eclipse Selenium webdriver Unsupported major.minor version 51.0 - Java 版本问题
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Selenium webdriver Unsupported major.minor version 51.0 - Java version issue
提问by user3861559
I am setting selenium web driver. I set it up as Maven project.
我正在设置硒网络驱动程序。我将它设置为 Maven 项目。
My basic "Hello world" equivalent tests that are not using webdriver is class is working fine. How ever when I tried using the code breaks and I get the following error.
我不使用 webdriver 的基本“Hello world”等效测试是类工作正常。当我尝试使用代码中断时，我如何收到以下错误。
WebDriver driver = new FirefoxDriver();
java.lang.UnsupportedClassVersionError: org/openqa/selenium/firefox/FirefoxDriver : Unsupported major.minor version 51.0
java.lang.UnsupportedClassVersionError: org/openqa/selenium/firefox/FirefoxDriver: 不支持major.minor 版本51.0
From what I understand it is a java version issue. So, I went ahead and installed Java 1.8.
据我了解，这是一个java版本问题。所以，我继续安装了 Java 1.8。
When I run java -versionI get this:
当我跑步时，java -version我得到了这个：
java version "1.8.0_77" Java(TM) SE Runtime Environment (build 1.8.0_77-b03) Java HotSpot(TM) 64-Bit Server VM (build 25.77-b03, mixed mode)
java 版本“1.8.0_77”Java(TM) SE 运行时环境（构建 1.8.0_77-b03）Java HotSpot(TM) 64 位服务器 VM（构建 25.77-b03，混合模式）
But still my code breaks.
但我的代码仍然中断。
My bash profile still reads java 1.6 export
PATH="/Users/pathToPerForce/p4/JavaLib/main/build/apache-ant-1.6.3/bin:/Applications/p4:${PATH}When I set up this as Maven project I could right click on project and "build as" maven build. Now that is failing too.
我的 bash 配置文件仍然读取 java 1.6 export
PATH="/Users/pathToPerForce/p4/JavaLib/main/build/apache-ant-1.6.3/bin:/Applications/p4:${PATH}当我将它设置为 Maven 项目时，我可以右键单击项目并“构建为”maven 构建。现在这也失败了。
I am fairly new to java and selenium and not able to comprehend this is good depth. Any help in fixing this is much appreciated.
我对 java 和 selenium 相当陌生，无法理解这是很好的深度。非常感谢解决此问题的任何帮助。
采纳答案by Andrew Regan
Just to sum up the comments: the analysis was that a 1.6 JRE was trying to run 1.7 (version 51) classes.
总结一下评论：分析是 1.6 JRE 试图运行 1.7（版本 51）类。
It's fine to combine multiple JRE/JDK versions provided that older versions don't try to run classes created by a newer (major) version.
如果旧版本不尝试运行由较新（主要）版本创建的类，则可以组合多个 JRE/JDK 版本。
The solution was simply to change the Eclipse project's Java Build Path, replacing the Java SE 6 [1.6.0_65]entry that was there with a 1.7 or 1.8 version.
解决方案只是更改 Eclipse 项目的Java Build Path，用Java SE 6 [1.6.0_65]1.7 或 1.8 版本替换那里的条目。
回答by preetam kumar samal
I too was facing the same issue but with chrome driver. error: ...Unsupported major.minor version 51.0 All I did is, I installed 1.8 jre, Configures it in the BUILD PATH and the issue got resolved.
我也面临同样的问题，但使用 chrome 驱动程序。错误：...不支持的major.minor 版本51.0 我所做的只是，我安装了1.8 jre，在BUILD PATH 中配置它，问题得到解决。
RCA: The dependency jars I was using is configurable with latest version of jre.
RCA：我使用的依赖 jar 可以使用最新版本的 jre 进行配置。
回答by Swati Patel
If you have tried with all the options like updating the PATH variable, changing the eclipse properties in project - > properties -> java compiler - > JDK Compliance and then correct the JRE version here still facing the same issue then try to check the versions of reference jar. In my case I was trying to write code for selenium webdriver (Standalone server + client). I was getting the issue with version 3. on words. I have degraded the version to 2.5 and it worked fine. Also, check the version of java compiler and java with below command. Both should be same javac - version :- Compiler version java - version :- java version
如果您尝试了所有选项，例如更新 PATH 变量、更改项目中的 eclipse 属性 -> 属性 -> java 编译器 -> JDK 合规性，然后在此处更正 JRE 版本仍然面临同样的问题，然后尝试检查版本参考罐子。就我而言，我试图为 selenium webdriver（独立服务器 + 客户端）编写代码。我遇到了版本 3. 关于文字的问题。我已经将版本降级到 2.5 并且运行良好。另外，使用以下命令检查 java 编译器和 java 的版本。两者应该是相同的 javac - version :- 编译器版本 java - version :- java version
