May 2025
Intermediate to advanced
354 pages
4h 49m
Chinese
Content preview from 学习 Microsoft Power Automate
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第 4 章. 使用触发器和操作
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在第 3 章中，你学习了如何以四种不同的方式创建新流程。因为在深入了解细节之前，你首先需要了解如何创建流程，所以我没有花很多时间解释触发器和操作是如何使用的，也没有讨论如何填充它们。在本章中，我将重点帮助你理解如何使用触发器和操作来创建流程。我将解释如何找到能实现所需功能的触发器或动作，以及如何使用动态内容在运行时配置它们。您还将学习如何使用函数将动态内容转换为所需的特定值，以及如何使用 JavaScript Object Notation (JSON) 直接引用动态内容。最后，我将介绍如何修改某些触发器和操作的设置，以改变它们在特定情况下的运行方式。在本章结束时，您将能够创建流程，并开始用于自动化组织中的业务流程。
触发器、操作和连接器
触发器和操作 是 Power Automate 的主要构建模块。每个触发器或操作都代表一个 API，可用于与特定数据源交互。触发器和操作既可定义，也可包含在连接器中。
寻找合适的连接器
，连接器已超过 645 个，而且每个季度都在增加。许多连接器都是由微软创建的。其他连接器则由第三方软件供应商创建。例如，Oracle 就创建了一个连接器，可用于访问 Oracle 数据库。有些连接器也是由独立开发人员创建的，然后由微软进行验证。如果找不到要使用的数据源的连接器，可以创建自己的自定义连接器。
备注
创建自定义连接器是一个高级主题，超出了本书的范围。有关 Power Automate 自定义连接器的更多信息，请参阅文档。
有数以百计的连接器可供选择，您将面临的问题之一就是找到想要使用的连接器，以便访问其触发器和操作。为了简化这一过程，Power Automate 提供了一个分类搜索对话框，您可以用它来查找特定的连接器。找到感兴趣的连接器后，您可以深入查看文档，了解该连接器所包含内容的具体细节。
练习 4-1. 探索连接器
在 这个示例中，我们将浏览可用连接器列表，找到 Dataverse 数据库连接器，并查看提供的文档。
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登录https://make.powerautomate.com，选择左侧导航栏中的 "连接器 "选项卡。这将显示 Power Automate 可用的所有连接器列表。您可以使用右侧的下拉菜单将列表限制为只包括标准或高级连接器。图 4-1显示了只显示标准连接器的连接器列表。
图 4-1. 筛选连接器列表
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将下拉菜单改回 "所有连接器"，然后在页面顶部的 "搜索连接器 "文本框中输入 "Dataverse"。现在你应该能看到两个 Dataverse 连接器，一个是当前的，一个是传统的。将鼠标悬停在连接器上会显示一个工具提示，显示连接器的全名。如图 4-2 所示，两个连接器都显示绿色的高级标签，表明这些是高级连接器，需要额外的许可，第 2 章对此进行了讨论。
图 4-2. 搜索连接器
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选择绿色的 Microsoft Dataverse ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.