在web.xml文件配置一道
<!--乱码解决-->
<filter>
<filter-name>CharacterEoding</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<!--设置请求中的编码格式-->
<init-param>
<param-name>encoding</param-name>
<param-value>utf-8</param-value>
</init-param>
<!--设置响应回的编码,与请求编码格式一致-->
<init-param>
<param-name>forceEncoding</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>CharacterEoding</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>