鉴权

src/main/java/cn/van/business/service/AdminUserService.java

@@ -0,0 +1,29 @@
+package cn.van.business.service;
+
+import cn.van.business.model.user.AdminUser;
+import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
+import org.springframework.stereotype.Service;
+
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Optional;
+
+@Service
+public class AdminUserService {
+
+
+    // 模拟数据库存储
+    private static final Map<String, AdminUser> users = new HashMap<>();
+
+    static {
+        // 初始化一个测试用户（生产环境应从数据库加载）
+        AdminUser user = new AdminUser();
+        user.setUsername("van");
+        user.setPassword(new BCryptPasswordEncoder().encode("LK.807878712"));
+        users.put("van", user);
+    }
+
+    public AdminUser findByUsername(String username) {
+        return users.get(username);
+    }
+}

src/main/java/cn/van/business/service/CaptchaService.java

@@ -0,0 +1,32 @@
+package cn.van.business.service;
+
+import com.google.code.kaptcha.Producer;
+import org.springframework.stereotype.Service;
+
+import javax.imageio.ImageIO;
+import java.awt.image.BufferedImage;
+import java.io.ByteArrayOutputStream;
+import java.util.Base64;
+
+@Service
+public class CaptchaService {
+
+    private final Producer kaptchaProducer;
+
+    public CaptchaService(Producer kaptchaProducer) {
+        this.kaptchaProducer = kaptchaProducer;
+    }
+
+    public String generateCaptchaImage() throws Exception {
+        String text = kaptchaProducer.createText();
+        BufferedImage image = kaptchaProducer.createImage(text);
+
+        ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
+        ImageIO.write(image, "PNG", outputStream);
+        return Base64.getEncoder().encodeToString(outputStream.toByteArray());
+    }
+
+    public boolean validateCaptcha(String userInput, String generatedCaptcha) {
+        return userInput.equalsIgnoreCase(generatedCaptcha);
+    }
+}

src/main/java/cn/van/business/service/impl/UserDetailsServiceImpl.java

@@ -0,0 +1,36 @@
+package cn.van.business.service.impl;
+
+import cn.van.business.model.user.AdminUser;
+import cn.van.business.service.AdminUserService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.security.core.GrantedAuthority;
+import org.springframework.security.core.userdetails.User;
+import org.springframework.security.core.userdetails.UserDetails;
+import org.springframework.security.core.userdetails.UserDetailsService;
+import org.springframework.security.core.userdetails.UsernameNotFoundException;
+import org.springframework.stereotype.Service;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
+
+@Service
+public class UserDetailsServiceImpl implements UserDetailsService {
+
+    @Autowired
+    private AdminUserService adminUserService;
+
+    @Override
+    public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
+        AdminUser user = adminUserService.findByUsername(username);
+        if (user == null) {
+            throw new UsernameNotFoundException("用户不存在");
+        }
+
+        return User.builder()
+                .username(user.getUsername())
+                .password(user.getPassword())
+                .build();
+    }
+
+}