Deploying a Java Application to an ECS Instance in Eclipse

With the rapid development of cloud computing technology, an increasing number of developers are deploying applications to Alibaba Cloud Elastic Compute Service (ECS) instances. This tutorial describes how to deploy a Java application developed locally to an Alibaba Cloud ECS instance using Cloud Toolkit.

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Develop an Application Locally

The coding method is similar no matter whether you compile Java applications that run on the cloud or locally. Therefore, this article takes a Java servlet for printing “Hello World” on a Web page as an example to explain the deployment method.

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public class IndexServlet extends HttpServlet {
private static final long serialVersionUID = -112210702214857712L;
@Override
public void doGet( HttpServletRequest req, HttpServletResponse resp ) throws ServletException, IOException {
PrintWriter writer = resp.getWriter();
// Demo: Use Alibaba Cloud Toolkit to modify the code of a local application and deploy the application to the cloud.
writer.write("Deploy from alibaba cloud toolkit. 2018-10-24");
return;
}
@Override
protected void doPost( HttpServletRequest req, HttpServletResponse resp ) throws ServletException, IOException {
return;
}}

Install Plug-in

Alibaba Cloud provides an Eclipse-based plug-in to help developers efficiently deploy applications written in the local IDE to ECS instances.

Configure the Plug-in Preferences

After installing the plug-in, configure the preferences by choosing:

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Deploy the Application

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Description of Deployment Parameters

  • Deploy File: Two options are available.
  • Maven Build: If Maven is used to build the current project, you can use Alibaba Cloud Toolkit to directly build and deploy the application.
  • Upload File: If Maven is not used to build the current project, or a locally packaged deployment file already exists, you can select and directly upload the local deployment file.
  • Target Deploy ECS: Select a region from the drop-down list, and then select the ECS instance to be deployed in the region.
  • Deploy location: Enter the deployment path on the ECS instance, for example, /root/tomcat/webapps.
  • Command: Enter the application startup command, for example, sh /root/restart.sh. This parameter specifies the command to be executed after the application package is deployed. For a Java program, it is usually a Tomcat startup command.

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