Wicket 7 [WebPage] - jquery请求创建新实例WebPage

时间:2018-04-13 19:27:01

标签: javascript jquery ajax wicket

我的应用程序有一个在客户端运行的websocket客户端,我正在使用websocket上传文件。

我有一个wicket WebPage,它有两种上传USB文件的方式(自动和输入类型文件) 当我的页面被实例化时,它的实例为“X”。 当wicket组件发出ajax请求时,我的页面有实例“X”。 当通过javascript代码发出请求时,处理发生在“X”中,但是在处理wicket之后创建新实例“Y”而没有在“X”中处理数据,并向用户显示实例Y.它总是在一个新的ajax(javascript代码)请求。

使用Javascript:

$.ajax({
        url : postUrl,
        type : 'post',
        cache : false,
        data :data,
        processData: false, 
        contentType: false, 
        complete : function(xhr, status) {
            $("#messagemWs").html("");
            wsBu.stopBusca();
        }
    }); 

Ajax行为:

public class WsFilesAjaxBehavior extends AbstractDefaultAjaxBehavior {

    private static final long serialVersionUID = 1L;

    public static final String WS_CALBACK = "my:wsupload.callback";

    private WsFilesAjaxBehaviorCallback callback;

    public WsFilesAjaxBehavior(WsFilesAjaxBehaviorCallback callback) {
    super();
    this.callback = callback;
    }

    public void setCallback(WsFilesAjaxBehaviorCallback callback) {
        this.callback = callback;
    }



    @Override
    protected void onComponentTag(ComponentTag tag) {
    tag.put(WS_CALBACK, getCallbackUrl().toString());
    super.onComponentTag(tag);
    }

    private void buildFileUploadList(List<FileItem> fileItemsRequest, List<FileUpload> fileItems) {
    for (FileItem fileItem : fileItemsRequest) {
        fileItems.add(new FileUpload(fileItem));
    }
    }

    private void getRequestFiles(final RequestCycle requestCycle, AjaxRequestTarget target) {

    final ServletWebRequest webRequest = (ServletWebRequest) requestCycle.getRequest();

    Map<String, List<FileItem>> multiPartRequestFiles = null;

    try {
        MultipartServletWebRequest multiPartRequest = webRequest.newMultipartWebRequest(Bytes.megabytes(1), "UploadInfo");
        multiPartRequest.parseFileParts();
        multiPartRequestFiles = multiPartRequest.getFiles();
    } catch (FileUploadException e) {
        e.printStackTrace(System.out);
        return;
    }

    List<FileUpload> fileUploads  = new ArrayList<>();

    if (multiPartRequestFiles != null && !multiPartRequestFiles.isEmpty()) {
        for (Entry<String, List<FileItem>> entry : multiPartRequestFiles.entrySet()) {
        System.out.println(entry.getKey());
        buildFileUploadList(entry.getValue(), fileUploads);
        }
    }


    callback.webSocketCallback(fileUploads, target);


//  target.appendJavaScript("alert('Processado!');");  
    }



    @Override
    protected void respond(AjaxRequestTarget target) {

    RequestCycle requestCycle = RequestCycle.get();
    getRequestFiles(requestCycle, target);
    }
}

想法?

1 个答案:

答案 0 :(得分:1)

您需要传递特殊的Wicket-Ajax请求参数。查看Wicket Ajax行为发送的确切名称。

AFAIR他们是:Wicket-Ajax = true和Wicket-Base-Url =某事。请参阅wicket-ajax-jquery.js以了解如何为第二个创建值。