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src/main/java/com/it/rattan/monisuo/service/AdminService.java

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+package com.it.rattan.monisuo.service;
+
+import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
+import com.baomidou.mybatisplus.core.conditions.update.LambdaUpdateWrapper;
+import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
+import com.it.rattan.monisuo.entity.Admin;
+import com.it.rattan.monisuo.mapper.AdminMapper;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
+import org.springframework.stereotype.Service;
+import javax.annotation.PostConstruct;
+import java.time.LocalDateTime;
+
+/**
+ * 管理员服务
+ */
+@Slf4j
+@Service
+public class AdminService extends ServiceImpl<AdminMapper, Admin> {
+
+    private final BCryptPasswordEncoder passwordEncoder = new BCryptPasswordEncoder();
+
+    /** 初始超级管理员账号 */
+    private static final String[][] INIT_SUPER_ADMINS = {
+            {"SupperadminWho1", "超级管理员1"},
+            {"SupperadminWho2", "超级管理员2"},
+    };
+    private static final String INIT_PASSWORD = "saw123";
+
+    private static final int SUPER_ADMIN_ROLE = 1;
+
+    /**
+     * 系统启动时自动校验并初始化超级管理员
+     */
+    @PostConstruct
+    public void initSuperAdmins() {
+        for (String[] admin : INIT_SUPER_ADMINS) {
+            String username = admin[0];
+            String nickname = admin[1];
+            long count = count(new LambdaQueryWrapper<Admin>()
+                    .eq(Admin::getUsername, username));
+            if (count == 0) {
+                Admin newAdmin = new Admin();
+                newAdmin.setUsername(username);
+                newAdmin.setPassword(passwordEncoder.encode(INIT_PASSWORD));
+                newAdmin.setNickname(nickname);
+                newAdmin.setRole(SUPER_ADMIN_ROLE);
+                newAdmin.setPermissions("all");
+                newAdmin.setIsSystem(1);
+                newAdmin.setStatus(1);
+                newAdmin.setCreateTime(LocalDateTime.now());
+                save(newAdmin);
+                log.info("自动初始化超级管理员账号: {}", username);
+            }
+        }
+    }
+
+    /**
+     * 管理员登录
+     */
+    public Admin login(String username, String password) {
+        Admin admin = getOne(new LambdaQueryWrapper<Admin>()
+                .eq(Admin::getUsername, username)
+                .eq(Admin::getStatus, 1));
+        if (admin == null) {
+            return null;
+        }
+        if (!passwordEncoder.matches(password, admin.getPassword())) {
+            return null;
+        }
+        // 只更新最后登录时间，避免 updateById 全字段更新
+        update(new LambdaUpdateWrapper<Admin>()
+                .eq(Admin::getId, admin.getId())
+                .set(Admin::getLastLoginTime, LocalDateTime.now()));
+        admin.setLastLoginTime(LocalDateTime.now());
+        return admin;
+    }
+
+    /**
+     * 创建管理员
+     */
+    public Admin createAdmin(String username, String password, String nickname, Integer role) {
+        // 检查用户名是否已存在
+        long count = count(new LambdaQueryWrapper<Admin>()
+                .eq(Admin::getUsername, username));
+        if (count > 0) {
+            throw new RuntimeException("用户名已存在");
+        }
+        Admin admin = new Admin();
+        admin.setUsername(username);
+        admin.setPassword(passwordEncoder.encode(password));
+        admin.setNickname(nickname);
+        admin.setRole(role);
+        admin.setPermissions("order_approve");
+        admin.setIsSystem(0);
+        admin.setStatus(1);
+        admin.setCreateTime(LocalDateTime.now());
+        save(admin);
+        return admin;
+    }
+
+    /**
+     * 修改密码
+     */
+    public boolean updatePassword(Long adminId, String oldPassword, String newPassword) {
+        Admin admin = getById(adminId);
+        if (admin == null) {
+            throw new RuntimeException("管理员不存在");
+        }
+        if (!passwordEncoder.matches(oldPassword, admin.getPassword())) {
+            return false;
+        }
+        admin.setPassword(passwordEncoder.encode(newPassword));
+        admin.setUpdateTime(LocalDateTime.now());
+        updateById(admin);
+        return true;
+    }
+
+    /**
+     * 列出所有管理员
+     */
+    public java.util.List<Admin> listAdmins() {
+        return list(new LambdaQueryWrapper<Admin>()
+                .orderByDesc(Admin::getRole)
+                .orderByDesc(Admin::getCreateTime));
+    }
+
+    /**
+     * 删除管理员（系统预置不可删除）
+     */
+    public boolean deleteAdmin(Long adminId) {
+        Admin admin = getById(adminId);
+        if (admin == null) {
+            throw new RuntimeException("管理员不存在");
+        }
+        if (admin.getIsSystem() != null && admin.getIsSystem() == 1) {
+            throw new RuntimeException("系统预置管理员不可操作");
+        }
+        return removeById(adminId);
+    }
+
+    /**
+     * 启用/禁用管理员
+     */
+    public boolean toggleAdminStatus(Long adminId, Integer status) {
+        Admin admin = getById(adminId);
+        if (admin == null) {
+            throw new RuntimeException("管理员不存在");
+        }
+        if (admin.getIsSystem() != null && admin.getIsSystem() == 1) {
+            throw new RuntimeException("系统预置管理员不可操作");
+        }
+        admin.setStatus(status);
+        admin.setUpdateTime(LocalDateTime.now());
+        return updateById(admin);
+    }
+
+    /**
+     * 按用户名查询
+     */
+    public Admin getAdminByUsername(String username) {
+        return getOne(new LambdaQueryWrapper<Admin>()
+                .eq(Admin::getUsername, username));
+    }
+}

src/test/java/GenHash.java

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+package com.it.rattan.monisuo;
+import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
+public class GenHash {
+    public static void main(String[] args) {
+        BCryptPasswordEncoder encoder = new BCryptPasswordEncoder();
+        System.out.println(encoder.encode("saw123"));
+    }
+}