spring 自定义弹簧验证错误
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Customize spring validation error
提问by Roberto de Santis
I want customize the spring validation error for
我想自定义弹簧验证错误
@NotNull
@Length(max = 80)
private String email;
but I'm unable to do it. What are the step to follow?
但我做不到。要遵循的步骤是什么？
回答by Chin Huang
The JSR 303 default message interpolation algorithmallows you to customize messages by supplying a resource bundle named ValidationMessages. Create a ValidationMessages.propertiesfile in the classpath containing:
该JSR 303的默认邮件插补算法，您可以通过提供捆绑命名ValidationMessages的资源来定制信息。ValidationMessages.properties在类路径中创建一个文件，其中包含：
javax.validation.constraints.NotNull.message=CUSTOM NOT NULL MESSAGE
javax.validation.constraints.Size.message=CUSTOM SIZE MESSAGE
This changes the default message for the @Sizeconstraint, so you should use the @Sizeconstraint instead of the Hibernate-specific @Lengthconstraint.
这会更改@Size约束的默认消息，因此您应该使用@Size约束而不是特定于 Hibernate 的@Length约束。
Instead of changing the default message for all constraints, you can change the message for a specific constraint instance. Set the messageattribute on the constraint:
您可以更改特定约束实例的消息，而不是更改所有约束的默认消息。message在约束上设置属性：
@NotNull(message = "{email.notnull}")
private String email;
And add the message to the ValidationMessages.propertiesfile:
并将消息添加到ValidationMessages.properties文件中：
email.notnull=E-mail address is required
回答by Pushkar
By Spring I am assuming you mean Spring MVC.
通过 Spring，我假设您指的是 Spring MVC。
From the below reference http://static.springsource.org/spring/docs/2.0.x/reference/mvc.html
从下面的参考 http://static.springsource.org/spring/docs/2.0.x/reference/mvc.html
Here you go -
干得好 -
You create a validator class -
您创建一个验证器类 -
public class UserValidator implements Validator {
public boolean supports(Class candidate) {
return User.class.isAssignableFrom(candidate);
}
public void validate(Object obj, Errors errors) {
ValidationUtils.rejectIfEmptyOrWhitespace(errors, "firstName", "required", "Field is required.");
ValidationUtils.rejectIfEmptyOrWhitespace(errors, "lastName", "required", "Field is required.");
}
}
Put in any validation text you want in the above field.
在上述字段中输入您想要的任何验证文本。
In the JSP you will need the following tag -
在 JSP 中，您将需要以下标记 -
<tr>
<td>First Name:</td>
<td><form:input path="firstName" /></td>
<!-- Show errors for firstName field -->
<td><form:errors path="firstName" /></td>
</tr>
This way any validation error for firstNamewill be printed.
这样，任何验证错误firstName都会被打印出来。
