👀 Views: 1 💬 Answers: 1 📅 Created: 2025-06-04

java spring tomcat webxml Java

I'm writing unit tests and I've searched everywhere and can't find a clear answer... I'm working on a project and hit a roadblock. I'm deploying a Spring MVC application on Tomcat 9, and I've defined a context parameter in my `web.xml` file, but it seems to be ignored when the application runs. Here's how I've set it up: in my `web.xml`, I have the following configuration: ```xml <web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee" ...> <context-param> <param-name>myParam</param-name> <param-value>myValue</param-value> </context-param> <servlet> <servlet-name>myServlet</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>myServlet</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> </web-app> ``` In my Spring configuration class, I'm trying to access this parameter using the following code: ```java import org.springframework.beans.factory.annotation.Value; import org.springframework.stereotype.Component; @Component public class MyComponent { @Value("${myParam}") private String myParam; public String getMyParam() { return myParam; } } ``` However, when I debug the application, `myParam` is coming up as `null`. I've double-checked that the `web.xml` file is in the right place under `src/main/webapp/WEB-INF`. I also ensured that the Spring configuration is correctly set up to scan the package where `MyComponent` resides. Here’s what I’ve tried so far: 1. Verified that the `web.xml` is valid and properly formatted. 2. Confirmed that `@Value` works for other properties defined in my `application.properties` file. 3. Attempted to access the context parameter using the `ServletContext` directly: ```java @Autowired private ServletContext servletContext; public String getMyParamDirectly() { return servletContext.getInitParameter("myParam"); } ``` This also returns `null`. I suspect there may be a lifecycle scenario or some misconfiguration, but I need to pinpoint the question. Any insights or suggestions on how to properly access context parameters in this setup would be greatly appreciated! How would you solve this? My development environment is Linux. Is there a better approach? This is for a desktop app running on Windows 10. Am I missing something obvious?