我将TestNG更新为6.14.3并将Selenium更新为3.13.0后,收到上述Json异常。我正在使用ChromeDriver()实现自动化。以下是有关我的代码的简要说明:
@BeforeSuite: System.setProperty("webdriver.chrome.driver", "path to chrome driver"); @BeforeMethod: driver = new ChromeDriver(); @AfterMethod: driver.quit();
我以前的版本分别是TestNG和Selenium的6.11.0和3.7.1。
当代码尝试启动WebDriver会话时,将出现异常。
完整的例外是:
java.lang.NoSuchMethodError: org.openqa.selenium.json.JsonOutput.write(Ljava/lang/Object;Ljava/lang/reflect/Type;)Lorg/openqa/selenium/json/JsonOutput; at org.openqa.selenium.remote.NewSessionPayload.writeTo(NewSessionPayload.java:247) at org.openqa.selenium.remote.ProtocolHandshake.createSession(ProtocolHandshake.java:69) at org.openqa.selenium.remote.HttpCommandExecutor.execute(HttpCommandExecutor.java:136) at org.openqa.selenium.remote.service.DriverCommandExecutor.execute(DriverCommandExecutor.java:83) at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:548) at org.openqa.selenium.remote.RemoteWebDriver.startSession(RemoteWebDriver.java:212) at org.openqa.selenium.remote.RemoteWebDriver.<init>(RemoteWebDriver.java:130) at org.openqa.selenium.chrome.ChromeDriver.<init>(ChromeDriver.java:181) at org.openqa.selenium.chrome.ChromeDriver.<init>(ChromeDriver.java:168) at org.openqa.selenium.chrome.ChromeDriver.<init>(ChromeDriver.java:123) 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:498) at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:124) at org.testng.internal.MethodInvocationHelper.invokeMethodConsideringTimeout(MethodInvocationHelper.java:59) at org.testng.internal.Invoker.invokeConfigurationMethod(Invoker.java:458) at org.testng.internal.Invoker.invokeConfigurations(Invoker.java:222) at org.testng.internal.Invoker.invokeMethod(Invoker.java:523) at org.testng.internal.Invoker.invokeTestMethod(Invoker.java:719) at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:989) at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:125) at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:109) at org.testng.TestRunner.privateRun(TestRunner.java:648) at org.testng.TestRunner.run(TestRunner.java:505) at org.testng.SuiteRunner.runTest(SuiteRunner.java:455) at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:450) at org.testng.SuiteRunner.privateRun(SuiteRunner.java:415) at org.testng.SuiteRunner.run(SuiteRunner.java:364) at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52) at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:84) at org.testng.TestNG.runSuitesSequentially(TestNG.java:1208) at org.testng.TestNG.runSuitesLocally(TestNG.java:1137) at org.testng.TestNG.runSuites(TestNG.java:1049) at org.testng.TestNG.run(TestNG.java:1017) at org.testng.remote.AbstractRemoteTestNG.run(AbstractRemoteTestNG.java:114) at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:251) at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:77) Suppressed: org.openqa.selenium.json.JsonException: Attempting to close incomplete json stream Build info: version: '3.13.0', revision: '2f0d292', time: '2018-06-25T15:24:21.231Z' Driver info: driver.version: ChromeDriver at org.openqa.selenium.json.JsonOutput.close(JsonOutput.java:263) at org.openqa.selenium.remote.NewSessionPayload.writeTo(NewSessionPayload.java:270)
此错误信息:
java.lang.NoSuchMethodError: org.openqa.selenium.json.JsonOutput.write(Ljava/lang/Object;Ljava/lang/reflect/Type;)Lorg/openqa/selenium/json/JsonOutput; . Suppressed: org.openqa.selenium.json.JsonException: Attempting to close incomplete json stream
…表示在JVM尝试转义某些字符时引发了 java.lang.NoSuchMethodError 。
在缺少以下与您的 测试环境 有关的信息的情况下,很难分析错误:
但是此错误来自以下源代码:
public void close() { if (appendable instanceof Closeable) { try { ((Closeable) appendable).close(); } catch (IOException e) { throw new JsonException(e); } } if (!(stack.getFirst() instanceof Empty)) { throw new JsonException("Attempting to close incomplete json stream"); } }
可能的原因可能是以下之一:
* Introduced our own JSON parser and outputter, allowing GSON to be removed from our dependencies.
mvn clean
mvn install
mvn test