在Graphql中使用钩子处理错误的常用方法

const { graphqlHTTP } = require('express-graphql');
const { buildSchema } = require('graphql');

const schema = buildSchema(`
  type Query {
    hello: String
  }
`);

const root = {
  hello: () => {
    throw new Error('Something went wrong!');
  },
};

const errorHandler = (error) => {
  // 自定义错误处理逻辑
  console.error('GraphQL Error:', error);
  return error;
};

app.use('/graphql', graphqlHTTP({
  schema,
  rootValue: root,
  graphiql: true,
  formatError: errorHandler, // 使用错误处理函数
}));

const resolvers = {
  Query: {
    hello: () => {
      try {
        throw new Error('Something went wrong!');
      } catch (error) {
        // 自定义错误处理逻辑
        console.error('GraphQL Error:', error);
        return 'Error occurred: ' + error.message;
      }
    },
  },
};