如何从txt文件中读取2个特定列(第1列和第3列)。主要问题是列由不同的分隔符分隔(我想忽略写入(基数16)的第2列)。另外我如何跳过列标题。 txt文件如下所示:
IOU/AB-L Organization
company_id Organization
Address
D0-AB-DB (hex) Ahenhen ViewAt Technology Co.,Ltd.
D0ABDB (base 16) Ahenhen ViewAt Technology Co.,Ltd.
9A,Microprofit,6th Gaoxin South Road, High-Tech
Industrial Park, Nanshan, henzhen.
henzhen guangdong 51867
DN
42-05-F5 (hex) Integrated Technology (Malaysia) Sdn. Bhd.
4205F5 (base 16) Integrated Technology (Malaysia) Sdn. Bhd.
Phase 1, Bayan Aepas FIZ
Bayan Lepas Penang 11923
NY
我正在尝试使用以下代码。但它不起作用。
String line;
BufferedReader reader = new BufferedReader(new FileReader(path));
while ((line = reader.readLine()) != null)
{
String[] parts = line.split(" ", 3);
if (parts.length >= 3)
{
String key = parts[0];
String value = parts[2];
System.out.println("Key value pair is "+key+" "+value);
map.put(key, value);
}
else
{
System.out.println("ignoring line: " + line);
}
}
所以基本上我想在第1行阅读D0-AB-DB
和Ahenhen ViewAt Technology Co.,Ltd.
,之后我想在第2行阅读42-05-F5
和Integrated Technology (Malaysia) Sdn. Bhd.
。
在这种情况下我应该使用什么正则表达式。示例代码会有所帮助。
Thanx提前!!
答案 0 :(得分:1)
重写你的while循环,如下所示:
while ((line = reader.readLine()) != null)
{
String[] parts = line.split("\\((hex)\\)", 3);
if (parts.length >= 2)
{
String key = parts[0].trim();
String value = parts[1].trim();
System.out.println("Key value pair is :"+key+" "+value);
map.put(key, value);
}
else
{
System.out.println("ignoring line: " + line);
}
}