我通过命令以下命令创建了无服务器框架的函数:
sls function create some/api
然后创建了Schelton代码:
'use strict';
module.exports.handler = function(event, context, cb) {
return cb({
message: 'Go Serverless! Your Lambda function executed successfully!'
});
};
,响应模板如下:
s-function.json
"responses": {
"400": {
"statusCode": "400"
},
"default": {
"statusCode": "200",
"responseParameters": {},
"responseModels": {
"application/json;charset=UTF-8": "Empty"
},
"responseTemplates": {
"application/json;charset=UTF-8": ""
}
}
}
但是,当我将错误对象返回到 cb(err, null)
的回调函数时,将正确显示错误消息,但状态代码为200。
如果我更改为cb("400", err)
这样的调用回调函数,则状态代码正确返回400,但是响应主体不好:{"errorMessage":"400"}
。
是否有任何良好的设置可以显示Bot Statuscode(不仅400,而且401,403,404,500 ...等)和错误消息?
我使用以下响应模板。如果从lambda函数返回的消息匹配响应模板中指定的selectionPattern
,则将返回正确的状态代码。
"responseTemplate": {
"400": {
"selectionPattern": "^\[BadRequest\].*",
"statusCode": "400"
},
"401": {
"selectionPattern": "^\[Unauthorized\].*",
"statusCode": "401"
},
"403": {
"selectionPattern": "^\[Forbidden\].*",
"statusCode": "403"
},
"404": {
"selectionPattern": "^\[NotFound\].*",
"statusCode": "404"
},
"409": {
"selectionPattern": "^\[Conflict\].*",
"statusCode": "409"
},
"500": {
"selectionPattern": "^\[Process exited|ServerError\].*",
"statusCode": "500"
},
"504": {
"selectionPattern": "^\[Task timed out\].*",
"statusCode": "504"
},
"default": {
"statusCode": "200",
"responseParameters": {},
"responseModels": {},
"responseTemplates": {
"application/json": ""
}
}
}