MockClassLoader无法访问jdk / internal / reflect超类jdk.internal.reflect.MagicAccessorImpl

Question

我正在将项目迁移到Java9中，在切换到新的Java版本后，测试开始失败，看来PowerMock正在尝试访问一些它无法访问的类。

Tests run: 1, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 0.973 sec <<< FAILURE! - in com.Test
initializationError(com.Test)  Time elapsed: 0.007 sec  <<< ERROR!
org.objenesis.ObjenesisException: java.lang.reflect.InvocationTargetException
Caused by: java.lang.reflect.InvocationTargetException
Caused by: java.lang.IllegalAccessError: class jdk.internal.reflect.ConstructorAccessorImpl loaded by org/powermock/core/classloader/MockClassLoader cannot access jdk/internal/reflect superclass jdk.internal.reflect.MagicAccessorImpl

Maven-surefire-插件

<plugin>
    <artifactId>maven-surefire-plugin</artifactId>
    <version>2.19.1</version>
    <configuration>
        <includes>
            <include>**/*Test.java</include>
            <include>**/*Test.groovy</include>
            <include>**/*Spec.*</include>
        </includes>
        <forkMode>always</forkMode>
        <argLine>--add-modules java.xml.bind</argLine>
        <argLine>--add-modules java.activation</argLine>
        <argLine>--add-opens=java.base/java.lang=ALL-UNNAMED --illegal-access=warn</argLine>
    </configuration>
</plugin>

powermock依赖

<dependency>
        <groupId>org.powermock</groupId>
        <artifactId>powermock-module-junit4</artifactId>
        <version>1.7.4</version>
        <scope>test</scope>
    </dependency>

    <dependency>
        <groupId>org.powermock</groupId>
        <artifactId>powermock-api-mockito</artifactId>
        <version>1.7.4</version>
        <scope>test</scope>
        <exclusions>
            <exclusion>
                <groupId>org.mockito</groupId>
                <artifactId>mockito-all</artifactId>
            </exclusion>
        </exclusions>
    </dependency>

Answer 1

我对使用 powermock 的第三方 jar 有测试依赖性。为了解决这个错误，我不得不添加：

@PowerMockIgnore("jdk.internal.reflect.*")

到被测试的班级 powermock

Answer 2

这是一个（当前）未解决的问题@powermock，但是对于Java 9来说应该可以使用：

<dependency>
  <groupId>org.mockito</groupId>
  <artifactId>mockito-core</artifactId>
  <version>2.18.0</version> <!-- or higher, correspondning to powermock-version -->
</dependency>
<dependency>
  <groupId>org.powermock</groupId>
  <artifactId>powermock-api-mockito2</artifactId>
  <version>2.0.0-beta.5</version> <!-- or higher -->
</dependency>
<dependency>
  <groupId>org.powermock</groupId>
  <artifactId>powermock-module-junit4</artifactId>
  <version>2.0.0-beta.5</version> <!-- or higher -->
</dependency>

参见：https : //github.com/powermock/powermock/issues/901#issuecomment-385533096

使用Java 11，Mosheer-Ahmad设法通过以下方式运行测试：

1. 上述依赖关系，
2. 对org.javassist javassist 3.24.1-GA test和的额外依赖

3. 此（测试基础）类/注释：

   @RunWith(PowerMockRunner.class)
   @PowerMockIgnore({"javax.management.", "com.sun.org.apache.xerces.", 
     "javax.xml.", "org.xml.", "org.w3c.dom.",
     "com.sun.org.apache.xalan.", "javax.activation.*"})
   public class PowerMockitoBaseRunner {
   
   }
   

   。

Answer 3

只是重申 sghaier ali 提出的非常好的观点。

将 * 添加到被忽略的类解决了这个问题。

所做的更改是：

• build.gradle 中的以下依赖项：

  testImplementation 'org.mockito:mockito-core:3.3.3'
  testImplementation 'org.powermock:powermock-api-mockito2:2.0.5'
  testImplementation 'org.powermock:powermock-module-junit4:2.0.5'
  

• 注释特定的类：

  @PowerMockIgnore({"javax.management.*", "com.sun.org.apache.xerces.*", "javax.xml.*",
      "org.xml.*", "org.w3c.dom.*", "com.sun.org.apache.xalan.*", "javax.activation.*"})
  

Answer 4

正如 @smac89 提到的，我所要做的就是忽略有问题的包。

通过注释我的测试类@PowerMockIgnore("jdk.internal.reflect.*")

我的 Maven 依赖项是：

    <dependency>
        <groupId>org.powermock</groupId>
        <artifactId>powermock-module-junit4</artifactId>
        <version>1.7.4</version>
        <scope>test</scope>
      </dependency>
    <dependency>
      <groupId>org.powermock</groupId>
      <artifactId>powermock-api-mockito</artifactId>
      <version>1.7.4</version>
      <scope>test</scope>
    </dependency>

Java版本：

java -version
openjdk version "11.0.1" 2018-10-16
OpenJDK Runtime Environment 18.9 (build 11.0.1+13)
OpenJDK 64-Bit Server VM 18.9 (build 11.0.1+13, mixed mode)