注册图形验证码实现，用户名注册可成功

珞珈岛-项目相关文件/luojia-island/common/src/main/java/com/luojia_channel/common/config/WebMvcConfig.java

@@ -16,6 +16,8 @@ public class WebMvcConfig implements WebMvcConfigurer {
         registry.addInterceptor(authInterceptor)
                 .excludePathPatterns("/user/login",
                         "/user/register",
+                        "/user/captcha",
+                        "/user/verify-captcha",
                         "/post/list",
                         "/post/detail",
                         "/comment/list",

珞珈岛-项目相关文件/luojia-island/service/src/main/java/com/luojia_channel/LuojiaChannelApplication.java

@@ -10,4 +10,4 @@ public class LuojiaChannelApplication {
         SpringApplication.run(LuojiaChannelApplication.class, args);
     }
 
-}
+}

珞珈岛-项目相关文件/luojia-island/service/src/main/java/com/luojia_channel/modules/captcha/controller/CaptchaController.java

@@ -0,0 +1,84 @@
+package com.luojia_channel.modules.captcha.controller;
+
+import com.luojia_channel.common.domain.Result;
+import com.luojia_channel.modules.captcha.utils.CaptchaUtils;
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.tags.Tag;
+import jakarta.servlet.http.Cookie;
+import jakarta.servlet.http.HttpServletRequest;
+import jakarta.servlet.http.HttpServletResponse;
+import jakarta.servlet.http.HttpSession;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.data.redis.core.RedisTemplate;
+import org.springframework.web.bind.annotation.*;
+
+import java.awt.image.BufferedImage;
+import java.io.IOException;
+import java.util.Map;
+import java.util.UUID;
+import java.util.concurrent.TimeUnit;
+
+
+@RestController
+@RequestMapping("/user")
+@Tag(name = "图形验证码", description = "图形验证码相关接口")
+public class CaptchaController {
+
+    @Autowired
+    private RedisTemplate<String, String> redisTemplate;
+
+    /**
+     * 生成验证码图片
+     * @param request
+     * @param res
+     * @throws IOException
+     */
+    @GetMapping("/captcha")
+    @Operation(
+            summary = "生成验证码图片"
+    )
+    public void generateCaptcha(HttpServletRequest request,
+                     HttpServletResponse res) throws IOException {
+
+        CaptchaUtils captcha = new CaptchaUtils();
+        BufferedImage image = captcha.getImage();
+        String text = captcha.getText();
+
+        String captchaKey = UUID.randomUUID().toString();
+        redisTemplate.opsForValue().set("captcha:" + captchaKey, text, 60, TimeUnit.SECONDS);
+
+        Cookie cookie = new Cookie("captchaKey", captchaKey);
+        cookie.setPath("/");
+        res.addCookie(cookie);
+
+        CaptchaUtils.output(image,res.getOutputStream());
+    }
+
+    /**
+     * 验证验证码
+     * @param session
+     * @param params
+     * @return
+     */
+    @PostMapping("/verify-captcha")
+    public Result verifyCaptcha(@RequestBody Map<String, String> params, @CookieValue(value = "captchaKey", required = false) String captchaKey, HttpSession session) {
+        String captcha = params.get("captcha");
+
+        if (captchaKey == null) {
+            return Result.fail(500, "验证码已失效，请重新获取");
+        }
+
+        String redisKey = "captcha:" + captchaKey;
+        String correctCaptcha = redisTemplate.opsForValue().get(redisKey);
+        if (correctCaptcha == null) {
+            return Result.fail(500, "验证码已过期，请重新获取");
+        }
+
+        if (captcha.equalsIgnoreCase(correctCaptcha)) {
+            redisTemplate.delete(redisKey);
+            return Result.success();
+        } else {
+            return Result.fail(500, "图形验证码错误");
+        }
+    }
+}

珞珈岛-项目相关文件/luojia-island/service/src/main/java/com/luojia_channel/modules/captcha/utils/CaptchaUtils.java

