springmvc 解決中文亂碼問題

1. 自定義過濾器

   • 自定義實現Filter介面

   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 {
           //這裡加入對編碼的處理
           servletRequest.setCharacterEncoding("utf-8");
           //放行請求，這個規則和前面講過的java web的過濾器一樣
           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中的過濾器處理中文

   • 修改web.xml檔案

   <!--配置Spring提供的過濾器，解決中文亂碼問題-->
   <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>