SpEL 正则符操作

首先这个系列的本篇博客参照油管Spring expression Language教学视频Regular expressions而写。

• Matching with regular expression is done using the matches keyword
• Regular expression syntax is similar to corresponding syntax in Java language.

同样非常的简单，这是一个邮箱验证的例子

public class Student {
    private String email;

    public String getEmail() {
        return email;
    }

    public void setEmail(String email) {
        this.email = email;
    }
}

public class EmailValidator {
    private Boolean isValidEmail;

    public Boolean getValidEmail() {
        return isValidEmail;
    }

    public void setValidEmail(Boolean validEmail) {
        isValidEmail = validEmail;
    }
}

xml里的正则也会单独拎出来

可以看到正如开头所说的需要mathes关键字，而且同样可以说不仅是similar完全是same

运行Demo吧

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class EmailValidatorDemo {
    public static void main(String[] args) {
        ApplicationContext applicationContext = new ClassPathXmlApplicationContext("regular.xml");
        EmailValidator emailValidator = applicationContext.getBean("emailValidator", EmailValidator.class);
        System.out.println(emailValidator.getValidEmail());
    }
}