Java正则表达式替换双引号内的双引号

Question

输入字符串是:“引号内的外部字符串””
输出应该是:"outer string inside a quote "

请建议使用任何正则表达式来查找内部双引号并使用 Java 替换为空格。

Answer 1

您可以这样尝试，不用正则表达式，并且在一次迭代中:

/*
 * I assume that if after quote ther is character like "a then it is
 * beggining of cite. Rest quotes are closing ones.
 */
public static String removeInnerQuotes(String data) {

    StringBuilder sb = new StringBuilder();
    int quoteCounter = 0;
    char[] array = data.toCharArray();
    for (int i = 0; i < array.length; i++) {
        if (array[i] == '"') {
            if (i + 1 < array.length
                    && (
                            (array[i + 1] >= 'a' && array[i + 1] <= 'z') 
                        || 
                            (array[i + 1] >= 'A' && array[i + 1] <= 'Z')
                        )
                ){
                quoteCounter++;
                if (quoteCounter == 1)
                    sb.append('"');
            }
            else{
                quoteCounter--;
                if (quoteCounter == 0)
                    sb.append('"');
            }

        } else
            sb.append(array[i]);
    }
    return sb.toString();
}

public static void main(String[] args) {
    String data = "\"outer string \"inside a quote\" abc\" something outside quote, and again \"outer string \"inside a quote\" def \"";
    System.out.println(removeInnerQuotes(data));
}

输出:

“引号 abc 内的外部字符串” 引号外的东西，再次“引号 def 内的外部字符串”