SpringMVC中Maven/web.xml常用配置笔记

1.pom.xml配置：Maven可能存在资源过滤的问题，即配置如下↓

<build>
   <resources>
       <resource>
           <directory>src/main/java</directory>
           <includes>
               <include>**/*.properties</include>
               <include>**/*.xml</include>
           </includes>
           <filtering>false</filtering>
       </resource>
       <resource>
           <directory>src/main/resources</directory>
           <includes>
               <include>**/*.properties</include>
               <include>**/*.xml</include>
           </includes>
           <filtering>false</filtering>
       </resource>
   </resources>
</build>

2.web.xml配置

<!--1.注册servlet-->
 <servlet>
     <servlet-name>SpringMVC</servlet-name>
     <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
     <!--通过初始化参数指定SpringMVC配置文件的位置，进行关联-->
     <init-param>
         <param-name>contextConfigLocation</param-name>
         <param-value>classpath:springmvc-servlet.xml</param-value>
     </init-param>
     <!-- 启动顺序，数字越小，启动越早 -->
     <load-on-startup>1</load-on-startup>
 </servlet>

 <!--所有请求都会被springmvc拦截 -->
 <servlet-mapping>
     <servlet-name>SpringMVC</servlet-name>
     <url-pattern>/</url-pattern>
 </servlet-mapping>

3.resources下的springmvc-servlet.xml配置

<?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: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.xsd
       http://www.springframework.org/schema/context
       https://www.springframework.org/schema/context/spring-context.xsd
       http://www.springframework.org/schema/mvc
       https://www.springframework.org/schema/mvc/spring-mvc.xsd">
    <!-- 自动扫描包，让指定包下的注解生效,由IOC容器统一管理 ，让这个包下的所有注解生效-->
    <context:component-scan base-package="com.kuang.controller"/>
    <!-- 让Spring MVC不处理静态资源 -->
    <mvc:default-servlet-handler />
    <!--
  支持mvc注解驱动
      在spring中一般采用@RequestMapping注解来完成映射关系
      要想使@RequestMapping注解生效
      必须向上下文中注册DefaultAnnotationHandlerMapping
      和一个AnnotationMethodHandlerAdapter实例
      这两个实例分别在类级别和方法级别处理。
      而annotation-driven配置帮助我们自动完成上述两个实例的注入。
   -->
    <mvc:annotation-driven/>

    <!-- 视图解析器 -->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"
          id="internalResourceViewResolver">
        <!-- 前缀 -->
        <property name="prefix" value="/WEB-INF/jsp/" />
        <!-- 后缀 -->
        <property name="suffix" value=".jsp" />
    </bean>
</beans>

   <!-- 只要用了json就用该配置统一处理乱码 -->
    <mvc:annotation-driven>
        <mvc:message-converters register-defaults="true">
            <bean class="org.springframework.http.converter.StringHttpMessageConverter">
                <constructor-arg value="UTF-8"/>
            </bean>
            <bean class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
                <property name="objectMapper">
                    <bean class="org.springframework.http.converter.json.Jackson2ObjectMapperFactoryBean">
                        <property name="failOnEmptyBeans" value="false"/>
                    </bean>
                </property>
            </bean>
        </mvc:message-converters>
    </mvc:annotation-driven>