<dependency>
    <groupId>com.googlecode.aviator</groupId>
    <artifactId>aviator</artifactId>
    <version>5.2.0</version>
</dependency>
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-aop</artifactId>
</dependency>

import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.METHOD)
public @interface AviatorValidation {
    String expression(); // Aviator表達(dá)式
    String errorMessage() default "參數(shù)不符合要求"; // 錯(cuò)誤信息
}

import com.googlecode.aviator.AviatorEvaluator;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.reflect.MethodSignature;
import org.springframework.stereotype.Component;

import java.lang.annotation.Annotation;
import java.lang.reflect.Parameter;

@Aspect
@Component
public class ValidationAspect {

    @Around("execution(* com.example.demo..*(.., @AviatorValidation (*), ..))")
    public Object validate(ProceedingJoinPoint joinPoint) throws Throwable {
        MethodSignature signature = (MethodSignature) joinPoint.getSignature();
        Method method = signature.getMethod();

        // 獲取方法的 @AviatorCheck 注解
        AviatorValidation aviatorCheck = method.getAnnotation(AviatorValidation.class);
        if (aviatorCheck != null) {
            // 準(zhǔn)備參數(shù)值
            Object[] args = joinPoint.getArgs();
            String[] parameterNames = signature.getParameterNames();
            Map<String, Object> env = new HashMap<>();

            for (int i = 0; i < parameterNames.length; i++) {
                env.put(parameterNames[i], args[i]);
            }

            // 使用Aviator校驗(yàn)表達(dá)式
            Boolean result = (Boolean) AviatorEvaluator.execute(aviatorCheck.expression(), env);
            if (!result) {
                throw new IllegalArgumentException(aviatorCheck.errorMessage());
            }
        }

        return joinPoint.proceed();  // 繼續(xù)執(zhí)行目標(biāo)方法
    }
}

 @GetMapping("/test")
 @AviatorValidation(expression = "param1 > 0 && param2 < 100", errorMessage = "param1 should be > 0 and param2 < 100")
 public String test(@RequestParam int param1, @RequestParam int param2) {
     return "Validation passed!";
 }