使用org.hibernate.validator.internal.cfg.context在方法上创建约束

import org.hibernate.validator.internal.cfg.context.MethodConstraintMappingContext;

public class MyClass {
    public void myMethod(@NotNull @Size(min = 2, max = 10) String param) {
        // 方法体
    }
    
    public static void main(String[] args) {
        MethodConstraintMappingContext methodContext = new MethodConstraintMappingContext();
        methodContext.method(MyClass.class, "myMethod")
                .parameter(0)
                .constraint(NotNull.class)
                .constraint(Size.class)
                .min(2)
                .max(10);
        
        // 其他约束配置
        
        // 创建验证器
        Validator validator = Validation.byDefaultProvider()
                .configure()
                .addMapping(methodContext.getMapping())
                .buildValidatorFactory()
                .getValidator();
        
        // 执行验证
        MyClass myObject = new MyClass();
        Set<ConstraintViolation<MyClass>> violations = validator.validate(myObject);
        
        // 处理验证结果
        for (ConstraintViolation<MyClass> violation : violations) {
            System.out.println(violation.getMessage());
        }
    }
}