如何将hashmap从一个jsp传递到另一个jsp，为jqgrid准备json数据

i want to pass the hashmap object to another jsp to prepare the json data for me to create the grid.

我想将hashmap对象传递给另一个jsp,为我准备json数据来创建网格。

in the jsp i am getting the hashmap from the dao java files but i need these hashmap contents to be displayed as a grid. so in order to do this i thought of passing it to another jsp which prepares the json data from hashmap. But i dont find any solution to pass the hashmap to that jsp file. i have to pass these hashmap as post values in grid. jsp file data

在jsp我从dao java文件中获取hashmap但我需要将这些hashmap内容显示为网格。所以为了做到这一点,我想把它传递到另一个jsp,它从hashmap准备json数据。但我没有找到任何解决方案将hashmap传递给该jsp文件。我必须将这些hashmap作为post值传递给grid。 jsp文件数据

    Hashmap groupMap1= GroupMap.getGroupMapModel();
    Hashmap groupMap2 = GroupMap.getGroupMappingNames();

here is the code to create grid

这是创建网格的代码

            jQuery("#list").jqGrid({
                altRows:false
                ,autowidth:true
                ,url:'<%=request.getContextPath()%>/jsp/common/prepareGridData.jsp'
                ,datatype: "json"
                ,height: "100%"
                ,colNames:<%=colNames%>
                ,colModel:<%=colModel.toString()%>
                ,paging: true
                ,rowNum:25
                ,rowList:[25,50,75,100]
                ,loadonce:true
                ,caption: "Group Listing"
                ,pager:"#gridBottom"
                ,multiboxonly:false
                ,multiselect:false
                ,scrollrows:false
                ,shrinkToFit: false
                ,viewrecords:true
                ,postData:{groupMap1:"<%=groupMap1%>",groupMap2:"<%=groupMap2%>"}
            }).navGrid('#page',{edit:false,add:false,del:false});
        }

we cannot get any object thru request.getParameter. Then how can these values be accessed by prepareGrdData.jsp file to get the json data?

我们无法通过request.getParameter获取任何对象。然后,prepareGrdData.jsp文件如何访问这些值以获取json数据?

1 个解决方案

#1

One way may be set those as attribute, like request.setAttribute(key, value);

一种方法可以设置为属性,如request.setAttribute(key,value);

and

request.getAttribute(key);