
     文件         544  2019-09-21 15:34  毕业设计IdeaProjects.githookspre-receive.sample
     文件        1492  2019-09-21 15:34  毕业设计IdeaProjects.githooksprepare-commit-msg.sample
     文件        3610  2019-09-21 15:34  毕业设计IdeaProjects.githooksupdate.sample
     目录           0  2019-09-23 21:06  毕业设计IdeaProjects.gitinfo
     目录           0  2019-09-23 21:05  毕业设计IdeaProjects.gitobjects
     目录           0  2019-09-23 21:06  毕业设计IdeaProjects.gitobjectsinfo
     目录           0  2019-09-23 21:06  毕业设计IdeaProjects.gitobjectspack
     目录           0  2019-09-23 21:05  毕业设计IdeaProjects.git
efs
     目录           0  2019-09-23 21:06  毕业设计IdeaProjects.git
efsheads
     目录           0  2019-09-23 21:06  毕业设计IdeaProjects.git
efs ags
     目录           0  2019-09-23 21:05  毕业设计IdeaProjects.idea
     文件           8  2019-09-21 15:34  毕业设计IdeaProjects.idea.name
     文件         545  2019-09-21 15:34  毕业设计IdeaProjects.ideacompiler.xml
     文件         209  2019-09-21 15:34  毕业设计IdeaProjects.ideaencodings.xml
     文件         656  2019-09-21 15:34  毕业设计IdeaProjects.ideamisc.xml
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