make basic requests to Amazon SQS using the AWS SDK for Java

Description

Demo Code

/*/*from w w w  . java 2s  .  c  om*/
 * Copyright 2010-2012 Amazon.com, Inc. or its affiliates. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License").
 * You may not use this file except in compliance with the License.
 * A copy of the License is located at
 *
 *  http://aws.amazon.com/apache2.0
 *
 * or in the "license" file accompanying this file. This file is distributed
 * on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
 * express or implied. See the License for the specific language governing
 * permissions and limitations under the License.
 */
import java.util.List;
import java.util.Map.Entry;

import com.amazonaws.AmazonClientException;
import com.amazonaws.AmazonServiceException;
import com.amazonaws.auth.PropertiesCredentials;
import com.amazonaws.services.sqs.AmazonSQS;
import com.amazonaws.services.sqs.AmazonSQSClient;
import com.amazonaws.services.sqs.model.CreateQueueRequest;
import com.amazonaws.services.sqs.model.DeleteMessageRequest;
import com.amazonaws.services.sqs.model.DeleteQueueRequest;
import com.amazonaws.services.sqs.model.Message;
import com.amazonaws.services.sqs.model.ReceiveMessageRequest;
import com.amazonaws.services.sqs.model.SendMessageRequest;

/**
 * This sample demonstrates how to make basic requests to Amazon SQS using the
 * AWS SDK for Java.
 * <p>
 * <b>Prerequisites:</b> You must have a valid Amazon Web
 * Services developer account, and be signed up to use Amazon SQS. For more
 * information on Amazon SQS, see http://aws.amazon.com/sqs.
 * <p>
 * <b>Important:</b> Be sure to fill in your AWS access credentials in the
 *                   AwsCredentials.properties file before you try to run this
 *                   sample.
 * http://aws.amazon.com/security-credentials
 */
public class SimpleQueueServiceSample {

    public static void main(String[] args) throws Exception {
        /*
         * Important: Be sure to fill in your AWS access credentials in the
         *            AwsCredentials.properties file before you try to run this
         *            sample.
         * http://aws.amazon.com/security-credentials
         */
        AmazonSQS sqs = new AmazonSQSClient(new PropertiesCredentials(
                SimpleQueueServiceSample.class
                        .getResourceAsStream("AwsCredentials.properties")));

        System.out.println("===========================================");
        System.out.println("Getting Started with Amazon SQS");
        System.out.println("===========================================\n");

        try {
            // Create a queue
            System.out
                    .println("Creating a new SQS queue called MyQueue.\n");
            CreateQueueRequest createQueueRequest = new CreateQueueRequest(
                    "MyQueue");
            String myQueueUrl = sqs.createQueue(createQueueRequest)
                    .getQueueUrl();

            // List queues
            System.out.println("Listing all queues in your account.\n");
            for (String queueUrl : sqs.listQueues().getQueueUrls()) {
                System.out.println("  QueueUrl: " + queueUrl);
            }
            System.out.println();

            // Send a message
            System.out.println("Sending a message to MyQueue.\n");
            sqs.sendMessage(new SendMessageRequest(myQueueUrl,
                    "This is my message text."));

            // Receive messages
            System.out.println("Receiving messages from MyQueue.\n");
            ReceiveMessageRequest receiveMessageRequest = new ReceiveMessageRequest(
                    myQueueUrl);
            List<Message> messages = sqs.receiveMessage(
                    receiveMessageRequest).getMessages();
            for (Message message : messages) {
                System.out.println("  Message");
                System.out.println("    MessageId:     "
                        + message.getMessageId());
                System.out.println("    ReceiptHandle: "
                        + message.getReceiptHandle());
                System.out.println("    MD5OfBody:     "
                        + message.getMD5OfBody());
                System.out.println("    Body:          "
                        + message.getBody());
                for (Entry<String, String> entry : message.getAttributes()
                        .entrySet()) {
                    System.out.println("  Attribute");
                    System.out.println("    Name:  " + entry.getKey());
                    System.out.println("    Value: " + entry.getValue());
                }
            }
            System.out.println();

            // Delete a message
            System.out.println("Deleting a message.\n");
            String messageRecieptHandle = messages.get(0)
                    .getReceiptHandle();
            sqs.deleteMessage(new DeleteMessageRequest(myQueueUrl,
                    messageRecieptHandle));

            // Delete a queue
            System.out.println("Deleting the test queue.\n");
            sqs.deleteQueue(new DeleteQueueRequest(myQueueUrl));
        } catch (AmazonServiceException ase) {
            System.out
                    .println("Caught an AmazonServiceException, which means your request made it "
                            + "to Amazon SQS, but was rejected with an error response for some reason.");
            System.out.println("Error Message:    " + ase.getMessage());
            System.out.println("HTTP Status Code: " + ase.getStatusCode());
            System.out.println("AWS Error Code:   " + ase.getErrorCode());
            System.out.println("Error Type:       " + ase.getErrorType());
            System.out.println("Request ID:       " + ase.getRequestId());
        } catch (AmazonClientException ace) {
            System.out
                    .println("Caught an AmazonClientException, which means the client encountered "
                            + "a serious internal problem while trying to communicate with SQS, such as not "
                            + "being able to access the network.");
            System.out.println("Error Message: " + ace.getMessage());
        }
    }
}
make basic requests to Amazon SQS using the AWS SDK for Java - Java AWS

Description

Demo Code

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