初学Spring,上课老师讲解的是ModelAndView,而Spring4.0实战书上用Model,那么他们之间的区别是什么呢?
首先要去看源代码咯,书上只有这个<import org.springframework.ui.Model>导包过程,其实起源代码在
<spring-context-4.1.3.RELEASE-sources.jar>中;
源代码中发现Model是一个接口,Model实际上就是个Map(key-value的集合),
书上用的Model addAttribute(Object attributeValue);此方法Spring框架会自动为他生成key,假如是value值是Spittle,那么key为spittleList
package org.springframework.ui; import java.util.Collection; import java.util.Map; public interface Model { Model addAttribute(String attributeName, Object attributeValue); Model addAttribute(Object attributeValue); Model addAllAttributes(Collection<?> attributeValues); Model addAllAttributes(Map<String, ?> attributes); Model mergeAttributes(Map<String, ?> attributes); boolean containsAttribute(String attributeName); Map<String, Object> asMap(); }
时间: 2024-10-29 19:08:10