Question

关于我遇到的问题，我只是有一个简单的问题。如果没有Webelement，我尝试将字符串值设置为id = 1，否则该字符串就是Webelement值（使用id desc mfr group 0 0 This is text ABC 0 1 1 John Doe ABC DEF 0 2 2 John Doe DEF 0 3 3 Something JKL GHI 1 4 4 Something more JKL 1）。但是，我似乎无法在 if and else 语句中使用这些值。我该怎么做呢？

这是我的代码

"0"

Answer 1

使用以下代码：

WebDriverWait wait = new WebDriverWait(Drivers.getDriver(), 10);
wait.until(ExpectedConditions.visibilityOf(countdownLabel));

String players_in_game = "0";
if(num_of_players_in_game.isDisplayed()){
   players_in_game = num_of_players_in_game.getText();   
}

System.out.println(players_in_game);
int first_num = Integer.parseInt(players_in_game);

或者：

String players_in_game = num_of_players_in_game.isDisplayed() ? num_of_players_in_game.getText() : "0";

或者：

List<WebElements> num_of_players_in_game = driver.findElements(By....);
String players_in_game = num_of_players_in_game.size()==0 ? "0": num_of_players_in_game.get(0).getText();

Answer 2

由于您已经在代码的第一行中将该变量声明为类成员，因此只需删除String即可不将其重新声明为局部变量，而应使用字段：

if(!num_of_players_in_game.isDisplayed()){
    players_in_game = "0";
} else {
    players_in_game = num_of_players_in_game.getText();
}

Answer 3

Java允许在类级别进行可变阴影。因此，实际上您可以在任何方法中声明一个与类变量同名的变量。在您的情况下，变量名称为players_in_game。

您可以在方法中再次定义该变量，但是该新变量的范围将有所不同。因此，如果要在方法中设置该类级别的String，请不要定义新变量并使用该类级别的变量。

因此只需使用以下代码：

if (!num_of_players_in_game.isDisplayed()) {
    players_in_game = "0";
} else {
    players_in_game = num_of_players_in_game.getText();
}

已经有人用代码回答了。我只想解释原因。

Answer 4

您可以尝试以下方法：

String players_in_game = null;

public void join_game_user_increases_register() throws Exception {

WebDriverWait wait = new WebDriverWait(Drivers.getDriver(), 10);
wait.until(ExpectedConditions.visibilityOf(countdownLabel));

try {
    if (num_of_players_in_game.isDisplayed()) {
        String players_in_game = num_of_players_in_game.getText();
    }
} catch (Exception e) {
    String players_in_game = "0";
}

System.out.println(players_in_game);
int first_num = Integer.parseInt(players_in_game);

在if和else语句之外使用字符串设置字符串值

4 个答案: