在web.xml中添加代码:
<!-- 定义Filter -->
<filter>
<!-- Filter的名字 -->
<filter-name>encodingFilter</filter-name>
<!-- Filter的实现类 -->
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<!-- init-prama为注入的set参数 -->
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
<init-param>
<param-name>forceEncoding</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<!-- 定义Filter拦截的URL地址 -->
<filter-mapping>
<!-- Filter的名字 -->
<filter-name>encodingFilter</filter-name>
<!-- Filter负责拦截的URL 全部以/的请求,如果<url-pattern>/*.action </>,将会以拦截*.action的请求-->
<url-pattern>/*</url-pattern>
</filter-mapping>
原文:https://www.cnblogs.com/pipilong/p/14333070.html