Spring MVC过滤器-字符集过滤器，解决中文乱码问题

post: 在web.xml

<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>

get:在Tomcat中

<Connector port="8009" enableLookups="false"redirectPort="8443"
debug="0" protocol="AJP/1.3"URIEncoding="UTF-8"/>

也可以直接在web.xml中一次性修改

<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>
<init-param>
<param-name>forceEncoding</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>CharacterEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>

相当于
request.setCharacterEncoding("UTF-8");
response.setCharacterEncoding("UTF-8");