java ee - Context root not coming while submitting Spring form - issues with url pattern -

below contoller , web xml , jsp page uses spring form.

controller

@controller @requestmapping(value = {"/*", "/login"}) public class helloworldcontroller {      @requestmapping(method = requestmethod.get)     public string helloworld(final model model) {         model.addattribute("bodypage", "body.jsp");         user user = new user();         address address = new address();          user.setaddress(address);          model.addattribute("myuser", user);         system.out.println("hello world");         return "login";     }       @requestmapping(value = "/submitdetails", method = requestmethod.post)     public modelandview submitdetais(final object command) {          system.out.println("inside submitdetais ");         user user = (user) command;         return new modelandview("result", "user", user);     } } 

web xml

<servlet>         <servlet-name>dispatcher</servlet-name>         <servlet-class>org.springframework.web.servlet.dispatcherservlet</servlet-class>         <load-on-startup>1</load-on-startup>     </servlet>     <servlet-mapping>         <servlet-name>dispatcher</servlet-name>         <url-pattern>/*</url-pattern>     </servlet-mapping> 

jsp page

<form:form commandname="myuser" modelattribute="myuser" method="post" action="submitdetails.htm" >     <table>         <tr>             <td>first name:</td>             <td><form:input path="firstname" /></td>         </tr>         <tr>             <td>last name:</td>             <td><form:input path="lastname" /></td>         </tr>          <tr>             <td>address 1:</td>             <td><form:input path="address.address1"  /></td>         </tr>          <tr>             <td>address 2:</td>             <td><form:input path="address.address2"  /></td>         </tr>          <tr>             <td colspan="2"><input type="submit" value="save changes" /></td>         </tr>     </table> </form:form> 

dispathcher servlet has view resolver. per class level url pattern defined in contoller if navigate below url http://localhost:9080/examplespring or http://localhost:9080/examplespring/

controll going jsp page , asking details. after entering details if submit form form action action="submitdetails.htm" mentioned in action , throwing 404 error. , url in address bar coming localhost:9080/submitdetails.htm missing context root project. question doing wrong in requehst mapping url section ?

as per understanding

1.the form submitted using post mathes pattern 2. /submitdetails.htm matching pattern /* in class level url pattern mapping request should enter controller, 3. , lastly method level mapping in controller's method having same url pattern amd request method action amd methood in jsp should enter controllers method , print in console--- not happeing.

could please me understand this?

your problem solved after changing /* / because, every url contains 2 parts

1)servlet path

2)path info

consider following code

<servlet-mapping>     <servlet-name>exactmatchservlet</servlet-name>     <url-pattern>/abc</url-pattern>   </servlet-mapping>   <servlet-mapping>     <servlet-name>pathinfoservlet</servlet-name>     <url-pattern>/*</url-pattern>   </servlet-mapping>   <servlet-mapping>     <servlet-name>longpathinfoservlet</servlet-name>     <url-pattern>/abc/*</url-pattern>   </servlet-mapping> </servlet-mapping> 

here if call url like

/abc call exactmatchservlet

servlet path -> /abc

path info -> null

/abc/pqr call pathinfoservlet

servlet path -> /abc

path info -> /pqr

/something/random call pathinfoservlet

servlet path -> null

path info -> /something/random

when replacing <url-pattern>/*</url-pattern>

<url-pattern>/</url-pattern> 

and call /something/random then

servlet path -> /something/random

path info -> null

so changing /* / change mapping of url parts(servlet path , path info)

for region container can't find servlet url , give 404 error.