java.lang.NoSuchMethodError powermock

伙计们 问题: 如何模拟定义了其他静态最终类的静态最终类

问题描述： 当我想为最终类ApplianceRelationshipUtils.java编写一些单元测试用例时，在这个最终类ApplianceRelationshipUtils.java中，总是包含另一个静态类ApplianceUtilities.java。因此，我需要使用powermock模拟静态类ApplianceUtilities.java，如下所示：

    // mock the class for one method only
    PowerMock.mockStaticPartialNice(ApplianceUtilities.class,"getApplianceVersion");

但是在ApplianceUtilities.java中定义了许多静态最终类，如下所示：

private static final IMesUtils m_mesUtils = new MesUtils();
private static final IEndpointUtilities m_endpointUtils = new DefaultEndpointUtilities(m_mesUtils);
private static final ICasUtilities m_casUtils = new  DefaultCasUtilities(m_endpointUtils);
private static final IHAApplianceUtilities m_haUtils = new HAApplianceUtils(m_endpointUtils, m_casUtils);

因此，当我运行testcase时，会抛出一些异常，如下所示：

java.lang.NoSuchMethodError: com.ibm.usmi.services.updates.util.RestartUtilities.<init>(Lcom/ibm/usmi/services/updates/util/IRcsUtilities;Lcom/ibm/usmi/services/updates/util/MesUtils;Lcom/ibm/usmi/services/updates/util/IUpdateUtils;)V
at com.ibm.vmi.updates.appliance.util.HAApplianceUtils.<init>(HAApplianceUtils.java:222)
at com.ibm.vmi.updates.appliance.util.ApplianceUtilities.<clinit>(ApplianceUtilities.java:89)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at net.sf.cglib.proxy.Enhancer.setCallbacksHelper(Enhancer.java:616)
at net.sf.cglib.proxy.Enhancer.setThreadCallbacks(Enhancer.java:609)
at net.sf.cglib.proxy.Enhancer.registerCallbacks(Enhancer.java:578)
at org.easymock.internal.ClassProxyFactory.createProxy(ClassProxyFactory.java:194)
at org.easymock.internal.MocksControl.createMock(MocksControl.java:60)
at org.easymock.internal.MocksControl.createMock(MocksControl.java:98)
at org.powermock.api.easymock.PowerMock.doCreateMock(PowerMock.java:2214)
at org.powermock.api.easymock.PowerMock.doMock(PowerMock.java:2163)
at org.powermock.api.easymock.PowerMock.createMock(PowerMock.java:76)
at org.powermock.api.easymock.PowerMock.createPartialMock(PowerMock.java:762)
at com.ibm.vmi.updates.appliance.relationship.ApplianceRelationshipUtilsTest.test_validateApplianceReqs(ApplianceRelationshipUtilsTest.java:77)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.junit.internal.runners.TestMethod.invoke(TestMethod.java:66)
at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl$PowerMockJUnit44MethodRunner.runTestMethod(PowerMockJUnit44RunnerDelegateImpl.java:312)
at org.junit.internal.runners.MethodRoadie$2.run(MethodRoadie.java:86)
at org.junit.internal.runners.MethodRoadie.runBeforesThenTestThenAfters(MethodRoadie.java:94)
at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl$PowerMockJUnit44MethodRunner.executeTest(PowerMockJUnit44RunnerDelegateImpl.java:296)
at org.powermock.modules.junit4.internal.impl.PowerMockJUnit47RunnerDelegateImpl$PowerMockJUnit47MethodRunner.executeTestInSuper(PowerMockJUnit47RunnerDelegateImpl.java:112)
at org.powermock.modules.junit4.internal.impl.PowerMockJUnit47RunnerDelegateImpl$PowerMockJUnit47MethodRunner.executeTest(PowerMockJUnit47RunnerDelegateImpl.java:73)
at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl$PowerMockJUnit44MethodRunner.runBeforesThenTestThenAfters(PowerMockJUnit44RunnerDelegateImpl.java:284)
at org.junit.internal.runners.MethodRoadie.runTest(MethodRoadie.java:84)
at org.junit.internal.runners.MethodRoadie.run(MethodRoadie.java:49)
at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl.invokeTestMethod(PowerMockJUnit44RunnerDelegateImpl.java:209)
at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl.runMethods(PowerMockJUnit44RunnerDelegateImpl.java:148)
at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl$1.run(PowerMockJUnit44RunnerDelegateImpl.java:122)
at org.junit.internal.runners.ClassRoadie.runUnprotected(ClassRoadie.java:34)
at org.junit.internal.runners.ClassRoadie.runProtected(ClassRoadie.java:44)
at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl.run(PowerMockJUnit44RunnerDelegateImpl.java:120)
at org.powermock.modules.junit4.common.internal.impl.JUnit4TestSuiteChunkerImpl.run(JUnit4TestSuiteChunkerImpl.java:102)
at org.powermock.modules.junit4.common.internal.impl.AbstractCommonPowerMockRunner.run(AbstractCommonPowerMockRunner.java:53)
at org.powermock.modules.junit4.PowerMockRunner.run(PowerMockRunner.java:42)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:49)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)

