Question

我正在尝试让用户上传多个大型XML和文本文件以供进一步处理，但WFileUpload不允许超过128kb的任何内容，我无法找到一种方法来覆盖默认设置。在Xubuntu 16.04上安装wt 3.3.6。使用Firefox中的默认设置访问0.0.0.0:8080的wthttp服务器。

我已经查看了file_dialog可执行文件的--help设置，并找到了选项--max-memory-request-size，但是改变它似乎并没有帮助。我还编辑了/etc/wt/wt_config.xml，将max-memory-request-size更改为高于128kb的值，但也无济于事。基于输出文件＆＃34; file_dialog-output.txt＆＃34;我可以成功上传60kb文件，但是2Mb文件失败。

我正在构建并运行以下代码，如.hpp文件中所述：

file_dialog.hpp

//Compile
//g++ file_dialog.cpp -o file_dialog -lwt -lwthttp
//Run
//./file_dialog --docroot . --http-address 0.0.0.0 --http-port 8080

//headers
#include <Wt/WApplication>
#include <Wt/WContainerWidget>
#include <Wt/WFileUpload>
#include <Wt/WPushButton>
#include <Wt/WBreak>

//FileApplication class definition, derived from WApplication
class FileApplication : public Wt::WApplication
{
    public:
        FileApplication(const Wt::WEnvironment & env);
        Wt::WContainerWidget * file_upload_dialog_container_widget;
        Wt::WFileUpload * file_upload;
        Wt::WPushButton * file_output_button;
        std::ofstream fout;
        void tooLargeBytes(long long int byte_size_1);
        void warningFileTooLarge(void);
        void infoFileUploaded(void);
};

file_dialog.cpp

#include "file_dialog.hpp"

//FileApplication constructer class; returns root with widget
FileApplication::FileApplication(const Wt::WEnvironment& env)
:   Wt::WApplication(env)
{
    setTitle("File Generation");

    this->requestTooLarge().connect(this, &FileApplication::tooLargeBytes);

    Wt::WContainerWidget * upload_dialog_container_widget = new Wt::WContainerWidget(root());
    Wt::WFileUpload * file_upload = new Wt::WFileUpload(upload_dialog_container_widget);
    file_upload->setMultiple(true);
    new Wt::WBreak(upload_dialog_container_widget);
    Wt::WPushButton * file_output_button = new Wt::WPushButton(upload_dialog_container_widget);
    file_output_button->setText("Upload");

    file_upload->fileTooLarge().connect(this, &FileApplication::warningFileTooLarge);
    file_upload->uploaded().connect(this, &FileApplication::infoFileUploaded);
    file_output_button->clicked().connect(file_upload, &Wt::WFileUpload::upload);
    file_output_button->clicked().connect(file_output_button, &Wt::WPushButton::disable);
}

//Application - File too large
void FileApplication::tooLargeBytes(long long int byte_size_1)
{
    std::ofstream fout ("file_dialog-output.txt");
    fout << "byte_size_1";
    fout << byte_size_1;
    fout.close();
}

//File too large
void FileApplication::warningFileTooLarge(void)
{
    std::ofstream fout ("file_dialog-output.txt");
    fout << "File too large";
    fout.close();
}

//File successfully uploaded
void FileApplication::infoFileUploaded(void)
{
    std::ofstream fout ("file_dialog-output.txt");
    fout << "File uploaded";
    fout.close();
}

//Application constructor function
Wt::WApplication * createApplication(const Wt::WEnvironment& env)
{
    return new FileApplication(env);
}

//Main function
int main(int argc, char ** argv)
{
    return Wt::WRun(argc, argv, &createApplication);
}

非常感谢任何帮助！

Wt：https://www.webtoolkit.eu/wt

Wt :: WFileUpload：https://www.webtoolkit.eu/wt/doc/reference/html/classWt_1_1WFileUpload.html

Answer 1

解决方案：在wt_config.xml

中增加参数max-request-size

感谢这些解决方案的资源：

https://www.webtoolkit.eu/wt/doc/reference/html/overview.html

http://redmine.webtoolkit.eu/boards/2/topics/11351?r=11943#message-11943

Wt :: WFileUpload文件过大

1 个答案: