基于开源库tufao，一个C + +的异步 Web 框架，使用Qt的对象的通信系统（信号与槽）
基于开源库tufao，一个C + +的异步 Web 框架，使用Qt的对象的通信系统（信号与槽）
tufao是一个由QT编写的HTTP服务器。
tufao代替apache来实现http的通信。
本实例在window平台，以源码形式加载到Qt pro项目，Qt mingw版本编译测试运行。
ps：code依赖boost库，请自行下载，修改.pro所依赖boost路径。
> 步骤：
1) 在main.c
#include <QCoreApplication>
#include "MyServer.h"
int main(int argc, char *argv[])
{
QCoreApplication app(argc, argv);
new MyServer;
return 0;
}
2) 在MyServer.h中添加：
#include <Tufao/httpserver.h> // 引入头文件
// create http server
Tufao::HttpServer *server;
MyServer.cpp
MyServer::MyServer(QObject *parent) : QObject(parent)
{
// 创建一个服务器
server = new Tufao::HttpServer;
// 开启监听
if (server->listen(QHostAddress::Any, 8080))
{
qDebug() << "listen ok at 8080";
}
else
{
qDebug() << "listen error at 8080";
}
}
当有client端发送请求来的时候, tufao用的是信号和槽的机制。
3）当有请求来的时候要添加槽函数
MyServer.h
public slots:
void slotQequestReady(Tufao::HttpServerRequest&,Tufao::HttpServerResponse&);
MyServer.cpp
// 连接
connect(server, SIGNAL(requestReady(Tufao::HttpServerRequest&,Tufao::HttpServerResponse&)),
this, SLOT(slotQequestReady(Tufao::HttpServerRequest&,Tufao::HttpServerResponse&));
// 或者用函数是指针的方式
connect(server, &Tufao::HttpServer::requestReady, this, &MyServer::slotQequestReady);
槽函数编写：
void MyServer::slotQequestReady(Tufao::HttpServerRequest& request,Tufao::HttpServerResponse& response)
{
//1. status line
response.writeHead(Tufao::HttpResponseStatus::OK);
//2. write content
response.write("this my first tufao<br/>");
response.write("hahahah  ");
//3. tips: write end and send data 重要
response.end("byebye tufao end<br/>");
}
然后访问主机加上端口名就可以访问了。
> url链接带请求, 例如:
`http://192.168.49.136?user=aa&password=bbb`
1) 当有链接请求的时候，可以在槽函数里来获取url传过来的东西：
```c++
//先导入头文件： include <QUrl>
QString url = request.url().toString();
// 响应报文
response.end(url.toUtf8());
```
然后会返回: `/?user=name&password=pass`
curl命令请求post数据, 用 -d：
curl "http://192.168.49.136:8081" -d "this is post data"
传输文件用：@+路径
curl "http://192.168.49.136:8081" -d "@test.txt"
上传文件时，如果文件过大，那么会有一个：
connect (&request, &Tufao::HttpServerRequest::ready, );
最后一次上传文件时：
connect (&request, &Tufao::HttpServerRequest::end, );
> post请求 案例
MyServerHandle.h
#ifndef MYSERVERHANDLEPOST_H
#define MYSERVERHANDLEPOST_H
#include <QObject>
#include <Tufao/HttpServer>
#include <Tufao/HttpServerRequest>
#include <Tufao/HttpServerResponse>
class MyServerHandlePost : public QObject
{
Q_OBJECT
public:
explicit MyServerHandlePost(QObject *parent = 0);
Tufao::HttpServer *server;
void handlePostData(Tufao::HttpServerRequest&,Tufao::HttpServerResponse&);
signals:
public slots:
void slotRequestReady(Tufao::HttpServerRequest&,Tufao::HttpServerResponse&);
};
#endif // MYSERVERHANDLEPOST_H
MyServerHandle.cpp
#include "MyServerHandlePost.h"
#include <QFile>
MyServerHandlePost::MyServerHandlePost(QObject *parent) : QObject(parent)
{
server = new Tufao::HttpServer;
if(server->listen(QHostAddress::Any, 8081))
{
qDebug() << "listen ok at 8081";
}
else
{
qDebug() << "listen error at 8081";
}
connect(server, SIGNAL(requestReady(Tufao::HttpServerRequest&,Tufao::HttpServerResponse&)),
this, SLOT(slotRequestReady(Tufao::HttpServerRequest&,Tufao::HttpServerResponse&)));
}
void MyServerHandlePost::handlePostData(Tufao::HttpServerRequest &request, Tufao::HttpServerResponse &response)
{
QFile file("/home/xueguoliang/b.txt");
file.open(QFile::WriteOnly);
QByteArray data = request.readBody();
file.write(data);
file.close();
#if 0
// read body
qDebug() << request.readBody();
#endif
response.writeHead(Tufao::HttpResponseStatus::OK);
response.write("post data is write ok\n");
}
void MyServerHandlePost::slotRequestReady(Tufao::HttpServerRequest &request, Tufao::HttpServerResponse &response)
{
if (request.method() == "POST")
{
// end signal: all data is ready &: get all param
connect(&request, &Tufao::HttpServerRequest::end, [&](){
handlePostData(request, response);
});
}
else
{
response.writeHead(Tufao::HttpResponseStatus::OK);
response.end("i need post method\n");
}
}