中文

public static void chineseStr(){
        StringBuilder sb = new StringBuilder();
        String s = "";
        String pattern = "[\\u4e00-\\u9fa5]+";
        Pattern r = Pattern.compile(pattern);
        Matcher m = r.matcher(s);
        while (m.find()) {
            sb.append(m.group());
        }
        System.out.println(sb.toString());

    }

单引号

public static void singleStr(){
    StringBuilder sb = new StringBuilder();
    String s = "fed'dsd'";
    String pattern = "\\'(.*?)\\'+";
    Pattern r = Pattern.compile(pattern);
    Matcher m = r.matcher(s);
    while (m.find()) {
        sb.append(m.group());
    }
    System.out.println(sb.toString());
}

双引号里的内容

 public static void doubleStr(){
        StringBuilder sb = new StringBuilder();
        String s = "fe\"d\"dfrtt\"tttg\"sd'";
        String pattern = "\"(.*?)\"+";
        Pattern r = Pattern.compile(pattern);
        Matcher m = r.matcher(s);
        while (m.find()) {
            sb.append(m.group());
        }
        System.out.println(sb.toString());
    }

大括号里的内容

public static void bracketsStr(){
    StringBuilder sb = new StringBuilder();
    String s = "dfdfd规范化{风格}化";
    String pattern = "\\{(.*?)\\}";
    Pattern r = Pattern.compile(pattern);
    Matcher m = r.matcher(s);
    while (m.find()) {
        sb.append(m.group());
    }
    System.out.println(sb.toString());
}