Question

我有以下情况：

File '/oname=$INSTDIR\workspace\jetty\work\webapp\WEB-INF\classes\com\sample\service\core\util\SomeModule$SomeModulesData$SomeModulesDataBuilder.class'     '${ADDEDSOURCE}workspace\jetty\work\webapp\WEB-INF\classes\com\sample\service\core\util\SomeModule$SomeModulesData$SomeModulesDataBuilder.class'    ; Added file
File '/oname=$INSTDIR\workspace\jetty\work\webapp\WEB-INF\classes\com\sample\service\core\util\CoolUtil.class'  '${ADDEDSOURCE}workspace\jetty\work\webapp\WEB-INF\classes\com\sample\service\core\util\CoolUtil.class'     ; Added file

我想用* $ class替换* .class名称中的'$'符号（也可以是其他符号）。我可以获取文件名，但只需要一组美元符号。

这是我的例子： https://regex101.com/r/Wa2cF6/2

在Java中，我只想这样做：

public static void main(String[] args) {

    String s = "File '/oname=$INSTDIR\\workspace\\jetty\\work\\webapp\\WEB-INF\\classes\\com\\sample\\service\\core\\util\\SomeModule$SomeModulesData$SomeModulesDataBuilder.class' \t'${ADDEDSOURCE}workspace\\jetty\\work\\webapp\\WEB-INF\\classes\\com\\sample\\service\\core\\util\\SomeModule$SomeModulesData$SomeModulesDataBuilder.class' \t; Added file";
    s = s.replace("\\\\([a-zA-Z0-9_$]+)\\.\\w+'\\s", "$$");
    System.out.println(s);
}

并且期望结果

File '/oname=$INSTDIR\workspace\jetty\work\webapp\WEB-INF\classes\com\sample\service\core\util\SomeModule$$SomeModulesData$$SomeModulesDataBuilder.class'   '${ADDEDSOURCE}workspace\jetty\work\webapp\WEB-INF\classes\com\sample\service\core\util\SomeModule$$SomeModulesData$$SomeModulesDataBuilder.class'  ; Added file

感谢您的帮助。

Answer 1

因此，您只想在类名中替换$符号吗？我肯定会使用索引和StringBuilder类进行较低级别的操作：

private static final String testString =  "File '/oname=$INSTDIR\\workspace\\jetty\\work\\webapp\\WEB-INF\\classes\\com\\sample\\service\\core\\util\\SomeModule$SomeModulesData$SomeModulesDataBuilder.class' \t'${ADDEDSOURCE}workspace\\jetty\\work\\webapp\\WEB-INF\\classes\\com\\sample\\service\\core\\util\\SomeModule$SomeModulesData$SomeModulesDataBuilder.class' \t; Added file";

public static void main(String[] args) {
    System.out.println(replaceDollars(testString));
}

private static final Pattern PATH = Pattern.compile("(\\'[\\S]*)(\\\\[\\w$]+\\.class\\')");

public static String replaceDollars(String string) {
    Matcher m = PATH.matcher(string);
    StringBuilder builder = new StringBuilder();
    int end = 0;

    while (m.find()) {
        builder
                .append(string, end, m.start())
                .append(m.group(1))
                .append(m.group(2).replace("$", "$$"));
        end = m.end();
    }

    builder.append(string, end, string.length());

    return builder.toString();
}

使用以下正则表达式：(\'[\S]*)(\\[\w$]+\.class\')在输入字符串中查找文件。

正则表达式在特定字符串中替换FileName处的单个Char

1 个答案: