November 2021
Beginner to intermediate
239 pages
4h 15m
Chinese
Content preview from Dapr学习手册
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36
｜
第
0
章
2.
在
Visual Studio
中，按下
Ctrl-F5
启动客户端。
程序应在打印“
Hello
，
World
！”字符串后停止。
3.
当前的
Go
应用期待一个带有
data
字段的
JSON
对象。但是，客户端仅
发送了一个简单的字符串。如果你希望
Go
应用能够正确显示正文，你可
以更新
/greeting
处理器直接打印出请求体，而不是尝试对其进行解码：
txt, _ := ioutil.ReadAll(r.Body)
fmt.Println(string(txt))
客户端工作到此结束。
接下来我们将转到服务端。
0.4.2
编写
gRPC
服务器
现在我们将重写
Hello World
服务来暴露
gRPC
端点而不是
HTTP
端点。为了
保持在每个示例中使用不同编程语言的习惯，这次我们将使用
Java
。
0.4.2.1
先决条件
要完成以下练习，你需要：
• Java
开发套件（
JDK
）。
• Git
客户端。
• Maven
（
https://oreil.ly/fFCzm
）。
0.4.2.2
克隆
Dapr
存储库（如有必要）
在本例中，我们将使用
Dapr
仓库中的
Protobuf
定义。如果你还没有这么做，
请执行以下命令：
git clone https://github.com/dapr/dapr.git
0.4.2.3
创建服务器应用
以下练习使用了
Maven
命令行工具（
mvn
）。虽然诸如
Eclipse
和
IntelliJ
等
简介
｜
37
IDE
都提供了对应的插件，但是我们认为使用命令行工具可以最清楚地了解 ...
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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.