UTF8解决乱码问题，springmvc 这个需要版本4.0以上

 <!-- UTF8解决乱码问题 -->
	    <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter">  
        <property name="messageConverters">  
            <list>  
                <bean class="org.springframework.http.converter.StringHttpMessageConverter">  
                    <property name="supportedMediaTypes">  
                        <list>  
                            <value>text/html;charset=UTF-8</value>  
                        </list>  
                    </property>  
                </bean>  
            </list>  
        </property>  
    </bean>  

 注意以上配置需要放到<mvc:annotation-driven />之前，否则无效。

Controller 参数乱码：

在web中加入过滤器

<!-- 设置编码格式为utf-8 -->
	<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>