feat: 新增 CurrentUserUtil 工具类，用于获取和绑定当前用户信息

- 添加 CurrentUserUtil 类，实现获取当前用户信息的功能
- 提供获取用户 ID、用户名、真实姓名、部门和角色的方法- 实现绑定临时用户和清理当前线程用户信息的方法
- 用于解决在多线程环境下正确获取当前用户信息的问题

laws-modules/src/main/java/com/jero/modules/activiti/util/CurrentUserUtil.java

@@ -0,0 +1,125 @@
+package com.jero.modules.activiti.util;
+
+import com.jero.common.system.vo.LoginUser;
+import lombok.extern.slf4j.Slf4j;
+import org.apache.shiro.SecurityUtils;
+import org.apache.shiro.UnavailableSecurityManagerException;
+import org.apache.shiro.mgt.SecurityManager;
+import org.apache.shiro.subject.PrincipalCollection;
+import org.apache.shiro.subject.SimplePrincipalCollection;
+import org.apache.shiro.subject.Subject;
+import org.apache.shiro.util.ThreadContext;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+/**
+ * @Author: liao
+ * @Date: 2023/10/26 16:55
+ * @Description: 当前用户工具类
+ */
+@Slf4j
+@Component
+public class CurrentUserUtil {
+
+    @Autowired
+    private SecurityManager securityManager;
+
+    /**
+     * @Author: liao
+     * @Date: 2023/10/26 16:58
+     * @Description: 获取当前用户id
+     **/
+    public static String getId() {
+        LoginUser loginUser = (LoginUser) SecurityUtils.getSubject().getPrincipal();
+        return loginUser.getId();
+    }
+
+    /**
+     * @Author: liao
+     * @Date: 2023/10/26 16:58
+     * @Description: 获取当前用户名
+     **/
+    public static String getUsername() {
+        LoginUser loginUser = (LoginUser) SecurityUtils.getSubject().getPrincipal();
+        return loginUser.getUsername();
+    }
+
+    /**
+     * @Author: liao
+     * @Date: 2023/10/30 9:49
+     * @Description: 获取真实姓名
+     **/
+    public static String getRealName() {
+        LoginUser loginUser = (LoginUser) SecurityUtils.getSubject().getPrincipal();
+        return loginUser.getRealname();
+    }
+
+    /**
+     * @Author: liao
+     * @Date: 2023/10/30 9:50
+     * @Description: 姓名+工号
+     **/
+    public static String getName() {
+        LoginUser loginUser = (LoginUser) SecurityUtils.getSubject().getPrincipal();
+        return loginUser.getRealname() + "（" + loginUser.getUsername() + "）";
+    }
+
+    /**
+     * @Author: liao
+     * @Date: 2023/10/26 18:26
+     * @Description: 获取当前用户部门
+     **/
+    public static String getOrgCode() {
+        LoginUser loginUser = (LoginUser) SecurityUtils.getSubject().getPrincipal();
+        return loginUser.getOrgCode();
+    }
+
+    /**
+     * @Author: liao
+     * @Date: 2023/10/27 10:21
+     * @Description: 获取当前用户角色编码（逗号分隔）
+     **/
+    public static String getRoles() {
+        LoginUser loginUser = (LoginUser) SecurityUtils.getSubject().getPrincipal();
+        return loginUser.getRoleIds();
+    }
+
+    /**
+     * 获取当前用户
+     * @return
+     */
+    public static LoginUser getLoginUser() {
+        try {
+            return (LoginUser) SecurityUtils.getSubject().getPrincipal();
+        } catch (UnavailableSecurityManagerException e) {
+            log.warn("未找到当前登录人");
+            return null;
+        }
+    }
+
+    /**
+     * 为当前线程绑定一个临时用户
+     */
+    public void bindUserToThread(LoginUser tempUser) {
+        // 设置安全管理器
+        SecurityUtils.setSecurityManager(securityManager);
+
+        // 使用 SecurityManager 和用户信息构建 Subject
+        Subject.Builder builder = new Subject.Builder(SecurityUtils.getSecurityManager());
+        PrincipalCollection principalCollection = new SimplePrincipalCollection(tempUser, "yourRealmName");
+        builder.principals(principalCollection);
+        Subject subject = builder.buildSubject();
+
+        // 绑定 Subject 到当前线程
+        ThreadContext.bind(subject);
+    }
+
+    /**
+     * 清理当前线程中的用户信息
+     */
+    public void clearCurrentUser() {
+        // 解绑当前线程的 Subject
+        ThreadContext.unbindSubject();
+    }
+
+}