Question

我正在React Native上使用Realm Database。在我的模型架构ID字段中为必填字段。当id字段未定义时，Realm会返回异常，并且不会添加数据。为什么Realm在try catch中不返回异常？

模型架构：

export default class ServicesModule {
    cache = {};
}

ServicesModule.schema = {
    name: "ServicesModule",
    primaryKey: "id",
    properties: {
        id: "int",
        title: "string?"
    }
};

插入数据：

try {
      return new Promise((resolve, reject) => {
         realm().write(() => {
            resolve(realm().create("ServicesModule", {title: 'Test exception'}, true));
         });
      });
} catch(e) {
   console.error(e.message);
}

Answer 1

可能是因为您的承诺没有被拒绝。尝试：

package ee.sims;

import java.util.List;
import java.util.concurrent.TimeUnit;

import org.openqa.selenium.By;
import org.openqa.selenium.StaleElementReferenceException;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.chrome.ChromeDriver;

public class CalederFfdriver {

private static WebDriver driver = new ChromeDriver();
public static void main(String[] args) {
    System.setProperty("webdriver.chrome.driver", 
            "/Users/owner/desktop/chromedriver");


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

    driver.get("http://www.path2usa.com/travel-companions");
    driver.findElement(By.cssSelector("#travel_date")).click();


    List<WebElement>dates =driver.findElements(By.cssSelector(".day"));
    System.out.println(dates.size());



    WebElement navigator =driver.findElement(By.cssSelector("[class='datepicker-days'] th[class='next']"));

    while(!driver.findElement(By.cssSelector("[class='datepicker-days'] th[class='datepicker-switch']")).getText().contains("April")) 

        driver.findElement(By.cssSelector("[class='datepicker-days'] th[class='next']")).click();



    for(int i=0;i<dates.size();i++) {
        String text=dates.get(i).getText();
        if(text.equalsIgnoreCase("23"))

            dates.get(i).click();

    }
}
final  boolean retrying (By by) {
    boolean result = false;
    int attempts = 0;
    while(attempts < 2) {
        try {
            driver.findElement(By.xpath("//*[@class='datepicker-switch']")).click();
            result = true;
            break;
        } catch(StaleElementReferenceException e) {
        }
        attempts++;
    }
    // note that i replaced "return;" here because it was a syntax error
    return result;
}
}

Realm不会在React本机上返回异常

1 个答案: