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如何使用 Java 在 Selenium 中設定一個乾淨的頁面對象模型 (POM)
master_blast · 2026-05-28 · via DEV Community

master_blaster

如何使用頁面物件模型(POM)來構建一個乾淨的 Selenium-Java 自動化框架

當你剛開始自動化測試時,很容易將所有測試腳本寫在一個單一的巨大文件中。但隨著你的專案成長,網頁元素變更,維護變成一團糟。

這就是頁面物件模型(POM) 撐台救急。在這個快速指南中,我們將探討如何使用 Java 和 Selenium 清潔地將您的測試邏輯與頁面佈局分離。


🚀 為何使用頁面對象模式?

POM 是一種設計模式,其中您應用程式的每個網頁都有一個對應的 頁面類別。這個類別包含元素定位器和可在該頁面上執行的動作。

主要優勢:

  • 可重用性:寫一次定位器,可在多個測試中重用。
  • 易於維護:如果按鈕ID變更,你只需在一個地方修復,而不需要在二十個不同的測試腳本中修復。
  • 可讀性:你的實際測試文件看起來像平靜的英文步驟。

💻 代码結構

讓我們看個實際例子:自動化一個簡單的登入流程。

1. 頁面對象類

這個類別定義了登入頁面。它包含了網頁元素(定位器)以及與之互動的方法。


java
package pages;

import org.openqa.selenium.By;
import org.openqa.git.WebDriver;

public class LoginPage {
    private WebDriver driver;

    // 1. Locate the Web Elements using private variables
    private By usernameField = By.id("username");
    private By passwordField = By.id("password");
    private By loginButton = By.id("submit-btn");

    // Constructor to initialize the driver
    public LoginPage(WebDriver driver) {
        this.driver = driver;
    }

    // 2. Action Methods
    public void enterUsername(String username) {
        driver.findElement(usernameField).sendKeys(username);
    }

    public void enterPassword(String password) {
        driver.findElement(passwordField).sendKeys(password);
    }

    public void clickLogin() {
        driver.findElement(loginButton).click();
    }
}

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