我有一个我写的正则表达式:
value='[A-Za-z]+\\,[0-9]+\\,([A-Za-z0-9]+)\\,([A-Za-z0-9]+)'>[A-Za-z0-9]+\\s-\\s(.*)?\\s\\(
它工作得相当好，但问题是它的最后总是匹配所有东西..
例如，它应该适用于书籍，我正在以下方面对其进行测试:
value='C,201301,F110,JEWL1050'>JEWL1050 - Industry Skills I (F110)</option>
value='C,201301,F114,JEWL1050'>JEWL1050 - Industry Skills I (F114)</option>
value='C,201301,F114,JEWL1054'>JEWL1054 - Jewellery Rendering & Illustra (F114)</option>
value='C,201301,F110,JEWL2029'>JEWL2029 - Production Techniques B (F110)</option>
value='C,201301,F114,JEWL2029'>JEWL2029 - Production Techniques B (F114)</option>
value='C,201301,LIAD,LANG9066'>LANG9066 - Italian For Beginners (LIAD)</option>
value='C,201301,T302,LAW1151'>LAW1151 - Canandian & Environmental Law (T302)</option>
value='C,201301,T305,LAW1151'>LAW1151 - Canandian & Environmental Law (T305)</option>
value='C,201301,F402,LAW1152'>LAW1152 - International Law & Agreements (F402)</option>
value='C,201301,T302,LAW3201'>LAW3201 - Protection Legislation (T302)</option>
value='C,201301,T303,LAW3201'>LAW3201 - Protection Legislation (T303)</option>
value='C,201301,T304,LAW3201'>LAW3201 - Protection Legislation (T304)</option>
所以对于第一本书，它应该捕获 F110作为第 1 组，JEWL1050作为第 2 组，和 Industry Skills I作为第 3 组..
但是，它正确捕获了前两组，但没有捕获最后一组。它捕获 - Industry Skills I (F110)</option>相反..
有什么办法可以修复我的正则表达式吗？我似乎根本无法完成最后一组。 请帮我。先谢谢你。
最佳答案
理论上，这应该按原样工作。
这是您建议的正则表达式(由于工具的性质与 Java 代码相比，\\ 更改为 \)应用于示例输入时:http://regex101.com/r/hL8pZ8
此工具还提供了一个“Java”复选框，甚至还提供了相应的 Java 代码，尽管没有固定链接，因此您必须输入正则表达式(再次使用 \\ 而不是 \) 和自己的示例数据:http://www.myregextester.com/index.php
也就是说，为了后代，这里是它的输出:
Raw Match Pattern:
value='[A-Za-z]+\,[0-9]+\,([A-Za-z0-9]+)\,([A-Za-z0-9]+)'>[A-Za-z0-9]+\s-\s(.*)?\s\(
Java Code Example:
import java.util.regex.Pattern;
import java.util.regex.Matcher;
class Module1{
public static void main(String[] asd){
String sourcestring = "source string to match with pattern";
Pattern re = Pattern.compile("value='[A-Za-z]+\\,[0-9]+\\,([A-Za-z0-9]+)\\,([A-Za-z0-9]+)'>[A-Za-z0-9]+\\s-\\s(.*)?\\s\\(");
Matcher m = re.matcher(sourcestring);
int mIdx = 0;
while (m.find()){
for (int groupIdx = 0; groupIdx < m.groupCount()+1; groupIdx++){
System.out.println( "[" + mIdx + "][" + groupIdx + "] = " + m.group(groupIdx));
}
mIdx++;
}
}
}
$matches Array:
(
[0] => Array
(
[0] => value='C,201301,F110,JEWL1050'>JEWL1050 - Industry Skills I (
[1] => value='C,201301,F114,JEWL1050'>JEWL1050 - Industry Skills I (
[2] => value='C,201301,F114,JEWL1054'>JEWL1054 - Jewellery Rendering & Illustra (
[3] => value='C,201301,F110,JEWL2029'>JEWL2029 - Production Techniques B (
[4] => value='C,201301,F114,JEWL2029'>JEWL2029 - Production Techniques B (
[5] => value='C,201301,LIAD,LANG9066'>LANG9066 - Italian For Beginners (
[6] => value='C,201301,T302,LAW1151'>LAW1151 - Canandian & Environmental Law (
[7] => value='C,201301,T305,LAW1151'>LAW1151 - Canandian & Environmental Law (
[8] => value='C,201301,F402,LAW1152'>LAW1152 - International Law & Agreements (
[9] => value='C,201301,T302,LAW3201'>LAW3201 - Protection Legislation (
[10] => value='C,201301,T303,LAW3201'>LAW3201 - Protection Legislation (
[11] => value='C,201301,T304,LAW3201'>LAW3201 - Protection Legislation (
)
[1] => Array
(
[0] => F110
[1] => F114
[2] => F114
[3] => F110
[4] => F114
[5] => LIAD
[6] => T302
[7] => T305
[8] => F402
[9] => T302
[10] => T303
[11] => T304
)
[2] => Array
(
[0] => JEWL1050
[1] => JEWL1050
[2] => JEWL1054
[3] => JEWL2029
[4] => JEWL2029
[5] => LANG9066
[6] => LAW1151
[7] => LAW1151
[8] => LAW1152
[9] => LAW3201
[10] => LAW3201
[11] => LAW3201
)
[3] => Array
(
[0] => Industry Skills I
[1] => Industry Skills I
[2] => Jewellery Rendering & Illustra
[3] => Production Techniques B
[4] => Production Techniques B
[5] => Italian For Beginners
[6] => Canandian & Environmental Law
[7] => Canandian & Environmental Law
[8] => International Law & Agreements
[9] => Protection Legislation
[10] => Protection Legislation
[11] => Protection Legislation
)
)
关于java - 匹配书名的正则表达式——组，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/19442757/