groovy - Grails - 404 File not found - but why? -

i start write simple login formular. code view:

 <g:form controller="login" action="checkusernameandpassword">         <input type = "text"name="usernamefield" value="username"/>         <input type = "password"name="passwordfield" value="password"/>         <input type = "submit" name="loginbutton" value="login"/>   </g:form> 

this code controller:

class logincontroller {  def index = {      render(view: "login") }//endmethod index  def checkusernameandpassword = {      [username = params.username ,password = params.password];  }//endmethod checkusernameandpassword 

}

as can see, doesnt yet, wanted print values on screen, 404 message (i run file on local host)

the requested resource (/projectname/hello/checkusernameandpassword) not available. 

i cant figure out why. great if of guys have tip me.

beste regards, daniel

edit (change 1):

    def checkusernameandpassword = {      render(view: "login",model: [username: params.username ,password: params.password])  }//endmethod checkusernameandpassword 

}

(change 2) //added line in view

<div>username: ${username} passwort: ${password}</div> 

<g:form controller="hello" action="checkusernameandpassword"> 

means have hellocontroller checkusernameandpassword action

but in code sample have logincontroller form work, must write:

 <g:form controller="login" action="checkusernameandpassword">         <input type = "text" name="usernamefield" value="username"/>         <input type = "password" name="passwordfield" value="password"/>         <input type = "submit" name="loginbutton" value="login"/>   </g:form> 

p.s. in grails world better use gsp tags instead of plain html because generate proper(in 99.99% of cases) html code you. best way implement form is:

 <g:form controller="login" action="checkusernameandpassword">        <g:textfield name="usernamefield" value="username" />         <g:passwordfield name="passwordfield" value="password" />         <g:submitbutton name="loginbutton" value="login" />  </g:form> 

p.s.2 proper logincontroller code(for form described before)

class logincontroller {  def index = {      render(view: "login") }//endmethod index  def checkusernameandpassword = {      [username: params.usernamefield ,password: params.passwordfield];  }//endmethod checkusernameandpassword