Multiple submit buttons in the same form calling different Servlets

Question

First  here is the code    lt form action  FirstServlet  method  Post  gt      Last Name   lt input type  text  name  lastName  size  20  gt       lt br gt  lt br gt       lt input type  submit  value  FirstServlet  gt       lt input type  submit value  SecondServlet  gt   lt  form gt    I d like to understand how to send information in case the FirstServlet button was pressed to FirstServlet and in case the SecondServlet button was pressed to SecondServlet   important  I want to do it in the same form so the same information would be transered to both the servlets   of course  in the servlets I ll use the info accordingly

User · Answer

You may need to write a javascript for each button submit  Instead of defining action in form definition  set those values in javascript  Something like below    function callButton1 form  yourServ    form action   yourServ  form submit

User · Answer

In addition to the previous response  the best option to submit a form with different buttons without language problems is actually using a button tag    lt form gt               lt button type  submit  name  submit  value  servlet1  gt Go to 1st Servlet lt  button gt       lt button type  submit  name  submit  value  servlet2  gt Go to 2nd Servlet lt  button gt   lt  form gt

User · Answer

If you use jQuery   u can do it like this    lt form action  example  method  post  id  loginform  gt           lt input id  btnin  type  button  value  login   gt     lt input id  btnreg  type  button  value  regist   gt   lt  form gt    And js will be       btnin   click function           loginform   attr  action    user login           loginform   submit          btnreg   click function           loginform   attr  action    user regist           loginform   submit

User · Answer

If you use spring this a better way   Is there any way to create form with multiple submit buttons on Spring MVC using annotations

User · Answer

There are several ways to achieve this   Probably the easiest would be to use JavaScript to change the form s action    lt input type  submit  value  SecondServlet  onclick  form action  SecondServlet    gt    But this of course won t work when the enduser has JS disabled  mobile browsers  screenreaders  etc      Another way is to put the second button in a different form  which may or may not be what you need  depending on the concrete functional requirement  which is not clear from the question at all    lt form action  FirstServlet  method  Post  gt      Last Name   lt input type  text  name  lastName  size  20  gt       lt br gt  lt br gt       lt input type  submit  value  FirstServlet  gt   lt  form gt   lt form action  SecondServlet  method  Post  gt       lt input type  submit value  SecondServlet  gt   lt  form gt    Note that a form would on submit only send the input data contained in the very same form  not in the other form     Again another way is to just create another single entry point servlet which delegates further to the right servlets  or preferably  the right business actions  depending on the button pressed  which is by itself available as a request parameter by its name     lt form action  MainServlet  method  Post  gt      Last Name   lt input type  text  name  lastName  size  20  gt       lt br gt  lt br gt       lt input type  submit  name  action  value  FirstServlet  gt       lt input type  submit  name  action  value  SecondServlet  gt   lt  form gt    with the following in MainServlet  String action   request getParameter  action     if   FirstServlet  equals action            Invoke FirstServlet s job here    else if   SecondServlet  equals action            Invoke SecondServlet s job here      This is only not very i18n maintenance friendly  What if you need to show buttons in a different language or change the button values while forgetting to take the servlet code into account     A slight change is to give the buttons its own fixed and unique name  so that its presence as request parameter could be checked instead of its value which would be sensitive to i18n maintenance    lt form action  MainServlet  method  Post  gt      Last Name   lt input type  text  name  lastName  size  20  gt       lt br gt  lt br gt       lt input type  submit  name  first  value  FirstServlet  gt       lt input type  submit  name  second  value  SecondServlet  gt   lt  form gt    with the following in MainServlet  if  request getParameter  first      null           Invoke FirstServlet s job here    else if  request getParameter  second      null           Invoke SecondServlet s job here        Last way would be to just use a MVC framework like JSF so that you can directly bind javabean methods to buttons  but that would require drastic changes to your existing code    lt h form gt      Last Name   lt h inputText value    bean lastName   size  20    gt       lt br  gt  lt br  gt       lt h commandButton value  First  action    bean first     gt       lt h commandButton value  Second  action    bean Second     gt   lt  h form gt    with just the following javabean instead of a servlet   ManagedBean  RequestScoped public class Bean        private String lastName      getter setter      public void first                Invoke original FirstServlet s job here             public void second                Invoke original SecondServlet s job here

User · Answer

function gotofirst            window location    firstServelet java         function gotosecond            window location    secondServelet java        lt form action  FirstServlet  method  Post  gt      Last Name   lt input type  text  name  lastName  size  20  gt       lt br gt  lt br gt       lt input type  submit  onclick  gotofirst    value  FirstServlet  gt       lt input type  submit  onclick  gotosecond    value  SecondServlet  gt   lt  form gt

[java] Multiple submit buttons in the same form calling different Servlets

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