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java - springmvc 无法扫描到controller层
高洛峰
高洛峰 2017-04-18 10:49:38
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各种404，请求/user/showUser不能进入controller，整了一天，快疯了，求组各位大神！直接上代码
项目结构：

web.xml

<?xml version="1.0" encoding="UTF-8"?>

<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
    id="WebApp_ID" version="3.0">

    <display-name>Archetype Created Web Application</display-name>

    <!-- Spring 配置文件路径，此处可将Spring MVC的相关配置内容配置到Spring的配置文件applicationContext.xml中，共享同一个配置文件即可 -->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:applicationContext.xml</param-value>
    </context-param>

    <!-- Spring 监听器 配置 -->
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
    <listener>
        <listener-class>org.springframework.web.context.request.RequestContextListener</listener-class>
    </listener>

    <!-- 字符集 过滤器 -->
    <filter>
        <filter-name>CharacterEncodingFilter</filter-name>
        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
        <init-param>
            <param-name>encoding</param-name>
            <param-value>UTF-8</param-value>
        </init-param>
        <init-param>
            <param-name>forceEncoding</param-name>
            <param-value>true</param-value>
        </init-param>
    </filter>
    <filter-mapping>
        <filter-name>CharacterEncodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

    <!-- Spring mvc 配置，配置文件名称默认为{servlet-name}-servlet.xml，路径默认在/WEB-INF/下 -->
    <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:springmvc/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>
        <url-pattern>/</url-pattern>
    </servlet-mapping>
    
    <welcome-file-list>
        <welcome-file>index.html</welcome-file>
    </welcome-file-list>
</web-app>

applicationContent.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: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">
    <mvc:annotation-driven />
    <!-- 自动扫描 -->
    <
    <context:component-scan base-package="com.chs">
        <context:exclude-filter type="annotation"
            expression="org.springframework.stereotype.Controller" />
    </context:component-scan
    <!-- 引入配置文件 -->
    <bean id="propertyConfigurer"
        class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
        <property name="location" value="classpath:dataSource.properties" />
    </bean>

    <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:mybatisMappingConfig/*.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.chs.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>

</beans>

spring-mvc.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"

xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:context="http://www.springframework.org/schema/context"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"
xsi:schemaLocation="http://www.springframework.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans.xsd
    http://www.springframework.org/schema/mvc
    http://www.springframework.org/schema/mvc/spring-mvc.xsd
    http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">
<!-- 添加注解驱动 -->
<mvc:annotation-driven />
<!-- 自动扫描该包，使SpringMVC认为包下用了@controller注解的类是控制器 -->
<context:component-scan base-package="com.chs.controller"
    use-default-filters="false">
    <context:include-filter type="annotation"
        expression="org.springframework.stereotype.Controller" />
</context:component-scan>

<!--避免IE执行AJAX时，返回JSON出现下载文件 -->
<bean id="mappingJacksonHttpMessageConverter"
    class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter">
    <property name="supportedMediaTypes">
        <list>
            <value>text/html;charset=UTF-8</value>
        </list>
    </property>
</bean>
<!-- 启动SpringMVC的注解功能，完成请求和注解POJO的映射 -->
<bean
    class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
    <property name="messageConverters">
        <list>
            <ref bean="mappingJacksonHttpMessageConverter" /> <!-- JSON转换器 -->
        </list>
    </property>
</bean>

<bean
    class="org.springframework.web.servlet.view.InternalResourceViewResolver">
    <property name="order" value="10"></property>
    <property name="prefix" value="/WEB-INF/page/"></property>
    <property name="suffix" value=".html"></property>
    <property name="contentType" value="text/html;charset=utf-8"></property>
</bean>

<!-- ===================================================== -->
<!-- ViewResolver For FreeMarker -->
<!-- ===================================================== -->
<bean id="freemarkerResolver"
    class="org.springframework.web.servlet.view.freemarker.FreeMarkerViewResolver">
    <property name="order" value="0" />
    <property name="suffix" value=".html" />
    <property name="contentType" value="text/html;charset=utf-8" />
    <property name="viewClass">
        <value>org.springframework.web.servlet.view.freemarker.FreeMarkerView
        </value>
    </property>
</bean>
<!-- ===================================================== -->
<!-- ViewResolver For FreeMarkerConfigurer -->
<!-- ===================================================== -->
<bean id="freemarkerConfig"
    class="org.springframework.web.servlet.view.freemarker.FreeMarkerConfigurer">
    <property name="templateLoaderPath">
        <value>/WEB-INF/page/</value>
    </property>
    <property name="freemarkerSettings"><!-- 设置FreeMarker环境属性 -->
        <props>
            <prop key="template_update_delay">5</prop><!--刷新模板的周期，单位为秒 -->
            <prop key="default_encoding">UTF-8</prop><!--模板的编码格式 -->
            <prop key="locale">UTF-8</prop><!-- 本地化设置 -->
            <prop key="datetime_format">yyyy-MM-dd HH:mm:ss</prop>
            <prop key="time_format">HH:mm:ss</prop>
            <prop key="number_format">0.####</prop>
            <prop key="boolean_format">true,false</prop>
            <prop key="whitespace_stripping">true</prop>
            <prop key="tag_syntax">auto_detect</prop>
            <prop key="url_escaping_charset">UTF-8</prop>
        </props>
    </property>
</bean>

<!-- 处理静态资源 -->
<mvc:resources mapping="/css/**/" location="/css/" />
<mvc:resources mapping="/imgages/**/" location="/imgges/" />
<mvc:resources mapping="/js/**/" location="/js/" />

<!-- 文件上传配置 -->
<bean id="multipartResolver"
    class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
    <!-- 默认编码 -->
    <property name="defaultEncoding" value="UTF-8" />
    <!-- 上传文件大小限制为31M，31*1024*1024 -->
    <property name="maxUploadSize" value="32505856" />
    <!-- 内存中的最大值 -->
    <property name="maxInMemorySize" value="4096" />
</bean>

</beans>

controller

package com.chs.controller;

import java.util.Map;

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.chs.base.util.ReflectionUtil;
import com.chs.model.User;
import com.chs.service.IUserService;  
 
@Controller  
@RequestMapping("/user")  
public class UserController {  
   @Resource  
   private IUserService userService;  
   
   @RequestMapping("/showUser")  
   public String toIndex(HttpServletRequest request,Model model){
       System.out.println("------------------------");
       Map<String, Object> paramMap = ReflectionUtil.po2Map(request);
       User user = this.userService.getUserById(paramMap);  
       return "showUser";  
   }  
}
高洛峰
高洛峰

拥有18年软件开发和IT教学经验。曾任多家上市公司技术总监、架构师、项目经理、高级软件工程师等职务。 网络人气名人讲师，...

全部回覆(1)
黄舟
黄舟2017-04-18 10:51:38 1樓

會不會是jsp裡的請求路徑問題，建議試試改成絕對路徑試試

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