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Creating a New Project

This section shows you how to create the new project, set up libraries, and define the structure of your program.

Java

The Java project consists of one source file, and SOAP proxy classes generated by Apache Axis from the web service's WSDL file.

To create the Java project

Using your favorite text editor, create a file named DoGetAccountBalance.java.

Enter, or copy and paste, the following text into the new file:

// Import classes

public class DoGetAccountBalance {

    // Define constants

    // Define authentication routines

    // Define other support routines

    public static void main( String [] args ) {
        try {

            // Set up the web service client

            // Construct the request

            // Calculate and set the request authentication parameters

            // Set other parameters

            // Make the request

            // Check for and print results and errors

        } catch (Exception e) {
            e.printStackTrace();
            System.exit(1);
        }
    }
}

Generate the SOAP proxy classes with Apache Axis.
1. Ensure that Apache Axis is set up properly, as described in Prerequisites.
2. From a command prompt, change the current working directory to your project's directory, then run the following command:
```
java org.apache.axis.wsdl.WSDL2Java -v -W http://mechanicalturk.amazonaws.com/AWSMechanicalTurk/2006-10-31/AWSMechanicalTurkRequester.wsdl
```
  The generated source files are created in a new directory: com/amazonaws/mechanicalturk/
In DoGetAccountBalance.java, add a line to import the generated Axis classes:
```
// Import classes
import com.amazonaws.mturk.requester.doc._2006_10_31.*;
	
```

C#

The C# project uses the "Console Application" template provided by Microsoft Visual C#. The code is placed in the Program.cs file provided by the template, and accesses the web service's SOAP interface using a .NET Web Resource.

To create the C# project

Open Microsoft Visual C# 2006 Express Edition. If you are using another version of Microsoft Visual Studio, these steps might be slightly different.
Create a new project using the "Console Application" template.
1. From the File menu, select New Project... A dialog box opens.
2. From the available templates, select Console Application.
3. For the name of the project, enter DoGetAccountBalance.
4. Click OK. A new project is created with a Program.cs file and an empty main routine.

Replace the contents of Program.cs with the following text:

// Use classes
using System;
using System.Collections.Generic;
using System.Text;

namespace DoGetAccountBalance
{
    class Program
    {
        // Define constants

        // Define authentication routines

        // Define other support routines

        static void Main(string[] args)
        {
            try
            {

                // Set up the web service client

                // Construct the request

                // Calculate and set the request authentication parameters

                // Set other parameters

                // Make the request

                // Check for and print results and errors

            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.ToString());
            }

            // Pause the output so you can run this directly in Visual Studio.
            Console.WriteLine("Press Enter to exit...");
            Console.Read();
        }
    }
}

Generate the SOAP proxy classes by adding a .NET Web Reference to the project.
1. From the Project menu, select Add Web Reference... A dialog box opens.
2. For the URL, enter the URL of the web service WSDL:
```
http://mechanicalturk.amazonaws.com/AWSMechanicalTurk/2006-10-31/AWSMechanicalTurkRequester.wsdl
```
3. Click Go. The service WSDL is retrieved over the network.
4. Click Add Reference. The Web Reference classes are generated and added to the project.
In Program.cs, add a line to use the generated Web Reference classes, as follows:
```
// Use classes
[...]
using DoGetAccountBalance.com.amazonaws.mechanicalturk;
	
```

Perl

The Perl project consists of one source file.

To create the Perl project

Using your favorite text editor, create a file named GetAccountBalance.pl.

Enter, or copy and paste, the following text into the new file:

#!/usr/bin/perl

use strict;
use warnings;

# Use modules

# Define constants

# Define authentication routines

# Calculate the request authentication parameters

# Construct the request

# Make the request

# Check for and print results and errors

If necessary, adjust the #!/usr/bin/perl line at the top of the file to use the path to Perl on your system.

PHP

The PHP project consists of one source file.

To create the PHP project

Using your favorite text editor, create a file named GetAccountBalance.php.

Enter, or copy and paste, the following text into the new file:

<?php

// Define constants

// Define authentication routines

// Calculate the request authentication parameters

// Construct the request

// Make the request

// Check for and print results and errors

?>

Python (REST)

The Python (REST) project consists of one source file.

To create the Python (REST) project

Using your favorite text editor, create a file named GetAccountBalance.py.

Enter, or copy and paste, the following text into the new file:

#!/usr/bin/env python

# Import libraries

# Define constants

# Define authentication routines

# Calculate the request authentication parameters

# Construct the request

# Make the request

# Check for and print results and errors

Python (SOAP)

The Python (SOAP) project consists of one source file.

To create the Python (SOAP) project

Using your favorite text editor, create a file named GetAccountBalance.py.

Enter, or copy and paste, the following text into the new file:

#!/usr/bin/env python

# Import libraries

# Define constants

# Define authentication routines

# Set up the web service client

# Calculate the request authentication parameters

# Make the request

# Check for and print results and errors

Ruby (REST)

The Ruby (REST) project consists of one source file.

To create the Ruby (REST) project

Using your favorite text editor, create a file named GetAccountBalance.rb.

Enter, or copy and paste, the following text into the new file:

#!/usr/bin/env ruby

# Require libraries

# Define constants

# Define authentication routines

# Calculate the request authentication parameters

# Construct the request

# Make the request

# Check for and print results and errors

Ruby (SOAP)

The Ruby (SOAP) project consists of one source file.

To create the Ruby (SOAP) project

Using your favorite text editor, create a file named GetAccountBalance.rb.

Enter, or copy and paste, the following text into the new file:

#!/usr/bin/env ruby

# Require libraries

# Define constants

# Define authentication routines

# Set up the web service client

# Calculate the request authentication parameters

# Construct the request

# Make the request

# Check for and print results and errors