Deploying a Java Application to an ECS Instance in IntelliJ IDEA
In the previous article, we have discussed how to deploy a local Java application directly to an Alibaba Cloud ECS instance. We have also seen how to use this plug-in to deploy applications on Enterprise Distributed Application Service (EDAS). This tutorial explains how to deploy a Java application that is developed in a local IntelliJ IDEA environment to an Alibaba Cloud ECS instance.
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.
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;
}}
You can download the source code through this link.
The preceding code is a standard Java project used to print the string “Hello World” on a Web page.
Install Plug-in
Alibaba Cloud provides an Intellij IDEA-based plug-in to help developers efficiently deploy applications written in the local IDE to ECS instances.
URL of the plug-in: https://www.aliyun.com/product/cloudtoolkit_en
The installation process of this Intellij IDEA-based plug-in is similar to that of a common plug-in, and will not be detailed here.
Configure the Plug-in Preferences
After installing the plug-in, click the Alibaba Cloud icon on the toolbar, as shown in the figure below.
When the following page is displayed, configure the AK and SK of your Alibaba Cloud account to complete the configuration of preferences.( If you are using a RAM user account, enter the AK and SK of the RAM user.)
Deploy the Application
In IntelliJ IDEA, right-click the project name and choose Alibaba Cloud > Deploy to ECS from the shortcut menu. The following deployment window is displayed:
In the Deploy to ECS dialog box, set the deployment parameters and click Deploy to complete the initial deployment.
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 packa
