java - 从文本文件中读取和提取不同的数据并创建不同的对象

Question

我有三个文本文件。第一个看起来像这样:

1574683 Abyssinia 105 60 25 21 11

第二个看起来像这样:

2454438 Oceanway 112 52 20 5 8

但是第三个的一小部分看起来像这样(其余部分就这样，没有什么不同):

9146578 Atilgan 98 59 18 15 20

1000085320 N N
1000255961 N N
1000511923 N N
1000853206 N N
1001279810 N N
1001791735 N N
...

我试图从这些文件创建对象并将它们存储在数组列表中，前两个文件成功。但最后一个有点不同，因为每一行都是一个对象，但第一行是另一个对象，它必须包含其余对象，还有一个数组列表。
这是我的代码:

String[] name_and_path_of_files = {
    "C:\\Users\\Asus\\Documents\\NetBeansProjects\\NesneProjesi\\src\\1574683.txt",
    "C:\\Users\\Asus\\Documents\\NetBeansProjects\\NesneProjesi\\src\\\\2454438.txt",
    "C:\\Users\\Asus\\Documents\\NetBeansProjects\\NesneProjesi\\src\\\\9146578.txt"
};
    Scanner inputFileReader = null;
    Liman liman = new Liman();
try {
    for (String fileInfo : name_and_path_of_files) {

        inputFileReader = new Scanner(new File(fileInfo));

        int line_index = 0;

        while (inputFileReader.hasNext()) {
                //String separated_numbers[] = inputFileReader.nextLine().split(" ");
                //inputFileReader.useDelimiter("\\\\d+");
                int IMO = inputFileReader.nextInt();
                String isim = inputFileReader.next();
                int Max_Konteyner_sayisi = inputFileReader.nextInt();
                int Buyuk_Konteyner_sayisi = inputFileReader.nextInt();
                int Sogutuculu_Konteyner_sayisi = inputFileReader.nextInt();
                int Toksik_Taşıma_siniri = inputFileReader.nextInt();
                int Patlayıcı_Taşıma_siniri = inputFileReader.nextInt();

                Gemi yeniGemi = new Gemi(IMO, isim, Max_Konteyner_sayisi, Buyuk_Konteyner_sayisi, Sogutuculu_Konteyner_sayisi,Toksik_Taşıma_siniri, Patlayıcı_Taşıma_siniri);
                liman.gemiEkle(yeniGemi); //gemiEkle adds ships into limans arraylist 'Gemiler'.
                System.out.println(liman.Gemiler);
                if(line_index > 0){
                int Seri_Numarasi = inputFileReader.nextInt();
                String Konteyner_Ozelligi = inputFileReader.next();
                String Icerik_Ozelligi = inputFileReader.next();
                Konteyner yeniKonteyner = new Konteyner(Seri_Numarasi,Konteyner_Ozelligi,Icerik_Ozelligi);
                yeniGemi.konteynerEkle(yeniKonteyner);
                System.out.println(yeniGemi.Konteynerler.toString());
                }
            line_index++;
        }    
    }
    //System.out.println(liman.Gemiler);
} catch (Exception e) {
    e.printStackTrace();
} finally {
        inputFileReader.close();
}

几乎所有内容都有效，但第三个文件成功获取了第一行，但是当它获取其他对象时，它在这一行给出了一个InputMismatchException:

int Max_Konteyner_sayisi = inputFileReader.nextInt();

这是输出:

[IMO: 1574683，Isim: 阿比西尼亚, 105, 60, 25, 11]]
[IMO: 1574683，Isim:阿比西尼亚，105,60,25,11]，IMO:2454438，Isim:Oceanway，112,52,20,8]]
[IMO: 1574683，Isim:阿比西尼亚，105,60,25,11]，IMO:2454438，Isim:Oceanway，112,52,20,8]，IMO:9146578，Isim:阿蒂尔甘，98,59,18,20 ]]

Answer 1

您只需要使用 hasNextInt():根据到目前为止我对您的设计的了解，您需要进行以下更改:

    String[] name_and_path_of_files = {
        "C:\\Users\\Asus\\Documents\\NetBeansProjects\\NesneProjesi\\src\\1574683.txt",
        "C:\\Users\\Asus\\Documents\\NetBeansProjects\\NesneProjesi\\src\\\\2454438.txt",
        "C:\\Users\\Asus\\Documents\\NetBeansProjects\\NesneProjesi\\src\\\\9146578.txt"
    };
        Scanner inputFileReader = null;
        Liman liman = new Liman();
    try {
        for (String fileInfo : name_and_path_of_files) {

            inputFileReader = new Scanner(new File(fileInfo));

            int line_index = 0;
            Gemi yeniGemi = null; //---declare your arraylist-containing object here.
            while (inputFileReader.hasNext()) {
                    //String separated_numbers[] = inputFileReader.nextLine().split(" ");
                    //inputFileReader.useDelimiter("\\\\d+");
                    int IMO = inputFileReader.nextInt();
                    String isim = inputFileReader.next();
                    if(inputFileReader.hasNextInt()){
                        int Max_Konteyner_sayisi = inputFileReader.nextInt();
                        int Buyuk_Konteyner_sayisi = inputFileReader.nextInt();
                        int Sogutuculu_Konteyner_sayisi = inputFileReader.nextInt();
                        int Toksik_Taşıma_siniri = inputFileReader.nextInt();
                        int Patlayıcı_Taşıma_siniri = inputFileReader.nextInt();
                        yeniGemi = new Gemi(IMO, isim, Max_Konteyner_sayisi, Buyuk_Konteyner_sayisi,
                                Sogutuculu_Konteyner_sayisi,Toksik_Taşıma_siniri, Patlayıcı_Taşıma_siniri)
                        liman.gemiEkle(yeniGemi); //gemiEkle adds ships into limans arraylist 'Gemiler'.
                        System.out.println(liman.Gemiler);
                    }
                    else{
                        //int Seri_Numarasi = inputFileReader.nextInt();//---why repeat when you have retrived this line's leading values?
                        //String Konteyner_Ozelligi = inputFileReader.next();
                        String Icerik_Ozelligi = inputFileReader.next();
                        Konteyner yeniKonteyner = new Konteyner(IMO,isim,Icerik_Ozelligi);
                        yeniGemi.konteynerEkle(yeniKonteyner);
                        System.out.println(yeniGemi.Konteynerler.toString());
                        }
            }    
        }
        //System.out.println(liman.Gemiler);
    } catch (Exception e) {
        e.printStackTrace();
    } finally {
            inputFileReader.close();
    }