Http请求传json数据中文乱码问题详解编程语言

业务场景：调easyui的dialog打开一个弹窗，传参是用json封装的，而且有中文，然后在极速模式是正常的，在ie11测试发现中文出现乱码了

var params = JSON.stringify(writParamList); 
top.dialog({ 
             id: 'noticeList', 
             title:'列表', 
             width:900, 
            height:500, 
            url:'${root}/notice/multiNoticeList.do?params='+params, 
            onclose:function(){ 
                        //location.reload(); 
             } 
}).showModal();

后台获取json数据，并转成list，然后在ie模式，获取到的json数据都出现中文乱码，然后导致json不能解析报错了

String params = request.getParameter("params"); 
        logger.info("文书参数转换前:》》"+params); 
        params=StringEscapeUtils.unescapeJava(params); 
        logger.info("文书参数转换后:》》"+params); 
        ObjectMapper mapper = new ObjectMapper(); 
        JavaType javaType = mapper.getTypeFactory().constructParametricType(List.class, FormModel.class); 
        /*List<FormModel> writUnionFormList =  
                JSON.parseArray(params, FormModel.class);*/ 
        List<FormModel> writUnionFormList=new ArrayList<FormModel>(); 
        try { 
            writUnionFormList = (List<FormModel>)mapper.readValue(params, javaType); 
        } catch (JsonParseException e) { 
            e.printStackTrace(); 
        } catch (JsonMappingException e) { 
            e.printStackTrace(); 
        } catch (IOException e) { 
            e.printStackTrace(); 
        }

针对上面问题，和同事讨论，最开始打算base64加密来传，然后发现base64加密中文出现问题，所以改成URLEncode的方式，前端加密两遍，后台在解密一遍

var params = JSON.stringify(writParamList); 
top.dialog({ 
             id: 'noticeList', 
             title:'列表', 
             width:900, 
            height:500, 
            url:'${root}/notice/multiNoticeList.do?params='+encodeURI(encodeURI(params)), 
            onclose:function(){ 
                        //location.reload(); 
             } 
}).showModal();

后台代码修改，解码一遍，然后发现在ie也正常

String params = request.getParameter("params"); 
        logger.info("文书参数转换前:》》"+params); 
        //params=StringEscapeUtils.unescapeJava(params); 
//      byte[] buffer=Base64Utils.decodeFromString(params); 
//      params = new String(buffer); 
         try { 
             params=URLDecoder.decode(params,"utf-8"); 
        } catch (UnsupportedEncodingException e1) { 
            e1.printStackTrace(); 
        } 
        logger.info("文书参数转换后:》》"+params); 
        ObjectMapper mapper = new ObjectMapper(); 
        JavaType javaType = mapper.getTypeFactory().constructParametricType(List.class, ApprWritUnionFormModel.class); 
        /*List<FormModel> writUnionFormList =  
                JSON.parseArray(params, FormModel.class);*/ 
        List<FormModel> writUnionFormList=new ArrayList<FormModel>(); 
        try { 
            writUnionFormList = (List<FormModel>)mapper.readValue(params, javaType); 
        } catch (JsonParseException e) { 
            e.printStackTrace(); 
        } catch (JsonMappingException e) { 
            e.printStackTrace(); 
        } catch (IOException e) { 
            e.printStackTrace(); 
        }