content: package com.ruoyi.framework.aspectj;
  
  import org.aspectj.lang.JoinPoint;
  import org.aspectj.lang.annotation.Aspect;
  import org.aspectj.lang.annotation.Before;
  import org.springframework.stereotype.Component;
  import com.ruoyi.common.annotation.DataScope;
  import com.ruoyi.common.core.domain.BaseEntity;
  import com.ruoyi.common.core.domain.entity.SysRole;
  import com.ruoyi.common.core.domain.entity.SysUser;
  import com.ruoyi.common.utils.ShiroUtils;
  import com.ruoyi.common.utils.StringUtils;
  
  /**
   * 数据过滤处理
   * 
   * @author ruoyi
   */
  @Aspect
  @Component
  public class DataScopeAspect
  {
      /**
       * 全部数据权限
       */
      public static final String DATA_SCOPE_ALL = "1";
  
      /**
       * 自定数据权限
       */
      public static final String DATA_SCOPE_CUSTOM = "2";
  
      /**
       * 部门数据权限
       */
      public static final String DATA_SCOPE_DEPT = "3";
  
      /**
       * 部门及以下数据权限
       */
      public static final String DATA_SCOPE_DEPT_AND_CHILD = "4";
  
      /**
       * 仅本人数据权限
       */
      public static final String DATA_SCOPE_SELF = "5";
  
      /**
       * 数据权限过滤关键字
       */
      public static final String DATA_SCOPE = "dataScope";
  
      @Before("@annotation(controllerDataScope)")
      public void doBefore(JoinPoint point, DataScope controllerDataScope) throws Throwable
      {
          clearDataScope(point);
          handleDataScope(point, controllerDataScope);
      }
  
      protected void handleDataScope(final JoinPoint joinPoint, DataScope controllerDataScope)
      {
          // 获取当前的用户
          SysUser currentUser = ShiroUtils.getSysUser();
          if (currentUser != null)
          {
              // 如果是超级管理员，则不过滤数据
              if (!currentUser.isAdmin())
              {
                  dataScopeFilter(joinPoint, currentUser, controllerDataScope.deptAlias(),
                          controllerDataScope.userAlias());
              }
          }
      }
  
      /**
       * 数据范围过滤
       * 
       * @param joinPoint 切点
       * @param user 用户
       * @param deptAlias 部门别名
       * @param userAlias 用户别名
       */
      public static void dataScopeFilter(JoinPoint joinPoint, SysUser user, String deptAlias, String userAlias)
      {
          StringBuilder sqlString = new StringBuilder();
  
          for (SysRole role : user.getRoles())
          {
              String dataScope = role.getDataScope();
              if (DATA_SCOPE_ALL.equals(dataScope))
              {
                  sqlString = new StringBuilder();
                  break;
              }
              else if (DATA_SCOPE_CUSTOM.equals(dataScope))
              {
                  sqlString.append(StringUtils.format(
                          " OR {}.dept_id IN ( SELECT dept_id FROM sys_role_dept WHERE role_id = {} ) ", deptAlias,
                          role.getRoleId()));
              }
              else if (DATA_SCOPE_DEPT.equals(dataScope))
              {
                  sqlString.append(StringUtils.format(" OR {}.dept_id = {} ", deptAlias, user.getDeptId()));
              }
              else if (DATA_SCOPE_DEPT_AND_CHILD.equals(dataScope))
              {
                  sqlString.append(StringUtils.format(
                          " OR {}.dept_id IN ( SELECT dept_id FROM sys_dept WHERE dept_id = {} or find_in_set( {} , ancestors ) )",
                          deptAlias, user.getDeptId(), user.getDeptId()));
              }
              else if (DATA_SCOPE_SELF.equals(dataScope))
              {
                  if (StringUtils.isNotBlank(userAlias))
                  {
                      sqlString.append(StringUtils.format(" OR {}.user_id = {} ", userAlias, user.getUserId()));
                  }
                  else
                  {
                      // 数据权限为仅本人且没有userAlias别名不查询任何数据
                      sqlString.append(" OR 1=0 ");
                  }
              }
          }
  
          if (StringUtils.isNotBlank(sqlString.toString()))
          {
              Object params = joinPoint.getArgs()[0];
              if (StringUtils.isNotNull(params) && params instanceof BaseEntity)
              {
                  BaseEntity baseEntity = (BaseEntity) params;
                  baseEntity.getParams().put(DATA_SCOPE, " AND (" + sqlString.substring(4) + ")");
              }
          }
      }
  
      /**
       * 拼接权限sql前先清空params.dataScope参数防止注入
       */
      private void clearDataScope(final JoinPoint joinPoint)
      {
          Object params = joinPoint.getArgs()[0];
          if (StringUtils.isNotNull(params) && params instanceof BaseEntity)
          {
              BaseEntity baseEntity = (BaseEntity) params;
              baseEntity.getParams().put(DATA_SCOPE, "");
          }
      }
  }
  