我正在使用Rails API。在我的 application_controller.rb ，我有一些方法可以通过查看json网络令牌的标头并对其进行解码来处理身份验证。如果令牌丢失或不正确，我想通过呈现未经身份验证的错误消息来响应请求。我尝试删除响应以处理每个错误，如下所示：
render json: { 'error': 'Some error message' }, status: 403
但它似乎永远不会流行。相反，我得到的错误看起来像这样：
{
"status": 500,
"error": "Internal Server Error",
"exception": "#<JWT::DecodeError: Invalid segment encoding>",
"traces": {
"Application Trace": [
{
"id": 4,
"trace": "app/controllers/application_controller.rb:13:in `decode_token'"
},
{
"id": 5,
"trace": "app/controllers/application_controller.rb:18:in `authenticate_current_user_from_token'"
}
],
"Framework Trace": [
{
"id": 0,
"trace": "jwt (2.1.0) lib/jwt/decode.rb:46:in `rescue in decode_header_and_payload'"
},
{
"id": 1,
"trace": "jwt (2.1.0) lib/jwt/decode.rb:41:in `decode_header_and_payload'"
},
{
"id": 2,
"trace": "jwt (2.1.0) lib/jwt/decode.rb:26:in `decode_segments'"
},
{
"id": 3,
"trace": "jwt (2.1.0) lib/jwt.rb:31:in `decode'"
},
{
"id": 6,
"trace": "activesupport (5.2.0) lib/active_support/callbacks.rb:426:in `block in make_lambda'"
},
{
"id": 7,
"trace": "activesupport (5.2.0) lib/active_support/callbacks.rb:198:in `block (2 levels) in halting'"
},
{
"id": 8,
"trace": "actionpack (5.2.0) lib/abstract_controller/callbacks.rb:34:in `block (2 levels) in <module:Callbacks>'"
},
{
"id": 9,
"trace": "activesupport (5.2.0) lib/active_support/callbacks.rb:199:in `block in halting'"
},
{
"id": 10,
"trace": "activesupport (5.2.0) lib/active_support/callbacks.rb:513:in `block in invoke_before'"
},
{
"id": 11,
"trace": "activesupport (5.2.0) lib/active_support/callbacks.rb:513:in `each'"
},
{
"id": 12,
"trace": "activesupport (5.2.0) lib/active_support/callbacks.rb:513:in `invoke_before'"
},
{
"id": 13,
"trace": "activesupport (5.2.0) lib/active_support/callbacks.rb:131:in `run_callbacks'"
},
{
"id": 14,
"trace": "actionpack (5.2.0) lib/abstract_controller/callbacks.rb:41:in `process_action'"
},
{
"id": 15,
"trace": "actionpack (5.2.0) lib/action_controller/metal/rescue.rb:22:in `process_action'"
},
{
"id": 16,
"trace": "actionpack (5.2.0) lib/action_controller/metal/instrumentation.rb:34:in `block in process_action'"
},
{
"id": 17,
"trace": "activesupport (5.2.0) lib/active_support/notifications.rb:168:in `block in instrument'"
},
{
"id": 18,
"trace": "activesupport (5.2.0) lib/active_support/notifications/instrumenter.rb:23:in `instrument'"
},
{
"id": 19,
"trace": "activesupport (5.2.0) lib/active_support/notifications.rb:168:in `instrument'"
},
{
"id": 20,
"trace": "actionpack (5.2.0) lib/action_controller/metal/instrumentation.rb:32:in `process_action'"
},
{
"id": 21,
"trace": "actionpack (5.2.0) lib/action_controller/metal/params_wrapper.rb:256:in `process_action'"
},
{
"id": 22,
"trace": "activerecord (5.2.0) lib/active_record/railties/controller_runtime.rb:24:in `process_action'"
},
{
"id": 23,
"trace": "actionpack (5.2.0) lib/abstract_controller/base.rb:134:in `process'"
},
{
"id": 24,
"trace": "actionpack (5.2.0) lib/action_controller/metal.rb:191:in `dispatch'"
},
{
"id": 25,
"trace": "actionpack (5.2.0) lib/action_controller/metal.rb:252:in `dispatch'"
},
{
"id": 26,
"trace": "actionpack (5.2.0) lib/action_dispatch/routing/route_set.rb:52:in `dispatch'"
},
{
"id": 27,
"trace": "actionpack (5.2.0) lib/action_dispatch/routing/route_set.rb:34:in `serve'"
},
{
"id": 28,
"trace": "actionpack (5.2.0) lib/action_dispatch/journey/router.rb:52:in `block in serve'"
},
{
"id": 29,
"trace": "actionpack (5.2.0) lib/action_dispatch/journey/router.rb:35:in `each'"
},
{
"id": 30,
"trace": "actionpack (5.2.0) lib/action_dispatch/journey/router.rb:35:in `serve'"
},
{
"id": 31,
"trace": "actionpack (5.2.0) lib/action_dispatch/routing/route_set.rb:840:in `call'"
},
{
"id": 32,
"trace": "rack (2.0.5) lib/rack/etag.rb:25:in `call'"
},
{
"id": 33,
"trace": "rack (2.0.5) lib/rack/conditional_get.rb:25:in `call'"
},
{
"id": 34,
"trace": "rack (2.0.5) lib/rack/head.rb:12:in `call'"
},
{
"id": 35,
"trace": "activerecord (5.2.0) lib/active_record/migration.rb:559:in `call'"
},
{
"id": 36,
"trace": "actionpack (5.2.0) lib/action_dispatch/middleware/callbacks.rb:28:in `block in call'"
},
{
"id": 37,
"trace": "activesupport (5.2.0) lib/active_support/callbacks.rb:98:in `run_callbacks'"
},
{
"id": 38,
"trace": "actionpack (5.2.0) lib/action_dispatch/middleware/callbacks.rb:26:in `call'"
},
{
"id": 39,
"trace": "actionpack (5.2.0) lib/action_dispatch/middleware/executor.rb:14:in `call'"
},
{
"id": 40,
"trace": "actionpack (5.2.0) lib/action_dispatch/middleware/debug_exceptions.rb:61:in `call'"
},
{
"id": 41,
"trace": "actionpack (5.2.0) lib/action_dispatch/middleware/show_exceptions.rb:33:in `call'"
},
{
"id": 42,
"trace": "railties (5.2.0) lib/rails/rack/logger.rb:38:in `call_app'"
},
{
"id": 43,
"trace": "railties (5.2.0) lib/rails/rack/logger.rb:26:in `block in call'"
},
{
"id": 44,
"trace": "activesupport (5.2.0) lib/active_support/tagged_logging.rb:71:in `block in tagged'"
},
{
"id": 45,
"trace": "activesupport (5.2.0) lib/active_support/tagged_logging.rb:28:in `tagged'"
},
{
"id": 46,
"trace": "activesupport (5.2.0) lib/active_support/tagged_logging.rb:71:in `tagged'"
},
{
"id": 47,
"trace": "railties (5.2.0) lib/rails/rack/logger.rb:26:in `call'"
},
{
"id": 48,
"trace": "actionpack (5.2.0) lib/action_dispatch/middleware/remote_ip.rb:81:in `call'"
},
{
"id": 49,
"trace": "actionpack (5.2.0) lib/action_dispatch/middleware/request_id.rb:27:in `call'"
},
{
"id": 50,
"trace": "rack (2.0.5) lib/rack/runtime.rb:22:in `call'"
},
{
"id": 51,
"trace": "activesupport (5.2.0) lib/active_support/cache/strategy/local_cache_middleware.rb:29:in `call'"
},
{
"id": 52,
"trace": "actionpack (5.2.0) lib/action_dispatch/middleware/executor.rb:14:in `call'"
},
{
"id": 53,
"trace": "actionpack (5.2.0) lib/action_dispatch/middleware/static.rb:127:in `call'"
},
{
"id": 54,
"trace": "rack (2.0.5) lib/rack/sendfile.rb:111:in `call'"
},
{
"id": 55,
"trace": "rack-cors (1.0.2) lib/rack/cors.rb:97:in `call'"
},
{
"id": 56,
"trace": "railties (5.2.0) lib/rails/engine.rb:524:in `call'"
},
{
"id": 57,
"trace": "puma (3.12.0) lib/puma/configuration.rb:225:in `call'"
},
{
"id": 58,
"trace": "puma (3.12.0) lib/puma/server.rb:658:in `handle_request'"
},
{
"id": 59,
"trace": "puma (3.12.0) lib/puma/server.rb:472:in `process_client'"
},
{
"id": 60,
"trace": "puma (3.12.0) lib/puma/server.rb:332:in `block in run'"
},
{
"id": 61,
"trace": "puma (3.12.0) lib/puma/thread_pool.rb:133:in `block in spawn_thread'"
}
],
"Full Trace": [
{
"id": 0,
"trace": "jwt (2.1.0) lib/jwt/decode.rb:46:in `rescue in decode_header_and_payload'"
},
{
"id": 1,
"trace": "jwt (2.1.0) lib/jwt/decode.rb:41:in `decode_header_and_payload'"
},
{
"id": 2,
"trace": "jwt (2.1.0) lib/jwt/decode.rb:26:in `decode_segments'"
},
{
"id": 3,
"trace": "jwt (2.1.0) lib/jwt.rb:31:in `decode'"
},
{
"id": 4,
"trace": "app/controllers/application_controller.rb:13:in `decode_token'"
},
{
"id": 5,
"trace": "app/controllers/application_controller.rb:18:in `authenticate_current_user_from_token'"
},
{
"id": 6,
"trace": "activesupport (5.2.0) lib/active_support/callbacks.rb:426:in `block in make_lambda'"
},
{
"id": 7,
"trace": "activesupport (5.2.0) lib/active_support/callbacks.rb:198:in `block (2 levels) in halting'"
},
{
"id": 8,
"trace": "actionpack (5.2.0) lib/abstract_controller/callbacks.rb:34:in `block (2 levels) in <module:Callbacks>'"
},
{
"id": 9,
"trace": "activesupport (5.2.0) lib/active_support/callbacks.rb:199:in `block in halting'"
},
{
"id": 10,
"trace": "activesupport (5.2.0) lib/active_support/callbacks.rb:513:in `block in invoke_before'"
},
{
"id": 11,
"trace": "activesupport (5.2.0) lib/active_support/callbacks.rb:513:in `each'"
},
{
"id": 12,
"trace": "activesupport (5.2.0) lib/active_support/callbacks.rb:513:in `invoke_before'"
},
{
"id": 13,
"trace": "activesupport (5.2.0) lib/active_support/callbacks.rb:131:in `run_callbacks'"
},
{
"id": 14,
"trace": "actionpack (5.2.0) lib/abstract_controller/callbacks.rb:41:in `process_action'"
},
{
"id": 15,
"trace": "actionpack (5.2.0) lib/action_controller/metal/rescue.rb:22:in `process_action'"
},
{
"id": 16,
"trace": "actionpack (5.2.0) lib/action_controller/metal/instrumentation.rb:34:in `block in process_action'"
},
{
"id": 17,
"trace": "activesupport (5.2.0) lib/active_support/notifications.rb:168:in `block in instrument'"
},
{
"id": 18,
"trace": "activesupport (5.2.0) lib/active_support/notifications/instrumenter.rb:23:in `instrument'"
},
{
"id": 19,
"trace": "activesupport (5.2.0) lib/active_support/notifications.rb:168:in `instrument'"
},
{
"id": 20,
"trace": "actionpack (5.2.0) lib/action_controller/metal/instrumentation.rb:32:in `process_action'"
},
{
"id": 21,
"trace": "actionpack (5.2.0) lib/action_controller/metal/params_wrapper.rb:256:in `process_action'"
},
{
"id": 22,
"trace": "activerecord (5.2.0) lib/active_record/railties/controller_runtime.rb:24:in `process_action'"
},
{
"id": 23,
"trace": "actionpack (5.2.0) lib/abstract_controller/base.rb:134:in `process'"
},
{
"id": 24,
"trace": "actionpack (5.2.0) lib/action_controller/metal.rb:191:in `dispatch'"
},
{
"id": 25,
"trace": "actionpack (5.2.0) lib/action_controller/metal.rb:252:in `dispatch'"
},
{
"id": 26,
"trace": "actionpack (5.2.0) lib/action_dispatch/routing/route_set.rb:52:in `dispatch'"
},
{
"id": 27,
"trace": "actionpack (5.2.0) lib/action_dispatch/routing/route_set.rb:34:in `serve'"
},
{
"id": 28,
"trace": "actionpack (5.2.0) lib/action_dispatch/journey/router.rb:52:in `block in serve'"
},
{
"id": 29,
"trace": "actionpack (5.2.0) lib/action_dispatch/journey/router.rb:35:in `each'"
},
{
"id": 30,
"trace": "actionpack (5.2.0) lib/action_dispatch/journey/router.rb:35:in `serve'"
},
{
"id": 31,
"trace": "actionpack (5.2.0) lib/action_dispatch/routing/route_set.rb:840:in `call'"
},
{
"id": 32,
"trace": "rack (2.0.5) lib/rack/etag.rb:25:in `call'"
},
{
"id": 33,
"trace": "rack (2.0.5) lib/rack/conditional_get.rb:25:in `call'"
