java 校验特殊字符正则表达式

在Java中，可以使用正则表达式来校验特殊字符。以下是几个使用正则表达式校验特殊字符的例子:

例子一：

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class PatternUtil {
    public static void main(String[] args) {
        String name = "中山\\浩二/";
        Pattern userNameRegex = Pattern.compile("[^a-zA-Z0-9-_~!@]");
        Matcher m = userNameRegex.matcher(name);
        if (m.find()) {
            System.out.println(name + "中含有特殊字符！");
        } else {
            System.out.println(name + "中不含有特殊字符！");
        }
    }
}

例子二：

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class PatternUtil {
    public static void main(String[] args) {
        String input = "!!!!!!!!@@@";
        String pattern = "^[!@]+$";
        Pattern p = Pattern.compile(pattern);
        Matcher m = p.matcher(input);
        if (m.matches()) {
            System.out.println("input只由!和@组成");
        } else {
            System.out.println("input包含!和@以外的字符");
        }
    }
}

例子三：

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class PatternUtil {
    public static void main(String[] args) {
        String input = "hello world";
        String pattern = "^[a-zA-Z0-9~!@#$%&*()-_]+$";
        Pattern p = Pattern.compile(pattern);
        Matcher m = p.matcher(input);
        if (m.matches()) {
            System.out.println("input验证成功");
        } else {
            System.out.println("input验证失败");
        }
    }
}

以上是几个可以校验特殊字符的Java正则表达式的例子。你可以根据自己的需求选择适合的正则表达式进行校验。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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