Update form in jsp

Active Oldest Votes. ModelAttribute automatically retrieves the submitted data and fills a Person object with it With the form you have the name field will always be empty, though.

Bewusstsein Bewusstsein 1, 11 11 silver badges 19 19 bronze badges. The problem is that I don't want person to be allowed to change his name. I need only one field to be displayed. Of course I can hide it using style property display: none , but I don't think it is the best solution. Then you need another object, say PersonChangeRequest or AgeChangeRequest , that only has an age field, to be in your model; you receive that object, validate it and finally update the underlying Person with the new value.

The way it's currently set up an attacker could add a name to the POST-Request and the Person 's name would be changed. Not having an input field for name doesnt prevent that. I think this is the only solution. If you post it, I'll mark it as correct — a Sign up or log in Sign up using Google. Sign up using Facebook. Using the above jar files to establish a MySQL connection.

Open your localhost server PHPMyAdmin when opening; choose database option and type "demo" for the database name. Simple HTML form created with table and using its attribute, the name and owner of the fields I took here. The vaidate function of JavaScript assigns to the onsubmit method, and that method trigger event comes in the submission form.

By following the JSP code record will be inserted into the database with an appropriate message after the insert query executed. The editing form is like an insert form.

We have to retrieve particular records from a database while editing a record. Fire update query, if a record is selected to edit then delete old records and insert new records. All records are retrieved by JSP expression and embedded within a table. Well, it is easy to set up records in table format using simple CSS codes below. After delete query execute the data will be deleted from the database. Thank you. The GET method is the default method to pass information from the browser to the web server and it produces a long string that appears in your browser's Location:box.

It is recommended that the GET method is better not used. This method packages the information in exactly the same way as the GET method, but instead of sending it as a text string after a? This message comes to the backend program in the form of the standard input which you can parse and use for your processing. JSP handles this type of requests using getParameter method to read simple parameters and getInputStream method to read binary data stream coming from the client.

Below is the main. We are going to use the same JSP main. Infact there is no change in the above JSP because the only way of passing parameters is changed and no binary data is being passed to the JSP program.

File handling related concepts will be explained in separate chapter where we need to read the binary data stream.