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这里是我用来提取函数名Java的正则表达式 - 为了解析函数名和参数名称 - 抛出PatternSyntaxException:未关闭的性格
正则表达式
^(\w+(\s+)?){2,}\([^[email protected]#$+%^]*\)
代码
final static String functionNameRegex = "^(\\w+(\\s+)?){2,}\\([^[email protected]#$+%^]*\\)";
final static String functionString = "public void render(int screenNo, String infoText){}";
final Pattern fnPattern = Pattern.compile(functionNameRegex, Pattern.CASE_INSENSITIVE | Pattern.COMMENTS);
final Matcher fnMatcher = fnPattern.matcher(functionString);
while (fnMatcher.find()) {
System.out.println("Full match: " + fnMatcher.group(0));
for (int i = 1; i <= fnMatcher.groupCount(); i++) {
System.out.println("Group " + i + ": " + fnMatcher.group(i));
}
}
正则表达式但是,它会引发PatternSyntaxException。不知道是什么原因导致这里的问题,因为我能够以其他语言获得所需的输出。
痕迹:
Exception in thread "main" java.util.regex.PatternSyntaxException: Unclosed character class near index 30
^(\w+(\s+)?){2,}\([^[email protected]#$+%^]*\)
^
at java.util.regex.Pattern.error(Pattern.java:1955)
at java.util.regex.Pattern.clazz(Pattern.java:2548)
at java.util.regex.Pattern.sequence(Pattern.java:2063)
at java.util.regex.Pattern.expr(Pattern.java:1996)
at java.util.regex.Pattern.compile(Pattern.java:1696)
at java.util.regex.Pattern.<init>(Pattern.java:1351)
at java.util.regex.Pattern.compile(Pattern.java:1054)
at TestRegex.main(TestRegex.java:28)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:144)
新来的正则表达式,帮助我出去rechanging此正则表达式来识别和组的参数名。
谢谢。这有帮助。请提供有关重新更改此正则表达式以捕获参数名称的输入。 –
@surendhar_s查看http://ideone.com/rujQfw,对不起,我只是不确定你需要什么。 –