java – Spring MVC：在进行AJAX调用后在对话框中显示数据

我是Spring和Web技术的新手.

我有一个表,其中包含一个带超链接的列.当我单击行的超链接时,我需要在对话框中显示行数据以及其他详细信息.我的控制器方法返回一个ModelAndView,它包含我需要显示的数据和显示页面.

问题：

>如何显示对话框？和
>如何将数据传递给对话框？

Table.jsp

<script type="text/javascript">
   function showDialog(ref, date) {

        $ajax({
            type: "POST",
            url: "/example/show.htm",
            data: {
                ref: ref,
                date: date
            }
            success: function(data) {

            },
            error: function(data) {

            }
        });
}
</script>

制图

@RequestMapping(value = "show.htm", method=RequestMethod.POST)
    public ModelAndView show(@RequestParam("ref") String ref, @RequestParam("date") String date, 
            HttpServletRequest request, HttpServletResponse response) {

        ModelAndView modelAndView = new ModelAndView();

        try {
            SampleDTO SampleDTO = new SampleDTO();
            sampleDTO.setDate(sdf.parse(date));
            sampleDTO.setRef(ref);

            SampleDTO billDto =  // server call                    modelAndView.addobject("showBill", sampleDto);

            modelAndView.setViewName("Dialog");
        } 
        return modelAndView;
    }

解决方法:

你的代码是错的,你搞乱了,如果你想使用jQuery和ajax调用,那么不要在你的Spring控制器中使用ModelAndView.而不是那样,使用以下内容并使用Java中的Jackson库将bean或dto作为json返回：

在您的lib项目文件夹中包含此jar：

http://www.java2s.com/Code/JarDownload/jackson/jackson-all-1.9.9.jar.zip

Java代码：

@RequestMapping(value = "businessBill.htm", method = RequestMethod.POST)
@ResponseBody
public String handleBusinessBillDetails(@RequestParam("reference") String billReference, @RequestParam("invoiceDate") String billDate, 
            HttpServletRequest request, HttpServletResponse response) {

    String json = null;        

    try {

        //1. Create 'jackson' object mapper
        ObjectMapper objectMapper = new ObjectMapper();  

        BusinessBillDTO businessBillDTO = new BusinessBillDTO();
        businessBillDTO.setBillDate(sdf.parse(billDate));
        businessBillDTO.setBillReference(billReference);

        BusinessBillDTO billDto = accountStatementBO.getBusinessBillDetails(businessBillDTO);

        //2. Convert your 'bean' or 'dto' as 'json' string
        json = objectMapper.writeValueAsstring(billDto);            

    } catch (Exception ex) {
        LOGGER.error(ex);
    }
    return json;
}

然后,在Table.jsp中将Dialog.jsp中使用的div设置为隐藏,这将是您以后的模态对话框(请注意,span标记中也有一些更改)：

<div id="BusinessBill" style="display:none;">
    <h2>Bill Details</h2>
    <em>Business Ltd</em>
    <div class="row">
        <span class="spanAsLabel">Account number</span>
        <span id="dlg-account-number" class="spanAsLabel"></span>
    </div>
    <div class="row">
        <span class="spanAsLabel">Bill date</span>
        <span id="dlg-bill-date" class="spanAsLabel"></span>
    </div>
</div>

现在修复你的getBusinessBill(..)方法,如下所示：

你也可以使用$.ajax并可能处理更多状态,如onerror和其他状态,但这种方式更简单(至少对我来说,你只需要评估返回的数据是否为null,让我们知道用户 – 如果为null – 那在服务器端发生的事情,可能会显示带有通用消息的警报) – 请阅读评论.

function getBusinessBill(billReference, billInvoiceDate) {

    $.post("/AccountStatement/businessBill.htm", {
        reference: billReference,
        invoiceDate: billInvoiceDate
    }, function (data) {

        /* You can implement more validations for 'data', in my case I just used these 'if' conditionals but can vary. */

        if(data != null) { //returned 'data' is not 'null'

            /* parse 'data' as 'json' object
             * will be good to console.log(data) and take a look. */
            var obj = $.parseJSON(data);

            if(obj != {}) { //check if 'data' is not an empty 'json' object once transformed

               //set the 'data' in the dialog
               $('#dlg-account-number').text(obj.accountNumber);
               $('#dlg-bill-date').text(obj.billDate);

               /* open modal dialog, you can simulate it this way (for this case)
                * but the correct way is to use 'jquery-ui' dialog or any plugin you prefer.
                * At this point you will see the hidden 'div' in a visible way with your 'data'.
                */
               $('#BusinessBill').fadeIn();
            } else {
               //show 'generic' message
               alert('No results found.');
            }
        } else {
           //show 'generic' message
           alert('An error occurred, try again.');
        }
    });

}

最后,如果一切正确,您将在同一页面(Table.jsp)上看到与您的数据的模态对话框,所有这些都是通过ajax调用来避免重定向页面,如(Table.jsp to => Dialog.jsp).