},
{
"id": 34,
"trace": "rack (2.0.5) lib/rack/head.rb:12:in `call'"
},
{
"id": 35,
"trace": "activerecord (5.2.0) lib/active_record/migration.rb:559:in `call'"
},
{
"id": 36,
"trace": "actionpack (5.2.0) lib/action_dispatch/middleware/callbacks.rb:28:in `block in call'"
},
{
"id": 37,
"trace": "activesupport (5.2.0) lib/active_support/callbacks.rb:98:in `run_callbacks'"
},
{
"id": 38,
"trace": "actionpack (5.2.0) lib/action_dispatch/middleware/callbacks.rb:26:in `call'"
},
{
"id": 39,
"trace": "actionpack (5.2.0) lib/action_dispatch/middleware/executor.rb:14:in `call'"
},
{
"id": 40,
"trace": "actionpack (5.2.0) lib/action_dispatch/middleware/debug_exceptions.rb:61:in `call'"
},
{
"id": 41,
"trace": "actionpack (5.2.0) lib/action_dispatch/middleware/show_exceptions.rb:33:in `call'"
},
{
"id": 42,
"trace": "railties (5.2.0) lib/rails/rack/logger.rb:38:in `call_app'"
},
{
"id": 43,
"trace": "railties (5.2.0) lib/rails/rack/logger.rb:26:in `block in call'"
},
{
"id": 44,
"trace": "activesupport (5.2.0) lib/active_support/tagged_logging.rb:71:in `block in tagged'"
},
{
"id": 45,
"trace": "activesupport (5.2.0) lib/active_support/tagged_logging.rb:28:in `tagged'"
},
{
"id": 46,
"trace": "activesupport (5.2.0) lib/active_support/tagged_logging.rb:71:in `tagged'"
},
{
"id": 47,
"trace": "railties (5.2.0) lib/rails/rack/logger.rb:26:in `call'"
},
{
"id": 48,
"trace": "actionpack (5.2.0) lib/action_dispatch/middleware/remote_ip.rb:81:in `call'"
},
{
"id": 49,
"trace": "actionpack (5.2.0) lib/action_dispatch/middleware/request_id.rb:27:in `call'"
},
{
"id": 50,
"trace": "rack (2.0.5) lib/rack/runtime.rb:22:in `call'"
},
{
"id": 51,
"trace": "activesupport (5.2.0) lib/active_support/cache/strategy/local_cache_middleware.rb:29:in `call'"
},
{
"id": 52,
"trace": "actionpack (5.2.0) lib/action_dispatch/middleware/executor.rb:14:in `call'"
},
{
"id": 53,
"trace": "actionpack (5.2.0) lib/action_dispatch/middleware/static.rb:127:in `call'"
},
{
"id": 54,
"trace": "rack (2.0.5) lib/rack/sendfile.rb:111:in `call'"
},
{
"id": 55,
"trace": "rack-cors (1.0.2) lib/rack/cors.rb:97:in `call'"
},
{
"id": 56,
"trace": "railties (5.2.0) lib/rails/engine.rb:524:in `call'"
},
{
"id": 57,
"trace": "puma (3.12.0) lib/puma/configuration.rb:225:in `call'"
},
{
"id": 58,
"trace": "puma (3.12.0) lib/puma/server.rb:658:in `handle_request'"
},
{
"id": 59,
"trace": "puma (3.12.0) lib/puma/server.rb:472:in `process_client'"
},
{
"id": 60,
"trace": "puma (3.12.0) lib/puma/server.rb:332:in `block in run'"
},
{
"id": 61,
"trace": "puma (3.12.0) lib/puma/thread_pool.rb:133:in `block in spawn_thread'"
}
]
}
}
这是我的应用程序控制器：
application_controller.rb
class ApplicationController < ActionController::API
def encode_token(payload)
JWT.encode(payload, ENV['JWT_SECRET'])
end
def retrieve_token_from_header
request.headers['Authorization']
# TODO: return error if doesn't exist
end
def decode_token
token = retrieve_token_from_header.split(' ')[1]
JWT.decode(token, ENV['JWT_SECRET'], true, algorithm: 'HS256')
# TODO: return error if invalid
end
def authenticate_current_user_from_token
user_id = decode_token[0]['user_id']
@user = User.find(user_id)
# TODO: return error if user not found
end
end
任何帮助都将不胜感激。谢谢！
答案 0 :(得分：1)
您需要rescue_from的{{1}}顶部有处理程序，下面是一个示例：
ApplicationController