AWS lambda 与API gateway 集成时，参数（mapping）的传递方式

一、非代理lambda（自定义lambda) 需要自己构建映射

eg：

{

"city": "$input.params('city')",

"time": "$input.params('time')",

"day": "$input.params('day')",

"name": "$inputRoot.callerName"

}

　　

https://oq7all40u3.execute-api.cn-north-1.amazonaws.com.cn/test/test?time=123456

event 会收到您传递的数据

{

"time": "123456"

}

二、代理集成lambda

在 Lambda 代理集成中，当客户端提交 API 请求时，API Gateway 会按原样将原始请求传递给集成的 Lambda 函数，但不会保留请求参数的顺序。

eg： https://oq7all40u3.execute-api.cn-north-1.amazonaws.com.cn/test/test?time=123456

Lambda event收到的数据

{

"resource": "/test",

"path": "/test",

"httpMethod": "GET",

"headers": {

"accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3",

"accept-encoding": "gzip, deflate, br",

"accept-language": "zh-CN,zh;q=0.9,en-US;q=0.8,en;q=0.7,ja-JP;q=0.6,ja;q=0.5,zh-TW;q=0.4",

"Host": "oq7all40u3.execute-api.cn-north-1.amazonaws.com.cn",

"sec-fetch-mode": "navigate",

"sec-fetch-site": "none",

"sec-fetch-user": "?1",

"upgrade-insecure-requests": "1",

"User-Agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/77.0.3865.90 Safari/537.36",

"X-Amzn-Trace-Id": "Root=1-5d8d8250-1f8874904764cbb8b777e598",

"X-Forwarded-For": "119.254.228.2",

"X-Forwarded-Port": "443",

"X-Forwarded-Proto": "https"

},

"multiValueHeaders": {

"accept": ["text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3"],

"accept-encoding": ["gzip, deflate, br"],

"accept-language": ["zh-CN,zh;q=0.9,en-US;q=0.8,en;q=0.7,ja-JP;q=0.6,ja;q=0.5,zh-TW;q=0.4"],

"Host": ["oq7all40u3.execute-api.cn-north-1.amazonaws.com.cn"],

"sec-fetch-mode": ["navigate"],

"sec-fetch-site": ["none"],

"sec-fetch-user": ["?1"],

"upgrade-insecure-requests": ["1"],

"User-Agent": ["Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/77.0.3865.90 Safari/537.36"],

"X-Amzn-Trace-Id": ["Root=1-5d8d8250-1f8874904764cbb8b777e598"],

"X-Forwarded-For": ["119.254.228.2"],

"X-Forwarded-Port": ["443"],

"X-Forwarded-Proto": ["https"]

},

"queryStringParameters": {

"time": "123456"

},

"multiValueQueryStringParameters": {

"time": ["123456"]

},

"pathParameters": null,

"stageVariables": null,

"requestContext": {

"resourceId": "e837yf",

"resourcePath": "/test",

"httpMethod": "GET",

"extendedRequestId": "AqFMnH2NBTIFXSQ=",

"requestTime": "27/Sep/2019:03:30:24 +0000",

"path": "/test/test",

"accountId": "936669166135",

"protocol": "HTTP/1.1",

"stage": "test",

"domainPrefix": "oq7all40u3",

"requestTimeEpoch": 1569555024662,

"requestId": "dc58012d-438c-4298-bc8d-75dd4bee8562",

"identity": {

"cognitoIdentityPoolId": null,

"accountId": null,

"cognitoIdentityId": null,

"caller": null,

"sourceIp": "119.254.228.2",

"principalOrgId": null,

"accessKey": null,

"cognitoAuthenticationType": null,

"cognitoAuthenticationProvider": null,

"userArn": null,

"userAgent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/77.0.3865.90 Safari/537.36",

"user": null

},

"domainName": "oq7all40u3.execute-api.cn-north-1.amazonaws.com.cn",

"apiId": "oq7all40u3"

},

"body": null,

"isBase64Encoded": false

}

　　

三、参数格式为路径参数

eg：传入参数123456 方式

https://oq7all40u3.execute-api.cn-north-1.amazonaws.com.cn/test/test/123456

需要使用代理资源{proxy+}