Xojo 语言 网络协议解析 JSON XML Protobuf

Xojo阿木 发布于 10 天前 3 次阅读

阿木博主一句话概括：Xojo【1】 语言网络协议解析【2】：JSON【3】、XML【4】、Protobuf【5】 实践指南

阿木博主为你简单介绍：
随着互联网的快速发展，网络协议解析技术在各个领域都得到了广泛应用。本文将围绕 Xojo 语言，探讨如何解析 JSON、XML 和 Protobuf 三种常见的网络协议格式。通过实际代码示例，帮助开发者更好地理解和应用 Xojo 语言在网络协议解析方面的能力。

一、

Xojo 是一种面向对象的编程语言，支持跨平台开发，适用于 Windows、macOS、Linux 和 iOS 等操作系统。在网络编程领域，Xojo 提供了丰富的库和工具，使得开发者可以轻松地解析和生成各种网络协议数据。本文将重点介绍 Xojo 语言在解析 JSON、XML 和 Protobuf 三种网络协议格式方面的实践。

二、JSON 解析

JSON（JavaScript Object Notation）是一种轻量级的数据交换格式，易于人阅读和编写，同时也易于机器解析和生成。在 Xojo 中，我们可以使用 `JSONDecoder【6】` 类来解析 JSON 数据。

xojo
Dim jsonText As String = '{"name":"John", "age":30, "city":"New York"}'
Dim decoder As JSONDecoder = New JSONDecoder
Dim jsonObject As Dictionary = decoder.Decode(jsonText)

If jsonObject Nil Then
Print "Name: " & jsonObject.Value("name")
Print "Age: " & jsonObject.Value("age")
Print "City: " & jsonObject.Value("city")
End If

在上面的代码中，我们首先定义了一个 JSON 字符串 `jsonText`，然后创建了一个 `JSONDecoder` 对象 `decoder`。使用 `decoder.Decode` 方法将 JSON 字符串解析为 `Dictionary【7】` 对象 `jsonObject`。我们可以通过键值对的方式访问解析后的数据。

三、XML 解析

XML（eXtensible Markup Language）是一种用于存储和传输数据的标记语言。在 Xojo 中，我们可以使用 `XMLDocument【8】` 类来解析 XML 数据。

xojo
Dim xmlText As String = 'John30New York'
Dim xmlDoc As XMLDocument = New XMLDocument
xmlDoc.Parse(xmlText)

Dim personNode As XMLNode = xmlDoc.FindNode("person")
If personNode Nil Then
Dim nameNode As XMLNode = personNode.FindNode("name")
Dim ageNode As XMLNode = personNode.FindNode("age")
Dim cityNode As XMLNode = personNode.FindNode("city")

Print "Name: " & nameNode.Value
Print "Age: " & ageNode.Value
Print "City: " & cityNode.Value
End If

在上面的代码中，我们首先定义了一个 XML 字符串 `xmlText`，然后创建了一个 `XMLDocument` 对象 `xmlDoc`。使用 `xmlDoc.Parse【9】` 方法将 XML 字符串解析为 XML 树结构。通过 `FindNode【10】` 方法，我们可以找到特定的节点，并获取其值。

四、Protobuf 解析

Protobuf（Protocol Buffers）是由 Google 开发的一种数据序列化格式，用于存储和传输数据。在 Xojo 中，我们可以使用 `ProtobufDecoder【11】` 类来解析 Protobuf 数据。

```xojo
Dim protobufText As String = "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