Question

我对Spring很新，遇到RequestMapping的问题。我想学习使用注释，所以我尝试创建一个适合这些的小项目。无论如何，我一直得到404，但据我所知，我做的一切都是正确的。对于一些帮助会非常高兴，在阅读几个教程时无法找到解决方案，这些教程基本相同。谢谢！

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/applicationContext.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>*.htm</url-pattern>
    </servlet-mapping>
    <session-config>
        <session-timeout>
            30
        </session-timeout>
    </session-config>
    <welcome-file-list>
        <welcome-file>redirect.jsp</welcome-file>
    </welcome-file-list>
</web-app>

分派器-servlet.xml中：

<?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:context="http://www.springframework.org/schema/context"
    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">


    <context:component-scan base-package="com.controller" />
    <bean class="org.springframework.web.servlet.mvc.support.ControllerClassNameHandlerMapping"/>


    <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>

Controller＆＃34; MainController.java＆＃34;在com.controller包中：

package com.controller;

import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.stereotype.Controller;
/**
 *
 * @author 
 */

@Controller
public class MainController{

    @RequestMapping("/main")
    public ModelAndView hithere() {

        ModelAndView mav = new ModelAndView ("main");
        mav.addObject("welcomeMessage", "Hi there");

        return mav;
    }
}

然后在Web-inf / jsp文件夹中有一个main.jsp。

Answer 1

将调度程序servlet的url映射更改为：

 <servlet-mapping>
        <servlet-name>dispatcher</servlet-name>
        <url-pattern>/*</url-pattern>
    </servlet-mapping>

或者将您的RequestMapping(value="/main")更改为RequestMapping(value="/main.htm")

Answer 2

哦很好找到了..

因此在web.xml中缺少这个：

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

这个

    $country = 'UNITED STATES OF AMERICA';
    function countryToLowerCase( $country )
    {
        $except = array('of','in');
        $parts = explode(' ', $country);
        $country = null;
        foreach ($parts as $part) {
            if(!in_array( $part, $except))
            {
                    $country .= ucfirst($part) .' ';
                    continue;
            }
            $country .= $part .' ';
        }
        return $country;
    }
    echo countryToLowerCase( strtolower($country));//United States of America

从调度程序移到applikation.xml。没注意这一点，因为netbeans以这种方式生成它并且我信任它：D

Spring @RequestMapping 404

2 个答案: