使用Spring 3.2.0进行验证(Validation with Spring 3.2.0)

我正在使用HibernateValidator 4.3.1 。在整个应用程序中按预期执行验证。

我已经注册了一些自定义编辑器来执行全局验证，例如确保文本字段中的数值（ double ， int等），以确保有关Joda-Time API等的有效日期。

在这种类型的验证中，我通过将allowEmpty参数设置为false来允许null / empty值，以单独验证它，尤其是当这些字段留空时显示单独的用户友好错误消息。

因此，除了使用HibernateValidator和自定义编辑器进行验证之外，我还尝试使用以下验证策略。同样，这种验证仅针对那些为自定义编辑器注册的字段留空。

以下是实现org.springframework.validation.Validator接口的类。

package test; import org.springframework.stereotype.Component; import org.springframework.validation.Errors; import org.springframework.validation.ValidationUtils; import org.springframework.validation.Validator; import validatorbeans.TempBean; @Component public final class TempValidator implements Validator { @Override public boolean supports(Class<?> clazz) { System.out.println("supports() invoked."); return TempBean.class.isAssignableFrom(clazz); } @Override public void validate(Object target, Errors errors) { TempBean tempBean = (TempBean) target; System.out.println("startDate = " + tempBean.getStartDate() + " validate() invoked."); System.out.println("doubleValue = " + tempBean.getDoubleValue() + " validate() invoked."); System.out.println("stringValue = " + tempBean.getStringValue() + " validate() invoked."); ValidationUtils.rejectIfEmptyOrWhitespace(errors, "startDate", "java.util.date.nullOrEmpty.error"); ValidationUtils.rejectIfEmptyOrWhitespace(errors, "doubleValue", "java.lang.double.nullOrEmpty.error"); } }

该类使用@Component注释指定，以便可以自动连接到特定的Spring控制器类。调试语句完全基于用户提供的输入显示。

以下是控制器类。

package controller; import customizeValidation.CustomizeValidation; import java.util.Map; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import javax.validation.Valid; import javax.validation.groups.Default; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; import org.springframework.validation.BindingResult; import org.springframework.validation.DataBinder; import org.springframework.web.bind.annotation.ModelAttribute; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import test.TempValidator; import validatorbeans.TempBean; @Controller public final class TempController { @Autowired private TempService tempService; private TempValidator tempValidator; public TempValidator getTempValidator() { return tempValidator; } @Autowired public void setTempValidator(TempValidator tempValidator) { this.tempValidator = tempValidator; } @RequestMapping(method = {RequestMethod.GET}, value = {"admin_side/Temp"}) public String showForm(@ModelAttribute("tempBean") @Valid TempBean tempBean, BindingResult error, Map model, HttpServletRequest request, HttpServletResponse response) { return "admin_side/Temp"; } @RequestMapping(method = {RequestMethod.POST}, value = {"admin_side/Temp"}) public String onSubmit(@ModelAttribute("tempBean") @Valid TempBean tempBean, BindingResult errors, Map model, HttpServletRequest request, HttpServletResponse response) { //tempValidator.supports(TempBean.class); //tempValidator.validate(tempBean, errors); DataBinder dataBinder = new DataBinder(tempBean); dataBinder.setValidator(tempValidator); dataBinder.validate(); //errors=dataBinder.getBindingResult(); if (CustomizeValidation.isValid(errors, tempBean, TempBean.ValidationGroup.class, Default.class) && !errors.hasErrors()) { System.out.println("Validated"); } return "admin_side/Temp"; } }

我正在调用Spring控制器类本身的验证器（我确实想要）

DataBinder dataBinder = new DataBinder(tempBean); dataBinder.setValidator(tempValidator); dataBinder.validate();

调用验证器但不执行预期的验证。

如果我只使用以下语句手动调用验证器（上面已注释掉），

tempValidator.validate(tempBean, errors);

然后进行验证。所以我不相信我的验证器正常工作。为什么它无法使用DataBinder ？

在我的application-context.xml文件中，这个bean只是按如下方式配置。

下面这么多包，包括TempValidator类所包含的test包，都是自动检测的。

<context:component-scan base-package="controller spring.databinder validatorbeans validatorcommands test" use-default-filters="false"> <context:include-filter expression="org.springframework.stereotype.Controller" type="annotation"/> <context:include-filter expression="org.springframework.web.bind.annotation.ControllerAdvice" type="annotation"/> </context:component-scan>

我甚至试图放

在我的dispatcher-servlet.xml文件中。

我在这里俯瞰什么？

I'm using HibernateValidator 4.3.1. Validations are performed as intended throughout the entire application.

I have registered some custom editors to perform validation globally such as for ensuring numeric values (double, int etc) in a text-field, for ensuring valid dates regarding the Joda-Time API etc.

In this type of validation, I'm allowing null/empty values by setting the allowEmpty parameter to false as usual to validate it separately especially for displaying separate user friendly error messages when such fields are left blank.

Therefore, in addition to validating with HibernateValidator and custom editors, I'm trying to use the following validation strategy. Again, this kind of validation is only for those fields which are registered for custom editors are when left blank.

The following is the class that implements the org.springframework.validation.Validator interface.

package test; import org.springframework.stereotype.Component; import org.springframework.validation.Errors; import org.springframework.validation.ValidationUtils; import org.springframework.validation.Validator; import validatorbeans.TempBean; @Component public final class TempValidator implements Validator { @Override public boolean supports(Class<?> clazz) { System.out.println("supports() invoked."); return TempBean.class.isAssignableFrom(clazz); } @Override public void validate(Object target, Errors errors) { TempBean tempBean = (TempBean) target; System.out.println("startDate = " + tempBean.getStartDate() + " validate() invoked."); System.out.println("doubleValue = " + tempBean.getDoubleValue() + " validate() invoked."); System.out.println("stringValue = " + tempBean.getStringValue() + " validate() invoked."); ValidationUtils.rejectIfEmptyOrWhitespace(errors, "startDate", "java.util.date.nullOrEmpty.error"); ValidationUtils.rejectIfEmptyOrWhitespace(errors, "doubleValue", "java.lang.double.nullOrEmpty.error"); } }

The class is designated with the @Component annotation so that it can be auto-wired to a specific Spring controller class. The debugging statements display exactly based on the input provided by a user.

