springmvc 解决中文乱码问题

1. 自定义过滤器

   • 自定义实现Filter接口

   public class MyCharacterFilter implements Filter {
       @Override
       public void init(FilterConfig filterConfig) throws ServletException {
   
       }
   
       @Override
       public void doFilter(ServletRequest servletRequest,
                            ServletResponse servletResponse,
                            FilterChain filterChain) throws IOException, ServletException {
           //这里加入对编码的处理
           servletRequest.setCharacterEncoding("utf-8");
           //放行请求，这个规则和前面讲过的java web的过滤器一样
           filterChain.doFilter(servletRequest, servletResponse);
       }
   
       @Override
       public void destroy() {
   
       }
   }
   

   • 配置web.xml

   <filter>
       <filter-name>myCharacterFilter</filter-name>
       <filter-class>com.web.filter.MyCharacterFilter</filter-class>
   </filter>
   <filter-mapping>
       <filter-name>myCharacterFilter</filter-name>
       <url-pattern>/*</url-pattern>
   </filter-mapping>
   

2. springmvc中的过滤器处理中文

   • 修改web.xml文件

   <!--配置Spring提供的过滤器，解决中文乱码问题-->
   <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>