spring mvc深入研究：RequestHeader 获取特定字段值

 <?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" 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>SpringMVC01</display-name>
    
  
    
     <!-- 处理中文乱码 -->
    
     <filter>
    
     <filter-name>encodingFilter</filter-name>
    
     <filter-class>org.springframewo