ClassCastException: java.lang.String 不能转换为 Ljava.lang.String
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ClassCastException: java.lang.String cannot be cast to Ljava.lang.String
提问by Shari
I get this error->
我收到此错误->
java.lang.ClassCastException: java.lang.String cannot be cast to [Ljava.lang.String;
From the code pasted below.
从下面粘贴的代码。
public class LoginAttemps extends Setup {
public void testSearchCountry() throws Exception {
driver.get("http://www.wikipedia.org/wiki/Main_Page");
ReadExcelDemo readXls = new ReadExcelDemo();
List dataList = readXls.getData();
for (int i = 1; i < dataList.size(); i++) {
String[] testCase = new String[5];
String[] test = (String[]) dataList.get(i);
String countryName = test[0];
String countryDesc = test[1];
driver.findElement(By.id("searchInput")).clear();
driver.findElement(By.id("searchInput")).sendKeys(countryName);
driver.findElement(By.id("searchButton")).click();
String str = driver.findElement(
By.xpath("//h1[@id='firstHeading']/span")).getText();
System.out.println(countryDesc);
Assert.assertTrue(str.contains(countryName));
}
}
}
I think the issue is with String[] test = (String[]) dataList.get(i);
我认为问题在于 String[] test = (String[]) dataList.get(i);
But I am not sure about resolving this exception.. Any clues?
但我不确定解决这个异常..有什么线索吗？
回答by GhostCat
You can not cast "String" into "Array of Strings".
您不能将“字符串”转换为“字符串数组”。
You can only put a string into a slot within an array.
您只能将字符串放入数组中的插槽中。
What you can do is:
你可以做的是：
String theString = "whatever";
String[] myStrings = { theString };
回答by Sasha
Looking at the code, I believe you trying to convert List to an Array, therefore your "issue line" should be the following:
查看代码，我相信您尝试将List转换为 Array，因此您的“问题行”应如下所示：
String[] test = (String[]) dataList.toArray(new String[dataList.size]);
回答by gautam
Cause: element at "i" position is of type string. However you are trying to cast it into array of string.
原因：“i”位置的元素是字符串类型。但是，您正在尝试将其转换为字符串数组。
Direct Solution: remove [] from both sides i.e. change from:
直接解决方案：从两侧删除 [] 即从：
String[] test = (String[]) dataList.get(i);
To:
到：
String test = (String) dataList.get(i);
This will work if your List will not contain array of any type.
如果您的 List 不包含任何类型的数组，这将起作用。
回答by Shari
thankyou Guys. Yeah I am trying to cast a List Objects to String Arrays. I found the issues. Corrected code.
谢谢你们。是的，我正在尝试将列表对象转换为字符串数组。我发现了问题。更正的代码。
public void testSearchCountry() throws Exception {
driver.get("http://www.wikipedia.org/wiki/Main_Page");
ReadExcelDemo readXls = new ReadExcelDemo();
List dataList = readXls.getData();
String[] test = new String[dataList.size()];
for (int i = 1; i < dataList.size(); i++) {
String[] testCase = new String[5];
test[i] = dataList.get(i).toString();
String countryName = test[0];
String countryDesc = test[1];
driver.findElement(By.id("searchInput")).clear();
driver.findElement(By.id("searchInput")).sendKeys(countryName);
driver.findElement(By.id("searchButton")).click();
String str = driver.findElement(
By.xpath("//h1[@id='firstHeading']/span")).getText();
System.out.println(countryDesc);
Assert.assertTrue(str.contains(countryName));
}
}
and it worked.
它奏效了。
