spring MVC jsp页面EL表达式无效

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转载最新推荐文章于 2026-03-21 00:36:37 发布 2.1k 阅读 AI 写同款· GEO 优化 ›

Spring mvc 实例 --JSTL结合EL实现JSP获取后台List回显界面 JSTL 和 EL 间的关系【详见 java web前端瘦身器】，从该篇博客可以看出，JSTL是java web前台页面标签的集合，形成了一套规范，利用JSTL标签显示数据。EL表达式则是获取数据的工具，形如 ${} ，获取后台数据给标签赋值，从而回显界面。所以两者一个标签，一个标签里的数据，相辅相成。 JSTL标签： 1、常用的JSTL标签：核心标签库包括:out 阅读详情

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ModelAndView’s model value is not displayed in JSP via EL

Problem

In Spring MVC development, developer try to set a value into a model, and display the value in JSP via EL, e.g ${msg}, but it just outputs the result as it is – ${msg}, not the “value” stored in the model. The EL is just not working in JSP, why?

Spring’s Controller

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.AbstractController;

public class ABCController extends AbstractController{

	@Override
	protected ModelAndView handleRequestInternal(HttpServletRequest request,
		HttpServletResponse response) throws Exception {

		ModelAndView model = new ModelAndView("HelloWorldPage");
		model.addObject("msg", "hello world");
		
		return model;
	}
	
}