得到警告为“ [org.springframework.web.servlet.PageNotFound]（默认任务1）没有GET / ProjectFE /的映射”

Question

因此，正如标题所述，我遇到一个错误：“ [org.springframework.web.servlet.PageNotFound]（默认任务1）没有GET / ProjectFE /的映射”，我该如何解决呢？代码也没有错误。

这是我的代码：

web.xml文件-

 l - length changing input control
    **f - filtering input**
    t - The table
    i - Table information summary
    p - pagination control
    r - processing display element

    **f is for filter , so we can remove it.**

        $('#example').dataTable( {
          "dom": 'lrtip'
        } );

spring-config.xml文件：

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee 
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">

<!-- The definition of the Root Spring Container shared by all Servlets 
    and Filters -->
<context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>
        /WEB-INF/spring-config.xml
    </param-value>
</context-param>

<!-- Creates the Spring Container shared by all Servlets and Filters -->
<listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>

<!-- Processes application requests -->
<servlet>
    <servlet-name>appServlet</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>/WEB-INF/spring-config.xml</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
</servlet>

<servlet-mapping>
    <servlet-name>appServlet</servlet-name>
    <url-pattern>/</url-pattern>
</servlet-mapping>

homepage.java文件：

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

<annotation-driven />

<resources mapping="/resources/**" location="/resources/" />

<beans:bean 
 class="org.springframework.web.servlet.view.InternalResourceViewResolver">
    <beans:property name="prefix" value="/views/" />
    <beans:property name="suffix" value=".jsp" />
 </beans:bean>

     <context:component-scan    base-package="controller" />        

 </beans:beans>

在服务器上运行代码后，这就是我得到的：

package controller;

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

@Controller
public class HomeController {
        @RequestMapping(value="/", method=RequestMethod.GET)
    public String home()
    {
       return "homepage";
    }

 }

项目结构：  

Answer 1

首先像这样安排您的web.xml

    <?xml version="1.0" encoding="UTF-8"?>
    <web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee 
    http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">


    <!-- Processes application requests -->
    <servlet>
        <servlet-name>appServlet</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>

    <servlet-mapping>
        <servlet-name>appServlet</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>

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

在定义contex-param时，您无需使用init-param相同的xml文件。 现在在spring-config.xml

中进行一些更改

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

<mvc:annotation-driven/>

<resources mapping="/resources/**" location="/resources/" />

<beans:bean 
 class="org.springframework.web.servlet.view.InternalResourceViewResolver">
    <beans:property name="prefix" value="/Views/" />
    <beans:property name="suffix" value=".jsp" />
 </beans:bean>

  <context:component-scan    base-package="controller" />        
 </beans:beans>

仔细查看第<beans:property name="prefix" value="/Views/" />行。您的文件夹名称是Views，但是您定义了view。这就是为什么您可能会出错的原因。

请大声喊叫。