Question

我陷入了空指针异常问题。这些测试是通过JUnit运行的，但是我没有设法正确调试并找出原因。

测试课程

CASE
    WHEN hits.dataSource = 'app' THEN 'YES'
    ELSE 'NO'
  END AS Application

Excel Action（Webdriver部分）

ExcelActions excelActions;
Excel_Import excel_import;

@Test
public void addResultsToExcel() throws InterruptedException {
    searchAfterLogin(); // works fine until the next method
    excelActions.addToExcel();  //thats where NPE begins...
    excel_import.importExcel(excelActions.addToExcel());

}

Excel导入类

public class ExcelActions extends BaseAction {

public ExcelActions(WebDriver driver) { super(driver); }

public Map<String, Object[]> addToExcel(){

    String beforeXpath_pageName = "//*[@id=\"mw-content- 
text\"]/div[3]/ul/li[";
    String afterXpath_pageName = "]/div[1]/a";

    int rowCount ;
    rowCount = 20;
    Map<String, Object[]> data = new TreeMap<String, Object[]>();

    for(int i = 1; i <= rowCount; i++){

        String actualXpath_pageName = beforeXpath_pageName + i + 
afterXpath_pageName;
        String pageName = 
driver.findElement(By.xpath(actualXpath_pageName)).getText();
        System.out.println(pageName);

        data.put("" + i, new Object[]{pageName});
    }
    return data;
}
}

你们能看看吗？

Answer 1

字段：

ExcelActions excelActions;

未初始化。您应该为其分配一个ExcelActions实例，例如：

ExcelActions excelActions = new ExcelActions(someWebDriverMock);

在类中声明字段是不够的。您需要为其分配一些特定的对象，否则将为null。

空指针异常将Web元素导入Excel

1 个答案: