如何將表解析為Java數據結構？

Question

我有一個具有以下矩陣/表的文本文件：

# Matrix size is 13x13
        DEPOT   CHESHNT LIVST   CHINGFD ENFLDTN HERTFDE BSHPSFD CAMBDGE STFD    ELYY    KLYNN   STANAIR BROXBRN
DEPOT   00:00   01:00   00:28   00:02   00:40   01:00   00:02   00:05   01:00   00:30   01:00   00:31   01:00   
CHESHNT 01:00   00:00   00:38   01:00   01:03   01:27   01:02   01:05   01:56   01:21   02:00   01:25   02:00   
LIVST   00:28   00:38   00:00   00:22   00:25   00:49   01:00   01:27   01:20   01:44   01:24   00:47   01:24   
CHINGFD 00:02   01:00   00:20   00:00   00:42   01:02   00:45   01:30   00:58   01:45   01:30   00:45   01:02   
ENFLDTN 00:40   01:03   00:25   00:42   00:00   01:14   00:42   00:45   01:36   01:01   01:40   01:11   01:40   
HERTFDE 01:00   01:27   00:49   01:02   01:14   00:00   01:02   01:05   00:56   01:21   02:00   01:31   01:26   
BSHPSFD 00:02   01:02   01:00   01:00   00:42   01:02   00:00   00:30   00:54   00:47   01:02   00:33   01:02   
CAMBDGE 00:03   01:05   01:27   01:30   00:45   01:05   00:30   00:00   01:01   00:17   01:05   00:36   01:05   
STFD    01:00   01:56   01:20   00:58   01:36   00:52   00:54   01:01   00:00   01:17   01:56   01:06   00:30   
ELYY    00:22   01:30   01:44   01:45   01:10   01:30   00:47   00:17   01:26   00:00   01:30   01:01   01:30   
KLYNN   00:52   02:00   01:24   01:30   01:40   02:00   01:02   01:05   01:56   01:21   00:00   01:31   02:00   
STANAIR 00:31   01:12   00:36   00:45   00:52   01:12   00:33   00:36   01:02   00:53   01:12   00:00   01:12   
BROXBRN 01:00   02:00   01:24   01:02   01:40   01:23   01:02   01:05   00:31   01:21   02:00   01:31   00:00   

鑒於該結構非常普遍，是否沒有可解析為Java結構的Java庫？ 就像是：

Map<String,String> matrix = MatrixParser.parse("matrix.txt"); //where the key is the concatenation of the row and column coordinates. 

我可以看到使用OpenCSV將其解析為CSV，分隔符是空格或制表符而不是逗號。 沒有更高的水平嗎？

Answer 1

opencsv常見問題解答對此進行了介紹 。

從常見問題解答：

ColumnPositionMappingStrategy strat = new ColumnPositionMappingStrategy();
strat.setType(YourOrderBean.class);
String[] columns = new String[] {"name", "orderNumber", "id"}; // the fields to bind do in your JavaBean
strat.setColumnMapping(columns);

CsvToBean csv = new CsvToBean();
List list = csv.parse(strat, yourReader);

就是說，這並不困難：)

逐行拆分后，可以使用Commons BeanUtils的populate()方法在幾行代碼中執行相同的操作。 偽代碼：

cols = loadColumnNamesToArray();
while (moreLines()) {
    vals = line.split
    vals.each_with_index {
        colName = cols[index]
        valMap.put(colName, val)
    }
    bean = Bean.new
    BeanUtils.populate(bean, valMap)
    beanList.add(bean)
}