Retrieving data in servlet in java

Forum: JSP. Retrieving data from a servlet then forward to JSP page. I want to display data to jsp page using the forward method of RequestDispatcher in my servlet. The servlet handles and retrieves data from a textfile then set attributes for the request object. Mike Zal. I like Can you post some code, because there are quite a few things that can go wrong. I have a feeling that you are directly accessing the JSP page instead of using the Servlet's mapped url.

Im following the MVC pattern where my servlet will be the controller and the view will be the jsp page. What i want is when I access the JSP page it will automatically call the servlet where it handles data retrieval from the data source like database, then the servlet will forward the retrieved data to jsp page for display.

I think when the page loads it does not call the servlet because it does not send a form or something.

How to Fetch Records From Database Using Servlet in Java

Is there a better way or good way that i may be able to display a data from database in my jsp page when i first accessed it. Bear Bibeault. Well then the servlet is never executing, so of course the scoped variable isn't set.

Access the servlet, not the JSP! And please UseCodeTags when posting code to the forums. Thanks for the reply.

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Is there a better way to display data retrieve from a data source into JSP page when the page is first accessed like clicking the link to that specific jsp page. What i want is when i click the link to my jsp page. The page will display information retrieve from the data source automatically. Sorry for not using codes tags. I am new here. Never link to a JSP page.

retrieving data in servlet in java

Always link to the servlet controller for the JSP page. In a properly constructed web application, a JSP will never be directly accessed without first calling its controller. Please read this article for information on properly structuring web applications.

If you are new to JSP, you might also find this article helpful. Thank you for the information.Error: You don't have JavaScript enabled. This tool uses JavaScript and much of it will not work correctly without it enabled. Please turn JavaScript back on and reload this page. Please enter a title. You can not post a blank message. Please type your message and try again.

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This discussion is archived. Hi, Can anybody tell me how to receive the data in servlets which are send through the OutputStream of an another application? Thanks in advance.

Example to retrieve file from Oracle database:

This content has been marked as final. Show 2 replies. Hi, Are you referring to two servlets or a servlet and another application. If it is a servlet and another java application client, then the fact that they run in two different containers needs to be taking into consideration.

Retrieving All Parameters to a Java Servlet

From another java application client to a servlet. The servlet runs on the web container, while the application runs on the application client container. You might want to consider using an EJB in between.

A servlet can access an EJB just like a java application can. So if the data is stored in a data store, i. The servlet or the application client can access the same data. Does this help? Thanks for ur reply. I am using a servlet and a J2ME application. I need to send the image data from the J2ME application to the servlet through the outputStream? Is it possible to retieve the same on servlets? If yes, How? I have tried the ServletInputStream concept out. It created a empty image with the size of 0 KB.

It didn't give any errors. Any idea?Forum: JSP. Retrieving data from a servlet then forward to JSP page. I want to display data to jsp page using the forward method of RequestDispatcher in my servlet. The servlet handles and retrieves data from a textfile then set attributes for the request object.

Mike Zal. I like Can you post some code, because there are quite a few things that can go wrong. I have a feeling that you are directly accessing the JSP page instead of using the Servlet's mapped url. Im following the MVC pattern where my servlet will be the controller and the view will be the jsp page. What i want is when I access the JSP page it will automatically call the servlet where it handles data retrieval from the data source like database, then the servlet will forward the retrieved data to jsp page for display.

I think when the page loads it does not call the servlet because it does not send a form or something.

How to retrieve data from database by using Servlet and Mysql

Is there a better way or good way that i may be able to display a data from database in my jsp page when i first accessed it. Bear Bibeault. Well then the servlet is never executing, so of course the scoped variable isn't set. Access the servlet, not the JSP! And please UseCodeTags when posting code to the forums. Thanks for the reply. Is there a better way to display data retrieve from a data source into JSP page when the page is first accessed like clicking the link to that specific jsp page.

