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式，而且我似乎无法在我的角度网络应用中发现客户端的任何错误。我在下面发布了我的尝试。任何建议或一组额外的眼睛都会非常感激。

基本上我所要做的就是在发生错误时提示我的用户有关此问题。如果有人有除apollo-link-error以外的其他npm包，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

您可以将apollo-link-error视为中间件，因此您必须将其添加到apollo客户端的提取过程中。

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()
});

...

Answer 2

另一种可能的解决方案：

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()
});

...

角度Apollo错误处理

2 个答案: