Spring MVC和JSR-303 hibernate条件验证 [英] Spring MVC and JSR-303 hibernate conditional validation

问题描述

我有一个我要验证的表单。它包含2个地址变量。 address1必须经过验证，address2必须根据某些条件进行验证

I've a form I want to validate. It contains 2 Address variables. address1 has always to be validated, address2 has to be validated based on some conditions

public class MyForm {
    String name;
    @Valid Address address1;
    Address address2;
 }

public class Address {
    @NotEmpty   
    private String street;
}

我的控制器会自动验证并绑定我的表单obj

my controller automatically validates and binds my form obj

@RequestMapping(...)
public ModelAndView edit(
        @ModelAttribute("form")
        @Valid
        MyForm form,
        BindingResult bindingResult,
        ...)

        if(someCondition) {
            VALIDATE form.address2 USING JSR 303

问题是如果我使用LocalValidatorFactoryBean验证器，我就无法重用Spring提供的BinidingResult对象。绑定不起作用，因为'result'的目标对象是'MyForm'而不是'Address'

the problem is that if I use the LocalValidatorFactoryBean validator i can't reuse the BinidingResult object provided by Spring. The bind won't work as the target object of 'result' is 'MyForm' and not 'Address'

validate(form.getAddress2(), bindingResult)   //won't work

我想知道什么是标准/干净的方法来进行条件验证。

I'm wondering what's the standard/clean approach to do conditional validation.

我正在考虑以编程方式在我的控制器中创建一个新的BindingResult。

I was thinking in programmatically create a new BindingResult in my controller.

final BindingResult bindingResultAddress2 = new BeanPropertyBindingResult(address2, "form");
validate(form.getAddress2(), bindingResultAddress2);

但是我从bindingResultAddress2获得的错误列表无法添加到一般的'bindingResult'中因为字段名称不正确（'street'而不是'address2.street'）并且绑定不起作用。

but then the List of errors I obtain from bindingResultAddress2 can't be added to the general 'bindingResult' as the field names are not correct ('street' instead of 'address2.street') and the binding won't work.

一些脏方法是扩展BeanPropertyBindingResult接受一些字符串附加到字段名称..你有更好的方法吗？

Some dirty approach would be to extend BeanPropertyBindingResult to accept some string to append to the fields name.. do you have a better approach?

推荐答案

验证分层的标准方法结构是使用 pushNestedPath（） / popNestedPath（），虽然我不确定它如何与JSR-一起使用303：

The standard approach for validating hierarchical structures is to use pushNestedPath()/popNestedPath(), though I'm not sure how it plays with JSR-303:

bindingResult.pushNestedPath("address2");
validate(form.getAddress2(), bindingResult);
bindingResult.popNestedPath();

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