Question

我很难根据参数传递显示数据。下面是我的基于序列的代码。我的问题是，什么时候调试，它传递给第二页jsp的控制器，它检索的参数是courseId，但是当它不显示jsp和控制器中的数据时获取数据..我知道我的问题很长，但请帮助我。第一页将显示可用课程列表。当用户点击课程时，它将进入控制器

@RequestMapping(value="MregisteredClassesDetail.phone")
public final ModelAndView registeredClassesDetail(final HttpServletRequest request,
        final HttpServletResponse response,HttpSession session) {
    ModelAndView mav = new ModelAndView();
    log.debug("Registered Classes Detail:");
    log.debug("CourseId:"+request.getParameter("courseId"));
    request.setAttribute("page",  AlteraCommonConstant.DEFAULT_PAGE);
    request.setAttribute("row",  AlteraCommonConstant.DEFAULT_PAGE_SIZE);
    request.setAttribute("courseId","courseId");
    System.out.println(">>>>>>>>>>>>>>>> Registered Classes Detail");
    mav.setViewName("mobile/MregisteredClassesDetail.jsp");
    return mav;
}

然后它将转到jsp第二页..

$('#MregisteredClassesDetails').live('pageshow', function(){
    var rowInput = "1";
    var pageInput = "1";
    var idInput = document.getElementById("courseId");

    $.ajax({
     url: '${pageContext.request.contextPath}/getRegisteredClassesDetails.html',
     data: ( {rows : rowInput , page : pageInput, courseId : idInput}),
     type: 'POST',

     success: function(json_results){
       $('#list').append('<ul data-role="listview" data-inset="true"</ul>');
       listItems = $('#list').find('ul');
       html  = '#################################################################################################';
       html += '<h1>' +json_results.courseName+'</h1>';
       html += '#################################################################################################';
       html += '<br> Registration #    : '+json_results.regNo+'</br>';
       html += '<br> Status            : '+json_results.regStatus+'</br>';
       html += '<br> Location          : '+json_results.courseLoc+'</br>';
       html += '<br> Start Date        : '+json_results.startDate+'</br>';
       html += '<br> Registered Person : '+json_results.fullName+'</br>';
       html += '<br> Rate              : '+json_results.rate+'</br>';
       listItems.append(html);

       $('#list ul').listview();
       $.mobile.pageLoading(true);      
    }
});
});

和html

<form name="ViewClassForm" method="POST">
<input name="courseId" type="hidden" value="${MregisteredClassesDetail.courseId}"/>
</form>
<div data-role="page" id="MregisteredClassesDetails" data-add-back-btn="true">
<div data-role="header" data-position="fixed" data-theme="b"><h1></h1>
</div><!-- /header -->
<div data-role="content">
    <div id="courseDetail"> 
        <ul data-role="listview" data-inset="true" id="list"></ul>
    </div> 
</div><!-- /content -->

然后它将返回控制器以检索数据..

@RequestMapping(value = "getRegisteredClassesDetails.html", method = RequestMethod.POST)
public @ResponseBody CustomPagedResultResponse getRegisteredClassesDetails(
        HttpServletRequest request,HttpSession session) {
    CustomPagedResultResponse paging = new CustomPagedResultResponse();

    log.debug("getRegisteredClassesData.html:");  
    log.debug("rows:"+request.getParameter("rows"));
    log.debug("courseId:"+request.getParameter("courseId"));
    log.debug("page:"+request.getParameter("page"));
    log.debug("sidx:"+request.getParameter("sidx"));
    log.debug("sord:"+request.getParameter("sord"));

    String page = request.getParameter("page");
    int pageSize = new Integer(request.getParameter("rows")).intValue();
    StringBuffer condition = new StringBuffer();
    if (request.getParameter("sidx") != null && !request.getParameter("sidx").equals("")) {
        condition.append(request.getParameter("sidx"));
        condition.append(" ");
    }
    if (request.getParameter("sord") != null && !request.getParameter("sord").equals("")) {
        condition.append(request.getParameter("sord"));
    }
    log.debug("condition: " + condition.toString());
       log.debug("page:"+page);
       log.debug("row:"+pageSize);

    String courseType = "%";

    UserProfile userProfile = (UserProfile)session.getAttribute("userProfile");


    //////////////////////////////////////////////////////
    // Retrieve  Total Record first
    ///////////////////////////////////////////////////////
    RegisteredClassesSearch search = new RegisteredClassesSearch();
    search.setLanguage("ENU");
    search.setLoginRowId(userProfile.getContactRowId());
    search.setRegNo(null);
    search.setAction("1");
    search.setCourseType(courseType);
    search.setPage(null);
    search.setPageSize(null);
    search.setOrderBy(null);

    Integer recordCount = registeredClassesService.getTotalAccounts(search);
    log.debug("*****Training Controller Total record:"+recordCount);
    System.out.println("*****Training Controller Total record:"+recordCount);

    //////////////////////////////////////////////////////
    // Retrieve  Total Record first
    ///////////////////////////////////////////////////////
    if(recordCount>0){

        System.out.println("******** Login Id:"+userProfile.getContactRowId());
        System.out.println("******** Course Type:"+courseType);
        System.out.println("******** Page Size:"+pageSize);
        System.out.println("******** Page:"+page);
        System.out.println("******** Order By:"+condition);

        List<RegisteredClassesTest> registeredClassesView = registeredClassesService.getAccounts(search);

        paging.setRows(registeredClassesView);
    }else{
        paging.setRows(null);
    }


    paging.setRecords(String.valueOf(recordCount));
    paging.setPage(page);
    int total = recordCount % pageSize == 0 ? recordCount / pageSize : recordCount / pageSize + 1;
    paging.setTotal(String.valueOf(total));

    return paging;
}

Answer 1

我认为在这种情况下你有一个拼写错误。

在您的第一个控制器中，您将在请求参数中设置课程ID，如下所示。

request.setAttribute("courseId","courseId");

据我说它应该是

request.setAttribute("courseId",some int value);

您没有在 courseId 中添加一些实际值。

希望这会对你有所帮助。

干杯。

无法根据传递参数显示数据？

1 个答案: