角度Apollo错误处理

Question

大家好，我对apollo-angular和apollo-link-error的问题有点困惑。 我尝试了几种不同的方法，我似乎无法在我的角度网络应用程序中捕获客户端的任何错误。 我在下面发布了我的尝试。 任何建议或一组额外的眼睛将非常感激。

基本上我所要做的就是当发生错误时提示我的用户有关问题。 如果有人有一些替代npm包而不是apollo-link-error我都是耳朵。

尝试1：

export class AppModule {
  constructor (apollo: Apollo, httpLink: HttpLink) {
    apollo.create({
      link: httpLink.create({
        uri: 'http://localhost:8080/graphql'
      }),
      cache: new InMemoryCache()
    });

    const error = onError(({ networkError }) => {
      const networkErrorRef:HttpErrorResponse = networkError as HttpErrorResponse;
      if (networkErrorRef && networkErrorRef.status === 401) {
        console.log('Prompt User', error);
      }
    });
  }
}

尝试2：

export class AppModule {
  constructor (apollo: Apollo, httpLink: HttpLink) {
    apollo.create({
      link: httpLink.create({
        uri: 'http://localhost:8080/graphql'
      }),
      cache: new InMemoryCache()
    });

    const error = onError(({networkError}) => {
      if (networkError.status === 401) {
        console.log('Prompt User', error);
      }
    });
  }
}

尝试3：

export class AppModule {
constructor (apollo: Apollo, httpLink: HttpLink) {
apollo.create({
  link: httpLink.create({
    uri: 'http://localhost:8080/graphql'
  }),
  cache: new InMemoryCache()
});

const link = onError(({ graphQLErrors, networkError }) => {
  if (graphQLErrors)
    graphQLErrors.map(({ message, locations, path }) =>
      console.log(
        `[GraphQL error]: Message: ${message}, Location: ${locations}, Path: ${path}`,
      ),
    );
    if (networkError) console.log(`[Network error]: ${networkError}`);
  });
 }
}

Answer 1

另一种可能的方案

 import { HttpLink } from 'apollo-link-http'; import { onError } from 'apollo-link-error'; ... const errorLink = onError(({ graphQLErrors, networkError }) => { if (graphQLErrors) graphQLErrors.map(({ message, locations, path }) => console.log( `[GraphQL error]: Message: ${message}, Location: ${locations}, Path: ${path}`, ), ); if (networkError) console.log(`[Network error]: ${networkError}`); }); } } const link = httpLink.create({ uri: environment.applications.mAPI.adminEndPoint, }); apollo.create({ link: errorLink.concat(link), cache: new InMemoryCache() }); ... 

Answer 2

您可以将apollo-link-error视为中间件，因此您必须将其添加到apollo客户端中的获取过程中。

这意味着您必须创建另一个结合了http和错误链接的apollo链接：

 import { ApolloLink } from 'apollo-link'; import { HttpLink } from 'apollo-link-http'; import { onError } from 'apollo-link-error'; ... const errorLink = onError(({ graphQLErrors, networkError }) => { if (graphQLErrors) graphQLErrors.map(({ message, locations, path }) => console.log( `[GraphQL error]: Message: ${message}, Location: ${locations}, Path: ${path}`, ), ); if (networkError) console.log(`[Network error]: ${networkError}`); }); } } const httpLink = new HttpLink({ uri: "http://localhost:8080/graphql" }); const httpLinkWithErrorHandling = ApolloLink.from([ errorLink, httpLink, ]); apollo.create({ link: httpLinkWithErrorHandling, cache: new InMemoryCache() }); ...