c – 多个WT应用程序可以在同一端口上运行吗？

Inside WRun()

WRun() is actually a convenience function which creates and configures a WServer instance. If you want more control,for example if you have multiple “entry points”,or want to control the server starting and stopping,you can use the WServer API directly instead.

这里有一个示例,两个应用程序都是Hello World应用程序,但请注意它们在按钮上有不同的标题和不同的消息,当您按下它们时.你可以在src / http / Serve.C和src / Wt / WServer上找到另一个WRun实现.

two_helloworlds.cc

#include <Wt/WApplication>
#include <Wt/WBreak>
#include <Wt/WContainerWidget>
#include <Wt/WLineEdit>
#include <Wt/WPushButton>
#include <Wt/WText>
#include <Wt/WException>
#include <Wt/WLogger>
#include <Wt/WServer>

class HelloApplication : public Wt::WApplication
{
public:
    HelloApplication(const Wt::WEnvironment& env,const std::string& title);

private:
    Wt::WLineEdit *nameEdit_;
    Wt::WText *greeting_;

    void greet();
};

HelloApplication::HelloApplication(const Wt::WEnvironment& env,const std::string& title)
    : Wt::WApplication(env)
{
    setTitle(title);

    root()->addWidget(new Wt::WText("Your name,please ? "));
    nameEdit_ = new Wt::WLineEdit(root());
    Wt::WPushButton *button = new Wt::WPushButton("Greet me.",root());
    root()->addWidget(new Wt::WBreak());
    greeting_ = new Wt::WText(root());
    button->clicked().connect(this,&HelloApplication::greet);
}

void HelloApplication::greet()
{    greeting_->setText("Hello there," + nameEdit_->text());
}
class GoodbyeApplication : public Wt::WApplication{
public:
    GoodbyeApplication(const Wt::WEnvironment& env,const std::string& title);

private:    Wt::WLineEdit *nameEdit_;
    Wt::WText *greeting_;


    void greet();
};

GoodbyeApplication::GoodbyeApplication(const Wt::WEnvironment& env,please ? "));
    nameEdit_ = new Wt::WLineEdit(root());
    Wt::WPushButton *button = new Wt::WPushButton("Say goodbye.",&GoodbyeApplication::greet);
}

void GoodbyeApplication::greet()
{
    greeting_->setText("Goodbye," + nameEdit_->text());
}

Wt::WApplication *createApplication(const Wt::WEnvironment& env)
{
    return new HelloApplication(env,"First app");
}

Wt::WApplication *createSecondApplication(const Wt::WEnvironment& env)
{
    return new GoodbyeApplication(env,"Second app");
}

int YourWRun(int argc,char *argv[],Wt::ApplicationCreator createApplication,Wt::ApplicationCreator createSecondApplication)
{
  try {
    // use argv[0] as the application name to match a suitable entry
    // in the Wt configuration file,and use the default configuration
    // file (which defaults to /etc/wt/wt_config.xml unless the environment
    // variable WT_CONFIG_XML is set)
    Wt::WServer server(argv[0],"");

    // WTHTTP_CONFIGURATION is e.g. "/etc/wt/wthttpd"
    server.setServerConfiguration(argc,argv,WTHTTP_CONFIGURATION);

    // add a single entry point,at the default location (as determined
    // by the server configuration's deploy-path)
    server.addEntryPoint(Wt::Application,createApplication);
    server.addEntryPoint(Wt::Application,createSecondApplication,"/second");
    if (server.start()) {
      int sig = Wt::WServer::waitForShutdown(argv[0]);

      std::cerr << "Shutdown (signal = " << sig << ")" << std::endl;
      server.stop();

      /*
      if (sig == SIGHUP)
        WServer::restart(argc,environ);
      */
      }
  } catch (Wt::WServer::Exception& e) {
    std::cerr << e.what() << "n";
    return 1;
  } catch (std::exception& e) {
    std::cerr << "exception: " << e.what() << "n";
    return 1;
  }
}

int main(int argc,char **argv)
{
    return YourWRun(argc,&createApplication,&createSecondApplication);
}

用它编译

g -g -o two_helloworlds two_helloworlds.cc -I /usr/local/include -L /usr/local/lib -lwthttp -lwt -lboost_random -lboost_regex -lboost_signals -lboost_system -lboost_thread -lboost_filesystem -lboost_program_options -lboost_date_time

并执行

./two_helloworlds –docroot. –http-address 0.0.0.0 –http-port 8080

在localhost：8080上你将访问其中一个应用程序和localhost：8080 /秒你将访问另一个.