我的輸入是這樣的:拍攝集體吃一些字符
line 1
**ER1.RIAA.SOMPSFIO(LIAOEE) UTGD788 FDSJOFUZZÄ line2
JNDJZSDS ER1.RIAA.SIMEDFUA(AUDD) YIRIHFIH1465EZZÄ
line 3
UJZRJOERERÃLDE,UIE='UJ1.DHZKZ5.OZDEZN98.AAERRE',I=DZEDE POPZEOE**
我想只得到字符段,即:
ER1.RIAA.SOMPSFIO
ER1.RIAA.SIMEDFUA
UJ1.DHZKZ5.OZDEZN98.AAERRE
我的解決辦法是:
try {
StringBuilder sb = new StringBuilder();
String line = br.readLine();
while (line != null) {
nrligne++;
int counter = 0;
for (int i=0; i<line.length(); i++) {
if(line.charAt(i) == '.') {
counter++;
}
}
if (counter == 2) {
if (line.matches("^.*[A-Z0-9]+\\..[A-Z1-9]+.*$")){
line= removeTroublesomeCharacters(line);
System.out.println("ligne vaut "+line);
Pattern dsnPattern = Pattern.compile("^.*([A-Z0-9]+)\\..([A-Z1-9]+)\\..([A-Z1-9]+).*$");
Matcher m = dsnPattern.matcher(line);
if (m.matches()) {
String part1 = m.group(1);
String part2 = m.group(2);
String part3 = m.group(3);
System.out.println("part1 vaut "+part1);
System.out.println("part2 vaut "+part2);
System.out.println("part2 vaut "+part3);
}
}
現在的結果是
ligne vaut ER1.RIAA.SOMPSFIO(LIAOEE) UTGD788
part1 vaut 1
part2 vaut IAA
part2 vaut OMPSFIO
ligne vaut PZFDSJOFUZZÃâ ER1.RIAA.SIMEDFUA(AUDD) UOOO88
part1 vaut 1
part2 vaut IAA
part2 vaut IMEDFUA
ligne vaut UJZRJOERERÃLDE,UIE='UJ1.DHZKZ5.OZDEZN98',I=DZEDE POPZEOE
part1 vaut 1
part2 vaut HZKZ5
part2 vaut ZDEZN98
文件輸入:http://uploadhero.co/dl/PWBLhi7d 我不明白爲什麼正則表達式吃每個字符的開始?有人可以幫我解決這個問題嗎?
你仍然必須在正則表達式本身兩個時期。你不打算只有一個? – Obicere
@Obicere哎呀。修正了謝謝:) –