How to Set Up Java Configuration and Display Name in Spring 4 with Tomcat

How do I set up Java configuration and display names in a Spring 4 application running on Tomcat?

<context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>/WEB-INF/applicationContext.xml</param-value>
</context-param>

Configuring a Spring 4 application using Java configuration in Tomcat involves setting up the application context and defining necessary beans. Additionally, displaying a custom name can enhance readability in the deployment environment.

@Configuration
public class AppConfig {
    @Bean
    public MyBean myBean() {
        return new MyBean();
    }
}

@WebServlet("/display")
public class DisplayServlet extends HttpServlet {
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        response.getWriter().write("Application Display Name: My Spring App");
    }
}

Causes

• Incorrect context configuration file path.
• Misnaming beans or parameters in the configuration.
• Tomcat server not recognizing the Spring context.

Solutions

• Ensure the correct path to the context configuration file is specified in web.xml.
• Use proper naming conventions for beans and parameters in your Spring configuration.
• Verify that Tomcat is properly configured to deploy the Spring application.

Mistake: Not specifying the correct context configuration file in web.xml.

Solution: Verify the <param-value> for contextConfigLocation is the correct path to your Spring configuration.

Mistake: Deploying the application without compiling the Java code first.

Solution: Ensure your project is built properly before deploying to Tomcat.