Springmvc中@RequestParam传值中文乱码解决方案

首先jsp表单里面有一些参数要传到controller中，通过以下方法接收： 

@RequestMapping(value="/orderPaper")
    public ModelAndView orderPaper(
            @RequestParam("paperName")String paperName,
            @RequestParam("openStartTime")String openStartTime,
            @RequestParam("openEndTime")String openEndTime ) {
        ModelAndView mv = new ModelAndView();
mv.addObject("paperName", paperName);    //这里面传过来的是中文，接收到的是一堆笑得很开心的的乱码
        mv.setViewName("/college/orderPaper");
        return mv;
    }

怎么处理呢？通过下面的工具类： 

public class EncodingTool {
    public static String encodeStr(String str) {
        try {
            return new String(str.getBytes("ISO-8859-1"), "UTF-8");
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
            return null;
        }
    }
}

这样，只要把controller中改为

mv.addObject("paperName",EncodingTool.encodeStr(paperName));

在网上有的说还需要在web.xml里面配置： 

<!-- 字符过滤器 -->
  <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>
  </filter>
  <filter-mapping>
    <filter-name>encodingFilter</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>

我试过，其实不配置也能把爱笑的乱码解决！