package com.nq.controller;
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import com.google.code.kaptcha.Producer;
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import java.awt.image.BufferedImage;
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import java.io.IOException;
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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 org.apache.commons.lang3.StringUtils;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.stereotype.Controller;
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import org.springframework.web.bind.annotation.RequestMapping;
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import org.springframework.web.bind.annotation.RequestParam;
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import org.springframework.web.bind.annotation.ResponseBody;
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import org.springframework.web.servlet.ModelAndView;
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@Controller
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@RequestMapping({"/code/"})
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public class VerifyCodeController {
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private static final Logger log = LoggerFactory.getLogger(VerifyCodeController.class);
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@Autowired
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private Producer captchaProducer;
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@RequestMapping({"getCaptcha.do"})
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public ModelAndView getCaptcha() {
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ModelAndView mv = new ModelAndView();
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mv.addObject("timestamp", Long.valueOf(System.currentTimeMillis()));
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mv.setViewName("test/test_code");
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return mv;
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}
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@RequestMapping({"getCode.do"})
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public ModelAndView getCode(HttpServletRequest request, HttpServletResponse response, @RequestParam(value = "timestamp", required = false) String timestamp) throws IOException {
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ModelAndView mv = new ModelAndView();
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if (StringUtils.isEmpty(timestamp)) {
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mv.addObject("timestamp", Long.valueOf(System.currentTimeMillis()));
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} else {
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mv.addObject("timestamp", timestamp);
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}
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response.setDateHeader("Expires", 0L);
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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 capText = this.captchaProducer.createText();
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HttpSession session = request.getSession();
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session.removeAttribute("KAPTCHA_SESSION_KEY");
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session.setAttribute("KAPTCHA_SESSION_KEY", capText);
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BufferedImage bi = this.captchaProducer.createImage(capText);
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ServletOutputStream out = response.getOutputStream();
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ImageIO.write(bi, "jpg", out);
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try {
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out.flush();
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} finally {
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out.close();
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}
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return null;
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}
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//验证码
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@RequestMapping({"checkCode.do"})
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@ResponseBody
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public String checkCode(@RequestParam(value = "timestamp", required = false) String timestamp, @RequestParam(value = "code", required = false) String code, HttpServletRequest request) {
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boolean returnStr = false;
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HttpSession session = request.getSession();
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String original = (String) session.getAttribute("KAPTCHA_SESSION_KEY");
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log.info("======用户输入的验证码:" + code);
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log.info("======正确的验证码:" + original);
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if (StringUtils.isNotEmpty(code) && code.equalsIgnoreCase(original)) {
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returnStr = true;
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}
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return returnStr + "";
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}
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}
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