标签：username Java 实现 kaptcha 验证码 setProperty return properties
相关Maven
<!-- 验证码依赖kaptcha -->
<dependency>
<groupId>com.github.penggle</groupId>
<artifactId>kaptcha</artifactId>
<version>2.3.2</version>
</dependency>
配置注入
import com.google.code.kaptcha.impl.DefaultKaptcha;
import com.google.code.kaptcha.util.Config;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import java.util.Properties;
@Configuration
public class KaptchaConfig {
@Bean
public DefaultKaptcha getDefaultKaptcha() {
DefaultKaptcha defaultKaptcha = new DefaultKaptcha();
Properties properties = new Properties();
// 图片边框
properties.setProperty("kaptcha.border", "yes");
// 边框颜色
properties.setProperty("kaptcha.border.color", "105,179,90");
// 字体颜色
properties.setProperty("kaptcha.textproducer.font.color", "red");
// 图片宽
properties.setProperty("kaptcha.image.width", "120");
// 图片高
properties.setProperty("kaptcha.image.height", "50");
// 字体大小
properties.setProperty("kaptcha.textproducer.font.size", "30");
// session key
properties.setProperty("kaptcha.session.key", "code");
// 验证码长度
properties.setProperty("kaptcha.textproducer.char.length", "4");
// 字体
properties.setProperty("kaptcha.textproducer.font.names", "宋体,楷体,微软雅黑");
Config config = new Config(properties);
defaultKaptcha.setConfig(config);
return defaultKaptcha;
}
}
controller层
@Slf4j
@Controller
public class LoginController {
@Autowired
private UserService userService;
@Autowired
private PasswordEncoder passwordEncoder;
@Autowired
private DefaultKaptcha captchaProducer;
@RequestMapping("/{url}")
public String redirect(@PathVariable String url){
return url;
}
//登录功能
@RequestMapping("/loginIn")
public String login(@RequestParam("username") String username, @RequestParam("password") String password,
String vrifyCode, Model model, HttpSession session){
log.info("登录用户:" + username);
log.info("登录密码:" + password);
if(username.equals("")){
model.addAttribute("key","用户名不能为空");
return "login";
}else if(password.equals("")) {
model.addAttribute("key", "密码不能为空");
return "login";
}else if(!session.getAttribute("vrifyCode").equals(vrifyCode)){ //判断验证码是否一致
model.addAttribute("key","验证码不正确");
return "login";
}else {
User user = userService.loginIn(username);
if(user != null){
if(passwordEncoder.matches(password,user.getPassword())){
log.info(username + "用户登录成功");
//登录成功则存入用户信息到session中
session.setAttribute("LoginUser",username);
return "index";
}else {
log.info(username + "用户密码错误");
model.addAttribute("key","用户密码错误");
return "login";
}
}else {
log.info("登录失败，" + username + "用户不存在");
model.addAttribute("key","登录失败，" + username + "用户不存在");
return "login";
}
}
}
//获取验证码的请求路径
@RequestMapping("/kaptcha")
public void getKaptchaImage(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse) throws IOException {
byte[] captchaChallengeAsJpeg = null;
ByteArrayOutputStream jpegOutputStream = new ByteArrayOutputStream();
try {
//生产验证码字符串并保存到session中
String createText = captchaProducer.createText();
httpServletRequest.getSession().setAttribute("vrifyCode", createText);
//使用生产的验证码字符串返回一个BufferedImage对象并转为byte写入到byte数组中
BufferedImage challenge = captchaProducer.createImage(createText);
ImageIO.write(challenge, "jpg", jpegOutputStream);
} catch (IllegalArgumentException e) {
httpServletResponse.sendError(HttpServletResponse.SC_NOT_FOUND);
return;
}
//定义response输出类型为image/jpeg类型，使用response输出流输出图片的byte数组
captchaChallengeAsJpeg = jpegOutputStream.toByteArray();
httpServletResponse.setHeader("Cache-Control", "no-store");
httpServletResponse.setHeader("Pragma", "no-cache");
httpServletResponse.setDateHeader("Expires", 0);
httpServletResponse.setContentType("image/jpeg");
ServletOutputStream responseOutputStream =
httpServletResponse.getOutputStream();
responseOutputStream.write(captchaChallengeAsJpeg);
responseOutputStream.flush();
responseOutputStream.close();
}
}
前端页面
<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
<meta charset="UTF-8">
<title>登录页面</title>
<link rel="shortcut icon" href="../resources/favicon.ico" th:href="@{/static/favicon.ico}"/>
<script src="https://cdn.staticfile.org/jquery/3.2.1/jquery.min.js"></script>
<script>
<!--验证码刷新-->
function refresh() {
$("#captcha_img").attr("src", "");
$("#captcha_img").attr("src", "/kaptcha");
}
</script>
</head>
<body>
<form role="form" th:action="@{/loginIn}" method="post">
<div style="color: red">
<input type="hidden" name="_method" th:text="${key}" th:if="${key!=null}"/>
</div>
<p>
账号：<input type="text" id="username" name="username"> <br>
</p>
<p>
密码：<input type="password" id="password" name="password"> <br>
</p>
<label>验证码:</label>
<input type="text" name="vrifyCode"><br>
<img th:src="@{/kaptcha}" onclick="refresh()" alt="无法显示图片" title="点击换图" id="captcha_img"><br><br>
<p style="float:left;">
<input type="submit" id="login" value ="登录">
</p>
</form>
<form role="form1" th:action="@{/regist}" method="post">
<p style="float:left;"><input type="submit" id="regist" value="注册"></p>
</form>
</body>
</html>
页面展示
标签：username,Java,实现,kaptcha,验证码,setProperty,return,properties 来源： https://www.cnblogs.com/cjzzz/p/16256499.html
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