How to put an Item in aws DynamoDb using aws Lambda with JAVA

Question

I have created AWS Java Lambda project from ECLIPSE IDE. In the handle request section I want to process the request and insert it into a AWS DynamoDB table. In

I can see this can be easily done using node.js. Lot of code samples are available. Is there a proper JAVA help available. I am new to JAVA and struggling to find this. Any help is appreciated.

import com.amazonaws.services.lambda.runtime.Context;
import com.amazonaws.services.lambda.runtime.RequestHandler;
public class LambdaHandler implements RequestHandler<Object, Object> {
    @Override
    public Object handleRequest(Object input, Context context) {
        context.getLogger().log("Input: " + input);
        // TODO: implement DYNAMO DB INSERT
        return input;
    }

}

Stefan De Laet · Accepted Answer · 2015-11-12 13:18:53Z

1

Use the api in package com.amazonaws.services.dynamodbv2 (maven dependency artifactID= aws-java-sdk-dynamodb )

AWSCredentials creds = new BasicAWSCredentials("myacceskey","mysecretkey");
AmazonDynamoDBClient dyndbclient = new AmazonDynamoDBClient(creds);
String tableName = "myDynamoDbTable"
Map<String, AttributeValue> dbItem = new HashMap<String, AttributeValue>();
//TODO put key/values from request in dbItem
dyndbclient.putItem(tableName, dbItem);

You may also want to redefine your lambda handler function, so that you have a better cast input parameter than your current (Object input )

answered Nov 12, 2015 at 13:18

Stefan De Laet

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6 Comments

omuthu Over a year ago

Assuming he is using dynamodb in the same account as in lambda function, he can ignore the credentials while creating AmazonDynamoDBClient object. AmazonDynamoDBClient dynamoDBClient = new AmazonDynamoDBClient(); Just providing enough permissions for operations on DynamoDB in Lambda function role will suffice.

ejo Over a year ago

As I said I am new to JAVA. I configured the project using ECLIPSE IDE.The "import com.amazonaws.services.dynamodbv2 cannot be resolved" is the error ECLIPSE is showing when I tried to include this.

Stefan De Laet Over a year ago

Try adding the following maven dependency to pom.xml (in the root of your project) : <dependency> <groupId>com.amazonaws</groupId> <artifactId>aws-java-sdk-dynamodb</artifactId> <version>LATEST</version> </dependency>

ejo Over a year ago

Not able to find any pom.xml file in my root directory. Everything works fine when I create JAVA Project. Issue starts when I create JAVA LAMDA Projecr

Stefan De Laet Over a year ago

you can download the jar file dependency here ( central.maven.org/maven2/com/amazonaws/aws-java-sdk-dynamodb/…) Than, add it to your eclipse project: wiki.eclipse.org/…

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