import org.openqa.selenium.By;
import org.openqa.selenium.JavascriptExecutor;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.firefox.FirefoxDriver;
import org.testng.Assert;
import org.testng.annotations.Test;

import java.awt.*;
import java.awt.datatransfer.StringSelection;
import java.awt.event.KeyEvent;

public class BaiduUploadImg {
    @Test
    public void baiduUploadImg()
            throws InterruptedException, AWTException {
        System.setProperty("webdriver.firefox.marionette",
                "src/main/resourcec/geckodriver.exe");
        String baiduHomePage;
        baiduHomePage = "https://www.baidu.com/";
        WebDriver driver;
        driver = new FirefoxDriver();
        driver.manage().window().maximize();
        driver.get(baiduHomePage);
        Thread.sleep(2000);
        Assert.assertEquals(driver.getTitle(),
                "百度一下，你就知道");

        driver.findElement
                (By.xpath(".//*[@id=‘form‘]/span[1]/span")).click();
        //點擊相機圖標
        Thread.sleep(2000);
        WebElement element = driver.findElement
                (By.xpath(".//*[@id=‘form‘]/div/div[2]/div[2]/input"));
        ((JavascriptExecutor) driver).executeScript
                ("arguments[0].click();", element);
        //模擬JS點擊本地上傳圖片
        Thread.sleep(2000);

        String path = System.getProperty("user.dir")+
                "\\src\\main\\resources\\img.jpg";
        StringSelection stringSelection = new StringSelection(path);
        //指定圖片的路徑，使用相對路徑
        Toolkit.getDefaultToolkit().getSystemClipboard()
                .setContents(stringSelection, null);
        //把圖片路徑復制粘貼到剪切板

        Robot robot = new Robot();
        robot.keyPress(KeyEvent.VK_ENTER);
        //按下Enter鍵
        robot.keyRelease(KeyEvent.VK_ENTER);
        //釋放Enter鍵

        robot.keyPress(KeyEvent.VK_CONTROL);
        robot.keyPress(KeyEvent.VK_V);
        //按下Ctrl+V
        robot.keyRelease(KeyEvent.VK_CONTROL);
        robot.keyRelease(KeyEvent.VK_V);
        //釋放Ctrl+V

        robot.keyPress(KeyEvent.VK_ENTER);
        //再次點擊Enter鍵
        robot.keyRelease(KeyEvent.VK_ENTER);
        //再次釋放Enter鍵

        Thread.sleep(3000);
        Assert.assertEquals(driver.getTitle(),
                "百度識圖——以圖搜信息，發現更多可能");
        driver.close();
        driver.quit();
    }
}

Selenium上傳圖片