java.lang.NoSuchMethodError:com.ibm.usmi.services.updates.util.RestartUtilities.（Lcom/ibm/usmi/services/updates/util/IRcsUtilities；Lcom/ibm/usmi/services/updates/util/MesUtils；Lcom/ibm/usmi/services/updates/util/IUpdateUtils；）V
位于com.ibm.vmi.updates.appliance.util.HAApplianceUtils。（HAApplianceUtils.java:222）
位于com.ibm.vmi.updates.appliance.util.ApplianceUtilities（ApplianceUtilities.java:89）
在sun.reflect.NativeMethodAccessorImpl.invoke0（本机方法）处
位于sun.reflect.NativeMethodAccessorImpl.invoke（未知源）
在sun.reflect.DelegatingMethodAccessorImpl.invoke处（未知源）
位于java.lang.reflect.Method.invoke（未知源）
位于net.sf.cglib.proxy.Enhancer.setCallbackHelper（Enhancer.java:616）
位于net.sf.cglib.proxy.Enhancer.setThreadCallbacks（Enhancer.java:609）
位于net.sf.cglib.proxy.Enhancer.registerCallbacks（Enhancer.java:578）
位于org.easymock.internal.ClassProxyFactory.createProxy（ClassProxyFactory.java:194）
位于org.easymock.internal.MocksControl.createMock（MocksControl.java:60）
位于org.easymock.internal.MocksControl.createMock（MocksControl.java:98）
位于org.powermock.api.easymock.powermock.doCreateMock（powermock.java:2214）
位于org.powermock.api.easymock.powermock.doMock（powermock.java:2163）
位于org.powermock.api.easymock.powermock.createMock（powermock.java:76）
位于org.powermock.api.easymock.powermock.createPartialMock（powermock.java:762）
在com.ibm.vmi.updates.appliance.relationship.ApplianceRelationshipUtilTest.test_ValidateApplianceQS（ApplianceRelationshipUtilTest.java:77）上
在sun.reflect.NativeMethodAccessorImpl.invoke0（本机方法）处
位于sun.reflect.NativeMethodAccessorImpl.invoke（未知源）
在sun.reflect.DelegatingMethodAccessorImpl.invoke处（未知源）
位于java.lang.reflect.Method.invoke（未知源）
位于org.junit.internal.runners.TestMethod.invoke（TestMethod.java:66）
位于org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl$PowerMockJUnit44MethodRunner.runTestMethod（PowerMockJUnit44RunnerDelegateImpl.java:312）
位于org.junit.internal.runners.MethodRoadie$2.run（MethodRoadie.java:86）
位于org.junit.internal.runners.MethodRoadie.runbeforesthentestthenuter（MethodRoadie.java:94）
位于org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl$PowerMockJUnit44MethodRunner.executeTest（PowerMockJUnit44RunnerDelegateImpl.java:296）
位于org.powermock.modules.junit4.internal.impl.PowerMockJUnit47RunnerDelegateImpl$PowerMockJUnit47MethodRunner.executeTestInSuper（PowerMockJUnit47RunnerDelegateImpl.java:112）
位于org.powermock.modules.junit4.internal.impl.PowerMockJUnit47RunnerDelegateImpl$PowerMockJUnit47MethodRunner.executeTest（PowerMockJUnit47RunnerDelegateImpl.java:73）
位于org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl$PowerMockJUnit44MethodRunner.runbeforesthenTesttheAfter（PowerMockJUnit44RunnerDelegateImpl.java:284）
位于org.junit.internal.runners.MethodRoadie.runTest（MethodRoadie.java:84）
位于org.junit.internal.runners.MethodRoadie.run（MethodRoadie.java:49）
位于org.powermock.modules.junit4.internal.impl.powermockjunit44runnerdelegateinpl.invokeTestMethod（powermockjunit44runnerdelegateinpl.java:209）
位于org.powermock.modules.junit4.internal.impl.powermockjunit44runnerdelegateinpl.runMethods（powermockjunit44runnerdelegateinpl.java:148）
位于org.powermock.modules.junit4.internal.impl.powermockjunit44runnerdelegateinpl$1.run（powermockjunit44runnerdelegateinpl.java:122）
位于org.junit.internal.runners.ClassRoadie.runUnprotected（ClassRoadie.java:34）
位于org.junit.internal.runners.ClassRoadie.runProtected（ClassRoadie.java:44）
位于org.powermock.modules.junit4.internal.impl.powermockjunit44runnerdelegateinpl.run（powermockjunit44runnerdelegateinpl.java:120）
位于org.powermock.modules.junit4.common.internal.impl.JUnit4TestSuiteChunkerImpl.run（JUnit4TestSuiteChunkerImpl.java:102）
位于org.powermock.modules.junit4.common.internal.impl.AbstractCommonPowerMockRunner.run（AbstractCommonPowerMockRunner.java:53）
位于org.powermock.modules.junit4.PowerMockRunner.run（PowerMockRunner.java:42）
位于org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run（JUnit4TestReference.java:49）
位于org.eclipse.jdt.internal.junit.runner.TestExecution.run（TestExecution.java:38）
位于org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests（RemoteTestRunner.java:467）
位于org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests（RemoteTestRunner.java:683）
位于org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run（RemoteTestRunner.java:390）
位于org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main（RemoteTestRunner.java:197）

您可以尝试一下@SuppressStaticInitialization，看看这是否有帮助。

---

这似乎是Mockito和PowerMock之间的兼容性问题，因此我在这里留下了一个解决方案，以防其他人遇到相同的错误：

JUnit

JUnit 4.4或更高版本如果需要，请在pom.xml中添加以下内容 使用JUnit 4.4或更高版本：

   <properties>
     <powermock.version>1.7.1</powermock.version> 
   </properties>
   <dependencies>
    <dependency>
     <groupId>org.powermock</groupId>
     <artifactId>powermock-module-junit4</artifactId>
     <version>${powermock.version}</version>
     <scope>test</scope>    
    </dependency>    
    <dependency>
    <groupId>org.powermock</groupId>
    <artifactId>powermock-api-mockito</artifactId>
    <version>${powermock.version}</version>
    <scope>test</scope>    
   </dependency>

1.7.1 
org.powermock
我可以确认这些错误来自Mockito和PowerMock之间的版本不匹配。我们应该只在父模块
pom.xml
文件中定义依赖项版本，并在子模块
pom.xml
文件中引用它们

我在这里提供一个例子。提供的子
pom.xml
文件

<dependency>
  <groupId>org.mockito</groupId>
  <artifactId>mockito-core</artifactId>
  <version>${mockito.version}</version>
</dependency>

<dependency>
  <groupId>org.powermock</groupId>
  <artifactId>powermock-module-junit4</artifactId>
  <version>${powermock.version}</version>
  <scope>test</scope>
</dependency>

<dependency>
  <groupId>org.powermock</groupId>
  <artifactId>powermock-api-mockito2</artifactId>
  <version>${powermock.version}</version>
  <scope>test</scope>
</dependency>

哪一包
<dependency>
  <groupId>org.mockito</groupId>
  <artifactId>mockito-core</artifactId>
  <version>${mockito.version}</version>
</dependency>

<dependency>
  <groupId>org.powermock</groupId>
  <artifactId>powermock-module-junit4</artifactId>
  <version>${powermock.version}</version>
  <scope>test</scope>
</dependency>

<dependency>
  <groupId>org.powermock</groupId>
  <artifactId>powermock-api-mockito2</artifactId>
  <version>${powermock.version}</version>
  <scope>test</scope>
</dependency>

<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">

   ...........................................................

  <properties>
    <powermock.version>1.7.4</powermock.version>
    <powermock-api.version>2.0.2</powermock-api.version>
    <mockito.version>2.8.9</mockito.version>
  </properties>

  .............................

</project>