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python playwright 库上传和下载操作(自动化测试 playwright)

作者：番茄牛腩不吃番茄

这篇文章主要介绍了python playwright 库上传和下载操作(自动化测试 playwright ),playwright中的上传和下载比selenium的上传和下载要简便些,本文结合实例代码给大家介绍的非常详细，需要的朋友可以参考下

python：自动化测试 playwright 库上传和下载

今天主要是聊聊playwright中的上传和下载操作，playwright中的上传和下载比selenium的上传和下载要简便些，例：selenium中的上传还要有对话框选择文件，再点击上传，而playwright中是找到元素执行点击后设置一个文件位置。

上传

操作语法

# 选择一个文件
page.set_input_files('input#upload', 'myfile.pdf')
# 选择多个文件
page.set_input_files('input#upload', ['file1.txt', 'file2.txt'])
# 删除所有选定的文件
page.set_input_files('input#upload', [])
# 从内存上传缓冲区
page.set_input_files(
    "input#upload",
    files=[
        {"name": "test.txt", "mimeType": "text/plain", "buffer": b"this is a test"}
    ],
)

上述的代码中这种是那种含输入元素(它动态创建的)的上传操作，如果是可点击的上传操作，可以直接使用下述语法：

with page.expect_file_chooser() as fc_info:
    page.click("upload")
file_chooser = fc_info.value
file_chooser.set_files("myfile.pdf")

上传示例
该示例主要演示的是可点击的上传操作，动态输入元素的上传没找到对应示例：

import time
from playwright.sync_api import sync_playwright
with sync_playwright() as p:
    browser = p.chromium.launch(
        headless=False
    )
    page = browser.new_page()
    page.goto("https://域名/user/login")
    page.click('//*[text()="密码登录"]')
    page.click('#user_name')
    page.fill('#user_name', "账号")
    page.click('#password')
    page.fill('#password', "密码")
    page.click('//*[text()="登 录"]')
    time.sleep(2)
    page.click('//*[text()="学习资源"]')
    page.click('//*[@href="/manager/resource/directory" rel="external nofollow"  rel="external nofollow"  rel="external nofollow" ]')
    page.click('//*[text()="导入导出"]')
    time.sleep(2)
    with page.expect_file_chooser() as fc_info:
        page.click('//*[text()=" 上传文件"]')
    file_chooser = fc_info.value
    print(file_chooser)
    file_chooser.set_files('E:\playwrightPyinstaller\导入知识目录.xlsx')

print(file_chooser)打印的结果如下：

<FileChooser page=<Page url='https://域名/manager/resource/directory'> element=JSHandle@<input type="file" accept=".xlsx,.xls"/>>
Process finished with exit code 0

下载

操作语法

# 开始等待下载
with page.expect_download() as download_info:
    # 执行启动下载的操作
    page.click("button#delayed-download")
download = download_info.value
# 等待下载过程完成
path = download.path()

上述代码是下载的语法，这也是处理文件下载的最简单方法。

下载示例

import time
from playwright.sync_api import sync_playwright
with sync_playwright() as p:
    browser = p.chromium.launch(
        headless=False
    )
    context = browser.new_context(
        accept_downloads=True
    )
    page = context.new_page()
    page.goto("https://域名/user/login")
    page.click('//*[text()="密码登录"]')
    page.click('#user_name')
    page.fill('#user_name', "账号")
    page.click('#password')
    page.fill('#password', "密码")
    page.click('//*[text()="登 录"]')
    time.sleep(2)
    page.click('//*[text()="学习资源"]')
    page.click('//*[@href="/manager/resource/directory" rel="external nofollow"  rel="external nofollow"  rel="external nofollow" ]')
    page.click('//*[text()="导入导出"]')
    time.sleep(2)
    with page.expect_download() as download_info:
        page.click('//*[@href="//域名/template/导入知识目录.xlsx" rel="external nofollow"  rel="external nofollow" ]')
    download = download_info.value
    print(download)
    print(download.path())

print(file_chooser)打印的结果如下：

<Download url='https://域名/template/%E5%AF%BC%E5%85%A5%E7%9F%A5%E8%AF%86%E7%9B%AE%E5%BD%95.xlsx' suggested_filename='导入知识目录.xlsx'>
Process finished with exit code 0

print(download.path())是获取下载后的存储路径，打印的结果如下：

C:\Users\lifeng\AppData\Local\Temp\playwright-artifacts-H0nUyZ\2b71684d-7471-4055-9581-6cb364b50efc
Process finished with exit code 0

当然您也可以进行自定义存储路径，这个官方也是提供了相应方法：

import time
from playwright.sync_api import sync_playwright
with sync_playwright() as p:
    browser = p.chromium.launch(
        headless=False
    )
    context = browser.new_context(
        accept_downloads=True
    )
    page = context.new_page()
    page.goto("https://lms3.9first.com/user/login")
    page.click('//*[text()="密码登录"]')
    page.click('#user_name')
    page.fill('#user_name', "账号")
    page.click('#password')
    page.fill('#password', "密码")
    page.click('//*[text()="登 录"]')
    time.sleep(2)
    page.click('//*[text()="学习资源"]')
    page.click('//*[@href="/manager/resource/directory" rel="external nofollow"  rel="external nofollow"  rel="external nofollow" ]')
    page.click('//*[text()="导入导出"]')
    time.sleep(2)
    with page.expect_download() as download_info:
        page.click('//*[@href="//域名/template/导入知识目录.xlsx" rel="external nofollow"  rel="external nofollow" ]')
    download = download_info.value
    download.save_as('E:\playwrightPyinstaller\导入知识目录.xlsx')

download.save_as(path)方法即是官方提供的自定义路径存储，path路径必须要是路径和文件名称在一起，不然就会抛出权限不足的错误异常。

以上总结或许能帮助到你，或许帮助不到你，但还是希望能帮助到你，如有疑问、歧义，直接私信留言会及时修正发布；非常期待你的点赞和分享哟，谢谢！

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