Question

我有一个包含以下矩阵/表格的文本文件：

# 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

鉴于结构很常见，是否没有Java库可以解析为Java结构？类似的东西：

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将其解析为CSV，分隔符是空格或制表符而不是逗号。没什么更高的水平？

Answer 1

opencsv FAQ。

中介绍了这一点

来自常见问题：

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);

那就是说，反正并不难：）

在逐行拆分之后，您可以使用Commons BeanUtils' populate() method在几行代码中执行相同的操作。伪代码：

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)
}

如何将表解析为Java数据结构？

1 个答案: