Question

documentation告诉我们解析器有这种形式：

fieldName: (obj, args, context, info) => result

如果“无法找到该对象”，则该结果为null或undefined。

其他错误怎么办 - 例如，如果未授权访问？

您似乎无法直接“返回”错误，因为结果必须与架构匹配。

我已经尝试在解析器中抛出一个异常，这几乎是正确的：客户端获取一个带有异常消息的ApolloError：这很好。但是apollo-server会发出堆栈跟踪，就好像没有处理异常一样。这似乎不对。

因此问题：如何做到这一点？

apollo-server堆栈跟踪，如果它有帮助：

Error: test exception message
at /Users/mgregory/NRN/src/agreeonit/apollo_server/resolvers/mutationResolvers.js:29:17
at tryCatcher (/Users/mgregory/NRN/src/agreeonit/apollo_server/node_modules/bluebird/js/release/util.js:16:23)
at Promise._settlePromiseFromHandler (/Users/mgregory/NRN/src/agreeonit/apollo_server/node_modules/bluebird/js/release/promise.js:510:31)
at Promise._settlePromise (/Users/mgregory/NRN/src/agreeonit/apollo_server/node_modules/bluebird/js/release/promise.js:567:18)
at Promise._settlePromise0 (/Users/mgregory/NRN/src/agreeonit/apollo_server/node_modules/bluebird/js/release/promise.js:612:10)
at Promise._settlePromises (/Users/mgregory/NRN/src/agreeonit/apollo_server/node_modules/bluebird/js/release/promise.js:691:18)
at Async._drainQueue (/Users/mgregory/NRN/src/agreeonit/apollo_server/node_modules/bluebird/js/release/async.js:138:16)
at Async._drainQueues (/Users/mgregory/NRN/src/agreeonit/apollo_server/node_modules/bluebird/js/release/async.js:148:10)
at Immediate.Async.drainQueues (/Users/mgregory/NRN/src/agreeonit/apollo_server/node_modules/bluebird/js/release/async.js:17:14)
at runCallback (timers.js:574:20)
at tryOnImmediate (timers.js:554:5)
at processImmediate [as _immediateCallback] (timers.js:533:5)

Answer 1

我发现正在发布堆栈跟踪，因为GraphQLOptions.debug的默认设置为true。

在初始化服务器时将其设置为false会清除所有内容。

结论：抛出异常是正确的方法。

如何在graphql apollo-server突变解析器中发出错误信号？

1 个答案: