springmvc+mybatis整合maven项目跳转页面404问题

Question

controller

package com.cn.hnust.controller;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;

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

import com.cn.hnust.pojo.User;
import com.cn.hnust.service.IUserService;

@Controller
@RequestMapping("/user")
public class UserController {
@Resource
private IUserService userService;

@RequestMapping("/showUser")
public String toIndex(HttpServletRequest request,Model model){
    int userId = Integer.parseInt(request.getParameter("id"));
    User user = this.userService.getUserById(userId);
    model.addAttribute("user", user);
    return "showUser";
}

}

web.xml

<?xml version="1.0" encoding="UTF-8"?>
xmlns="http://java.sun.com/xml/ns/javaee"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
version="3.0">
Archetype Created Web Application
<!-- Spring和mybatis的配置文件 -->

contextConfigLocation
classpath:spring-mybatis.xml

<!-- 编码过滤器 -->

encodingFilter
org.springframework.web.filter.CharacterEncodingFilter
true

encoding
UTF-8



encodingFilter
/*

<!-- Spring监听器 -->

org.springframework.web.context.ContextLoaderListener

<!-- 防止Spring内存溢出监听器 -->

org.springframework.web.util.IntrospectorCleanupListener

<!-- Spring MVC servlet -->
<servlet>
    <servlet-name>SpringMVC</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:spring-mvc.xml</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
    <async-supported>true</async-supported>
</servlet>
<servlet-mapping>
    <servlet-name>SpringMVC</servlet-name>
    <!-- 此处可以可以配置成*.do，对应struts的后缀习惯 -->
    <url-pattern>/</url-pattern>
</servlet-mapping>
<welcome-file-list>
    <welcome-file>/index.jsp</welcome-file>
</welcome-file-list>
<!-- 配置SESSION超时，单位是分钟 -->
<session-config>
    <session-timeout>15</session-timeout>
</session-config>

springmvc-mybatis

<?xml version="1.0" encoding="UTF-8"?>
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"
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/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-4.0.xsd">
<!-- 自动扫描 -->

<!-- 引入配置文件 -->
class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">

<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
    destroy-method="close">
    <property name="driverClassName" value="${driver}" />
    <property name="url" value="${url}" />
    <property name="username" value="${username}" />
    <property name="password" value="${password}" />
    <!-- 初始化连接大小 -->
    <property name="initialSize" value="${initialSize}"></property>
    <!-- 连接池最大数量 -->
    <property name="maxActive" value="${maxActive}"></property>
    <!-- 连接池最大空闲 -->
    <property name="maxIdle" value="${maxIdle}"></property>
    <!-- 连接池最小空闲 -->
    <property name="minIdle" value="${minIdle}"></property>
    <!-- 获取连接最大等待时间 -->
    <property name="maxWait" value="${maxWait}"></property>
</bean>

<!-- spring和MyBatis完美整合，不需要mybatis的配置映射文件 -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
    <property name="dataSource" ref="dataSource" />
    <!-- 自动扫描mapping.xml文件 -->
    <property name="mapperLocations" value="classpath:com/cn/hnust/mapping/*.xml"></property>
</bean>

<!-- DAO接口所在包名，Spring会自动查找其下的类 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
    <property name="basePackage" value="com.cn.hnust.dao" />
    <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>
</bean>

<!-- (事务管理)transaction manager, use JtaTransactionManager for global tx -->
<bean id="transactionManager"
    class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
    <property name="dataSource" ref="dataSource" />
</bean>

大神们帮忙看看哪里出错了，谢谢

Answer 1

访问地址应该是ip:port/项目名/user/showUser，然后打个断点看下方法进去没，如果进去了，那就是最后return的那个页面不存在或者rerurn的页面路径错误