Lista <Foo> como objeto de forma de respaldo utilizando muel 3 mvc, sintaxis correcta?

Question

que quiero hacer algo como esto, donde foo es una clase con el nombre de campo de un String, y el captador/definidor:

<form:form id="frmFoo" modelAttribute="foos"> 
    <c:forEach items="${foos}" var="foo"> 
    <form:input path="${foo.name}" type="text"/> 

y luego enviar la lista completa de Foos con los nombres actualizados? Mi sig controlador se ve así:

@RequestMapping(value = "/FOO", method = RequestMethod.POST) 
public String getSendEmail(List<Foo> foos, Model model) 
{} 

Answer 1

Tal vez esta pregunta answersyour:

CONTROLADOR:

@Controller("/") 
public class FooController{ 

    //returns the ModelAttribute fooListWrapper with the view fooForm 
    @RequestMapping(value = "/FOO", method = RequestMethod.GET) 
    public String getFooForm(Model model) { 
     FooListWrapper fooListWrapper = new FooListWrapper(); 
     fooListWrapper.add(new Foo()); 
     fooListWrapper.add(new Foo()); 

     //add as many FOO you need 

     model.addAttribute("fooListWrapper", fooListWrapper); 

     return "fooForm"; 
    } 

    @RequestMapping(value = "/FOO", method = RequestMethod.POST) 
    public String postFooList(@ModelAttribute("fooListWrapper")FooListWrapper fooListWrapper, Model model) { 

     //........... 
    } 

} 

FOO LISTA DE ENVOLTURA:

public class FooListWrapper { 
    private List<Foo> fooList; 

    public FooListWrapper() { 
     this.fooList = new ArrayList<Foo>(); 
    } 

    public List<Foo> getFooList() { 
     return fooList; 
    } 

    public void setFooList(List<Foo> fooList) { 
     this.fooList = fooList; 
    } 

    public void add(Foo foo) { 
     this.fooList.add(foo); 
    } 
} 

clase Foo:

public class Foo { 
    private String name; 

    public Foo() { 
    } 

    public String getName() { 
     return name; 
    } 

    public void setName(String name) { 
     this.name = name; 
    } 
} 

VISTA JSP (nombre = fooForm):

<c:url var="fooUrl" value="/FOO"/> 
<form:form id="frmFoo" action="${fooUrl}" method="POST" modelAttribute="fooListWrapper"> 


    <c:forEach items="${fooListWrapper.fooList}" varStatus="i"> 
      <form:input path="fooList[${i.index}].name" type="text"/> 
    </c:forEach> 


    <button>submit</button> 
</form:form> 

Answer 2

Aunque las obras respuesta anterior, aquí es una alternativa que no requiere que usted para crear una clase contenedora/form clase.

modelo y el controlador

public class Foo { 
    private String name; 
    private List<Foo> fooList; //**must create this list, also getter and setter** 
    public Foo() { 
    } 

    public String getName() { 
     return name; 
    } 

    public void setName(String name) { 
     this.name = name; 
    } 
    public List getFooList() { 
     return fooList; 
    } 

    public void setFooList(String fooList) { 
     this.fooList = fooList; 
    } 

} 

@Controller("/") 
public class FooController{ 

    //returns the ModelAttribute fooListWrapper with the view fooForm 
    @RequestMapping(value = "/FOO", method = RequestMethod.GET) 
    public String getFooList(Model model) { 
     List<Foo> fooList = service.getFooList(); 

     model.addAttribute("fooList", fooList); 

     return "list_foo"; //name of the view 
    } 

    @RequestMapping(value = "/FOO", method = RequestMethod.POST) 
    public String postFooList(@ModelAttribute("foo")Foo foo, Model model) { 
     List<Foo> list = foo.getFooList(); // **This is your desired object. 
     //If you debug this code, you can easily find this is the list of 
     //all the foo objects that you wanted, provided you pass them properly. 
     //Check the jsp file to see one of the ways of passing such a list of objects** 
     //Rest of the code 
    } 

} 

JSP Ver

<form:form id="form" action="<paste-target-url-here>" method="POST" modelAttribute="fooList"> 


    <c:forEach items="${fooList}" varStatus="i"> 
      <form:input path="fooList[${i.index}].name" type="text"/> 
      <!-- Here you are setting the data in the appropriate index which will be caught in the controller --> 
    </c:forEach> 


    <button>submit</button> 
</form:form>