Question

您好。我试图从Dropbox URL读取文本文件，并将文本文件的内容放入ArrayList。我能够通过使用openStream（）方法读取和打印数据，但我似乎无法弄清楚如何将数据放入ArrayList

URL pList = new URL("http://url");
  BufferedReader in = new BufferedReader(
        new InputStreamReader(
        pList.openStream()));

  String inputLine;

  while ((inputLine = in.readLine()) != null)
      System.out.println(inputLine);

会很感激帮助吗？

Answer 1

List<String> list = new ArrayList<String>();
while ((inputLine = in.readLine()) != null) {
    list.add(inputLine);
}

Answer 2

尝试这样的事情：

String inputLine;
ArrayList<String> array = new ArrayList<String>();

while ((inputLine = in.readLine()) != null) {
    array.add(inputLine);
}

Answer 3

这取决于你想做什么：

将多个DropBox文件存储在ArrayList中，其中1个项目代表1个文件

使用StringBuilder将所有线条拼接成一个字符串。

List<String> files = new ArrayList<String>();
files.add(readFileUsingStringBuilder(pList));

public static String readFileUsingStringBuilder(URL url)
{
     StringBuilder sb = new StringBuilder();
     String separator = "";
     BufferedReader br = new BufferedReader(new InputStreamReader(url.openStream()));
     String line;
     while ((line = br.readLine() != null)
     {
         sb.append(separator);
         sb.append(line);
         separator = "\n";
     }
     return sb.toString();
}

将文件的每一行存储在ArrayList的记录中

String inputLine;
ArrayList<String> array = new ArrayList<String>();

while ((inputLine = in.readLine()) != null) {
    array.add(inputLine);
}

从URL读取数据并将其放入ArrayList

3 个答案: