Very simple war file

Please Use the following link to download the test WAR file. Click here to download the SampleWebApp. J2EE has various components and services and the J2EE components can be categorised into two major groups. In this post, we are going to use the Simple Web Application designed for Tomcat and Weblogic and can also be used for other application servers like JBoss and Websphere. XML files Deployment Descriptors [ weblogic. This way you can create a minimal and working web application for the weblogic application server and the same code can be used for Tomcat and JBoss, and there would be some little modifications may require for Websphere to make the same code to work.

Once you have imported the Project, you can view the code and modify it and rebuild it and Deploy it to your local Application Server. The Home Page of the application is common for all the application servers and it has a link hyperlink to reach the SnoopServlet.

Dont Get confused by seeing a different URL welcome. We intentionally designed our SnoopServlet to invoke the welcome. So the Snoop servlet here just invokes the welcome. Since the Servlet code is usually big, We have just given the main and primary function of servlet which is processRequest.

As said earlier, the welcome. Display what is inside the WAR file without Extracting. There are two types of entries in the web. The following web. It specifies the simplest form of login process: the BASIC authentication model, which causes the browser to prompt the user with a simple pop-up username and password dialog box:. We can do the equivalent configuration for a given servlet using the SecurityServlet annotation with an HttpConstraint annotation element as follows:. You can add this annotation to our test servlet or add the XML example setup to the web.

Access to protected areas is granted to user roles, not individual users. A user role is effectively just a group of users; instead of granting access to individual users by name, you grant access to roles, and users are assigned one or more roles. A user role is an abstraction from users. Actual user information name and password, etc. Generally, application servers have their own tools for creating users and assigning individuals or actual groups of users their roles.

A given username may have many roles associated with it. Before we move on, there is one more piece of the security constraint to discuss: the transport guarantee.

NONE is equivalent to leaving out the section, which indicates that no special transport is required. This is the standard for normal web traffic, which is generally sent in plain text over the network. This implies the use of digital signatures or some other method of validating the data at the receiving end, but it does not require that the data be encrypted and hidden while it is transported.

In practice, the only widely used secure transport in web browsers is SSL. We can configure the equivalent transport security for a servlet using the ServletSecurity annotation along with the HttpMethodConstraint annotation, as follows:.

Combining the transport security with a rolesAllowed annotation can be done as shown in the preceding example. This section shows how to declare a custom login form to perform user login. In our example, we showed the BASIC method, which uses the standard web browser login and password dialog.

The form data can come from a static HTML page or from one generated by a servlet. Again, form data is sent in plain text unless otherwise protected by a transport guarantee SSL. It specifies that the client must be identified using a client-side public key certificate. This implies the use of a protocol like SSL, which allows for secure exchange and mutual authentication using digital certificates. The exact method of setting up a client-side certificate is browser-dependent.

The FORM method is most useful because it allows us to customize the look of the login page we recommend using SSL to secure the data stream. We can also specify an error page to use if the authentication fails. The login page must contain an HTML form with a specially named pair of fields for the name and password. Here is a simple login. Therefore, you can effectively log out the user by calling invalidate on the session:.

With Servlet 3. All we have to do is arrange our own login servlet that accepts a username and password securely and then calls the login method. This gives you great flexibility over how and when the user login occurs. And, of course, you can log the user out with the corresponding logout method. We should mention that in addition to the declarative security offered by the web.

The name of the authenticated user is available through the method HttpServletRequest get RemoteUser , and the type of authentication provided can be determined with the getAuthType method.

Servlets can work with security roles using the isUserInRole method. Doing this requires adding some additional mappings in the web. For advanced applications, a java. Principal object for the user can be retrieved with the getUserPrincipal method of the request. In the case where a secure transport like SSL was used, the method isSecure returns true , and detailed information about how the principal was authenticated—the cipher type, key size, and certificate chain—is made available through request attributes.

Skip to main content. Start your free trial. WAR Files and Deployment. Configuration with web. URL Pattern Mappings. Deploying HelloClient. Discrete Mathematics. Ethical Hacking. Computer Graphics. Software Engineering. Web Technology. Cyber Security. C Programming. Control System. Data Mining. Data Warehouse. Javatpoint Services JavaTpoint offers too many high quality services. What is war file? Advantage of war file saves time : The war file combines all the files into a single unit.

How to create war file? Go inside the project directory of your project outside the WEB-INF , then write the following command: jar -cvf projectname. How to deploy the war file? There are two ways to deploy the war file. By server console panel By manually having the war file in specific folder of server. Now, you are able to access the web project through browser.

Note: server will extract the war file internally.