小贝子编程

org.openqa.selene.json.JsonOutput.write(Ljava/lang/Object;)L



我正在使用Spring Boot 2和Appium从头开始创建一个新的测试框架。为了编写测试，我使用了JUnit，它已经包含在Spring Boot的spring-boot-starter-testPOM中，还有许多其他的。我在我的POM中添加了Appium，现在看起来是这样的：

<?xml version="1.0" encoding="UTF-8"?>
<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">
<modelVersion>4.0.0</modelVersion>
<groupId>com.automationexperiment</groupId>
<artifactId>one</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>demo</name>
<description>Demo project for Spring Boot</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.6.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<!-- https://mvnrepository.com/artifact/io.appium/java-client -->
<dependency>
<groupId>io.appium</groupId>
<artifactId>java-client</artifactId>
<version>6.1.0</version>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>

至于我的测试，我有一个DriverSetup类，看起来像这样：

@RunWith(SpringRunner.class)
@SpringBootTest
public class DriverSetup {
protected AndroidDriver<AndroidElement> driver;
@Before
public void setUp() throws MalformedURLException {
DesiredCapabilities capabilities = new DesiredCapabilities();
capabilities.setCapability(MobileCapabilityType.PLATFORM_NAME, "Android");
capabilities.setCapability(MobileCapabilityType.PLATFORM_VERSION, "6.0.1");
capabilities.setCapability(MobileCapabilityType.DEVICE_NAME, "DeviceName");
capabilities.setCapability(AndroidMobileCapabilityType.APP_PACKAGE, "com.google.android.gm");
capabilities.setCapability(AndroidMobileCapabilityType.APP_ACTIVITY, ".ConversationListActivityGmail");
URL myUrl = new URL("http://127.0.0.1:4723/wd/hub");
this.driver = new AndroidDriver<AndroidElement>(myUrl, capabilities);
this.driver.manage().timeouts().implicitlyWait(5, TimeUnit.SECONDS);
}
}

最后，我有另一个从DriverSetup扩展的类，以确保在每次测试之前完成驱动程序初始化。它看起来像这样：

@RunWith(SpringRunner.class)
@SpringBootTest
public class FirstTryTest extends DriverSetup {
public FirstTryTest() { }
@Test
public void test() {
System.out.println("test");
}
}

我只是想确保我能在FirstTryTest中达到测试，但每次代码用URL和DesiredCapabilities初始化AndroidDriver时，我都会得到以下错误：

java.lang.NoSuchMethodError: org.openqa.selenium.json.JsonOutput.write(Ljava/lang/Object;)Lorg/openqa/selenium/json/JsonOutput;
at io.appium.java_client.remote.NewAppiumSessionPayload.writeTo(NewAppiumSessionPayload.java:265)
at io.appium.java_client.remote.AppiumCommandExecutor$1.createSession(AppiumCommandExecutor.java:175)
at io.appium.java_client.remote.AppiumCommandExecutor.createSession(AppiumCommandExecutor.java:209)
at io.appium.java_client.remote.AppiumCommandExecutor.execute(AppiumCommandExecutor.java:231)
at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:601)
at io.appium.java_client.DefaultGenericMobileDriver.execute(DefaultGenericMobileDriver.java:42)
at io.appium.java_client.AppiumDriver.execute(AppiumDriver.java:1)
at io.appium.java_client.android.AndroidDriver.execute(AndroidDriver.java:1)
at org.openqa.selenium.remote.RemoteWebDriver.startSession(RemoteWebDriver.java:219)
at org.openqa.selenium.remote.RemoteWebDriver.<init>(RemoteWebDriver.java:142)
at io.appium.java_client.DefaultGenericMobileDriver.<init>(DefaultGenericMobileDriver.java:38)
at io.appium.java_client.AppiumDriver.<init>(AppiumDriver.java:84)
at io.appium.java_client.AppiumDriver.<init>(AppiumDriver.java:94)
at io.appium.java_client.android.AndroidDriver.<init>(AndroidDriver.java:93)
at com.automationexperiment.one.driversetup.DriverSetup.setUp(DriverSetup.java:31)
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.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:24)
at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:75)
at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:86)
at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:84)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:251)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:97)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:190)
at com.microsoft.java.test.runner.JUnit4TestReference.run(JUnit4TestReference.java:51)
at com.microsoft.java.test.runner.CustomizedJUnitCoreRunner.run(CustomizedJUnitCoreRunner.java:45)
at com.microsoft.java.test.runner.JUnitLauncher.execute(JUnitLauncher.java:26)
at com.microsoft.java.test.runner.JUnitLauncher.main(JUnitLauncher.java:15)
Suppressed: java.io.IOException: Incomplete document
at com.google.gson.stream.JsonWriter.close(JsonWriter.java:559)
at org.openqa.selenium.json.JsonOutput.close(JsonOutput.java:39)
at io.appium.java_client.remote.NewAppiumSessionPayload.writeTo(NewAppiumSessionPayload.java:288)
... 41 more

我试过使用旧版本的Appium(5.0.4(，但没有成功。我想强调一下StackTrace的结尾。提到了IOException，而在其他有类似错误的问题中，脚本由于org.openqa.selene.json.JsonException`.

此错误消息：

java.lang.NoSuchMethodError: org.openqa.selenium.json.JsonOutput.write(Ljava/lang/Object;)Lorg/openqa/selenium/json/JsonOutput;
.
Suppressed: java.io.IOException: Incomplete document

意味着java.lang.NoSuchMethodError是由JVM引发的。

您已经提到使用Appium v5.0.4的旧版本

在没有以下与测试环境相关的信息的情况下，很难分析错误：

  • Appium服务器版本
  • 桌面操作系统/版本
  • 移动平台/测试中的版本
  • 真实设备或模拟器

根据讨论，在使用AndroidDriver和iOS运行Appium脚本时出错：无法用6.0.0初始化iOS功能。此错误似乎来自NumberCoercer类，该类在Selenium RemoteDriver v3.12.0中被修改为接受端口为Integer，而之前它接受String。

解决方案

  • 更新到最新的Appium Java Client v6.1.0
  • 更新至最新版本(至少(Selenium v3.12.0

  • @SrinivasanTarget提到了一个重要方面：

    • Appium的Java客户端附带Selenium依赖项，因此我们不建议排除Selenium并添加单独的依赖项，因为它有时可能会引发冲突。

在这里，您可以找到关于java.lang.NoSuchMethodError:org.openqa.seleng.json.JsonOutput.write(Ljava/lang/Object；Ljava/lang/reflect/Type；(的相关讨论

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