java Spring portlet mvc：@Valid 似乎不起作用

Spring portlet mvc: @Valid does not seem to work

提问by Hyman

I created a bean class and use it in my controller but it does not seem to work. Namely even though I enter an invalid age, result.hasErrorsis still false.

我创建了一个 bean 类并在我的控制器中使用它，但它似乎不起作用。即即使我输入了一个无效的年龄，result.hasErrors仍然是假的。

Bean class:

豆类：

public class User{
    @Min(13)
    private int age;
    private String name;

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

    public String getName(){
            return name;
    }

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

Controller snippet:

控制器片段：

@ActionMapping(params = "myAction=validateUser")
    public void validateUser(ActionRequest request, ActionResponse response, ModelMap model, @ModelAttribute("user") @Valid User user, BindingResult result ){      

        if(result.hasErrors()){
            for(ObjectError oe : result.getAllErrors()){
                System.out.println(oe.getDefaultMessage());
            }
        } else{
            //code
        }
    }

JSP:

JSP：

<form:form action="${registerUser}" method="post" commandName="user">
    <b>User</b> 
    <form:input path="age"/>
    <form:input path="name"/>
    <input type="submit" value="register"/>
</form:form>

---

---

edit: My userRegistration-portlet.xml:

编辑：我的 userRegistration-portlet.xml：

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:util="http://www.springframework.org/schema/util"
    xmlns:mvc="http://www.springframework.org/schema/mvc"
    xsi:schemaLocation="
        http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context-3.0.xsd
        http://www.springframework.org/schema/util
        http://www.springframework.org/schema/util/spring-util-3.0.xsd
        http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
        http://www.springframework.org/schema/mvc
        ">

    <mvc:annotation-driven /> 

    <import resource="spring-hibernate.xml"/>

    <context:component-scan base-package="comjohndoe.dao" />
    <context:component-scan base-package="comjohndoe.model" />
    <context:component-scan base-package="comjohndoe.service" />
    <context:component-scan base-package="comjohndoe.util" />
    <context:component-scan base-package="comjohndoecontroller" />

    <bean class="org.springframework.web.portlet.mvc.annotation.AnnotationMethodHandlerAdapter"/>

    <bean id="viewResolver"
        class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="viewClass"
            value="org.springframework.web.servlet.view.JstlView" />
        <property name="prefix" value="/jsp/" />
        <property name="suffix" value=".jsp" />
    </bean>
</beans>

It's the mvc:spring-validation line that is giving me the: cvc-complex-type.2.4.c the matching wildcard is strict, but no declaration can be found for the element mvc:annotation-driven.error.

这是给我的 mvc:spring-validation 行：cvc-complex-type.2.4.c the matching wildcard is strict, but no declaration can be found for the element mvc:annotation-driven.错误。

采纳答案by Bozho

You need <mvc:annotation-driven />to enable jsr-303 validation. If you don't want to use it for some reason, or if at some point it starts creating problems (like it did for me), take a look at this question

您需要<mvc:annotation-driven />启用 jsr-303 验证。如果您出于某种原因不想使用它，或者在某个时候它开始产生问题（就像对我一样），请查看此问题

Update: in schemaLocationthe mvc entry should contain these two:

更新：在schemaLocationmvc 条目中应包含以下两个：

http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd

回答by heikkim

I had exactly the same problem. I read https://jira.springframework.org/browse/SPR-6817and worked the problem around by adding to my config:

我遇到了完全相同的问题。我阅读了https://jira.springframework.org/browse/SPR-6817并通过添加到我的配置解决了这个问题：

<mvc:annotation-driven validator="validator" />

<bean id="validator" class="org.springframework.validation.beanvalidation.LocalValidatorFactoryBean" />

<bean id="annotationMethodHandlerAdapter" class="org.springframework.web.portlet.mvc.annotation.AnnotationMethodHandlerAdapter">
    <property name="webBindingInitializer">
        <bean id="configurableWebBindingInitializer" class="org.springframework.web.bind.support.ConfigurableWebBindingInitializer">
            <property name="validator">
                <ref bean="validator"/>
            </property>
        </bean>
    </property>
</bean>

You also need to have a JSR-303 validator in your project in order for it to be availableFor this I used Hibernate Validator: http://www.hibernate.org/subprojects/validator.html

您还需要在您的项目中有一个 JSR-303 验证器才能使用它为此我使用了 Hibernate Validator：http: //www.hibernate.org/subprojects/validator.html

回答by Andy

You need to do the following, that is how I solved in the spring portlet mvc project.

需要做如下操作，我在spring portlet mvc项目中就是这样解决的。

1. Add mvc:annotation-drivento your applicatonContext.xml

2. Add the following code in your controller:

   @Autowired private LocalValidatorFactoryBean validator;

   @InitBinder public void initBinder(WebDataBinder binder) { binder.setValidator(validator); }

1. 添加mvc:annotation-driven到您的 applicationContext.xml

2. 在控制器中添加以下代码：

   @Autowired private LocalValidatorFactoryBean validator;

   @InitBinder public void initBinder(WebDataBinder binder) { binder.setValidator(validator); }

回答by dira

I think the reason is that ServletRequestDataBinder(extends DataBinder) has no org.springframework.validation.Validatorinstance, so it does not validate anything (to validate @Valid annotated bean you must have javax.validation.Validator instance).

我认为原因是ServletRequestDataBinder（扩展 DataBinder）没有org.springframework.validation.Validator实例，所以它不验证任何东西（要验证 @Valid 注释的 bean，你必须有 javax.validation.Validator 实例）。

org.springframework.validation.DataBinder

org.springframework.validation.DataBinder

    public void validate() {
            Validator validator = getValidator();
            if (validator != null) {
                validator.validate(getTarget(), getBindingResult());
            }
        }

You can set the Validator instance in @InitBinderannotated methods:-

您可以在带@InitBinder注释的方法中设置 Validator 实例：-

@InitBinder
    public void initBinder(WebDataBinder binder) {
        binder.setValidator(new MyValidator());
    }

Yo can also set the validator instance in WebBindingInitializer.

您还可以在WebBindingInitializer 中设置验证器实例。

StandardBindingInitializer

标准绑定初始化器

   public class StandardBindingInitializer implements WebBindingInitializer {
        @Autowired
        private LocalValidatorFactoryBean validator;
        public void setValidatorFactory(LocalValidatorFactoryBean validator) {
            this.validator = validator;
        }

        @Override
        public void initBinder(WebDataBinder binder, WebRequest request) {
            binder.setValidator(validator);
    }
}

To create an instance of LocalValidatorFactoryBean either use mvc:annotation-drivenOR set up LocalValidatorFactoryBean as bean.

要创建 LocalValidatorFactoryBean 的实例，请使用mvc:annotation-driven或将 LocalValidatorFactoryBean 设置为 bean。