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我有关于使用 FileReader 应用 SwingWorker 的问题,我的观点是我需要用 SwingWorker 实现 FileReader 以使我的 UI 显示文件中的文本,这是我的代码

class Read1 extends SwingWorker<String,String>{
    protected Void doInBackground() throws Exception{
        FileReader read = new FileReader("msg.txt");
        BufferedReader in = new BufferedReader(read);
        String s;
        s=in.readLine();
        System.out.println(s);
        return s;
    }
   protected void done()
    {
      try{
       String show;
       show=get();
       textArea.append(show);}catch(Exception e){}}

 public static void main(String args[]) {
   Read1 r = new Form().new Read1();
   r.execute();

但是它不会在 UI 文本区域上附加任何内容

有人有解决方案吗?谢谢

4

1 回答 1

0

Works just fine for me:

public class Reader extends SwingWorker<List<String>, String> {

    protected List<String> doInBackground() throws Exception {

        ArrayList<String> lstText = new ArrayList<String>(25);

        BufferedReader in = null;
        try {

        FileReader read = new FileReader("Scanner.txt");
        in = new BufferedReader(read);
        String s = null;

        while ((s = in.readLine()) != null) {

            lstText.add(s);
            publish(s);

        }

        } finally {


            try {

                in.close();

            } catch (Exception e) {
            }
        }

        return lstText;

    }

    @Override
    protected void process(List<String> chunks) {

        for (String text : chunks) {

            fldText.append(text + "\n");

        }

    }

    @Override
    protected void done() {
    }
}
于 2012-07-26T01:40:12.253 回答