导入json值时缺少@Injectable注释

Question

我目前正在尝试将一个json文件插入到我正在构建的服务中。这个类通过构造函数中的@inject()标记注入json。下面你可以找到我正在使用的代码。

DiContainer.ts

import { Container, decorate, injectable } from "inversify";
import { IResponseBuilder, InjectionTypes, IUserIdGenerator, ILogger, IResponseRepository, IResponseService, IContextService, IFileWriter, IBoardSessionService, IIntent } from "./src/common/types";
import GoogleResponseBuilder from "./src/common/builders/googleResponseBuilder";
import UserIdGenerator from "./src/common/helpers/userIdGenerator";
import { DialogflowConversation } from "actions-on-google";
import WinstonLogger from "./src/common/winstonLogger";
import FileWriter from "./src/common/helpers/fileWriter";
import TextResponseRepository from "./src/repositories/textResponseRepository";
import SsmlResponseRepository from "./src/repositories/ssmlResponseRepository";
import ResponseSerivce from "./src/services/responseService";
import ContextService from "./src/services/contextService";
import { BoardService } from "./src/services/boardService";
import { BoardSessionService } from "./src/services/boardSessionService";
import WelcomeIntent from "./src/intents/new/welcomeIntent";
import uuid from "uuid/v4";

const sessionJson = require("./src/data/boardSessions.json");



const DIContainer = new Container();

DIContainer.bind<IResponseBuilder<DialogflowConversation>>(InjectionTypes.GoogleResponseBuilder).to(GoogleResponseBuilder);
DIContainer.bind<ILogger>(InjectionTypes.WinstonLogger).to(WinstonLogger);
DIContainer.bind<IFileWriter>(InjectionTypes.FileWriter).to(FileWriter);
DIContainer.bind<IUserIdGenerator>(InjectionTypes.UserIdGenerator).to(UserIdGenerator);

DIContainer.bind<IIntent>(InjectionTypes.WelcomeIntent).to(WelcomeIntent);

DIContainer.bind<IResponseRepository>(InjectionTypes.TextResponseRepository).to(TextResponseRepository);
DIContainer.bind<IResponseRepository>(InjectionTypes.SsmlResponseRepository).to(SsmlResponseRepository);
DIContainer.bind<IResponseService>(InjectionTypes.ResponseService).to(ResponseSerivce);
DIContainer.bind<IBoardSessionService>(InjectionTypes.BoardSessionService).to(BoardSessionService);
DIContainer.bind<IContextService>(InjectionTypes.ContextService).to(ContextService);

DIContainer.bind(InjectionTypes.SessionJSON).to(sessionJson);
DIContainer.bind(InjectionTypes.UUIDv4).toFunction(uuid);


export default DIContainer;

Answer 1

您试图通过@inject注入的每个依赖都必须标记为@injectable，并通过bind注册。我真的不知道装饰函数是如何工作的(所以我不知道你是否可以用它来标记函数，而不是一个可注射的类)。

顺便说一句，我认为只要将依赖项注册为动态值并返回所需的函数(如声明的这里 )，就可以实现您想要的结果。在你的例子中，像这样的事情：

DIContainer.bind(InjectionTypes.UUIDv4).toDynamicValue((context: interfaces.Context) => { return uuid });

或者，您可以直接导入服务中的函数，而不需要注入它，或者将函数封装到可以标记为可注入的另一个服务中(假设是uuid提供者服务)。