nullargumentsnotallowedbeforeadvice.java

来自「一些很有用的spring的书籍」· Java 代码 · 共 24 行

package com.apress.springbook.chapter03;

import org.springframework.aop.MethodBeforeAdvice;
import java.lang.reflect.Method;

public class NullArgumentsNotAllowedBeforeAdvice implements MethodBeforeAdvice {
  public void before(Method method, Object[] arguments, Object target)
      throws Throwable {
    if (arguments == null || arguments.length == 0) {
      return;
    }
    
    for (int i = 0; i < arguments.length; i++) {
      Object argument = arguments[i];
      if (argument == null) {
        throw new IllegalArgumentException(
          "Value for argument [" + i + "] is required but not present " +
          "for method [" + method + "]!"
        );
      }
    }
  }
}