What is ServletRequestAware?
What is ServletRequestAware?
ServletRequestAware is a better approach because it decouples action methods from static accessors. In order to test something using ServletActionContext you need to mock static methods and mock the request. To test ServletRequestAware methods you only need to mock the request.
What is HttpServletRequest and HttpServletResponse in Java?
The HttpServletRequest object can be used to retrieve incoming HTTP request headers and form data. The HttpServletResponse object can be used to set the HTTP response headers (e.g., content-type) and the response message body.
What are the aware interfaces in struts2?
The four aware interfaces are:
- apache. struts2. interceptor. SessionAware.
- apache. struts2. util. ServletContextAware.
- apache. struts2. interceptor. ServletRequestAware.
- apache. struts2. interceptor. ServletResponseAware.
How do I get application context in struts2?
In Struts 2 , you can use the following two methods to get the ServletContext object.
- ServletActionContext. Get the ServletContext object directly from org. apache. struts2. ServletActionContext.
- ServletContextAware. Make your class implements the org. apache. struts2. util.
How do I get HttpServletResponse?
How to get the HttpServletResponse in Struts 2
- ServletActionContext. Access HttpServletResponse via ServletActionContext class.
- ServletResponseAware. Access HttpServletResponse by implementing the ServletResponseAware interface and override the setServletResponse() method.
What is ServletActionContext?
ServletActionContext is not part of standard JSP/Servlet specs , it is provided by Struts, it provides a way to access to web objects like servlet parameters, request attributes and things like the HTTP session.
What is the difference between HttpServletRequest and HttpServletResponse?
HttpServletRequest “extends the ServletRequest interface to provide request information for HTTP servlets.” HttpServletResponse “extends the ServletResponse interface to provide HTTP-specific functionality in sending a response. For example, it has methods to access HTTP headers and cookies.”
What is the main job of HttpServletRequest and HttpServletResponse?
protected void doGet(HttpServletRequest req, HttpServletResponse res) handles the GET request. It is invoked by the web container. protected void doPost(HttpServletRequest req, HttpServletResponse res) handles the POST request. It is invoked by the web container.
What is controller in Struts2?
The main job of Controller is to decide which Action class will handle which request And controller does this with the help of Configuration defined by us in struts. xml file or by annotations in case of Struts 2.
What are the core components of a Struts2 based application?
The core components of Struts2 are Action, Interceptors and Result pages. Struts2 provides many ways to create Action classes and configure them via struts.
How do I find application context?
You can go for getApplicationContext() if you wanna get context of whole application. If you want to get context of current class you can use getBaseContext() instead.
What is MockHttpServletResponse?
public class MockHttpServletResponse extends Object implements HttpServletResponse. Mock implementation of the HttpServletResponse interface. As of Spring Framework 5.0, this set of mocks is designed on a Servlet 4.0 baseline.
What are the uses of ServletRequest?
ServletRequest allows the Servlet to access information such as: Names of the parameters are passed by the client. The protocol [scheme] such as the HTIP POST and PUT methods being used by the client. The names of the remote host that are made the request.
What are the ServletRequest methods?
Methods of ServletRequest interface
| Method | Description |
|---|---|
| public int getContentLength() | Returns the size of the request entity data, or -1 if not known. |
| public String getCharacterEncoding() | Returns the character set encoding for the input of this request. |
