今天完成的任务:

    1.收尾任务五,调试的时候解决了一点小bug.

报错原因是 

   @RequestMapping(value = "/home", method = RequestMethod.GET)

    public String index(Model model, HttpServletRequest request) throws Exception {

        List<Student> studentList = studentService.query();

与

    @RequestMapping(value = "/home", method = RequestMethod.GET)

    public String home(Model model) {

         return "home";

    }

重复了,导致spring无法初始化报错入下:

2:02(FrameworkServlet.java:457)[ERROR] Context initialization failed

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping#0': Initialization of bean failed; nested exception is java.lang.IllegalStateException: Ambiguous mapping found. Cannot map 'studentController' bean method 

public java.lang.String com.jnshu.rest.demo2.controller.StudentController.home(org.springframework.ui.Model)

to {[/home],methods=[GET],params=[],headers=[],consumes=[],produces=[],custom=[]}: There is already 'studentController' bean method

public java.lang.String com.jnshu.rest.demo2.controller.StudentController.index(org.springframework.ui.Model,javax.servlet.http.HttpServletRequest) throws java.lang.Exception mapped.

大家一定要细心啊,这要是从报错找毛病怎么也联系不到是  @RequestMapping(value = "/home"重复了.计算机真的很笨的.它不会和你说你这里重复了什么的?当然经验多了也会一下就找到.报一次错就会涨一点经验.

    2.探究org.springframework.web.servlet.ModelAndView;发现Model指的是从后台取到的数据.View指的是前端的jsp字段.但是它如何从后端传到前端,编程jsp页面显示的数值呢.它的过程如何实现的?

另外org.springframework.ui.Model;这个接口是如何实现的?

    3.晚上查找任务六相关资料,尝试再任务五整合Memcach.参与永刚的分享主要涉及下面几块内容,同时自己对任务三的理解也比较有条理了.记下来方便以后复习