java - 尝试使用 Robolectric 测试 XML 解析时出错

Question

我正在使用 Robolectric 并尝试测试解析 XML 响应。我收到以下异常:

java.lang.NoClassDefFoundError: java/lang/AutoCloseable
    at android.util.Xml.parse(Xml.java:80)
    at com.test.app.network.parser.soap.BaseSoapParser.doParse(BaseSoapParser.java:57)
    at com.test.app.network.parser.soap.RecipeParser.parse(RecipeParser.java:57)
    at com.test.app.network.command.RecipeCommand.searchRecipes(RecipeCommand.java:64)
    at com.test.app.data.PrepopulateDB.prepopulateDB(PrepopulateDB.java:53)
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:45)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:42)
    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
    at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
    at org.robolectric.RobolectricTestRunner$2.evaluate(RobolectricTestRunner.java:230)
    at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:263)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:68)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:47)
    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.robolectric.RobolectricTestRunner$1.evaluate(RobolectricTestRunner.java:172)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:300)
    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: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)
Caused by: java.lang.ClassNotFoundException: java.lang.AutoCloseable
    at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
    at org.robolectric.bytecode.AsmInstrumentingClassLoader.loadClass(AsmInstrumentingClassLoader.java:100)
    at android.util.Xml.$$robo$$Xml_e8aa_parse(Xml.java:80)
    at android.util.Xml.parse(Xml.java)
    at com.test.app.network.parser.soap.BaseSoapParser.doParse(BaseSoapParser.java:57)
    at com.test.test.app.network.parser.soap.RecipeParser.parse(RecipeParser.java:57)
    at com.test.app.network.command.RecipeCommand.searchRecipes(RecipeCommand.java:64)
    at com.test.app.data.PrepopulateDB.prepopulateDB(PrepopulateDB.java:53)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    ... 22 more

问题是“AutoCloseable”仅在 Java 7 中添加，并且由于 Android 使用 Java 6，我可以理解为什么找不到该类 - 我们将不胜感激。

图书馆:

robolectric-2.3-20140204.032758-112-jar-with-dependencies.jar

android-all-4.4_r1-robolectric-0.jar /android-all-4.3_r2-robolectric-0.jar

更新:我使用 JDK 6 和 Target API 18 对此进行了测试，结果相同。

更新 2:问题的根源似乎是这个类:org.apache.harmony.xml.ExpatReader 它正在使用 AutoClosable，这在 Java 6 或 Android API 18 上不可用。

Answer 1

实际上这个接口(interface)在Android SDK中:https://developer.android.com/reference/java/lang/AutoCloseable.html

在 API 级别 19 中添加

19级之前，它就在那里，只是“隐藏”了而已。