使用ModelAttribute实现页面数据自动填充

@Controller
public class BookController {

    @RequestMapping(value = "/book", method = RequestMethod.GET)
    public ModelAndView traditionalMethod(HttpServletRequest request) {
        request.setAttribute("title", "SpringMVC");
        request.setAttribute("author", "Apache");
        return new ModelAndView("/comm/book");
    }
}

<%@ page language="java" cOntentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>




    
    


    
        书名: 

        作者: 

        
    

@Controller
public class BookController {

    @ModelAttribute
    public void populateModel(Model model) {
        model.addAttribute("title", "SpringMVC");
        model.addAttribute("author", "Apache");
    }

    @RequestMapping(value = "/book", method = RequestMethod.GET)
    public ModelAndView method1() {
        return new ModelAndView("/comm/book");
    }

    @RequestMapping(value = "/book1", method = RequestMethod.GET)
    public ModelAndView method2() {
        return new ModelAndView("/comm/book");
    }
}

@RequestMapping(value = "/book1", method = RequestMethod.GET)
public ModelAndView method1(Model model) {
    Book book = new Book("SpringMVC", "Apache");
    model.addAttribute("book", book);
    return new ModelAndView("/comm/book");
}

@RequestMapping(value = "/book2", method = RequestMethod.GET)
public Book method2(Model model) {
    return new Book("SpringMVC", "Apache");
}