java 项目乱码解决（web.xml全局配置编码格式）

  <!-- 乱码解决 -->
  <filter>
    <filter-name>encodingFilter</filter-name>  //过滤器名称
    <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>  //绑定类
    <async-supported>true</async-supported>
    <init-param>
      <param-name>encoding</param-name>
      <param-value>UTF-8</param-value>  //编码格式
    </init-param>
  </filter>
  <filter-mapping>
    <filter-name>encodingFilter</filter-name>
    <url-pattern>/*</url-pattern>  //要过滤的路径
  </filter-mapping>