重构，增加 Permission 相关模块，更加清晰

system-service-project/system-service-app/src/main/java/cn/iocoder/mall/systemservice/manager/permission/PermissionManager.java

@@ -0,0 +1,38 @@
+package cn.iocoder.mall.systemservice.manager.permission;
+
+import cn.iocoder.mall.systemservice.rpc.permission.dto.PermissionAssignRoleResourceDTO;
+import cn.iocoder.mall.systemservice.service.permission.PermissionService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+import java.util.Set;
+
+/**
+ * 权限 Manager
+ */
+@Service
+public class PermissionManager {
+
+    @Autowired
+    private PermissionService permissionService;
+
+    /**
+     * 获得角色拥有的资源编号
+     *
+     * @param roleId 角色编号
+     * @return 资源编号列表
+     */
+    public Set<Integer> listRoleResourceId(Integer roleId) {
+        return permissionService.listRoleResourceId(roleId);
+    }
+
+    /**
+     * 赋予角色资源
+     *
+     * @param assignResourceDTO 赋予角色资源 DTO
+     */
+    public void assignRoleResource(PermissionAssignRoleResourceDTO assignResourceDTO) {
+        permissionService.assignRoleResource(assignResourceDTO.getRoleId(), assignResourceDTO.getResourceIds());
+    }
+
+}

system-service-project/system-service-app/src/main/java/cn/iocoder/mall/systemservice/rpc/permission/PermissionRpcImpl.java

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+package cn.iocoder.mall.systemservice.rpc.permission;
+
+import cn.iocoder.common.framework.vo.CommonResult;
+import cn.iocoder.mall.systemservice.manager.permission.PermissionManager;
+import cn.iocoder.mall.systemservice.rpc.permission.dto.PermissionAssignRoleResourceDTO;
+import org.apache.dubbo.config.annotation.Service;
+import org.springframework.beans.factory.annotation.Autowired;
+
+import java.util.Set;
+
+import static cn.iocoder.common.framework.vo.CommonResult.success;
+
+/**
+ * 权限 Rpc 实现类
+ */
+@Service(version = "${dubbo.provider.PermissionRpc.version}", validation = "false")
+public class PermissionRpcImpl implements PermissionRpc {
+
+    @Autowired
+    private PermissionManager permissionManager;
+
+    @Override
+    public CommonResult<Set<Integer>> listRoleResourceId(Integer roleId) {
+        return success(permissionManager.listRoleResourceId(roleId));
+    }
+
+    @Override
+    public CommonResult<Boolean> assignRoleResource(PermissionAssignRoleResourceDTO assignRoleResourceDTO) {
+        permissionManager.assignRoleResource(assignRoleResourceDTO);
+        return success(true);
+    }
+
+}

system-service-project/system-service-app/src/main/java/cn/iocoder/mall/systemservice/service/permission/PermissionService.java

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+package cn.iocoder.mall.systemservice.service.permission;
+
+import cn.iocoder.common.framework.util.CollectionUtils;
+import cn.iocoder.common.framework.util.ServiceExceptionUtil;
+import cn.iocoder.mall.mybatis.enums.DeletedStatusEnum;
+import cn.iocoder.mall.systemservice.dal.mysql.dataobject.permission.RoleResourceDO;
+import cn.iocoder.mall.systemservice.dal.mysql.mapper.permission.AdminRoleMapper;
+import cn.iocoder.mall.systemservice.dal.mysql.mapper.permission.ResourceMapper;
+import cn.iocoder.mall.systemservice.dal.mysql.mapper.permission.RoleMapper;
+import cn.iocoder.mall.systemservice.dal.mysql.mapper.permission.RoleResourceMapper;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+import java.util.Date;
+import java.util.List;
+import java.util.Set;
+import java.util.stream.Collectors;
+
+import static cn.iocoder.mall.systemservice.enums.SystemErrorCodeEnum.AUTHORIZATION_ROLE_ASSIGN_RESOURCE_NOT_EXISTS;
+import static cn.iocoder.mall.systemservice.enums.SystemErrorCodeEnum.ROLE_NOT_EXISTS;
+
+/**
+ * 权限 Service
+ */
+@Service
+public class PermissionService {
+
+    @Autowired
+    private RoleMapper roleMapper;
+    @Autowired
+    private ResourceMapper resourceMapper;
+    @Autowired
+    private AdminRoleMapper adminRoleMapper;
+    @Autowired
+    private RoleResourceMapper roleResourceMapper;
+
+    /**
+     * 获得角色拥有的资源编号
+     *
+     * @param roleId 角色编号
+     * @return 资源编号列表
+     */
+    public Set<Integer> listRoleResourceId(Integer roleId) {
+        List<RoleResourceDO> roleResourceDOs = roleResourceMapper.selectListByRoleId(roleId);
+        return CollectionUtils.convertSet(roleResourceDOs, RoleResourceDO::getResourceId);
+    }
+
+    /**
+     * 赋予角色资源
+     *
+     * @param roleId 角色编号
+     * @param resourceIds 资源编号列表
+     */
+    public void assignRoleResource(Integer roleId, Set<Integer> resourceIds) {
+        // 校验角色是否存在
+        if (roleMapper.selectById(roleId) == null) {
+            throw ServiceExceptionUtil.exception(ROLE_NOT_EXISTS);
+        }
+        // 校验是否有不存在的资源
+        if (!CollectionUtils.isEmpty(resourceIds)) {
+            int dbResourceSize = resourceMapper.selectCountByIdsAndType(resourceIds, null);
+            if (resourceIds.size() != dbResourceSize) {
+                throw ServiceExceptionUtil.exception(AUTHORIZATION_ROLE_ASSIGN_RESOURCE_NOT_EXISTS);
+            }
+        }
+        // TODO 芋艿，这里先简单实现。即方式是，删除老的分配的资源关系，然后添加新的分配的资源关系
+        // 标记角色原资源关系都为删除
+        roleResourceMapper.deleteByRoleId(roleId);
+        // 创建 RoleResourceDO 数组，并插入到数据库
+        if (!CollectionUtils.isEmpty(resourceIds)) {
+            List<RoleResourceDO> roleResources = resourceIds.stream().map(resourceId -> {
+                RoleResourceDO roleResource = new RoleResourceDO().setRoleId(roleId).setResourceId(resourceId);
+                roleResource.setCreateTime(new Date());
+                roleResource.setDeleted(DeletedStatusEnum.DELETED_NO.getValue());
+                return roleResource;
+            }).collect(Collectors.toList());
+            roleResourceMapper.insertList(roleResources);
+        }
+    }
+
+}