springmvc 解决中文乱码问题

自定义过滤器

• 自定义实现Filter接口

public class MyCharacterFilter implements Filter {
    @Override
    public void init(FilterConfig filterConfig) throws ServletException {

    }

    @Override
    public void doFilter(ServletRequest servletRequest,
                         ServletResponse servletResponse,
                         FilterChain filterChain) throws IOException, ServletException {
        //这里加入对编码的处理
        servletRequest.setCharacterEncoding("utf-8");
        //放行请求，这个规则和前面讲过的java web的过滤器一样
        filterChain.doFilter(servletRequest, servletResponse);
    }

    @Override
    public void destroy() {

    }
}

• 配置web.xml

<filter>
    <filter-name>myCharacterFilter</filter-name>
    <filter-class>com.web.filter.MyCharacterFilter</filter-class>
</filter>
<filter-mapping>
    <filter-name>myCharacterFilter</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>

springmvc中的过滤器处理中文

• 修改web.xml文件

<!--配置Spring提供的过滤器，解决中文乱码问题-->
<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>