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Spring Web MVC Project 404 error

 原文  2016-02-04 07:32:32  0   2    java/ eclipse/ spring/ jsp/ spring-mvc

Question

I just created a new project in eclipse. Here is the code.

web.xml 

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.1" 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">
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>/WEB-INF/dispatcher-servlet.xml</param-value>
    </context-param>
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
    <servlet>
        <servlet-name>dispatcher</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <load-on-startup>2</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>dispatcher</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>
    <session-config>
        <session-timeout>
            30
        </session-timeout>
    </session-config>
    <welcome-file-list>
        <welcome-file>index.jsp</welcome-file>
    </welcome-file-list>
</web-app>

dispatcher-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:p="http://www.springframework.org/schema/p"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xmlns:tx="http://www.springframework.org/schema/tx"
       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-3.1.xsd
       http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.1.xsd
       http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.1.xsd 
       http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsd
       http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd ">

    <bean class="org.springframework.web.servlet.mvc.support.ControllerClassNameHandlerMapping"/>

    <!--
    Most controllers will use the ControllerClassNameHandlerMapping above, but
    for the index controller we are using ParameterizableViewController, so we must
    define an explicit mapping for it.
    -->

    <bean id="urlMapping" class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
        <property name="mappings">
            <props>
                <prop key="index.htm">indexController</prop>
            </props>
        </property>
    </bean>

    <bean id="viewResolver"
          class="org.springframework.web.servlet.view.InternalResourceViewResolver"
          p:prefix="/WEB-INF/jsp/"
          p:suffix=".jsp" />

    <!--
    The index controller.
    -->
    <bean name="indexController"
          class="org.springframework.web.servlet.mvc.ParameterizableViewController"
          p:viewName="index" />

</beans>

index.jsp 

<?xml version="1.0" encoding="ISO-8859-1" ?>
<jsp:root xmlns:jsp="http://java.sun.com/JSP/Page" version="2.0">
    <jsp:directive.page contentType="text/html; charset=ISO-8859-1" 
        pageEncoding="ISO-8859-1" session="false"/>
    <jsp:output doctype-root-element="html"
        doctype-public="-//W3C//DTD XHTML 1.0 Transitional//EN"
        doctype-system="http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"
        omit-xml-declaration="true" />
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>Insert title here</title>
</head>
<body>
Insert title here
</body>
</html>
</jsp:root>

MainController.java 

package SpringDemo;

import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;

@Controller
public class MainController {

    @RequestMapping("/index")
    public ModelAndView loginWorld(ModelMap model) {

        return new ModelAndView("Main", "welcomeMessage","Hello Guest! welcome to out site");
    }
}

Main.java 

<%@ page language="java" contentType="text/html; charset=ISO-8859-1" pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
Insert title here
</body>
</html>

Project

在此处输入图片说明

In the above code, I am always getting HTTP Status 404 - /SpringDemo/index error when I try to run it via http://localhost:8080/SpringDemo/index

What is wrong with the code?

EDIT

Libraries used 

aopalliance-1.0
commons-logging-1.1.2
commons-logging-1.2
hibernate-validator-4.1.0.Final
jsch-0.1.49
jstl-api
jstl-impl
log4j-1.2.16
ojdbc6
slf4j-api-1.5.6
slf4j-log4j12-1.5.6
spring-aop-4.1.1.RELEASE-javadoc
spring-aop-4.1.1.RELEASE-sources
spring-aop-4.1.1.RELEASE
spring-aspects-3.2.1.RELEASE
spring-aspects-4.1.1.RELEASE-javadoc
spring-aspects-4.1.1.RELEASE-sources
spring-aspects-4.1.1.RELEASE
spring-beans-3.2.1.RELEASE
spring-beans-4.1.1.RELEASE-javadoc
spring-beans-4.1.1.RELEASE-sources
spring-beans-4.1.1.RELEASE
spring-context-3.2.1.RELEASE
spring-context-4.1.1.RELEASE-javadoc
spring-context-4.1.1.RELEASE-sources
spring-context-4.1.1.RELEASE
spring-context-support-4.1.1.RELEASE-javadoc
spring-context-support-4.1.1.RELEASE-sources
spring-context-support-4.1.1.RELEASE
spring-core-3.2.1.RELEASE
spring-core-4.1.1.RELEASE-javadoc
spring-core-4.1.1.RELEASE-sources
spring-core-4.1.1.RELEASE
spring-expression-3.2.1.RELEASE
spring-expression-4.1.1.RELEASE-javadoc
spring-expression-4.1.1.RELEASE-sources
spring-expression-4.1.1.RELEASE
spring-instrument-4.1.1.RELEASE-javadoc
spring-instrument-4.1.1.RELEASE-sources
spring-instrument-4.1.1.RELEASE
spring-instrument-tomcat-4.1.1.RELEASE-javadoc
spring-instrument-tomcat-4.1.1.RELEASE-sources
spring-instrument-tomcat-4.1.1.RELEASE
spring-jdbc-4.1.1.RELEASE-javadoc
spring-jdbc-4.1.1.RELEASE-sources
spring-jdbc-4.1.1.RELEASE
spring-jms-4.1.1.RELEASE-javadoc
spring-jms-4.1.1.RELEASE-sources
spring-jms-4.1.1.RELEASE
spring-messaging-4.1.1.RELEASE-javadoc
spring-messaging-4.1.1.RELEASE-sources
spring-messaging-4.1.1.RELEASE
spring-orm-4.1.1.RELEASE-javadoc
spring-orm-4.1.1.RELEASE-sources
spring-orm-4.1.1.RELEASE
spring-oxm-4.1.1.RELEASE-javadoc
spring-oxm-4.1.1.RELEASE-sources
spring-oxm-4.1.1.RELEASE
spring-test-4.1.1.RELEASE-javadoc
spring-test-4.1.1.RELEASE-sources
spring-test-4.1.1.RELEASE
spring-tx-4.1.1.RELEASE-javadoc
spring-tx-4.1.1.RELEASE-sources
spring-tx-4.1.1.RELEASE
spring-web-3.2.1.RELEASE
spring-web-4.1.1.RELEASE-javadoc
spring-web-4.1.1.RELEASE-sources
spring-web-4.1.1.RELEASE
spring-webmvc-3.2.1.RELEASE
spring-webmvc-4.1.1.RELEASE-javadoc
spring-webmvc-4.1.1.RELEASE-sources
spring-webmvc-4.1.1.RELEASE
spring-webmvc-portlet-4.1.1.RELEASE-javadoc
spring-webmvc-portlet-4.1.1.RELEASE-sources
spring-webmvc-portlet-4.1.1.RELEASE
spring-websocket-4.1.1.RELEASE-javadoc
spring-websocket-4.1.1.RELEASE-sources
spring-websocket-4.1.1.RELEASE
validation-api-1.1.0.Final

2 answers

solution1
 2  2016-02-04 07:38:35

Try to add to your file dispatcher-servlet.xml this: 

  <mvc:annotation-driven />

This: 

  <context:annotation-config/>

And this: 

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

And change the return ofthe method to a String like this: 

  @RequestMapping("/index")
public String loginWorld(ModelMap model) {

    return "Main";
}

solution2
 2  2016-02-04 07:42:44

Change <load-on-startup> element argument and try again.Also add <context:component-scan> for load your bean.I hope this will working for you.

Like : 

<load-on-startup>1</load-on-startup>

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