@@ -0,0 +1,135 @@
+package com.luojia_channel.modules.captcha.utils;
+
+import javax.imageio.ImageIO;
+import java.awt.*;
+import java.awt.image.BufferedImage;
+import java.io.IOException;
+import java.io.OutputStream;
+import java.util.Random;
+
+public class CaptchaUtils {
+    /**
+     * 生成验证码图片的宽度
+     */
+    private int width = 180;
+
+    /**
+     * 生成验证码图片的高度
+     */
+    private int height = 30;
+
+    /**
+     * 字符样式
+     */
+    private String[] fontNames = { "宋体", "楷体", "隶书", "微软雅黑" };
+
+    /**
+     * 定义验证码图片的背景颜色为白色
+     */
+    private Color bgColor = new Color(255, 255, 255);
+
+    /**
+     * 生成随机
+     */
+    private Random random = new Random();
+
+    /**
+     * 定义code字符
+     */
+    private String codes = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
+
+    /**
+     * 记录随机字符串
+     */
+    private String text;
+
+    /**
+     * 获取一个随意颜色
+     * @return
+     */
+    private Color randomColor() {
+        int red = random.nextInt(150);
+        int green = random.nextInt(150);
+        int blue = random.nextInt(150);
+        return new Color(red, green, blue);
+    }
+
+    /**
+     * 获取一个随机字体
+     *
+     * @return
+     */
+    private Font randomFont() {
+        String name = fontNames[random.nextInt(fontNames.length)];
+        int style = random.nextInt(4);
+        int size = random.nextInt(5) + 24;
+        return new Font(name, style, size);
+    }
+
+    /**
+     * 获取一个随机字符
+     *
+     * @return
+     */
+    private char randomChar() {
+        return codes.charAt(random.nextInt(codes.length()));
+    }
+
+    /**
+     * 创建一个空白的BufferedImage对象
+     *
+     * @return
+     */
+    private BufferedImage createImage() {
+        BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
+        Graphics2D g2 = (Graphics2D) image.getGraphics();
+        //设置验证码图片的背景颜色
+        g2.setColor(bgColor);
+        g2.fillRect(0, 0, width, height);
+        return image;
+    }
+
+    public BufferedImage getImage() {
+        BufferedImage image = createImage();
+        Graphics2D g2 = (Graphics2D) image.getGraphics();
+        StringBuffer sb = new StringBuffer();
+        for (int i = 0; i < 4; i++) {
+            String s = randomChar() + "";
+            sb.append(s);
+            g2.setColor(randomColor());
+            g2.setFont(randomFont());
+            float x = i * width * 1.0f / 4;
+            g2.drawString(s, x, height - 8);
+        }
+        this.text = sb.toString();
+        drawLine(image);
+        return image;
+    }
+
+    /**
+     * 绘制干扰线
+     *
+     * @param image
+     */
+    private void drawLine(BufferedImage image) {
+        Graphics2D g2 = (Graphics2D) image.getGraphics();
+        int num = 5;
+        for (int i = 0; i < num; i++) {
+            int x1 = random.nextInt(width);
+            int y1 = random.nextInt(height);
+            int x2 = random.nextInt(width);
+            int y2 = random.nextInt(height);
+            g2.setColor(randomColor());
+            g2.setStroke(new BasicStroke(1.5f));
+            g2.drawLine(x1, y1, x2, y2);
+        }
+    }
+
+    public String getText() {
+        return text;
+    }
+
+    public static void output(BufferedImage image, OutputStream out) throws IOException {
+        ImageIO.write(image, "PNG", out);
+    }
+}

珞珈岛-项目相关文件/luojia-island/service/src/main/java/com/luojia_channel/modules/user/utils/ValidateUserUtil.java

@@ -21,7 +21,7 @@ public class ValidateUserUtil {
     private final UserMapper userMapper;
 
     /**
-     * 用户手机号，邮箱，学号三选一注册的参数校验
+     * 用户手机号，邮箱，用户名三选一注册的参数校验
      * 可能需要前端在用户选择注册方式时只暴露出一个文本框
      * @param userRegisterDTO
      */
@@ -30,10 +30,6 @@ public class ValidateUserUtil {
         String password = userRegisterDTO.getPassword();
         String phone = userRegisterDTO.getPhone();
         String email = userRegisterDTO.getEmail();
-        String studentId = userRegisterDTO.getStudentId();
-        if (StrUtil.isBlank(username)){
-            throw new UserException("用户名不能为空");
-        }
         if (StrUtil.isBlank(password)){
             throw new UserException("密码不能为空");
         }
@@ -42,12 +38,12 @@ public class ValidateUserUtil {
         int cnt = 0;
         if(StrUtil.isNotBlank(phone)) cnt++;
         if(StrUtil.isNotBlank(email)) cnt++;
-        if(StrUtil.isNotBlank(studentId)) cnt++;
+        if(StrUtil.isNotBlank(username)) cnt++;
         if (cnt == 0) {
-            throw new UserException("必须填写手机号、邮箱或学号其中一种注册方式");
+            throw new UserException("必须填写手机号、邮箱或用户名其中一种注册方式");
         }
         if (cnt > 1) {
-            throw new UserException("只能选择一种注册方式（手机/邮箱/学号）");
+            throw new UserException("只能选择一种注册方式（手机/邮箱/用户名）");
         }
         // 格式校验
         validateFormats(userRegisterDTO);
@@ -60,7 +56,6 @@ public class ValidateUserUtil {
         String password = userRegisterDTO.getPassword();
         String phone = userRegisterDTO.getPhone();
         String email = userRegisterDTO.getEmail();
-        String studentId = userRegisterDTO.getStudentId();
         // 仅对非空字段做格式校验
         if (userMapper.exists(Wrappers.<User>lambdaQuery()
                 .eq(User::getUsername, username))) {
@@ -69,14 +64,13 @@ public class ValidateUserUtil {
         if(!password.matches(PASSWORD_REGEX)){
             throw new UserException("密码格式错误");
         }
-        validateUserFlag(phone, email, studentId, null);
+        validateUserFlag(phone, email, null);
     }
 
     public void validateFormats(UserChangeInfoDTO userChangeInfoDTO, Long currentUserId){
         String username = userChangeInfoDTO.getUsername();
         String phone = userChangeInfoDTO.getPhone();
         String email = userChangeInfoDTO.getEmail();
-        String studentId = userChangeInfoDTO.getStudentId();
         // String college = userChangeInfoDTO.getCollege();
         if (userMapper.exists(Wrappers.<User>lambdaQuery()
                 .eq(User::getUsername, userChangeInfoDTO.getUsername())
@@ -84,10 +78,10 @@ public class ValidateUserUtil {
             throw new UserException("用户名已被使用");
         }
 
-        validateUserFlag(phone, email, studentId, currentUserId);
+        validateUserFlag(phone, email, currentUserId);
     }
 
-    private void validateUserFlag(String phone, String email, String studentId, Long currentUserId) {
+    private void validateUserFlag(String phone, String email,  Long currentUserId) {
         if(StrUtil.isNotBlank(phone)){
             if(!phone.matches(PHONE_REGEX))
                 throw new UserException("手机号格式错误");
@@ -106,15 +100,6 @@ public class ValidateUserUtil {
                 throw new UserException("邮箱已存在");
             }
         }
-        if(StrUtil.isNotBlank(studentId)){
-            if(!studentId.matches(STUDENTID_REGEX))
-                throw new UserException("学号格式错误");
-            if (userMapper.exists(Wrappers.<User>lambdaQuery()
-                    .eq(User::getStudentId, studentId)
-                    .ne(currentUserId != null, User::getId, currentUserId))) {
-                throw new UserException("学号已存在");
-            }
-        }
     }
 
 }

珞珈岛-项目相关文件/luojia-island/service/src/main/resources/application-local.yaml

@@ -2,11 +2,11 @@
  lj:
    db:
      host: localhost
-     password: 1243969857
+     password: 123456
    redis:
      host: localhost
      port: 6379
-     password: 1243969857
+     password: 123456
    rabbitmq:
      host: localhost
      port: 15672

珞珈岛-项目相关文件/luojia-island/service/target/classes/application-local.yaml

@@ -2,11 +2,11 @@
  lj:
    db:
      host: localhost
-     password: 1243969857
+     password: 123456
    redis:
      host: localhost
      port: 6379
-     password: 1243969857
+     password: 123456
    rabbitmq:
      host: localhost
      port: 15672