Java如何读取csv文件并将数据放入对象中

读取csv文件并封装数据为对象

例如

图中的一个 .csv 文件，需要读取数据封装对象进行数据持久化。

public static void readcsv(string readpath, arraylist list)
{
    file infile = new file(readpath);
    try
    {
        bufferedreader reader = new bufferedreader(new filereader(infile));
        boolean sign = false;       //用来跳过第一行的名称
        while(reader.ready())
        {
            string line = reader.readline();
            stringtokenizer st = new stringtokenizer(line, ",");
            int date, time, num_transaction, response_time;
            double sucrate;

            if (st.hasmoretokens() && sign)
            {
                date = integer.valueof(st.nexttoken().trim());
                time = integer.valueof(st.nexttoken().trim());
                num_transaction = integer.valueof(st.nexttoken().trim());
                sucrate = double.valueof(st.nexttoken().trim());
                response_time = integer.valueof(st.nexttoken().trim());

                sample sample = new sample(date, time, num_transaction, sucrate, response_time);
                list.add(sample);
            }
            else
            {
                sign = true;
            }
        }
        reader.close();

    }
    catch (filenotfoundexception e)
    {

        e.printstacktrace();
    }
    catch (ioexception e)
    {

        e.printstacktrace();
    }
}

当有多个对象时

可以传入一个 class对象来获取到需要封装对象的类名，进一步实现方法一般化：

public class readcsv {
    public static void readcsv(inputstream inputstream, arraylist