POST请求体显示异常

@RequestMapping("/testRequestBody")
    public String testRequestBody(@RequestBody String body, HttpServletRequest request) throws UnsupportedEncodingException {
        body = URLDecoder.decode(body, "UTF-8");
        System.out.println(body);
        return "success";
    }

如果不加body = URLDecoder.decode(body, "UTF-8")的话，
显示出来是username=%E6%80%BB&age=22

在web.xml也设置了编码的filter,

<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>

前端用的jsp吗？指定编码了吗

https://blog.csdn.net/u014424628/article/details/48255263 参考下