配置两个@InitBinder以使用相同的模型或实体,但是针对不同的@RequestMappings

Question

我有一个控制器工作正常,它可以注册和更新一个实体,以及如何分别创建表格以分别保存和更新实体

@RequestMapping(value="/registrar.htm", method=RequestMethod.GET)
public String crearRegistrarFormulario(Model model){
   …
}

@RequestMapping(value="/{id}/actualizar.htm", method=RequestMethod.GET)
public String crearActualizarFormulario(@PathVariable("id") String id, Model model){
  …
}

直到这里我没有问题.

我的问题是关于@InitBinder

我需要使用相同的实体Deportista(运动员),一个特殊的设置来保存和更新.例如

@InitBinder
public void registrarInitBinder(WebDataBinder binder) { // register or save
    logger.info(">>>>>>>> registrarInitBinder >>>>>>>>>>>>>");
    …
    CustomDateEditor customDateEditor = new CustomDateEditor(...
    … 
}

@InitBinder
public void actualizarInitBinder(WebDataBinder binder) { // update
    logger.info(">>>>>>>> actualizarInitBinder >>>>>>>>>>>>>");
    …
    CustomDateEditor customDateEditor = new CustomDateEditor(...
    …
    binder.setDisallowedFields(…) //I need this only for update
}

我看过以下内容:

• 如何定义多个initBinder
• 使用initBinder添加多个验证器

这些链接中提到变通不同entities,例如User和Customer通过,它@InitBinder's value的属性,但我需要用相同的实体的工作,我该怎么配置@InitBinder's value指示春季使用或区分每个@InitBinder？一个用于保存和更新.

谢谢

编辑:从Serge Ballesta答案中,以下内容也是强制性的:

@Controller
@RequestMapping(value="/deportista")
@SessionAttributes(value={"deportistaRegistrar", "deportistaActualizar"})
public class DeportistaController {
…

@RequestMapping(value="/registrar.htm", method=RequestMethod.GET)
public String crearRegistrarFormulario(Model model){
    Deportista deportista = new Deportista();
    model.addAttribute("deportistaRegistrar", deportista);
    return "deportista.formulario.registro";
}

@RequestMapping(value="/{id}/actualizar.htm", method=RequestMethod.GET)
public String crearActualizarFormulario(@PathVariable("id") String id, Model model){
    Deportista deportista = this.fakeMultipleRepository.findDeportista(id);
    model.addAttribute("deportistaActualizar", deportista);
    return "deportista.formulario.actualizacion";
}   

它让他的答案工作:

// registrarInitBinder will be used here
@RequestMapping(value="/registrar.htm", method=RequestMethod.POST)
public String doCrearRegistrarFormulario(@ModelAttribute("deportistaRegistrar") XXX value,
    BindingResult result, Model model){
   …
}

// actualizarInitBinder will be used here
@RequestMapping(value="/{id}/actualizar.htm", method=RequestMethod.POST)
public String crearActualizarFormulario(@PathVariable("id") String id,
    @ModelAttribute("deportistaActualizar") XXX value, BindingResult result, Model model){
  …
}

Answer 1

根据javadoc页面@InitBinder,您可以在一个控制器中使用多个init-binder,并使用要应用它们的model属性变量的名称对它们进行特化.示例:

@InitBinder("saveValue")
public void registrarInitBinder(WebDataBinder binder) { // register or save
    logger.info(">>>>>>>> registrarInitBinder >>>>>>>>>>>>>");
    …
    CustomDateEditor customDateEditor = new CustomDateEditor(...
    … 
}

@InitBinder("updateValue")
public void actualizarInitBinder(WebDataBinder binder) { // update
    logger.info(">>>>>>>> actualizarInitBinder >>>>>>>>>>>>>");
    …
    CustomDateEditor customDateEditor = new CustomDateEditor(...
    …
    binder.setDisallowedFields(…) //I need this only for update
}

然后(XXX是将由提交处理的表单对象的类型)

// registrarInitBinder will be used here
@RequestMapping(value="/registrar.htm", method=RequestMethod.POST)
public String doCrearRegistrarFormulario(@ModelAttribute("saveValue") XXX value,
    BindingResult result, Model model){
   …
}

// actualizarInitBinder will be used here
@RequestMapping(value="/{id}/actualizar.htm", method=RequestMethod.POST)
public String crearActualizarFormulario(@PathVariable("id") String id,
    @ModelAttribute("updateValue") XXX value, BindingResult result, Model model){
  …
}