验证时无法在 GAE 上初始化“javax.el.ExpressionFactory”答案

【问题标题】：Unable to initialize 'javax.el.ExpressionFactory' on GAE while validating验证时无法在 GAE 上初始化“javax.el.ExpressionFactory”
【发布时间】：2018-05-29 12:59:35
【问题描述】：

我正在 GAE 上用 Java8 制作应用程序。我使用 Gson 将 json 序列化和反序列化为 pojo，我想使用 javax.validation 来验证这些 POJO。这里没有弹簧或其他任何东西。我发现常见的实现是 Hibernate 验证器。所以我的 pom 经过多次搜索后包含：

<dependency>
    <groupId>javax.validation</groupId>
    <artifactId>validation-api</artifactId>
    <version>2.0.0.Final</version>
</dependency>
<dependency>
    <groupId>org.hibernate.validator</groupId>
    <artifactId>hibernate-validator</artifactId>
    <version>6.0.2.Final</version>
</dependency>
<dependency>
    <groupId>org.hibernate.validator</groupId>
    <artifactId>hibernate-validator-annotation-processor</artifactId>
    <version>6.0.2.Final</version>
</dependency>
<dependency>
    <groupId>org.glassfish</groupId>
    <artifactId>javax.el</artifactId>
    <version>3.0.1-b08</version>
</dependency>

和

instance.factory = Validation.buildDefaultValidatorFactory();

为空

和日志显示

javax.validation.ValidationException: HV000183: Unable to initialize 'javax.el.ExpressionFactory'. Check that you have the EL dependencies on the classpath, or use ParameterMessageInterpolator instead
    at org.hibernate.validator.messageinterpolation.ResourceBundleMessageInterpolator.buildExpressionFactory(ResourceBundleMessageInterpolator.java:122)
    at org.hibernate.validator.messageinterpolation.ResourceBundleMessageInterpolator.<init>(ResourceBundleMessageInterpolator.java:46)
    at org.hibernate.validator.internal.engine.ConfigurationImpl.getDefaultMessageInterpolator(ConfigurationImpl.java:420)
    at org.hibernate.validator.internal.engine.ConfigurationImpl.getDefaultMessageInterpolatorConfiguredWithClassLoader(ConfigurationImpl.java:596)
    at org.hibernate.validator.internal.engine.ConfigurationImpl.getMessageInterpolator(ConfigurationImpl.java:355)
    at org.hibernate.validator.internal.engine.ValidatorFactoryImpl.<init>(ValidatorFactoryImpl.java:149)
    at org.hibernate.validator.HibernateValidator.buildValidatorFactory(HibernateValidator.java:38)
    at org.hibernate.validator.internal.engine.ConfigurationImpl.buildValidatorFactory(ConfigurationImpl.java:322)
    at javax.validation.Validation.buildDefaultValidatorFactory(Validation.java:103)

请帮助伊万

【问题讨论】：

标签： java hibernate maven validation google-app-engine

【解决方案1】：

这对我有帮助。将此依赖项添加到您的 pom.xml

    <dependency>
        <groupId>org.glassfish</groupId>
        <artifactId>javax.el</artifactId>
        <version>3.0.1-b08</version>
        <scope>test</scope>
    </dependency>

【讨论】：