线程“main"中的异常java.lang.IllegalStateException:驱动程序可执行文件的路径必须由:系统属性设置-Java问题

Exception in thread quot;mainquot; java.lang.IllegalStateException:The path to the driver executable must be set by the : system property(线程“main中的异常java.lang.IllegalStateException:驱动程序可执行文件的路径必须由:系统属性设置)

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问题描述

线程main"中的异常 java.lang.IllegalStateException :驱动程序可执行文件的路径必须由 webdriver.chrome.driver 系统属性设置；有关详细信息，请参阅 https://github.com/SeleniumHQ/selenium/wiki/ChromeDriver.最新版本可从 http://chromedriver.storage.googleapis.com/index.html 下载在 com.google.common.base.Preconditions.checkState(Preconditions.java:199)在 org.openqa.selenium.remote.service.DriverService.findExecutable(DriverService.java:109)在 org.openqa.selenium.chrome.ChromeDriverService.access$0(ChromeDriverService.java:1)在 org.openqa.selenium.chrome.ChromeDriverService$Builder.findDefaultExecutable(ChromeDriverService.java:137) 在 org.openqa.selenium.remote.service.DriverService$Builder.build(DriverService.java:296)在 org.openqa.selenium.chrome.ChromeDriverService.createDefaultService(ChromeDriverService.java:88) 在 org.openqa.selenium.chrome.ChromeDriver.<init>(ChromeDriver.java:116)在 practice_locators.DatePicker.main(DatePicker.java:11)

这是我的代码:

包practice_locators；导入 org.openqa.selenium.WebDriver；导入 org.openqa.selenium.chrome.ChromeDriver；公共类 DatePicker {公共静态无效主要(字符串[]参数){WebDriver driver = new ChromeDriver();System.setProperty("WebDriver.Chrome.driver", "E:\chromedriver.exe");driver.get("https://www.google.com");}}

解决方案

错误说明了一切:

线程main"中的异常 java.lang.IllegalStateException :驱动程序可执行文件的路径必须由 webdriver.chrome.driver 系统属性设置；有关详细信息，请参阅 https://github.com/SeleniumHQ/selenium/wiki/ChromeDriver.最新版本可从 http://chromedriver.storage.googleapis.com/index.html 下载在 com.google.common.base.Preconditions.checkState(Preconditions.java:199)

错误中的以下短语暗示包含 webdriver.chrome.driver

的行中存在错误

错误可能是以下任何一种:

系统类方法 setProperty()(包括序列):
```
System.setProperty()
```
<块引用>
这一行应该是您脚本中的第一行.
指定的键 :
```
"WebDriver.Chrome.driver"
```
值字段出错:
```
"E:\chromedriver.exe"
```
<块引用>
您必须通过以下任一选项传递 WebDriver 的绝对路径:
- 转义反斜杠 (\) 例如"C:\path\to\chromedriver.exe"
- 单正斜杠 (/) 例如"C:/path/to/chromedriver.exe"

您的代码似乎有如下两个问题:

第一个问题是指定 Key 而不是 "WebDriver.Chrome.driver" 应该是 "webdriver.chrome.driver"如下:
```
System.setProperty("webdriver.chrome.driver", "E:\chromedriver.exe");
```

第二个问题是在序列提到 Key "webDriver.chrome.driver" 在你的程序中应该在 WebDriver driver = new ChromeDriver(); 之前如下:

System.setProperty("WebDriver.Chrome.driver", "E:\chromedriver.exe");WebDriver driver = new ChromeDriver();driver.get("https://www.google.com");

Exception in thread "main" java.lang.IllegalStateException : The path to the driver executable must be set by the webdriver.chrome.driver system property; for more information, see https://github.com/SeleniumHQ/selenium/wiki/ChromeDriver. The latest version can be downloaded from http://chromedriver.storage.googleapis.com/index.html  
at com.google.common.base.Preconditions.checkState(Preconditions.java:199)  
at org.openqa.selenium.remote.service.DriverService.findExecutable(DriverService.java:109)  
at org.openqa.selenium.chrome.ChromeDriverService.access$0(ChromeDriverService.java:1)  
at org.openqa.selenium.chrome.ChromeDriverService$Builder.findDefaultExecutable(ChromeDriverService.java:137)   at org.openqa.selenium.remote.service.DriverService$Builder.build(DriverService.java:296)   
at org.openqa.selenium.chrome.ChromeDriverService.createDefaultService(ChromeDriverService.java:88)     at org.openqa.selenium.chrome.ChromeDriver.<init>(ChromeDriver.java:116)    
at practise_locators.DatePicker.main(DatePicker.java:11)

Here is my code:

package practise_locators;

import org.openqa.selenium.WebDriver;
import org.openqa.selenium.chrome.ChromeDriver;

public class DatePicker {

    public static void main(String[] args){
        WebDriver driver = new ChromeDriver();
        System.setProperty("WebDriver.Chrome.driver", "E:\chromedriver.exe");
        driver.get("https://www.google.com");
    }

}

解决方案

The error says it all :

Exception in thread "main" java.lang.IllegalStateException : The path to the driver executable must be set by the webdriver.chrome.driver system property; for more information, see https://github.com/SeleniumHQ/selenium/wiki/ChromeDriver. The latest version can be downloaded from http://chromedriver.storage.googleapis.com/index.html  
at com.google.common.base.Preconditions.checkState(Preconditions.java:199)

The following phrases from the error implies that there is an error in the line containing webdriver.chrome.driver

The error can be either of the following :

Error in the System Class Method setProperty()(including sequence) :
```
System.setProperty()
```
This line should be the very first line in your script.
Error in the specified Key :
```
"WebDriver.Chrome.driver"
```
Error in the Value field :
```
"E:\chromedriver.exe"
```
You have to pass the absolute path of the WebDriver through either of the following options :
- Escaping the back slash (\) e.g. "C:\path\to\chromedriver.exe"
- Single forward slash (/) e.g. "C:/path/to/chromedriver.exe"

Your code seems to be having two issues as follows :

First issue is in specifying the Key which instead of "WebDriver.Chrome.driver" should have been "webdriver.chrome.driver" as follows :
```
System.setProperty("webdriver.chrome.driver", "E:\chromedriver.exe");
```
Second issue is in the sequence of mentioning the Key "webDriver.chrome.driver" in your program which should be before WebDriver driver = new ChromeDriver(); as follows :
```
System.setProperty("WebDriver.Chrome.driver", "E:\chromedriver.exe");
WebDriver driver = new ChromeDriver();
driver.get("https://www.google.com");
```