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當比較兩個值時，它顯示字符串索引超出范圍：-1

Java

慕的地6264312 2023-04-26 14:09:50

我想要從 flipkart 和亞馬遜網站比較的商品的最低價格。我正在這兩個網站上搜索特定的手機 public static void main(String arg[]) throws InterruptedException { ArrayList<String[]> data1 = new ArrayList<String[]>(); String[] entriesArr = null; String[] entriesArr1 = null; System.setProperty("webdriver.chrome.driver","C:\\Seleniumjava\\driver\\chromedriver.exe"); WebDriver driver = new ChromeDriver(); driver.manage().timeouts().implicitlyWait(20,TimeUnit.SECONDS); //open flipkart driver.get("https:/www.flipkart.com");//xpath for close the popup driver.findElement(By.xpath("//button[text()='?']")).click(); driver.findElement(By.xpath("//div[@class='O8ZS_U']/input")).sendKeys("Redmi 7 ( 32 MB , 2 GB ) Black"); driver.findElement(By.xpath("//div[@class='O8ZS_U']/input")).sendKeys(Keys.ENTER); List<WebElement> phonenames = driver.findElements(By.xpath("//div[@class='_3wU53n']")); List<WebElement> phoneprice = driver.findElements(By.xpath("//div[@class='_1vC4OE _2rQ-NK']")); for( int i=0;i<phonenames.size();i++) { if(phonenames.get(i).getText().contains("Redmi 7 (Eclipse Black, 32 GB)")) { entriesArr = new String[]{phonenames.get(i).getText().toString(), phoneprice.get(i).getText().toString() }; data1.add(entriesArr); } }當我運行我的代碼時，它顯示 String index out of range: -1 in the line int value = Integer.parseInt(data.get(i)[1].substring(1).replace(",", "")) ;

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1 回答

桃花長相依

TA貢獻1860條經驗獲得超8個贊

我添加了一些sleep for wait a load page enter click后，你錯誤的選擇了一個定位器By.xpath("//span[@class='a-offscreen']")，定位器沒有給出任何文本=""，所以當你使用.substring(1)它時會導致錯誤String index out of range: -1，請試試下面的代碼。

public static void main(String arg[]) throws InterruptedException {

ArrayList<String[]> data1 = new ArrayList<String[]>();

String[] entriesArr = null;

String[] entriesArr1 = null;

System.setProperty("webdriver.chrome.driver","C:\\Seleniumjava\\driver\\chromedriver.exe");

WebDriver driver = new ChromeDriver();

driver.manage().timeouts().implicitlyWait(20,TimeUnit.SECONDS);

//open flipkart

driver.get("https://www.flipkart.com");

//xpath for close the popup

driver.findElement(By.xpath("//button[text()='?']")).click();

driver.findElement(By.xpath("//div[@class='O8ZS_U']/input")).sendKeys("Redmi 7 ( 32 MB , 2 GB ) Black");

driver.findElement(By.xpath("//div[@class='O8ZS_U']/input")).sendKeys(Keys.ENTER);

//I'm edit here

Thread.sleep(5000);

List<WebElement> phonenames = driver.findElements(By.xpath("//div[@class='_3wU53n']"));

List<WebElement> phoneprice = driver.findElements(By.xpath("//div[@class='_1vC4OE _2rQ-NK']"));

for( int i=0;i<phonenames.size();i++){

if(phonenames.get(i).getText().contains("Redmi 7 (Eclipse Black, 32 GB)")) {

entriesArr = new String[]{phonenames.get(i).getText().toString(), phoneprice.get(i).getText().toString() };

data1.add(entriesArr);

}

driver.close();

System.setProperty("webdriver.chrome.driver","C:\\Seleniumjava\\driver\\chromedriver.exe");

WebDriver driver1 = new ChromeDriver();

driver1.manage().timeouts().implicitlyWait(20,TimeUnit.SECONDS);

//open amazon site

driver1.get("https:/www.amazon.in");

driver1.findElement(By.xpath("//input[@id='twotabsearchtextbox']")).sendKeys("Redmi 7 ( 32 MB , 2 GB ) Black");

driver1.findElement(By.xpath("//input[@id='twotabsearchtextbox']")).sendKeys(Keys.ENTER);

Thread.sleep(3000);

List< WebElement> phonenames2 = driver1.findElements(By.xpath("//a//span[@class='a-size-medium a-color-base a-text-normal']"));

//I'm edit here

List< WebElement> phoneprice1 = driver1.findElements(By.xpath("//*[@class='a-price' and @data-a-size='l']"));

for( int j=0;j<phonenames2.size();j++) {

if(phonenames2.get(j).getText().contains("Redmi 7 (Eclipse Black, 2GB RAM, 32GB Storage)")) {

entriesArr1 = new String[]{phonenames2.get(j).getText().toString(), phoneprice1.get(j).getText().toString() };

data1.add(entriesArr1);

}

driver1.close();

String[] d = getMinPhonePrice(data1);

System.out.println(d[0] + ", " + d[1]);

}

//method for minimum phone price

public static String[] getMinPhonePrice(ArrayList<String[]> data){

int value_min = Integer.parseInt(data.get(0)[1].substring(1).replace(",", ""));

String key_min="";

for(int i=1;i<data.size();i++) {

int value = Integer.parseInt(data.get(i)[1].substring(1).replace(",", ""));

if(value < value_min) {

value_min=value;

key_min=data.get(i)[0];

}

String[] d = {key_min,String.valueOf(value_min)};

return d;

}

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當比較兩個值時，它顯示字符串索引超出范圍：-1

當比較兩個值時，它顯示字符串索引超出范圍：-1