list<PageData>传jsp隐藏域，在传回java

最新推荐文章于 2021-02-13 12:25:50 发布

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最新推荐文章于 2021-02-13 12:25:50 发布

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文章标签： java json

本文展示了一个使用Java向JSP传递数据的具体示例。通过一个具体的后台控制器方法，介绍了如何将不同类型的Java对象（如PageData和JSONArray）传递到JSP页面，并展示了如何在JSP中接收这些数据。

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java传jsp，代码如下：

     /**去修改页面
     * @param
     * @throws Exception
     */
    @RequestMapping(value="/goEdit")
    public ModelAndView goEdit(Model model)throws Exception{
        ModelAndView mv = this.getModelAndView();
        PageData pd = new PageData();
        pd = this.getPageData();
        //获取树形列表
        JSONArray arr = JSONArray.fromObject(goodstypeService.listAllGoodstypenourl("0"));    //此处填写货品类型第一级ID即可；
        String json = arr.toString();
        json = json.replaceAll("GOODSTYPE_ID", "id").replaceAll("GOODSTYPE_PARENTID", "pId").replaceAll("GOODSTYPE_NAME", "name").replaceAll("subDict", "nodes").replaceAll("hasDict", "checked").replaceAll("treeurl", "url");
        model.addAttribute("zTreeNodes", json);
        mv.addObject("GOODSTYPE_ID",0);        //0代表根目录
        
        pd = receivingstandardService.findById(pd);    //根据ID读取
        //根据收获标准查询所有的物料
        List<PageData> wllist = receivingstandardmaterielService.findwlByRECEIVINGSTANDARD_ID(pd);
        //根据收获标准查询所有的工厂
        List<PageData> gclist = receivingstandardfactoryService.findgcByRECEIVINGSTANDARD_ID(pd);
        mv.setViewName("cgxtpt/receivingstandard/receivingstandard_edit");
        mv.addObject("msg", "edit");
        mv.addObject("wllist", JSONArray.fromObject(wllist));     　　　　　　----  重点是这里
        mv.addObject("gclist", JSONArray.fromObject(gclist));
        mv.addObject("pd", pd);
        return mv;
    }

前台jsp接收：

<input type="hidden" name="wllist" id="wllist" value='${wllist }'>
 <input type="hidden" name="gclist" id="gclist" value='${gclist }'>

form表单提交给java处理

    /**修改
     * @param
     * @throws Exception
     */
    @RequestMapping(value="/edit")
    public ModelAndView edit() throws Exception{
        logBefore(logger, Jurisdiction.getUsername()+"修改Receivingstandard");
        if(!Jurisdiction.buttonJurisdiction(menuUrl, "edit")){return null;} //校验权限
        ModelAndView mv = this.getModelAndView();
        PageData pd = new PageData();
        pd = this.getPageData();
        receivingstandardService.edit(pd);
        /**操作记录*/
        Session session = Jurisdiction.getSession();
        User user = (User) session.getAttribute(Const.SESSION_USER);
        PageData pd1 = new PageData();
        pd1.put("RECEIVINGSTANDARDRECORD_ID", this.get32UUID());
        pd1.put("RECEIVINGSTANDARD_ID", pd.getString("RECEIVINGSTANDARD_ID"));
        pd1.put("UPDATERID", user.getUSER_ID());
        pd1.put("UPDATENAME", user.getNAME());
        pd1.put("UPDATETIME", DateUtil.getTime());
        receivingstandardrecordService.save(pd1);
        /**操作记录结束*/
        //根据收获标准查询所有的物料
        List<PageData> wllist = receivingstandardmaterielService.findwlByRECEIVINGSTANDARD_ID(pd);
        //根据收获标准查询所有的工厂
        List<PageData> gclist = receivingstandardfactoryService.findgcByRECEIVINGSTANDARD_ID(pd);
        //之前的物料
        List<JSONObject> oldwllist = JSONArray.fromObject(pd.get("wllist")) ;      ----------重点是这里
        //之前的工厂
        List<JSONObject> oldgclist = JSONArray.fromObject(pd.get("gclist")) ;
        //之前的物料、工厂全部去掉
        String msg2 = orderdataService.sendwmszjornojson(oldwllist, oldgclist,"N");
        //现在的物料、工厂全部加上
        String msg = orderdataService.sendwmszjorno(wllist, gclist,"Y");
        
        System.out.println("物料。。。。。。。"+msg+msg2);
        mv.addObject("msg","success");
        mv.setViewName("save_result");
        return mv;
    }