无法创建行，因为在表单上传时提供空图像路径

Question

我想在视图中上传图片并将数据保存在数据库使用表单中，但是当按下提交按钮时，我得到一些错误当我有调用成员函数hasFile（）时在我的计算机上选择的图像，如何修复该错误，以便我可以上传图像和保存数据库上的数据。谢谢你的回答。

此处控制器中的代码：

import javafx.application.Platform;
import javafx.concurrent.Service;
import javafx.concurrent.Task;
import javafx.scene.control.Label;
import javafx.scene.paint.Color;
import javafx.scene.text.Font;
import javafx.scene.text.FontWeight;
import tools.InfoTool;

public class MoveTitleService extends Service<Void>{
    private String title;
    volatile boolean doAnimation;
    private int counter;
    public Label movingText = new Label("A reallyyy big teeeeexxxxxxxxxxxxxxxxxxxxxxxt");


    /**
     *Constructor
    */
    public MoveTitleService() {
         movingText.setFont(Font.font("null",FontWeight.BOLD,14));
         movingText.setTextFill(Color.WHITE);   

         setOnSucceeded( s ->{
             movingText.setText("");
         });
    }

    //Start the Service
    public void startTheService(String title) {
        this.title = title;
        doAnimation = true;

        restart();
    }


    //Stop the Service
    public void stopService(){
        doAnimation=false;
    }

    @Override
    protected Task<Void> createTask() {
        return new Task<Void>() {
            @Override
            protected Void call() throws Exception {

                while (doAnimation) {
                    //System.out.println("MoveTitleService is Running...");

                    // One letter at a time
                    for (int m = 0; m <= title.length(); m++) {
                        counter=m;

                        Platform.runLater( () ->{
                            movingText.setText(title.substring(0, counter) + addSpaces(title.length() - counter));      
                        });

                        if(!doAnimation) break;
                        Thread.sleep(150);
                    }

                    // Disappearing to back
                    for (int m = 0; m < title.length(); m++) {
                        counter=m;

                        Platform.runLater( () ->{
                            movingText.setText(title.substring(counter));
                        });

                        if(!doAnimation) break;
                        Thread.sleep(150);
                    }

                    // Appearing to front
                    for (int m = 1; m <= title.length(); m++) {
                        counter=m;

                        Platform.runLater( () ->{
                            movingText.setText(title.substring(title.length() - counter));
                        });

                        if(!doAnimation) break;
                        Thread.sleep(150);
                    }

                    if(!doAnimation) break;
                    for(int i=0; i<3000/150; i++)
                        Thread.sleep(150);
                    Thread.sleep(3000);

                }

                return null;
            }

            private String addSpaces(int spaces) {
                String z = "";
                for (int i = 0; i <= spaces; i++)
                    z += " ";

                return z;
            }

        };
    }

}

这里有一些脚本表格文件：

public function UploadFile()
    {
        $file = Input::file('image');

        if($file->hasFile('image'))
        {
            $name = $datas->kode_barang.'.jpg';
            $file->move(public_path().'/assets/images/barang/', $name);
            $newpath = public_path().'/assets/images/barang/'.$name;

            $dataGambar = new GambarModel;
            $dataGambar -> kode_gambar   = $datas->kode_barang;
            $dataGambar -> nama_gambar   = $file->getClientOriginalName();
            $dataGambar -> path          = $newpath;
            $dataGambar -> kategori      = 'barang';

            $dataGambar->save();

            Session::flash('message', 'Berhasil menambahkan barang !');
            return Redirect::to('/barang');
        }
        else
        {
            Session::flash('message', 'Upload tidak berhasil'.$file->getPathName() );
            return Redirect::to('/barang');
        }
    }      

Answer 1

在表单标记中添加char str[] = "foobar"; size_t str_len = strlen(str); char rev[str_len + 1]; rev[str_len] = '\0'; for (int i = 0; i < str_len; i++) rev[i] = str[str_len - i - 1]; printf("%s\n", rev); 。