nullvalueinnestedpathexception.java

来自「一个关于Spring框架的示例应用程序,简单使用,可以参考.」· Java 代码 · 共 51 行

/*
 * Copyright 2002-2004 the original author or authors.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */ 

package org.springframework.beans;

/**
 * Exception thrown when navigation of a valid nested property
 * path encounters a NullPointerException.
 *
 * <p>For example, navigating "spouse.age" could fail because the
 * spouse property of the target object has a null value.
 *
 * @author Rod Johnson
 */
public class NullValueInNestedPathException extends InvalidPropertyException {

	/**
	 * Create a new NullValueInNestedPathException.
	 * @param beanClass the offending bean class
	 * @param propertyName the offending property
	 */
	public NullValueInNestedPathException(Class beanClass, String propertyName) {
		super(beanClass, propertyName, "Value of nested property '" + propertyName + "' is null");
	}

	/**
	 * Create a new NullValueInNestedPathException.
	 * @param beanClass the offending bean class
	 * @param propertyName the offending property
	 * @param msg the detail message
	 */
	public NullValueInNestedPathException(Class beanClass, String propertyName, String msg) {
		super(beanClass, propertyName, msg);
	}

}