Question

我尝试在spring上下文中测试验证器（hibernate-validator 5.1.3.Final）。如果对象有效，则测试正常。但是如果对象具有无效字段，则错误为

java.lang.NoSuchMethodError： javax.el.ExpressionFactory.newInstance（）Ljavax / EL / ExpressionFactory。

Validator在tomcat 8.0服务器上正常工作。

我添加了以下依赖项，并尝试了2.2。*版本。

<dependency>
    <groupId>javax.el</groupId>
    <artifactId>javax.el-api</artifactId>
    <version>3.0.0</version>
    <scope>test</scope>
</dependency>
<dependency>
    <groupId>org.glassfish</groupId>
    <artifactId>javax.el</artifactId>
    <version>3.0.0</version>
    <scope>test</scope>
</dependency>

验证器的配置：

<beans:bean
        class="org.springframework.context.support.ReloadableResourceBundleMessageSource"
        id="messageSource" p:basenames="WEB-INF/i18n/messages, WEB-INF/i18n/application"
        p:fallbackToSystemLocale="false" />

<beans:bean id="validator"
        class="org.springframework.validation.beanvalidation.LocalValidatorFactoryBean">
        <beans:property name="validationMessageSource" ref="messageSource"/>    
</beans:bean>

测试

@DirtiesContext
@ContextConfiguration(classes = {ValidatorTestConfig.class})
public class ValidatorTest extends AbstractJUnit4SpringContextTests {

    @Autowired
    private Validator validator;

    private UserTO user;

    @Before
    public void initializeUser() {
        user = new UserTO();
        user.setNick("abcd");
        user.setEmail("abcd@abcd.com");
        PasswordTO password = new PasswordTO();
        password.setPassword1("12345678");
        password.setPassword2("12345678");
        user.setPassword(password);
    }

    @Test
    public void testValidUser() {

        Set<ConstraintViolation<UserTO>> constraintViolations = validator.validate(user);

        Assert.assertEquals(0, constraintViolations.size());
    }

    @Test
    public void testIllegalNickLength() {

        user.setNick("a");
        Set<ConstraintViolation<UserTO>> constraintViolations = validator.validate(user);

         Assert.assertEquals(1, constraintViolations.size());

         ConstraintViolation<UserTO> violation =  constraintViolations.iterator().next();
         assertThat(violation.getPropertyPath().toString(), equalTo("nick"));

    }

跟踪：

java.lang.NoSuchMethodError: javax.el.ExpressionFactory.newInstance()Ljavax/el/ExpressionFactory;
    at org.hibernate.validator.internal.engine.messageinterpolation.InterpolationTerm.<clinit>(InterpolationTerm.java:59)
    at org.hibernate.validator.messageinterpolation.ResourceBundleMessageInterpolator.interpolateExpression(ResourceBundleMessageInterpolator.java:341)
    at org.hibernate.validator.messageinterpolation.ResourceBundleMessageInterpolator.interpolateMessage(ResourceBundleMessageInterpolator.java:279)
    at org.hibernate.validator.messageinterpolation.ResourceBundleMessageInterpolator.interpolate(ResourceBundleMessageInterpolator.java:194)
    at org.springframework.validation.beanvalidation.LocaleContextMessageInterpolator.interpolate(LocaleContextMessageInterpolator.java:50)
    at org.hibernate.validator.internal.engine.ValidationContext.interpolate(ValidationContext.java:362)
    at org.hibernate.validator.internal.engine.ValidationContext.createConstraintViolation(ValidationContext.java:271)
    at org.hibernate.validator.internal.engine.ValidationContext.createConstraintViolations(ValidationContext.java:232)
    at org.hibernate.validator.internal.engine.constraintvalidation.ConstraintTree.validateSingleConstraint(ConstraintTree.java:291)
    at org.hibernate.validator.internal.engine.constraintvalidation.ConstraintTree.validateConstraints(ConstraintTree.java:133)
    at org.hibernate.validator.internal.engine.constraintvalidation.ConstraintTree.validateConstraints(ConstraintTree.java:91)
    at org.hibernate.validator.internal.metadata.core.MetaConstraint.validateConstraint(MetaConstraint.java:83)
    at org.hibernate.validator.internal.engine.ValidatorImpl.validateConstraint(ValidatorImpl.java:547)
    at org.hibernate.validator.internal.engine.ValidatorImpl.validateConstraintsForDefaultGroup(ValidatorImpl.java:487)
    at org.hibernate.validator.internal.engine.ValidatorImpl.validateConstraintsForCurrentGroup(ValidatorImpl.java:451)
    at org.hibernate.validator.internal.engine.ValidatorImpl.validateInContext(ValidatorImpl.java:403)
    at org.hibernate.validator.internal.engine.ValidatorImpl.validate(ValidatorImpl.java:206)
    at org.springframework.validation.beanvalidation.SpringValidatorAdapter.validate(SpringValidatorAdapter.java:207)
    at com.epam.extendedchat.validator.ValidatorTest.testIllegalNickLength(ValidatorTest.java:67)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:483)
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
    at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
    at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:73)
    at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:82)
    at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:73)
    at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:263)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:224)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:83)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:50)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222)
    at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
    at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:68)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:292)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:163)
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
    at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)

Answer 1

我发现here jsp-api“有自己的javax.el.ExpressionFactory副本。这是该类的旧版本 - 不包含newInstance（）方法的版本” 。我用了jsp-api 2.1。当它被改为2.2时，问题就解决了。

还包括以下依赖项

<dependency>
    <groupId>javax.el</groupId>
    <artifactId>javax.el-api</artifactId>
    <version>3.0.0</version>
    <scope>test</scope>
</dependency>
<dependency>
    <groupId>org.glassfish</groupId>
    <artifactId>javax.el</artifactId>
    <version>3.0.0</version>
    <scope>test</scope>
</dependency>

验证器测试期间的NoSuchMethodError（javax.el 3.0.0）

1 个答案: