鸿蒙HarmonyOS实战案例：实现一个基于鸿蒙API的HTTP服务器 - ToB企服应用市场:ToB评测及商务社交产业平台

listen(address: NetAddress): Promise<void>

复制代码

on(type: 'connect', callback: Callback<TCPSocketConnection>): void

复制代码

send(options: TCPSendOptions): Promise<void>

复制代码

on(type: 'message', callback: Callback<SocketMessageInfo>): void

复制代码

HTTP-message = start-line CRLF
*( field-line CRLF )
CRLF
[ message-body ]

复制代码

start-line = request-line / status-line

复制代码

"requestPermissions": [
{
"name": "ohos.permission.INTERNET"
}
]

复制代码

import { socket } from '@kit.NetworkKit';
import { BusinessError } from '@kit.BasicServicesKit';
import { util } from '@kit.ArkTS';
import { webview } from '@kit.ArkWeb';
let tcpServer: socket.TCPSocketServer = socket.constructTCPSocketServerInstance();
@Entry
@Component
struct Index {
@State message: string = '最简单的HTTP服务器示例';
@State port: number = 8080
@State running: boolean = false
@State msgHistory: string = ''
@State webUrl: string = "https://developer.huawei.com/"
scroller: Scroller = new Scroller()
webScroller: Scroller = new Scroller()
controller: webview.WebviewController = new webview.WebviewController()
build() {
RelativeContainer() {
Text(this.message)
.id('txtTitle')
.fontSize(20)
.fontWeight(FontWeight.Bold)
.alignRules({
middle: { anchor: '__container__', align: HorizontalAlign.Center },
top: { anchor: '__container__', align: VerticalAlign.Top }
})
.padding(10)
Text("端口")
.id('txtPort')
.fontSize(15)
.height(40)
.alignRules({
left: { anchor: '__container__', align: HorizontalAlign.Start },
top: { anchor: 'txtTitle', align: VerticalAlign.Bottom }
})
.padding(10)
TextInput({ text: this.port.toString() })
.onChange((value) => {
this.port = parseInt(value)
})
.type(InputType.Number)
.width(80)
.height(40)
.id('txtInputPort')
.fontSize(15)
.alignRules({
left: { anchor: 'txtPort', align: HorizontalAlign.End },
top: { anchor: 'txtPort', align: VerticalAlign.Top }
})
.padding(10)
Button(this.running ? "停止" : "启动")
.onClick(() => {
this.running = !this.running
if (this.running) {
this.start()
} else {
this.stop()
}
})
.height(40)
.width(80)
.id('butRun')
.fontSize(15)
.alignRules({
right: { anchor: '__container__', align: HorizontalAlign.End },
top: { anchor: 'txtPort', align: VerticalAlign.Top }
})
.padding(10)
Scroll(this.scroller) {
Text(this.msgHistory)
.textAlign(TextAlign.Start)
.padding(10)
.width('100%')
.fontSize(12)
.backgroundColor(0xeeeeee)
}
.alignRules({
left: { anchor: '__container__', align: HorizontalAlign.Start },
top: { anchor: 'butRun', align: VerticalAlign.Bottom }
})
.align(Alignment.Top)
.backgroundColor(0xeeeeee)
.height(200)
.scrollable(ScrollDirection.Vertical)
.scrollBar(BarState.On)
.scrollBarWidth(20)
.padding(10)
.id('scrollHis')
Text("请求地址")
.id('txtUrl')
.fontSize(15)
.height(40)
.alignRules({
left: { anchor: '__container__', align: HorizontalAlign.Start },
top: { anchor: 'scrollHis', align: VerticalAlign.Bottom }
})
.padding(10)
TextInput({ text: this.webUrl.toString() })
.onChange((value) => {
this.webUrl = value
})
.height(40)
.id('txtInputWebUrl')
.fontSize(15)
.alignRules({
left: { anchor: 'txtUrl', align: HorizontalAlign.End },
top: { anchor: 'txtUrl', align: VerticalAlign.Top },
right: { anchor: 'butWeb', align: HorizontalAlign.Start }
})
.padding(10)
Button("请求")
.onClick(() => {
this.controller.loadUrl(this.webUrl)
})
.height(40)
.width(80)
.id('butWeb')
.fontSize(15)
.alignRules({
right: { anchor: '__container__', align: HorizontalAlign.End },
top: { anchor: 'txtUrl', align: VerticalAlign.Top }
})
.padding(10)
Scroll(this.webScroller) {
Web({ src: this.webUrl, controller: this.controller })
.padding(10)
.width('100%')
.backgroundColor(0xeeeeee)
.textZoomRatio(200)
}
.alignRules({
left: { anchor: '__container__', align: HorizontalAlign.Start },
top: { anchor: 'txtUrl', align: VerticalAlign.Bottom },
bottom: { anchor: '__container__', align: VerticalAlign.Bottom }
})
.backgroundColor(0xeeeeee)
.scrollable(ScrollDirection.Vertical)
.scrollBar(BarState.On)
.scrollBarWidth(20)
}
.height('100%')
.width('100%')
}
start() {
this.webUrl = "http://127.0.0.1:" + this.port.toString()
let listenAddr: socket.NetAddress = {
address: '0.0.0.0',
port: this.port,
family: 1
}
tcpServer.listen(listenAddr, (err: BusinessError) => {
if (err) {
this.msgHistory += "listen fail \r\n";
return;
}
this.msgHistory += "listen success \r\n";
})
tcpServer.on('connect', (clientSocket: socket.TCPSocketConnection) => {
clientSocket.on('message', (msgInfo: socket.SocketMessageInfo) => {
let requestMsg = buf2String(msgInfo.message)
this.msgHistory += requestMsg + "\r\n"
let resp = buildRespString(requestMsg)
clientSocket.send({ data: resp })
})
});
}
stop() {
tcpServer.off('connect')
}
}
//构造给客户端的应答内容
function buildRespString(content: string) {
let result: string = ""
let bodyContent = "<html>"
bodyContent += "<head>"
bodyContent += "<title>"
bodyContent += "HTTP服务器模拟"
bodyContent += "</title>"
bodyContent += "</head>"
bodyContent += "<body>"
bodyContent += "<h1>"
bodyContent += "浏览器发送的请求信息"
bodyContent += "</h1>"
bodyContent += "<pre><h2>"
bodyContent += content
bodyContent += "</h2></pre>"
bodyContent += "</body>"
bodyContent += "</html>"
let textEncoder = new util.TextEncoder();
let contentBuf = textEncoder.encodeInto(bodyContent)
result += "HTTP/1.1 200 OK \r\n"
result += "Content-Type: text/html; charset=utf-8 \r\n"
result += `Content-Length: ${contentBuf.length} \r\n`
result += "\r\n"
result += bodyContent
return result
}
//ArrayBuffer转utf8字符串
function buf2String(buf: ArrayBuffer) {
let msgArray = new Uint8Array(buf);
let textDecoder = util.TextDecoder.create("utf-8");
return textDecoder.decodeWithStream(msgArray)
}

复制代码

tcpServer.on('connect', (clientSocket: socket.TCPSocketConnection) => {
clientSocket.on('message', (msgInfo: socket.SocketMessageInfo) => {
let requestMsg = buf2String(msgInfo.message)
this.msgHistory += requestMsg + "\r\n"
let resp = buildRespString(requestMsg)
clientSocket.send({ data: resp })
})
});

复制代码