java - 如何将 List 值从 UTF-8 转换为 String？

Question

我想将一些希腊文本从 UTF-8 转换为字符串，因为 Java 无法识别它们。然后，我想将它们填充到 JTable 中。所以我使用 List 来帮助我。下面是我的代码片段:

String[][] rowData;
List<String[]> myEntries;
//...
try {
        this.fileReader = new FileReader("D:\\Book1.csv");
        this.reader = new CSVReader(fileReader, ';');
        myEntries = reader.readAll();

        //here I want to convert every value from UTF-8 to String
        convertFromUTF8(myEntries); //???

        this.rowData = myEntries.toArray(new String[0][]);
    } catch (FileNotFoundException ex) {
        Logger.getLogger(VJTable.class.getName()).log(Level.SEVERE, null, ex);
    } catch (IOException ex) {
        Logger.getLogger(VJTable.class.getName()).log(Level.SEVERE, null, ex);
    }
//...

我创建了一个方法

public String convertFromUTF8(List<String[]> s) {
    String out = null;
    try {
        for(String stringValues : s){
            out = new String(s.getBytes("ISO-8859-1"), "UTF-8");
        }
    } catch (java.io.UnsupportedEncodingException e) {
        return null;
    }
    return out;
}

但我无法继续，因为 List 没有 getBytes() 方法。我应该怎么办。任何想法都会非常有帮助。预先感谢您。

Answer 1

问题是您使用的 FileReader 只支持“默认”字符集:

this.fileReader = new FileReader("D:\\Book1.csv");

FileReader 的 javadoc对此非常明确:

The constructors of this class assume that the default character encoding and the default byte-buffer size are appropriate. To specify these values yourself, construct an InputStreamReader on a FileInputStream.

获取指定字符集的 Reader 的适当方法如下:

this.fileStream = new FileInputStream("D:\\Book1.csv");
this.fileReader = new InputStreamReader(fileStream, "utf-8");