The following is the controller class.

package controller; import customizeValidation.CustomizeValidation; import java.util.Map; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import javax.validation.Valid; import javax.validation.groups.Default; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; import org.springframework.validation.BindingResult; import org.springframework.validation.DataBinder; import org.springframework.web.bind.annotation.ModelAttribute; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import test.TempValidator; import validatorbeans.TempBean; @Controller public final class TempController { @Autowired private TempService tempService; private TempValidator tempValidator; public TempValidator getTempValidator() { return tempValidator; } @Autowired public void setTempValidator(TempValidator tempValidator) { this.tempValidator = tempValidator; } @RequestMapping(method = {RequestMethod.GET}, value = {"admin_side/Temp"}) public String showForm(@ModelAttribute("tempBean") @Valid TempBean tempBean, BindingResult error, Map model, HttpServletRequest request, HttpServletResponse response) { return "admin_side/Temp"; } @RequestMapping(method = {RequestMethod.POST}, value = {"admin_side/Temp"}) public String onSubmit(@ModelAttribute("tempBean") @Valid TempBean tempBean, BindingResult errors, Map model, HttpServletRequest request, HttpServletResponse response) { //tempValidator.supports(TempBean.class); //tempValidator.validate(tempBean, errors); DataBinder dataBinder = new DataBinder(tempBean); dataBinder.setValidator(tempValidator); dataBinder.validate(); //errors=dataBinder.getBindingResult(); if (CustomizeValidation.isValid(errors, tempBean, TempBean.ValidationGroup.class, Default.class) && !errors.hasErrors()) { System.out.println("Validated"); } return "admin_side/Temp"; } }

I'm invoking the validator from the Spring controller class itself (which I indeed want) by

DataBinder dataBinder = new DataBinder(tempBean); dataBinder.setValidator(tempValidator); dataBinder.validate();

The validator is called but the validation which is expected is not performed.

If only I invoke the validator manually using the following statement (which is commented out above),

tempValidator.validate(tempBean, errors);

then validation is performed. So I don't believe my validator is correctly working. Why does it fail to work with DataBinder?

In my application-context.xml file, this bean is simply configured as follows.

This many packages as below including the test package which the TempValidator class is enclosed within are auto-detected.

<context:component-scan base-package="controller spring.databinder validatorbeans validatorcommands test" use-default-filters="false"> <context:include-filter expression="org.springframework.stereotype.Controller" type="annotation"/> <context:include-filter expression="org.springframework.web.bind.annotation.ControllerAdvice" type="annotation"/> </context:component-scan>

I have even tried to put

In my dispatcher-servlet.xml file.

What am I overlooking here?

最满意答案

如果我很清楚你想要达到的目的 - 区分空白字段和输入的错误值 - 你可以使用更多更简单的方法：

public class MyBean { @NotNull @DateTimeFormat(pattern="dd.MM.yyyy HH:mm") private DateTime date; @NotNull @Max(value=5) private Integer max; @NotNull @Size(max=20) private String name; // getters, setters ... }

控制器映射：

public void submitForm(@ModelAttribute @Valid MyBean myBean, BindingResult result) { if (result.hasErrors){ // do something} else{ // do something else } }

验证消息：

NotNull=Required field. NotNull.date=Date is required field. NotNull.max=Max is required field. Size=Must be between {2} and {1} letters. Max=Must be lower than {1}. typeMismatch.java.lang.Integer=Must be number. typeMismatch.org.joda.time.DateTime=Required format dd.mm.yyyy HH:mm

弹簧配置：

@Configuration public class BaseValidatorConfig { @Bean public LocalValidatorFactoryBean getValidator() { LocalValidatorFactoryBean lvfb = new LocalValidatorFactoryBean(); lvfb.setValidationMessageSource(getValidationMessageSource()); return lvfb; } protected MessageSource getValidationMessageSource() {// return you validation messages ...} }

如果需要，我可以提供更多细节和解释。

If I understand well what you try to achieve - distinguish between blank fields and incorrect values entered - you can use MUCH MORE SIMPLER approach:

public class MyBean { @NotNull @DateTimeFormat(pattern="dd.MM.yyyy HH:mm") private DateTime date; @NotNull @Max(value=5) private Integer max; @NotNull @Size(max=20) private String name; // getters, setters ... }

Controller mapping:

public void submitForm(@ModelAttribute @Valid MyBean myBean, BindingResult result) { if (result.hasErrors){ // do something} else{ // do something else } }

Validation messages:

NotNull=Required field. NotNull.date=Date is required field. NotNull.max=Max is required field. Size=Must be between {2} and {1} letters. Max=Must be lower than {1}. typeMismatch.java.lang.Integer=Must be number. typeMismatch.org.joda.time.DateTime=Required format dd.mm.yyyy HH:mm

Spring configuration:

@Configuration public class BaseValidatorConfig { @Bean public LocalValidatorFactoryBean getValidator() { LocalValidatorFactoryBean lvfb = new LocalValidatorFactoryBean(); lvfb.setValidationMessageSource(getValidationMessageSource()); return lvfb; } protected MessageSource getValidationMessageSource() {// return you validation messages ...} }

I can provide more details and explanation, if needed.

更多推荐