带有Selenium ClassNotFoundException的Spring Boot JUnit:org.apache.xml.utils.PrefixResolver [英] Spring Boot JUnit with Selenium ClassNotFoundException: org.apache.xml.utils.PrefixResolver

问题描述

我正在尝试使用硒运行一个简单的测试，但是运行测试时却收到ClassNotFoundException，并且我不知道要导入什么依赖项才能解决此问题.

I am trying to run a simple test with selenium, but I am getting ClassNotFoundException when I run my test and I don't know what dependency to import to solve this issue.

我找不到任何与此有所不同的示例.

I couldn't find any example that did something different from this.

我正在使用Java 8和spring-boot 1.5.10.RELEASE

I am using Java 8 and spring-boot 1.5.10.RELEASE

你们能帮我吗?

@RunWith(SpringRunner.class)
@SpringBootTest(webEnvironment = WebEnvironment.RANDOM_PORT)
@AutoConfigureMockMvc
public class VersaoControllerTest extends AbstractTest{

    @Autowired
    private MockMvc mockMvc;

    @Autowired
    private WebDriver webDriver;

    @Test
    public void test() {
        this.webDriver.get("/");
    }
}

pom.xml

    <dependency>
        <groupId>org.seleniumhq.selenium</groupId>
        <artifactId>selenium-api</artifactId>
    </dependency>

    <dependency>
        <groupId>org.seleniumhq.selenium</groupId>
        <artifactId>htmlunit-driver</artifactId>
        <scope>test</scope>
    </dependency>

错误:

Caused by: java.lang.ClassNotFoundException: org.apache.xml.utils.PrefixResolver
    at java.net.URLClassLoader.findClass(URLClassLoader.java:381) ~[?:1.8.0_131]
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[?:1.8.0_131]
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:335) ~[?:1.8.0_131]
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[?:1.8.0_131]
    at java.lang.ClassLoader.defineClass1(Native Method) ~[?:1.8.0_131]
    at java.lang.ClassLoader.defineClass(ClassLoader.java:763) ~[?:1.8.0_131]
    at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) ~[?:1.8.0_131]
    at java.net.URLClassLoader.defineClass(URLClassLoader.java:467) ~[?:1.8.0_131]
    at java.net.URLClassLoader.access$100(URLClassLoader.java:73) ~[?:1.8.0_131]
    at java.net.URLClassLoader$1.run(URLClassLoader.java:368) ~[?:1.8.0_131]
    at java.net.URLClassLoader$1.run(URLClassLoader.java:362) ~[?:1.8.0_131]
    at java.security.AccessController.doPrivileged(Native Method) ~[?:1.8.0_131]
    at java.net.URLClassLoader.findClass(URLClassLoader.java:361) ~[?:1.8.0_131]
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[?:1.8.0_131]
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:335) ~[?:1.8.0_131]
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[?:1.8.0_131]
    at com.gargoylesoftware.htmlunit.javascript.configuration.JavaScriptConfiguration.<clinit>(JavaScriptConfiguration.java:407) ~[htmlunit-2.21.jar:2.21]
    at com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine.<init>(JavaScriptEngine.java:129) ~[htmlunit-2.21.jar:2.21]
    at com.gargoylesoftware.htmlunit.WebClient.init(WebClient.java:239) ~[htmlunit-2.21.jar:2.21]
    at com.gargoylesoftware.htmlunit.WebClient.<init>(WebClient.java:213) ~[htmlunit-2.21.jar:2.21]
    at com.gargoylesoftware.htmlunit.WebClient.<init>(WebClient.java:204) ~[htmlunit-2.21.jar:2.21]
    at org.springframework.boot.test.web.htmlunit.LocalHostWebClient.<init>(LocalHostWebClient.java:40) ~[spring-boot-test-1.5.10.RELEASE.jar:1.5.10.RELEASE]
    at org.springframework.boot.test.autoconfigure.web.servlet.MockMvcWebClientAutoConfiguration.mockMvcWebClientBuilder(MockMvcWebClientAutoConfiguration.java:55) ~[spring-boot-test-autoconfigure-1.5.10.RELEASE.jar:1.5.10.RELEASE]
    at org.springframework.boot.test.autoconfigure.web.servlet.MockMvcWebClientAutoConfiguration$$EnhancerBySpringCGLIB$$90ad153.CGLIB$mockMvcWebClientBuilder$0(<generated>) ~[spring-boot-test-autoconfigure-1.5.10.RELEASE.jar:1.5.10.RELEASE]
    at org.springframework.boot.test.autoconfigure.web.servlet.MockMvcWebClientAutoConfiguration$$EnhancerBySpringCGLIB$$90ad153$$FastClassBySpringCGLIB$$cf4a3653.invoke(<generated>) ~[spring-boot-test-autoconfigure-1.5.10.RELEASE.jar:1.5.10.RELEASE]
    at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:228) ~[spring-core-4.3.14.RELEASE.jar:4.3.14.RELEASE]
    at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:358) ~[spring-context-4.3.14.RELEASE.jar:4.3.14.RELEASE]
    at org.springframework.boot.test.autoconfigure.web.servlet.MockMvcWebClientAutoConfiguration$$EnhancerBySpringCGLIB$$90ad153.mockMvcWebClientBuilder(<generated>) ~[spring-boot-test-autoconfigure-1.5.10.RELEASE.jar:1.5.10.RELEASE]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_131]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_131]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_131]
    at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_131]
    at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:162) ~[spring-beans-4.3.14.RELEASE.jar:4.3.14.RELEASE]
    at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:588) ~[spring-beans-4.3.14.RELEASE.jar:4.3.14.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1173) ~[spring-beans-4.3.14.RELEASE.jar:4.3.14.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1067) ~[spring-beans-4.3.14.RELEASE.jar:4.3.14.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:513) ~[spring-beans-4.3.14.RELEASE.jar:4.3.14.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483) ~[spring-beans-4.3.14.RELEASE.jar:4.3.14.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) ~[spring-beans-4.3.14.RELEASE.jar:4.3.14.RELEASE]
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) ~[spring-beans-4.3.14.RELEASE.jar:4.3.14.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) ~[spring-beans-4.3.14.RELEASE.jar:4.3.14.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) ~[spring-beans-4.3.14.RELEASE.jar:4.3.14.RELEASE]
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:761) ~[spring-beans-4.3.14.RELEASE.jar:4.3.14.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:867) ~[spring-context-4.3.14.RELEASE.jar:4.3.14.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:543) ~[spring-context-4.3.14.RELEASE.jar:4.3.14.RELEASE]
    at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:122) ~[spring-boot-1.5.10.RELEASE.jar:1.5.10.RELEASE]
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:693) ~[spring-boot-1.5.10.RELEASE.jar:1.5.10.RELEASE]
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:360) ~[spring-boot-1.5.10.RELEASE.jar:1.5.10.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:303) ~[spring-boot-1.5.10.RELEASE.jar:1.5.10.RELEASE]
    at org.springframework.boot.test.context.SpringBootContextLoader.loadContext(SpringBootContextLoader.java:120) ~[spring-boot-test-1.5.10.RELEASE.jar:1.5.10.RELEASE]
    at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContextInternal(DefaultCacheAwareContextLoaderDelegate.java:98) ~[spring-test-4.3.14.RELEASE.jar:4.3.14.RELEASE]
    at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:116) ~[spring-test-4.3.14.RELEASE.jar:4.3.14.RELEASE]
    ... 27 more

推荐答案

java.lang.ClassNotFoundException

ClassNotFoundException 是Java的子类 java.lang.Exception 并在 Java虚拟机尝试加载特定的类，但未在类路径中找到请求的类.这是一个检查过的异常，使用try-catch块或使用throws子句，可能抛出 ClassNotFoundException 的对象必须使用显式的异常处理方法.

java.lang.ClassNotFoundException

ClassNotFoundException in Java is a subclass of java.lang.Exception and occurs when Java Virtual Machine tries to load a particular class and doesn't finds the requested class in classpath. It is a checked Exception and explicit Exception handling methods are required to what can possibly be throwing ClassNotFoundException either by using try-catch block or by using throws clause.

根据 Java文档

As per the Java Docs ClassNotFoundException comes in following cases:

1. 当我们尝试使用 Class.forName() 方法加载类并且 .class 文件或类二进制文件在类路径中不可用时.
2. 当 Classloader 尝试使用 findSystemClass() 方法加载类时.
3. 在Java中使用类 ClassLoader 的 loadClass() 方法.

1. When we try to load a class by using Class.forName() method and .class file or binary of class is not available in classpath.
2. When Classloader try to load a class by using findSystemClass() method.
3. While using loadClass() method of class ClassLoader in Java.

ClassNotFoundExcepiton仅在JVM尝试在运行时加载类时出现，而与编译时无关，这与

ClassNotFoundExcepiton can arise only when JVM tries to load a class at run-time but nothing related to compile time which is unlike NoClassDefFoundError. This is because till run time JVM doesn't know about this Class and it can only be done by above specified method or by employing Reflection to read the name of class from some configuration and then load the class specified on those configuration file.

该错误确实提示我们出了什么问题，如下所示:

The error does gives us a hint what is going wrong as follows :

Caused by: java.lang.ClassNotFoundException: org.apache.xml.utils.PrefixResolver

根据 pom.xml ，您明确共享了 <version>x.y.z</version> 标记缺失.您需要按以下方式更改 :

As per the pom.xml you have shared clearly the <version>x.y.z</version> tag is missing. You need to change the as follows :

• selenium-api

• selenium-api

<!-- https://mvnrepository.com/artifact/org.seleniumhq.selenium/selenium-api -->
<dependency>
    <groupId>org.seleniumhq.selenium</groupId>
    <artifactId>selenium-api</artifactId>
    <version>3.10.0</version>
</dependency>

selenium-htmlunit-driver

selenium-htmlunit-driver

 <!-- https://mvnrepository.com/artifact/org.seleniumhq.selenium/selenium-htmlunit-driver -->
 <dependency>
     <groupId>org.seleniumhq.selenium</groupId>
     <artifactId>selenium-htmlunit-driver</artifactId>
     <version>2.52.0</version>
 </dependency>

在使用 spring-boot 1.5.10 时，您可能还需要添加以下任一 <dependency> :

As you are using spring-boot 1.5.10 additionally you may also require to add either of the following <dependency> :

• selenium-java

• selenium-java

<!-- https://mvnrepository.com/artifact/org.seleniumhq.selenium/selenium-java -->
<dependency>
    <groupId>org.seleniumhq.selenium</groupId>
    <artifactId>selenium-java</artifactId>
    <version>3.10.0</version>
</dependency>

selenium-server

selenium-server

<!-- https://mvnrepository.com/artifact/org.seleniumhq.selenium/selenium-server -->
<dependency>
    <groupId>org.seleniumhq.selenium</groupId>
    <artifactId>selenium-server</artifactId>
    <version>3.10.0</version>
</dependency>

这篇关于带有Selenium ClassNotFoundException的Spring Boot JUnit:org.apache.xml.utils.PrefixResolver的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！