Question

我在UTF-8中显示Hibernate Validator的自定义ValidationMessages时遇到问题。

对于常见的jsf消息，我遵循了以下建议：i18n with UTF-8 encoded properties files in JSF 2.0 appliaction - 我创建了类Text并在faces-config.xml中使用它。这工作正常。

但是这种方法不适用于ValidationMessages;特殊字符不以UTF-8显示。

有人可以给我一些建议吗？非常感谢你

Answer 1

我以同样的方式解决了。 Hibernate验证器在META-INF / validation.xml

中有配置文件

validation.xml

的示例

<validation-config xmlns="http://jboss.org/xml/ns/javax/validation/configuration"
                   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
                   xsi:schemaLocation="http://jboss.org/xml/ns/javax/validation/configuration">
    <message-interpolator>com.mycompany.validation.utf8.UTF8ResourceBundleMessageInterpolator</message-interpolator>
</validation-config>

UTF8ResourceBundleMessageInterpolator

的实施

public class UTF8ResourceBundleMessageInterpolator extends ResourceBundleMessageInterpolator {

    public UTF8ResourceBundleMessageInterpolator() {
        super(new UTF8ResourceBundleLocator(ResourceBundleMessageInterpolator.USER_VALIDATION_MESSAGES));
    }
}

UTF8ResourceBundleLocator 的实现（带有小修复的PlatformResourceBundleLocator类的克隆）

public class UTF8ResourceBundleLocator implements ResourceBundleLocator {
    private static final Logger logger = LoggerFactory.getLogger(UTF8ResourceBundleLocator.class);

    protected static final ResourceBundle.Control UTF8_CONTROL = new UTF8Control();

    private final String bundleName;

    public UTF8ResourceBundleLocator(String bundleName) {
        this.bundleName = bundleName;
    }


    /**
     * Search current thread classloader for the resource bundle. If not found,
     * search validator (this) classloader.
     *
     * @param locale The locale of the bundle to load.
     * @return the resource bundle or <code>null</code> if none is found.
     */
    @Override
    public ResourceBundle getResourceBundle(Locale locale) {
        ResourceBundle rb = null;
        ClassLoader classLoader = GetClassLoader.fromContext();
        if (classLoader != null) {
            rb = loadBundle(
                    classLoader, locale, bundleName
                            + " not found by thread local classloader"
            );
        }
        if (rb == null) {
            classLoader = GetClassLoader.fromClass(PlatformResourceBundleLocator.class);
            rb = loadBundle(
                    classLoader, locale, bundleName
                            + " not found by validator classloader"
            );
        }

        return rb;
    }

    private ResourceBundle loadBundle(ClassLoader classLoader, Locale locale, String message) {
        ResourceBundle rb = null;
        try {
            rb = ResourceBundle.getBundle(
                    bundleName, locale,
                    classLoader, UTF8_CONTROL
            );
        } catch (MissingResourceException ignored) {
            logger.trace(message);
        }
        return rb;
    }

    private static class GetClassLoader implements PrivilegedAction<ClassLoader> {
        private final Class<?> clazz;

        private static ClassLoader fromContext() {
            final GetClassLoader action = new GetClassLoader(null);
            if (System.getSecurityManager() != null) {
                return AccessController.doPrivileged(action);
            } else {
                return action.run();
            }
        }

        private static ClassLoader fromClass(Class<?> clazz) {
            if (clazz == null) {
                throw new IllegalArgumentException("Class is null");
            }
            final GetClassLoader action = new GetClassLoader(clazz);
            if (System.getSecurityManager() != null) {
                return AccessController.doPrivileged(action);
            } else {
                return action.run();
            }
        }

        private GetClassLoader(Class<?> clazz) {
            this.clazz = clazz;
        }

        @Override
        public ClassLoader run() {
            if (clazz != null) {
                return clazz.getClassLoader();
            } else {
                return Thread.currentThread().getContextClassLoader();
            }
        }
    }
}

UTF8Control 类是来自i18n with UTF-8 encoded properties files in JSF 2.0 appliaction

的类

Answer 2

如果您使用https://stackoverflow.com/a/3646601/5072526中的相同资源包，则可以执行以下操作：

从该答案修改ResourceBundle，因此您有一个额外的构造函数，它采用区域设置：

public I18NUtf8RessourceBundle(Locale locale) {
    setParent(ResourceBundle.getBundle(BUNDLE_NAME, 
            locale, UTF8_CONTROL));
}

然后在默认包中创建一个类ValidationMessages：

public class ValidationMessages extends I18NUtf8RessourceBundle{
   public ValidationMessages() {
        super(null);
    }
}

然后使用特定的Locale（_en，_de等）创建相同的Class：

public class ValidationMessages_en extends I18NUtf8RessourceBundle{
    public ValidationMessages_en() {
        super(Locale.ENGLISH);
    }
}

对所有语言执行相同操作，并且每次都传递不同的区域设置：

有了这个，它可以工作，甚至可以使用与正常翻译相同的验证消息文件！

hibernate验证器+ jsf 2.0：UTF-8中的ValidationMessages.properties

2 个答案: