1 package main.com.smart.controller;
2
3 import com.google.code.kaptcha.Producer;
4 import main.com.smart.utils.CaptchaProducer;
5 import main.com.smart.utils.RedisClient;
6 import org.apache.log4j.Logger;
7 import org.apache.log4j.spi.LoggerFactory;
8 import org.springframework.beans.factory.annotation.Autowired;
9 import org.springframework.stereotype.Controller;
10 import org.springframework.web.bind.annotation.RequestMapping;
11 import org.springframework.web.servlet.ModelAndView;
12
13 import javax.imageio.ImageIO;
14 import javax.servlet.ServletOutputStream;
15 import javax.servlet.http.HttpServletRequest;
16 import javax.servlet.http.HttpServletResponse;
17 import javax.servlet.http.HttpSession;
18
19 import com.google.code.kaptcha.Constants;
20
21 import java.awt.image.BufferedImage;
22
23 /**
24 * 验证码 生成控制器
25 *
26 * @author yang ming
27 * @create 2016-04-29 12:17
28 */
29
30
31 @Controller
32 @RequestMapping("/kaptcha")
33 public class CaptchaController {
34 /**
35 * 使用方法
36 * get: http://localhost:8080/smart/kaptcha
37 */
38 private static final Logger log = Logger.getLogger(CaptchaController.class);
39 @Autowired
40 private Producer captchaProducer = null;
41
42 @RequestMapping
43 public ModelAndView getKaptchaImage(HttpServletRequest request, HttpServletResponse response) throws Exception {
44 RedisClient client = RedisClient.getInstance();
45 //在控制器中获取验证码
46 //String kaptchaExpected = (String) request.getSession().getAttribute(com.google.code.kaptcha.Constants.KAPTCHA_SESSION_KEY);
47 log.info("获取验证");
48
49 log.info(Constants.KAPTCHA_SESSION_KEY);
50 HttpSession session = request.getSession();
51 String code1 = client.getValue(Constants.KAPTCHA_SESSION_KEY);
52 String code = String.valueOf(session.getAttribute(Constants.KAPTCHA_SESSION_KEY));
53 //System.out.println("******************验证码是: " + code + "******************");
54
55 response.setDateHeader("Expires", 0);
56
57 // Set standard HTTP/1.1 no-cache headers.
58 response.setHeader("Cache-Control", "no-store, no-cache, must-revalidate");
59
60 // Set IE extended HTTP/1.1 no-cache headers (use addHeader).
61 response.addHeader("Cache-Control", "post-check=0, pre-check=0");
62
63 // Set standard HTTP/1.0 no-cache header.
64 response.setHeader("Pragma", "no-cache");
65
66 // return a jpeg
67 response.setContentType("image/jpeg");
68
69 // create the text for the image
70 String[] array = CaptchaProducer.getCaptchaText();
71 //String capText = captchaProducer.createText();
72 //int param1 = (int)capText.charAt(0);
73 //int param2 = (int)capText.charAt(1);
74 Integer result = Integer.valueOf(array[0]) + Integer.valueOf(array[1]);
75
76 // store the text in the session
77 client.setValue(Constants.KAPTCHA_SESSION_KEY, result.toString());
78 //session.setAttribute(Constants.KAPTCHA_SESSION_KEY, result);
79
80 // create the image with the text
81 BufferedImage bi = captchaProducer.createImage(array[0]+"+"+array[1]+"=?");
82 ServletOutputStream out = response.getOutputStream();
83
84 // write the data out
85 ImageIO.write(bi, "jpg", out);
86 try {
87 out.flush();
88 } finally {
89 out.close();
90 }
91 return null;
92 }
93
94 }
