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java - springMVC配置的controller无法返回jsp文件

当启动完tomcat后,它首先展示的是index.jsp ,当我输入http://localhost:8080/Spring_no_2/时,出现

HTTP Status 404 – Not Found

Type Status Report

Description The origin server did not find a current representation for the target resource or is not willing to disclose that one exists.
  1. 根据spring in action中的springMVC这一章中的demo进行测试,环境是mac下的Ideallij,jkd1.8,tomcat9

  2. 配置好了springMVC,相关的xml文件并且启动tomcat后(省略了配置静态资源和SpitterService类),无法通过访问url使controller返回在WEB-INF/views中的jsp文件

以下是代码文件

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
         version="3.1">

    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>/WEB-INF/applicationContext.xml</param-value>
    </context-param>

    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
    <servlet>
        <servlet-name>spitter</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>spitter</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>

</web-app>

spitter-servlet.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd">



    <!--use annotations to create the mapping between-->
    <!-- url and class deal with request(Controller) -->
    <mvc:annotation-driven/>

    <!--scan the component and auto regist as bean-->
    <context:component-scan base-package="com.springmvc.controller"/>

    <!--Use this bean to map the jsp file according to the name return by Controller-->
    <!--It will automatically add the prefix and suffix to the name string-->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/views/"/>
        <property name="suffix" value=".jsp"/>
    </bean>

</beans>

controller

package com.springmvc.controller;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

/**
 * Created by han on 29/3/2017.
 */
@Controller
public class HomeController {
//    public static final int DEAFAULT_SPITTLES_PER_PAGE = 25;


    public HomeController() {
        System.out.println("-------HomeController init-------");
    }

    @RequestMapping("/")
    public String showHomePage() {

        System.out.println("-------showHomePage Method show-------");


        return "home";
    }
}

我的文件结构是

请问为什么无法使home.jsp呈现出来?

迷茫迷茫2743 天前1217

全部回覆(4)我來回復

  • 伊谢尔伦

    伊谢尔伦2017-04-18 10:56:02

    找到問題所在了,目錄,tomcat配置都對了。
    但是因為在web.xml中的以下程式碼

     <context-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>/WEB-INF/applicationContext.xml</param-value>
        </context-param>
    
        <listener>
            <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
        </listener>

    導致了監聽的配置檔案不讀取spitter-servlet.xml中的配置,
    解決方法有兩個:

    第一:

    是在 中加入spitter-servlet.xml的位址,這樣spitter-servlet.xml和applicationContext.xml中的Bean等設定都會被讀取到。
    在Spring in action 4th edition中說到Whereas DispatcherServlet is expected to load beans containing web components such as controllers, view resolvers, and handler mappings, ContextLoList y is expect to resolvers. tier and data-tier components that drive the back end of the application.
    兩個不同的配置是為了應對不同部分的配置而設置的

    第二:

    就是删除以上代码的配置。会自动读取spitter-servlet.xml中的配置。
    
    
    

    回覆
    0
  • 大家讲道理

    大家讲道理2017-04-18 10:56:02

    親,-------showHomePage Method show-------後台有沒有列印出來?

    回覆
    0
  • 天蓬老师

    天蓬老师2017-04-18 10:56:02

    先看看tomcat配置的對不對。
    localhost:8080可以存取成功嗎?
    再看看showHomePage方法

    回覆
    0
  • 怪我咯

    怪我咯2017-04-18 10:56:02

    預設專案結構web層是使用的webapp目錄,你可以看下部署到tomcat的專案的WEB-INF/views目錄下是否真的存在home.jsp?

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    0
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