《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,"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
