首先，有人可能會(huì)說這個(gè)問題與HTTP request body not getting to AWS lambda function via AWS API Gateway或Getting json body in aws Lambda via API gateway非常相似但是，這些問題都沒有解決使用 Golang 的問題，我一直遇到的問題是找到event與 Node.js 文檔中各處使用的參數(shù)等效的參數(shù)。這是我的 Lambda 函數(shù)：package mainimport ( "context" "encoding/json" "github.com/aws/aws-lambda-go/lambda" "github.com/aws/aws-lambda-go/events" "log")type MyReturn struct { Response string `json:"response"`}type APIGWResponse struct { IsBase64Encoded bool `json:"isBase64Encoded"` StatusCode int `json:"statusCode"` Headers map[string]string `json:"headers"` Body string `json:"body"`}func handle(ctx context.Context, name MyReturn) (APIGWResponse, error) { log.Print("Called by ", name) log.Print("context ", ctx) headers := map[string]string{"Access-Control-Allow-Origin": "*", "Access-Control-Allow-Headers": "Origin, X-Requested-With, Content-Type, Accept"} code := 200 response, error := json.Marshal(myReturn{Response:"Hello, " + name.Body}) if error != nil { log.Println(error) response = []byte("Internal Server Error") code = 500 } return APIGWResponse{true, code, headers, string(response)}, nil}func main() { lambda.Start(handle)}問題：MyReturn從 API GW 調(diào)用時(shí)，對象未填充任何值。該行l(wèi)og.Print("Called by ", name)不會(huì)將任何內(nèi)容附加到字符串Called by。請求 API GW： POST -> body: '{"name":"Bob"}', headers: {'Content-Type': 'application/json'}這是在純 JS 中執(zhí)行的，如下所示：const BASE_URL = "https://my_api_id.execute-api.us-east-1.amazonaws.com/prod/";const TRIGGER_URL = "my_lambda_function";function toGW() { fetch(BASE_URL + TRIGGER_URL, { method: 'POST', body: '{"name":"Bimesh"}', headers:{ 'Content-Type': 'application/json' } }) .then(data => data.json()) .then(json => console.log(json)) .catch(error => console.log(error));}然而，當(dāng)從 AWS Lambda 控制臺(tái)對其進(jìn)行測試時(shí)，完全相同的主體仍然有效。身體：{"name":"Bob"}
1 回答
海綿寶寶撒
TA貢獻(xiàn)1809條經(jīng)驗(yàn) 獲得超8個(gè)贊
事實(shí)證明，即使我無法在面向用戶的網(wǎng)站上找到任何關(guān)于此的文檔，文檔也確實(shí)存在。閱讀： https: //github.com/aws/aws-lambda-go/blob/master/events/README_ApiGatewayEvent.md
這是迄今為止我想出的從 API GW 接收數(shù)據(jù)和響應(yīng)請求的最簡單方法：
package main
import (
"context"
"encoding/json"
"github.com/aws/aws-lambda-go/lambda"
"github.com/aws/aws-lambda-go/events"
"log"
)
type myReturn struct {
Response string `json:"response"`
}
func handle(ctx context.Context, name events.APIGatewayProxyRequest) (events.APIGatewayProxyResponse, error) {
log.Print("Request body: ", name)
log.Print("context ", ctx)
headers := map[string]string{"Access-Control-Allow-Origin": "*", "Access-Control-Allow-Headers": "Origin, X-Requested-With, Content-Type, Accept"}
code := 200
response, error := json.Marshal(myReturn{Response:"Hello, " + name.Body})
if error != nil {
log.Println(error)
response = []byte("Internal Server Error")
code = 500
}
return events.APIGatewayProxyResponse {code, headers, string(response), false}, nil
}
func main() {
lambda.Start(handle)
}
在這種情況下，該log.Print("Request body: ", name)行會(huì)記錄準(zhǔn)確的請求正文。問題解決了。
注意：我也不必APIGWResponse從問題中創(chuàng)建那個(gè)對象，這events.APIGatewayProxyResponse是完全一樣的東西，已經(jīng)為你做了。這些對象都在這個(gè)類里面： https: //github.com/aws/aws-lambda-go/blob/master/events/apigw.go
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