What i want is when i click the link to my jsp page. The page will display information retrieve from the data source automatically.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

The dark mode beta is finally here. Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. I see some problems there. First i think your select method should return a List of users.

So you can implement that as bellow. So that's it. The logic it's that i'm not sure if it will work, may a forget some detail but this is the way to do. Hope that helps. Learn more. Asked 4 years, 8 months ago. Active 4 years, 8 months ago. Viewed 10k times. Asad Asad 59 1 1 gold badge 2 2 silver badges 9 9 bronze badges.

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Related Hot Network Questions. Question feed. Stack Overflow works best with JavaScript enabled.Suppose some data at the Server side has been created and now in order to pass that information in a JSP page, there is a need of request.

This, in fact differentiates the getAttribute and getParameter methods. The latter is used to pass Client side data to a JSP. Implementation 1 First create data at the server side and pass it to a JSP. Here a list of student objects in a servlet will be created and pass it to a JSP using setAttribute. Output Displaying Student Data : stdlist. If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.

See your article appearing on the GeeksforGeeks main page and help other Geeks. Please Improve this article if you find anything incorrect by clicking on the "Improve Article" button below. Writing code in comment? Please use ide. How to add icon logo in title bar using HTML? HttpServletResponse response. Here we are. Tech".

retrieving data in servlet in java

Inspects method of HttpMethod type. Check out this Author's contributed articles. Load Comments. ArrayList; import javax.Here, you will learn that how to fetch result for the given rollno.

I am assuming that there is a table as given below:. We are assuming there are many records in this table. In this example, we are getting the data from the database in servlet and printing it. We are doing all the database logic in servlet for simplicity of the program. But it will be better to separate it from the servlet file. This page gets rollno from the user and forwards this data to servlet which is responsible to show the records based on the given rollno. This is the servlet file which gets the input from the user and maps this data with the database and prints the record for the matched data.

In this page, we are displaying the column name of the database along with data, so we are using ResultSetMetaData interface. To connect java application with the Oracle database ojdbc JavaTpoint offers too many high quality services. Mail us on hr javatpoint. Please mail your requirement at hr javatpoint. Duration: 1 week to 2 week. Servlet Tutorial. War File welcome-file-list Load on startup. Servlet with IDE.

retrieving data in servlet in java

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Javatpoint Services JavaTpoint offers too many high quality services. Example of Fetching Result for the given rollno In this example, we have create three files index.This article explains how to fetch data from a database using a Servlet in Java. This article explains how to fetch data from a database using a servlet in Java.

retrieving data in servlet in java

For fetching data you need to have a table with multiple records. In this application I use a "userlogin" table syntax for creating this table as in the following:. We need to use the following procedure to create the other files. Type your project name as "Welcome" and click on "Finish" as in the following:.

Now delete your default "index. Step 5. Now create a servlet file with the name "Search" and write the following code there. OracleDriver". Check your default web.

How to handle HTML form data with Java Servlet

Now our project is ready to run. Right-click on the "Project" menu then select "Run" as in the following:. Now type the name as you pass in your database file. For example I passed the name "Sandeep" since it exists in my database. Now click on the "Search" button. The data from the database is fetched with the username Sandeep as in the following:.

Now click on the back button of the browser and provide another name. Since I have two records in the database I passed the other one as the name "Rahul". View All. Sandeep Sharma Updated date, Oct 05 Introduction This article explains how to fetch data from a database using a Servlet in Java. Fetch Data from Database This article explains how to fetch data from a database using a servlet in Java.

In this application I use a "userlogin" table syntax for creating this table as in the following: create table userlogin name varchar2password varchar2emailid varchar2country varchar2 ; To insert data the syntax is: insert into userlogin values '', '', '', '' ; For example I inserted two rows using: insert into userlogin values 'Sandeep', 'sandeep', 'sandy ServletException; import javax.

Right-click on the "Project" menu then select "Run" as in the following: Step 8 The following output is generated. Step 9 Now type the name as you pass in your database file. Step 10 Now click on the "Search" button.


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