javascript 量角器给出“无法启动 WebDriver 会话”错误
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Protractor gives "Unable to start a WebDriver session" error
提问by cgsd
I already have started a server with webdriver-manager start, but I get this error when I try to run protractor:
我已经用 启动了一个服务器webdriver-manager start，但是当我尝试运行量角器时出现此错误：
Using the selenium server at http://127.0.0.1:4444/wd/hub
[launcher] Running 1 instances of WebDriver
ERROR - Unable to start a WebDriver session.
C:\...\npm\node_modules\protractor\node_modules\selenium-webdriver\lib\atoms\error.js:113
var template = new Error(this.message);
^
UnknownError: unknown error: cannot find Chrome binary
My config file looks like this:
我的配置文件如下所示：
exports.config = {
specs: [
'test/*.js'
],
capabilities: {
'browserName': 'chrome'
},
seleniumAddress: 'http://127.0.0.1:4444/wd/hub'
};
I have also tried pointing to the binary in the capabilities object as well as adding chromeDriver and seleniumServerJar keys to no avail. Any ideas?
我还尝试指向功能对象中的二进制文件以及添加 chromeDriver 和 seleniumServerJar 键无济于事。有任何想法吗？
回答by alecxe
According to the relevant github issue, the problem is that chromedrivercannot find chromebrowser executeable- on different operating systems it searches for it in different places.
根据相关的github issue，问题是chromedriver找不到chrome浏览器可执行文件——在不同的操作系统上，它在不同的地方搜索。
You need to either have chrome installedwhere chromedriverexpects it to be, or specify the path to the chromeexecuteable in the binarysetting:
您需要将chrome 安装在chromedriver预期的位置，或者chrome在binary设置中指定可执行文件的路径：
capabilities: {
"browserName": "chrome",
"chromeOptions": {
binary: "D:/Program Files/Chrome/chrome.exe",
args: [],
extensions: [],
}
},
回答by Shekhar Sahu
I generated code using JHipster and had similar error where e2e was not working. I provided binary path. But upon npm run e2ethe browser opened and displayed data;in the address bar.
我使用 JHipster 生成了代码，并且在 e2e 无法正常工作时遇到了类似的错误。我提供了二进制路径。但是在npm run e2e浏览器打开并显示data;在地址栏中。
I shuffled and provided the binary at the end of chromeOptions after the args and it worked.
我在 args 之后的 chromeOptions 末尾改组并提供了二进制文件并且它起作用了。
capabilities: {
browserName: 'chrome',
chromeOptions: {
args: process.env.JHI_E2E_HEADLESS
? [ "--headless", "--disable-gpu", "--window-size=800,600" ]
: [ "--disable-gpu", "--window-size=800,600" ],
binary: "C:/Program Files (x86)/Google/Chrome/Application/chrome.exe"
}
}
Note: I also had to update the chrome version when an unsupported webdriver version error occurred.
注意：当发生不受支持的 webdriver 版本错误时，我还必须更新 chrome 版本。
