《精通正则表达式》 第401页
public static List
splitCSV(String txt) {
String reg = "\\G(?:^|,)(?:\"([^\"]*+(?:\"\"[^\"]*+)*+)\"|([^\",]*+))";
// 即 \G(?:^|,)(?:"([^"]*+(?:""[^"]*+)*+)"|([^",]*+))
Matcher matcherMain =
Pattern.compile(reg).matcher("");
Matcher matcherQuoto =
Pattern.compile("\"\"").matcher("");
matcherMain.reset(txt);
System.out.println(matcherMain.groupCount());
List strList = new ArrayList();
while (matcherMain.find()) {
String
field;
if
(matcherMain.start(2) >= 0) {
field =
matcherMain.group(2);
} else
{
field =
matcherQuoto.reset(matcherMain.group(1)).replaceAll("\"");
}
strList.add(field);
}
return strList;
}
//测试
public static
void main(String[] args) {
String txt
= "The Thousand,10000, 2700
,,\"10,000\",\"It's \"\"10 Grand\"\",baby\",10K ";
//即 The Thousand,10000, 2700
,,"10,000","It's ""10 Grand"",baby",10K
List
splits = splitCSV(txt);
for
(String s : splits) {
System.out.println(s);
}
}
打印：
2
The Thousand
10000
2700
10,000
It's "10 Grand",baby
10K
