配置spring-servlet.xml

<!-- 解决Spring MVC ResponseBody 乱码问题 -->
<bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter" >   
    <property name="messageConverters">    
        <list>    
            <bean class = "org.springframework.http.converter.StringHttpMessageConverter">    
                <property name = "supportedMediaTypes">   
                    <list>    
                        <value>text/plain;charset=UTF-8</value>    
                    </list>    
                </property>    
            </bean>    
        </list>    
    </property>    
</bean>
<!-- 编码处理过滤器,保存中文到数据库出现乱码 -->
<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>

如果还是会出现乱码，修改Tomcat的配置文件server.xml，添加URIEncoding="UTF-8"

打开 server.xml 文件，更改两个地方。

//配置一：添加 URIEncoding="UTF-8"
<Connector URIEncoding="UTF-8" connectionTimeout="20000" port="8081" protocol="HTTP/1.1" redirectPort="8443"/>

//配置二：添加 URIEncoding="UTF-8"
<Connector URIEncoding="UTF-8" port="8009" protocol="AJP/1.3" redirectPort="8443"/>

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