一开始我在web.xml中添加如下过滤器:
```xml
<filter>
<filter-name>encodingFilter</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>encodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
```
正常这样就可以解决乱码了的,但还是不行
后面我又在在Spring MVC配置文件的视图解析器里配置了contentType属性:
```xml
<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
<property name="prefix" value="/WEB-INF/views/"/>
<property name="suffix" value=".jsp"/>
<property name="contentType" value="text/html;charset=UTF-8"/>
</bean>
```
结果还是不行,后面找了好久发现是我的jsp页面编码格式没有定义
加上代码:
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
问题解决。