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Here are some simple steps that can help you solve the problem of sending jsp to the servlet.
g. g.
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Create a concrete class that extends HttpServlet and add the @WebServlet annotation to get the desired URL that the servlet will use for will.class lists
@webservlet ("/ yourservleturl")public YourServlet extends HttpServlet
And just include
Create a doPost () component in your servlet that requests entries, represented as values, of a BOM with the name key of an input field (not id !). You can use request.getParameter () to send from unambiguous relevance fields and request.To getparametervalues () to get values represented from multiple field values. ... Empty
@overrideprotected doPost (HttpServletRequest, HttpServletResponse response) throws ServletException, IOException Specify string = query. getparameter ("name"); Chain pass = request. getparameter ("go through"); String gender = request.getParameter ("gender"); boolean = convention request.getParameter ("agree")! corresponds to zero; Role string [] = request.getParameterValues ("role"); String countryCode = request.getParameter ("countryCode"); String AnimalIds [] = request.getParameterValues ("animalId"); String message Request = .getParameter ("message"); boolean "submitButtonPressed" means request.getParameter ("submit")! = zero;// ...
Perform validation if necessary and finally leave the DB inside in the usual JDBC / DAO fashion.
user = abuser of new users (name, passport, roles);userDAO.save (user);
See Also:
- HTML and hobbyist's guide
- Our Servlet Wiki
- doGet in addition to doPost in servlets
- How do I call a specific Java trusted method when I click / submit a specific button in the JSP?
- How do I validate and display error messages in the same form in a JSP?
- How can I save the values of the JSP-related HTML form fields after the form is submitted to the servlet?
- How to upload files to server using JSP / Servlet?
- Show JDBC result set in HTML, and JSP page with MVC and DAO templates.
- Servlet returns "HTTP status 404. The requested resource (/ servlet) is not necessarily available"
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answered Feb 11 at 5:08 pm.
1.0m
Well, there are tons of online database tutorials out there (the Java you're looking for is in the JDBC category). However, if you continue to use simple servlets, develop a class that extends HttpServlet , but inside you have two methods that look like this:
publicly avoid doPost (HttpServletRequest req, HttpServletResponse or)
public void doGet (HttpServletRequest req, HttpServletResponse or)
One of them is usually for processing GET operations, and another important one is for processing POST operations. Then you use each HttpServletRequest to get the specifications submitted as part of a form like this:
String name matches req.getParameter ("name");
Once you have the computer data for a form, it's fairly easy to add it to the options database, a JDBC tutorial that can be widely available on the web. I also suggest looking for their Basic Java Tutorial Servlet to help you get started. It is very easy to use, although some steps need to be adjusted correctly.
answered Feb 11 at 17:11
33.8k
First you exit the jsp file:and write any textbox you want
for example:
open rate testprotected void doGet (options! options)Stringname = request.getparameter ("name");
answered Feb 4, 2016 at 9:43 am
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You add the query string to the url when you get most of the query dispatcher by adding "?" Syntax by name = value pairs. For the situation: RequestDispatcher rd = sc.You will undoubtedly use the setAttribute () method of the HTTP request object. For example: request.
Create a doPost () method in the personal servlet that captures the recommendation values, presented as query parameters, that were entered because of the input field name (not the username!). You can useb request. getParameter (), which will get the value passed from unambiguous fields and queries. getParameterValues () to get represented values from multi-value fields.
If the JSPC (compiler) converts the code directly to servlet code and calls the JAVAC compiler to convert the file. Academic report.
