javax.validation.ValidationException: HV000183: 无法加载“javax.el.E​​xpressionFactory" [英] javax.validation.ValidationException: HV000183: Unable to load 'javax.el.ExpressionFactory'

问题描述

我尝试使用休眠验证器编写非常简单的应用程序:

I try to write very simple application with hibernate validator:

我的步骤:

在 pom.xml 中添加以下依赖:

add following dependency in pom.xml:

<dependency>
    <groupId>org.hibernate</groupId>
    <artifactId>hibernate-validator</artifactId>
    <version>5.1.1.Final</version>
</dependency>

写代码:

class Configuration {
    Range(min=1,max=100)
    int threadNumber;
    //...

    public static void main(String[] args) {
        ValidatorFactory factory = Validation.buildDefaultValidatorFactory();

        Validator validator = factory.getValidator();

        Configuration configuration = new Configuration();
        configuration.threadNumber = 12;
            //...

        Set<ConstraintViolation<Configuration>> constraintViolations = validator.validate(configuration);
        System.out.println(constraintViolations);

    }
}

我得到以下堆栈跟踪:

Exception in thread "main" javax.validation.ValidationException: Unable to instantiate Configuration.
    at javax.validation.Validation$GenericBootstrapImpl.configure(Validation.java:279)
    at javax.validation.Validation.buildDefaultValidatorFactory(Validation.java:110)
    ...
    at org.hibernate.validator.internal.engine.ConfigurationImpl.<init>(ConfigurationImpl.java:110)
    at org.hibernate.validator.internal.engine.ConfigurationImpl.<init>(ConfigurationImpl.java:86)
    at org.hibernate.validator.HibernateValidator.createGenericConfiguration(HibernateValidator.java:41)
    at javax.validation.Validation$GenericBootstrapImpl.configure(Validation.java:276)
    ... 2 more

我做错了什么?

推荐答案

添加到 pom.xml 以下依赖项后工作正常:

It is working after adding to pom.xml following dependencies:

<dependency>
   <groupId>javax.el</groupId>
   <artifactId>javax.el-api</artifactId>
   <version>2.2.4</version>
</dependency>
<dependency>
   <groupId>org.glassfish.web</groupId>
   <artifactId>javax.el</artifactId>
   <version>2.2.4</version>
</dependency>

Hibernate Validator 入门:

Hibernate Validator 还需要统一表达式语言的实现(JSR 341) 用于评估约束违规消息中的动态表达式.当您的应用程序在 Java EE 容器(例如 WildFly)中运行时，容器已经提供了 EL 实现.但是，在 Java SE 环境中，您必须将实现作为依赖项添加到 POM 文件中.例如，您可以添加以下两个依赖项以使用 JSR 341 参考实现:

Hibernate Validator also requires an implementation of the Unified Expression Language (JSR 341) for evaluating dynamic expressions in constraint violation messages. When your application runs in a Java EE container such as WildFly, an EL implementation is already provided by the container. In a Java SE environment, however, you have to add an implementation as dependency to your POM file. For instance you can add the following two dependencies to use the JSR 341 reference implementation:

<dependency>
   <groupId>javax.el</groupId>
   <artifactId>javax.el-api</artifactId>
   <version>2.2.4</version>
</dependency>
<dependency>
   <groupId>org.glassfish.web</groupId>
   <artifactId>javax.el</artifactId>
   <version>2.2.4</version>
</dependency>

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