Another case when you should use. Basic difference between getAttribute and getParameter is the return type. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. Difference between getAttribute and getParameter Ask Question. Asked 10 years, 8 months ago. Active 4 years, 3 months ago. Viewed k times. Did you try reading the JavaDocs for the relevant methods?
Related: How to servlets work? Add a comment. Active Oldest Votes. Can only return String getAttribute is for server-side usage only - you fill the request with attributes that you can use within the same request. Bozho Bozho k gold badges silver badges bronze badges. Since request attribute are stored on server side, can I set request attribute for a inter-server post-redirect-get request?
I want to send information from one server to another server in JSF through an attribute in redirect request. I am able to send via a POST request as of now. An attribute is a server variable that exists within a specified scope i. For example,consider about first. Community Bot 1 1 1 silver badge. This was a great example. This should be the accepted answer. The accepted answer is correct but for new comers an example clarified everything.
Thank you. Great answer. Maybe worth adding that scope of attributes come into play when you intercept a client's request server side and append some additional information to the request. It is crucial to know that attributes are not parameters. Can be used for any object, not just string. Intention of ConstraintLayout is to optimize and flatten the view hierarchy of your layouts by applying some rules to each view to avoid nesting.
Rules remind you of RelativeLayout , for example setting the left to the left of some other view. These percentages and fractions offer seamless positioning of the view across different screen densities and sizes.
Baseline handle long pipe with rounded corners, below the circle handle is used to align content of the view with another view reference. All the support libraries are dropping the v4 v7 v12 v13 etc tags and everything is refactored into the androidx packages. They are essentially the same but for future reference androidx will be the library that we should use in our apps.
Android studio 3. I'll try to explain it correctly in the most simple way as addition to the correct Nathan Hughes answer :. It gives a strong support for handling application layer in the multilayered architecture. On the other hand JSPs were created to support the creating of presentation layer. The init method of a servlet is called only once during initialization of the servlet. The same is true for sessions, except that the life cycle of objects in memory is different.
Personally think: request. In Action, request. The difference between request. The general web application, as chenshaizi Chen Shaobin said, is basically based on the transfer of Post mode, using getParameter to get the value. For your own control, you can pass request. For the application of Structs framework, getAttribute is used a little more, basically use getParameter. My understanding: session. According to the upstairs, if the value obtained by getParameter is not submitted or saved next time, it will be gone after the next redirect?
It must be stored somewhere before fetching. This kind of stuff can access objects. The thing after the number can use request. It is already clear , I will stop talking. Tech Community Register Log in. The difference between getAttribute getParameter of Request in Servlet. FaceBook Share. Generally, the parameters passed through forms and links use getParameter Use request. The difference between getAttribute and getParameter 1.
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