在使用 webdriver 開啟瀏覽器的時候，丟擲了一個異常：

Starting ChromeDriver 84.0.4147.30 (48b3e868b4cc0aa7e8149519690b6f6949e110a8-refs/branch-heads/4147@{#310}) on port 15911
Only local connections are allowed.
Please see https://chromedriver.chromium.org/security-considerations for suggestions on keeping ChromeDriver safe.
ChromeDriver was started successfully.
Exception 
 
in thread "main" org.openqa.selenium.WebDriverException: Timed out waiting for driver server to start.
Build info: version: '3.141.59', revision: 'e82be7d358', time: '2018-11-14T08:17:03'
System info: host: 'USERUQI-HIIH0SU', ip: '10.10.40.23', os.name: 'Windows 7', os.arch: 'amd64', os.version: '6.1', java.version: '
 
1.8.0_171'
Driver info: driver.version: ChromeDriver
    at org.openqa.selenium.remote.service.DriverService.waitUntilAvailable(DriverService.java:202)
    at org.openqa.selenium.remote.service.DriverService.start(DriverService.java:188)
    at org.openqa.selenium.remote.service.DriverCommandExecutor.execute(DriverCommandExecutor.java:
 
79)
    at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:552)
    at org.openqa.selenium.remote.RemoteWebDriver.startSession(RemoteWebDriver.java:213)
    at org.openqa.selenium.remote.RemoteWebDriver.<init>(RemoteWebDriver.java:131)
    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:157)
    at com.pan.spider.spider_business.Test.main(Test.java:31)
Caused by: org.openqa.selenium.net.UrlChecker$TimeoutException: Timed out waiting for [http://localhost:15911/status] to be available after 20039 ms
    at org.openqa.selenium.net.UrlChecker.waitUntilAvailable(UrlChecker.java:100)
    at org.openqa.selenium.remote.service.DriverService.waitUntilAvailable(DriverService.java:197)
    ... 9 more
Caused by: java.util.concurrent.TimeoutException
    at java.util.concurrent.FutureTask.get(FutureTask.java:205)
    at com.google.common.util.concurrent.SimpleTimeLimiter.callWithTimeout(SimpleTimeLimiter.java:156)
    at org.openqa.selenium.net.UrlChecker.waitUntilAvailable(UrlChecker.java:75)
    ... 10 more

排查流程：

1：確認瀏覽器版本和chromdriver.exe 版本是否對應，本地瀏覽器版本

訪問：https://npm.taobao.org/mirrors/chromedriver/

下載對應的版本依然報錯，更換方法

2：在瀏覽器訪問http://localhost:15911/status ，有對應的返回值

能夠訪問成功，並沒有超時，懷疑可能是hosts配置有誤

檢視自己的hosts配置檔案，發現有 localhost 對應的IP有兩個，這裡不方便發出圖片，只留下 127.0.0.1 的配置，其他配置刪除，問題解決