javax.validation.ValidationException:HV000183:无法加载'javax.el.E​​xpressionFactory'

发布于 2021-02-01 12:45:08

我尝试使用hibernate验证器编写非常简单的应用程序:

我的步骤:

在pom.xml中添加以下依赖项:

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

编写代码:

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stacktrace:

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

我怎么了

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1 个回答
  • 面试哥
    面试哥 2021-02-01
    为面试而生,有面试问题,就找面试哥。

    添加到pom.xml以下依赖项后,它可以工作:

    <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还需要实现统一表达式语言(JSR
    341
    )来评估约束违例消息中的动态表达式。当您的应用程序在WildFly之类的Java
    EE容器中运行时,该容器已经提供了EL实现。但是,在Java SE环境中,必须将实现添加为对POM文件的依赖。例如,您可以添加以下两个依赖项以使用JSR
    341 参考实现

    <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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