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java - org.openqa.selenium.json.JsonOutput.write(Ljava/lang/Object;Ljava/lang/reflect/Type;) 由于 JsonException : Attempting to close incomplete json stream

转载 作者:行者123 更新时间:2023-12-02 01:54:16 30 4
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在我将 TestNG 更新到 6.14.3 并将 Selenium 更新到 3.13.0 后,我收到上述 Json 异常。我正在使用 ChromeDriver() 进行自动化。这是关于我的代码的简要想法:

@BeforeSuite:
System.setProperty("webdriver.chrome.driver", "path to chrome driver");

@BeforeMethod:
driver = new ChromeDriver();

@AfterMethod:
driver.quit();

我以前的 TestNG 和 Selenium 版本分别是 6.11.0 和 3.7.1。

当代码尝试启动 WebDriver session 时,会出现异常。

完整的异常(exception)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)

最佳答案

此错误消息:

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

...暗示在 JVM 尝试转义某些字符时引发了 java.lang.NoSuchMethodError

如果缺乏与您的测试环境相关的以下信息,分析错误非常困难:

  • selenium-server-standalone-3.13.0.jarselenium-java-3.13.0 客户端。
  • JARMavenGradle

但是这个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");
}
}

原因

可能的原因可能是以下之一:

  • 通过selenium-server-standalone-3.13.0.jarselenium-java-3.13.0存在多个Selenium相关jar客户端 jar。
  • 通过 JARMaven 和/或 Gradle 存在多个Selenium 相关 jar
  • 存在 gson-2.8.2.jar 作为 Release Notes of Selenium v3.13.0明确提到:

    * Introduced our own JSON parser and outputter, allowing GSON to be removed from our dependencies.

解决方案

  • 如果使用手动下载的 JAR 文件,请删除所有与 Selenium 相关的外部 JAR 并添加新下载的 JAR。
  • 如果使用 MavenGradle,请执行以下步骤:
    • 通过 CLI:mvn clean(清除以前的依赖项)
    • 通过 CLI:mvn install(安装必要的依赖项)
    • 通过 CLI:mvn test(执行测试套件)

关于java - org.openqa.selenium.json.JsonOutput.write(Ljava/lang/Object;Ljava/lang/reflect/Type;) 由于 JsonException : Attempting to close incomplete json stream,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/57408342/

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