如何在hibernate驗證器消息中提供花括號（提供測試用例）

Question

我想把{this}這樣的東西作爲hibernate驗證器驗證消息的消息值。

，所以我逃過屬性此給定的消息的值文件：\ {此\}

然而Hibrnate驗證程序嘗試，以檢查是否存在給定密鑰的消息。 我認爲這是一個錯誤，但也許我做錯了什麼？ （與Hibernate驗證器4.3.1和5.0.1進行測試 - 同樣的結果 - 堆棧溢出

測試用例：

（爲了簡化它不具有屬性文件，我剛剛返回從Java類值在現實中。會的handleGetObject讀我的自定義提供的屬性值）：

import org.hibernate.validator.HibernateValidator; 
import org.hibernate.validator.HibernateValidatorConfiguration; 
import org.hibernate.validator.internal.engine.constraintvalidation.ConstraintValidatorFactoryImpl; 
import org.hibernate.validator.messageinterpolation.ResourceBundleMessageInterpolator; 
import org.hibernate.validator.spi.resourceloading.ResourceBundleLocator; 
import org.junit.Test; 

import javax.validation.*; 
import javax.validation.constraints.Max; 
import java.util.Enumeration; 
import java.util.Locale; 
import java.util.ResourceBundle; 
import java.util.Set; 


public class HibValTest { 

@Test 
public void shouldNotSubstituteEscaped() throws Exception { 

    MessageInterpolator interpolator = new ResourceBundleMessageInterpolator(new ResourceBundleLocator() { 

     @Override 
     public ResourceBundle getResourceBundle(Locale locale) { 
      return new ResourceBundle() { 

       @Override 
       protected Object handleGetObject(String key) { 
        return "\\{escapedKey\\}"; 
       } 

       @Override 
       public Enumeration<String> getKeys() { 
        throw new UnsupportedOperationException(); 
       } 
      }; 
     } 
    }, false); 

    HibernateValidatorConfiguration config = Validation.byProvider(HibernateValidator.class).configure(); 
    config = config.messageInterpolator(interpolator).constraintValidatorFactory(new ConstraintValidatorFactoryImpl()); 

    ValidatorFactory factory = config.buildValidatorFactory(); 
    Validator validator = factory.getValidator(); 

    Set<ConstraintViolation<A>> validate = validator.validate(new A()); 
} 

private class A { 
    @Max(value=1, message = "{key}") 
    private int a=2; 
} 
} 

結果：

at org.hibernate.validator.messageinterpolation.ResourceBundleMessageInterpolator.resolveParameter(ResourceBundleMessageInterpolator.java:244) 
at org.hibernate.validator.messageinterpolation.ResourceBundleMessageInterpolator.interpolateBundleMessage(ResourceBundleMessageInterpolator.java:211) 
at org.hibernate.validator.messageinterpolation.ResourceBundleMessageInterpolator.resolveParameter(ResourceBundleMessageInterpolator.java:244) 
at org.hibernate.validator.messageinterpolation.ResourceBundleMessageInterpolator.interpolateBundleMessage(ResourceBundleMessageInterpolator.java:211) 
at org.hibernate.validator.messageinterpolation.ResourceBundleMessageInterpolator.resolveParameter(ResourceBundleMessageInterpolator.java:244) 
at org.hibernate.validator.messageinterpolation.ResourceBundleMessageInterpolator.interpolateBundleMessage(ResourceBundleMessageInterpolator.java:211) 
at org.hibernate.validator.messageinterpolation.ResourceBundleMessageInterpolator.resolveParameter(ResourceBundleMessageInterpolator.java:244) 
at org.hibernate.validator.messageinterpolation.ResourceBundleMessageInterpolator.interpolateBundleMessage(ResourceBundleMessageInterpolator.java:211) 

Answer 1

這看起來的確是一個錯誤你能創建一票請在我們issue tracker？目前，您可以通過不提供轉義密鑰的值（如果可能的話）來解決此問題，例如，像這樣：

protected Object handleGetObject(String key) { 
    return key.equals("key") ? "\\{escapedKey\\}" : null; 
}