spring 小知识

 

1.处理器映射DefaultAnnotationHandlerMapping和

处理器适配器AnnotationMethodHandlerAdapter在3.1后都被标识为@Deprecated，建议不再使用。

替代者为RequestMappingHandlerAdapter.

 

2.POST中文乱码解决方案

spring Web MVC框架提供了org.springframework.web.filter.CharacterEncodingFilter用于解决POST方式造成的中文乱码问题，具体配置如下：

<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>
</filter>
<filter-mapping>
    <filter-name>CharacterEncodingFilter</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>

 

3.在Spring配置文件中配置ViewResolver

	<!-- 对模型视图名称的解析，即在模型视图名称添加前后缀  id="JSPviewResolver" -->
     <bean id="jspViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
          <property name="cache" value="false"/>
          <property name="prefix" value="/WEB-INF/page/"/>
          <property name="suffix" value=".jsp"/>
          <property name="contentType" value="text/html;charset=UTF-8"/>
          <property name="viewClass" value="org.springframework.web.servlet.view.JstlView" />
          <property name="order" value="0"/>
    </bean>

 prefix和suffix：查找视图页面的前缀和后缀（前缀[逻辑视图名]后缀），比如传进来的逻辑视图名为test，则该该jsp视图页面应该存放在“WEB-INF/page/test.jsp”

 

4.Spring mvc 配置(web.xml)

 

   <servlet>
		<description>spring mvc servlet</description>
		<servlet-name>DispatcherServlet</servlet-name>
		<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
		<init-param>
			<description>spring mvc 配置文件</description>
			<param-name>contextConfigLocation</param-name>
			<param-value>classpath:config/spring-mvc.xml</param-value>
		</init-param>
		<load-on-startup>1</load-on-startup>
	</servlet>
	
	<servlet-mapping>
		<servlet-name>DispatcherServlet</servlet-name>
		<url-pattern>*.do</url-pattern>
	</servlet-mapping>


<context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath*:/config/applicationContext*.xml</param-value>
    </context-param>

    <!-- Creates the Spring Container shared by all Servlets and Filters -->
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>

    <listener>
        <listener-class>com.java.test.authentication.SessionListener</listener-class>
    </listener>
    <session-config>
        <session-timeout>30</session-timeout>
    </session-config>

 5.@Request 和 @ReponseBody 使用了HttpMessageConverter机制.

StringHttpMessageConverter ---字符串

MappingJacksonHttpMessageConverter ----json

ByteArrayHttpMessageConverter ----字节数组

MarshallingHttpMessageConverter -----xml

 

6.当这样配置时viewResolver中suffix配置成html

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

 

在web.xml

 

1>当配置成 /

    <servlet-mapping>
        <servlet-name>spring</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>

 这个时候就需要加上

 <servlet-mapping>
        <servlet-name>default</servlet-name>
        <url-pattern>*.html</url-pattern>
    </servlet-mapping>

 2>当配置成*.do

 <servlet-mapping>
        <servlet-name>spring</servlet-name>
        <url-pattern>*.do</url-pattern>
    </servlet-mapping>

 不需要这个了

<servlet-mapping>
        <servlet-name>default</servlet-name>
        <url-pattern>*.html</url-pattern>
    </servlet-mapping>

当viewResolver中的suffix配置成jsp

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

就没有上面那些分别了