Thymeleaf：如何在JSR-303批注中使用自定义消息密钥 [英] Thymeleaf : How to use Custom Message Key in JSR-303 Annotation

问题描述

使用Thymeleaf

Use Thymeleaf

Person.java

Person.java

public class Person {
    @NotEmpty(message="{Valid.Password}")
    private String password;
}

message.properties

message.properties

Valid.Password = Password is Empty!!

Login.html

Login.html

<span class="error" th:errors="person.password"></span>

th：错误无法检索'有效.Password'消息
该区域显示为空。

th:errors can not retrieve 'Valid.Password' Message That area is shown as empty.

如果消息密钥更改为message.properties的NotEmpty.person.password，则表明它正在运行。

if message key change to NotEmpty.person.password of message.properties, then it is working.

如何使用自定义消息密钥？

how to use custom message key?

推荐答案

使用javax。对类进行验证约束并添加自定义消息要求您基本上覆盖默认消息。
例如：

using javax.validation constrains on class and adding custom messages requires you to basically override default messages. for example:

public class Vehicle implements Serializable {

    private static final long serialVersionUID = 1L;

    @Size(min=17, max=17, message="VIN number must have 17 characters")
    private String vin;


    @NotEmpty
    @Pattern(regexp="[a-z]*", flags = Pattern.Flag.CASE_INSENSITIVE)
    private String make;

    @NotEmpty
    @Pattern(regexp="[a-z]*", flags = Pattern.Flag.CASE_INSENSITIVE)
    private String model;

要覆盖默认值，您可以在验证中插入自定义消息，例如VIN，或者将它们添加到messages.properties文件：

To override default values, you insert custom message in the validation itself like for VIN, or add them to the messages.properties file:

# Validation messages
notEmpty.message = The value may not be empty!
notNull.message = The value cannot be null!

这样你就可以覆盖以下的默认值：

In this way you are overriding default values for:

javax.validation.constraints.NotEmpty.message
javax.validation.constraints.NotNull.message

如果您需要针对不同字段的特定消息，则消息属性应包含以下格式：[constraintName.Class.field]。例如：

If you require specific message for different fields, your message properties should include them in the following format: [constraintName.Class.field]. For example:

NotEmpty.Vehicle.model = Model cannot be empty!

如果您不包含上面的覆盖值，它将显示默认值或一般覆盖，如notEmpty消息。

If you do not include override values like one above, it will show default value, or general override like notEmpty message.

当然，还有其他方法可以显示验证消息，例如使用Validator实例中出现的ConstraintViolation对象所需的信息。

Of course, there are other ways of showing validation messages, like using information you need from the ConstraintViolation object that comes out of the Validator instance.

希望这有帮助，

这篇关于Thymeleaf：如何在JSR-303批注中使用自定义消息密钥的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！