函数,显示ValidationException"/>
AWS Lambda更新函数,显示ValidationException
我正在尝试通过lamda函数更新数据。在阅读文档后,我刚刚创建了一个PUT方法并在方法中添加了lambda函数我在这里创建了一个函数,代码如下:
const AWS = require('aws-sdk'); const dynamodb = new AWS.DynamoDB({region: 'us-east-2', apiVersion: '2012-08-10'}); AWS.config.update({region: 'us-east-2', apiVersion: '2012-08-10'}); var docClient = new AWS.DynamoDB.DocumentClient(); exports.handler = (event, context, callback) => { const params = { TableName: "Would-You-Rather", Key:{ "QuestionID": "a670b861-8a34-4bda-93e0-8bbf2cd25eb6", }, UpdateExpression: "set would = :w, rather = :r, wouldClick = :wC, , ratherClick = :rC ", ExpressionAttributeValues:{ ":w": "Working", ":r": "Working", ":wC": 12, ":rC": 1 }, ReturnValues:"UPDATED_NEW" }; console.log("Updating the item..."); docClient.update(params, function(err, data) { if (err) { console.error("Unable to update item. Error JSON:", JSON.stringify(err, null, 2)); } else { console.log("UpdateItem succeeded:", JSON.stringify(data, null, 2)); } }); };
但是当我测试功能时,它会显示出来
"message": "Invalid UpdateExpression: Syntax error; token: \",\", near: \", , ratherClick\"", "code": "ValidationException",
如果我包装像这样的ExpressionAttributes
ExpressionAttributeValues:{ ":w": "Working", ":r": "Working", ":wC": "12", ":rC": "1" },
然后显示此错误
"errorType": "Runtime.UserCodeSyntaxError", "errorMessage": "SyntaxError: Invalid or unexpected token",
这是我的POST方法,可以很好地添加它,因为它可能有助于更好地理解
const AWS = require('aws-sdk'); const dynamodb = new AWS.DynamoDB({region: 'us-east-2', apiVersion: '2012-08-10'}); exports.handler = (event, context, callback) => { const params = { Item: { "QuestionID": { S: context.awsRequestId }, "Would": { S: event.would }, "Rather": { S: event.rather }, "wouldClick": { N: event.wouldClick }, "ratherClick": { N: event.ratherClick } }, TableName: "Would-You-Rather" }; dynamodb.putItem(params, function(err, data) { if (err) { console.log(err); callback(err); } else { console.log(data); callback(null, data); } }); };
代码笔代码
var xhr = new XMLHttpRequest();
xhr.open('PUT', '');
xhr.onreadystatechange = function(event) {
console.log(event.target.response);
}
xhr.setRequestHeader('Content-Type', 'application/json');
xhr.setRequestHeader('Authorization', 'allow');
xhr.send(JSON.stringify({Would: Coffe, Rather: Tea, wouldClick: 15, ratherClick: 13, QuestionID: 3e8976be-e763-4c69-84c3-be03ec4a38de}));
我正在尝试通过lamda函数更新数据。在阅读文档后,我刚刚创建了一个PUT方法并在方法中添加了lambda函数我在这里创建了一个函数,代码是const AWS = require('aws -...
回答如下:存在语法错误。您忘了在此处输入结束语
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AWS Lambda更新函数,显示ValidationException
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