JspApplicationContext (JSP 2.3 API Documentation - Apache Tomcat 8.5.57)

javax.servlet.jsp

## Interface JspApplicationContext

-     public interface JspApplicationContext

  Stores application-scoped information for the JSP container.

  Since:
    2.1

- - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `void` | `addELContextListener(javax.el.ELContextListener listener)` Registers an `ELContextListener` that will be notified whenever a new `ELContext` is created.
    `void` | `addELResolver(javax.el.ELResolver resolver)` Adds an `ELResolver` to the chain of EL variable and property management within JSP pages and Tag files.
    `javax.el.ExpressionFactory` | `getExpressionFactory()` Returns the JSP container's `ExpressionFactory` implementation for EL use.

- - ### Method Detail

    - #### addELContextListener

          void addELContextListener(javax.el.ELContextListener listener)

      Registers an `ELContextListener` that will be notified whenever a new `ELContext` is created.

      At the very least, any `ELContext` instantiated will have reference to the `JspContext` under `JspContext.class`.

      Parameters:
        `listener` - The listener to add

    - #### addELResolver

          void addELResolver(javax.el.ELResolver resolver)

      Adds an `ELResolver` to the chain of EL variable and property management within JSP pages and Tag files.

      JSP has a default set of ELResolvers to chain for all EL evaluation:

      - `ImplicitObjectELResolver`
      - `ELResolver` instances registered with this method
      - `MapELResolver`
      - `ListELResolver`
      - `ArrayELResolver`
      - `BeanELResolver`
      - `ScopedAttributeELResolver`
      Parameters:
        `resolver` - an additional resolver
      Throws:
        `java.lang.IllegalStateException` - if called after the application's `ServletContextListeners` have been initialized.

    - #### getExpressionFactory

          javax.el.ExpressionFactory getExpressionFactory()

      Returns the JSP container's `ExpressionFactory` implementation for EL use.

      Returns:
        an `ExpressionFactory` implementation

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