Fehler fehlt Parameter in Anrufdefinition: String

Question

Ich bin neu mit Play 2.0. Ich habe ein Anmeldeformular erstellt und versuche nun ein Suchformular zu erstellen. Aber ich wurde von diesem error: " Missing parameter in call definition: String In /home/thangnk/Task/conf/routes at line 17. " gefangen.

Hier ist mein Code:

CONTROLLER --- Search.java

package controllers; 

import java.util.ArrayList; 
import java.util.List; 

import models.Task; 
import play.*; 
import play.data.Form; 
import play.db.ebean.Model.Finder; 
import play.mvc.*; 

import views.html.*; 

public class Search extends Controller{ 
    static Form<Task> myform = form(Task.class); 
    public static Result search(){ 
     return ok(search.render()); 
    } 
    public static Result searchByusername(String username){ 
     Form<Task> filledForm = myform.bindFromRequest(); 
     username=filledForm.get().username; 
     return ok(result_search.render(username)); 
    } 
} 

MODELS --- Task.java

package models; 

import java.util.*; 

import javax.persistence.Entity; 
import javax.persistence.Id; 

import play.data.validation.Constraints.Email; 
import play.data.validation.Constraints.MaxLength; 
import play.data.validation.Constraints.MinLength; 
import play.data.validation.Constraints.Required; 
import play.db.ebean.Model; 
import play.db.ebean.Model.Finder; 

@Entity 
public class Task extends Model { 
    @Id 
    public static Long id; 

    // @Required 
    // @MinLength(6) 
    // @MaxLength(12) 
    public String password; 

    @Email 
    public String email; 

    // @MinLength(6) 
    public String username; 

    public Task() { 
    } 

    public Task(Long id, String username, String email, String password) { 
     this.email = email; 
     this.username = username; 
     this.id = id; 
     this.password = password; 
    } 

    public static Finder<Long, Task> find = new Finder(Long.class, Task.class); 

    public static List<Task> all() { 
     return find.all(); 
    } 

    public static void create(Task task) { 
     task.save(); 
    } 

    public static void delete(Long id) { 
     find.ref(id).delete(); 
    } 

    public static List<Task> searchByusername(String name) { 
     return find.where().like("username", "%" + name + "%").findList(); 
    } 
} 

WEGE

GET /       controllers.Application.index() 
GET  /tasks   controllers.Application.tasks() 
POST /tasks   controllers.Application.newTask() 
POST /tasks/:id/delete   controllers.Application.deleteTask(id:Long) 

# POST /showuser  controllers.Application.showUser() 

# Search 
GET /search    controllers.Search.search() 
POST /result_search/:String  controllers.Search.searchByusername(username:String) 
-------// This error mark at line "username : String" ---------------------------------- 
# Map static resources from the /public folder to the /assets URL path 
GET  /assets/*file    controllers.Assets.at(path="/public", file) 

TERMINAL ----

[error] {file:/home/thangnk/Task/}Task/compile:sources: in /home/thangnk/Task/conf/routes - PlayException: Compilation error [Missing parameter in call definition: String] 
[error] application - 

! Internal server error, for request [GET /search] -> 

sbt.PlayExceptions$RoutesCompilationException: Compilation error [Missing parameter in call definition: String] 
    at sbt.PlayCommands$$anonfun$52.apply(PlayCommands.scala:433) ~[na:na] 
    at sbt.PlayCommands$$anonfun$52.apply(PlayCommands.scala:423) ~[na:na] 
    at sbt.Scoped$$anonfun$hf3$1.apply(Structure.scala:474) ~[na:na] 
    at sbt.Scoped$$anonfun$hf3$1.apply(Structure.scala:474) ~[na:na] 
    at scala.Function1$$anonfun$compose$1.apply(Function1.scala:41) ~[scala-library.jar:0.11.3] 
    at sbt.Scoped$Reduced$$anonfun$combine$1$$anonfun$apply$11.apply(Structure.scala:295) ~[na:na] 

Hoffnung u Jungs mir helfen, es gelöst und mir helfen, dieses Formular auszufüllen.

Answer 1

Es in Ihre Routen-Datei ist, invertiert Sie den Parameternamen und Typ:

POST /result_search/:username  controllers.Search.searchByusername(username:String)