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If you do not need the demo project, visit the following URL to download the API Gateway signing SDK:

Obtain the API Gateway signing SDK from the enterprise administrator.

Decompress the downloaded package and reference the obtained JAR files as dependencies, as highlighted in the following figure.

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Figure 1 JAR Files
  1. Generate an AK/SK. (If an AK/SK file has already been obtained, skip this step and locate the downloaded AK/SK file. Generally, the file name will be credentials.csv.)

    1. Log in to the console, enter the My Credentials page, and choose Access Keys > Create Access Key.
    2. In the Create Access Key dialog box that is displayed, use the login password for verification.
    3. Click OK, open the credentials.csv file, and save the key file as prompted. The access key file is saved in the default downloads folder of the browser. Then, the access key (Access Key Id and Secret Access Key) is obtained.
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  2. Download and decompress the demo project.
  3. Import the demo project to Eclipse.

    Figure 1 Selecting Existing Projects into Workspace
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    Figure 2 Selecting the demo project
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    Figure 3 Structure of the demo project
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  4. Download and decompress the demo project.
  5. Import the demo project to Eclipse.

    Figure 2 Selecting Existing Projects into Workspace
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    Figure 3 Selecting the demo project
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    Figure 4 Structure of the demo project

  6. Sign the request.

    The request signing method is integrated in the JAR files imported in 3. The request needs to be signed before it is sent. The signature will then be added as part of the HTTP header to the request.

    The demo code is classified into the following classes to demonstrate signing and sending the HTTP request:

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  7. Region

    A region is a physical location where a cloud service is deployed. Availability zones (AZ) in the same region can communicate with each other over an intranet but AZs in different regions cannot communicate with each other. By creating cloud resources in different regions, you can design applications to better meet customer requirements and comply with local laws and regulations.

  8. AZ

    An AZ contains one or more physical data centers. It has independent cooling, fire extinguishing, moisture-proof, and electricity facilities. Within an AZ, computing, network, storage, and other resources are logically divided into multiple clusters. AZs within a region are interconnected using high-speed optical fibers to allow users to build cross-AZ high-availability systems.

  9. Project

    Projects group and isolate compute, storage, and network resources across physical regions. A default project is provided for each region, and subprojects can be created under each default project. Users can be granted permissions to access all resources in a specific project. For more refined access control, create subprojects under a project and purchase resources in the subprojects. Users can then be assigned permissions to access only specific resources in the subprojects.

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    Figure 1 Project isolation model
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    Figure 1 Project isolation model