表单post，get到 springMVC后台乱码

一. 前台表单直接post或get,后台以request.getParameterMap()或request.getParameter()的形式接收

注意：前台，springmvc过滤器，以及jsp，编译器编码全部以utf-8为例

以request.getParameterMap()为例

注意：这里是一个从HttpServletRequest中获取参数的方法，至于request则是从类似于

@RequestMapping("/tradePortal/ReceiveCommands")
public ModelAndView receiveCommands(HttpServletRequest request, HttpServletResponse response){}

这样的方法中获取

public static Map<String,String> getParamters(HttpServletRequest request){
        logger.info("开始获取请求参数");
        Map<?,?> paramterMap = request.getParameterMap();
        Map<String ,String> paraMap = new ConcurrentHashMap<String, String>();
        for (Map.Entry entry :
                paramterMap.entrySet()) {
            if (Array.getLength(entry.getValue())<1||StringUtil.isEmpty(((String)(Array.get(entry.getValue(),0))))){
                paraMap.put((String)entry.getKey(),null);
            }else {
                if (request.getMethod().equalsIgnoreCase("get")){
                    try {
                        paraMap.put((String)entry.getKey(),new String(((String)(Array.get(entry.getValue(),0))).getBytes("ISO-8859-1"),"utf-8"));
                    } catch (UnsupportedEncodingException e) {
                        e.printStackTrace();
                    }
                }else {
                    paraMap.put((String)entry.getKey(),(String)(Array.get(entry.getValue(),0)));
                }
            }
        }
        logger.info("参数获取完毕。参数为："+ JSON.toJSONString(paraMap));
        return paraMap;
    }