采用dwr ajax和struts开发文件上传进度条

<servlet-name>dwr-invoker</servlet-name>

<display-name>DWR Servlet</display-name>

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<servlet-class>uk.ltd.getahead.dwr.DWRServlet</servlet-class>

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<init-param> 字串5

<param-name>debug</param-name>

<param-value>false</param-value> 字串1

</init-param>

<init-param> 字串9

<param-name>logLevel</param-name> 字串5

<param-value>WARN</param-value> 字串4

</init-param> 字串7

</servlet>

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<servlet-mapping>

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<servlet-name>dwr-invoker</servlet-name> 字串5

<url-pattern>/dwr/*</url-pattern> 字串8

</servlet-mapping> 字串5

编写struts的MultipartRequestHandler ：AjaxMultipartRequestHandler 字串8

实现 MultipartRequestHandler接口并在struts-config.xml的controller中替换默认的multipartClass 字串9

<controller> 字串7

<set-property property="multipartClass" 字串2

value="org.springside.components.ajaxupload.AjaxMultipartRequestHandler" />

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</controller> 字串8

其实这个类AjaxMultipartRequestHandler编写很简单，把struts的src源码中的org.apache.struts.upload.CommonsMultipartRequestHandler.java修改一下就可以了： 字串2

在public void handleRequest(HttpServletRequest request)

throws ServletException {

方法中把定义factory之前的那几行代码注释掉然后写入

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UploadListener listener = new UploadListener(request, 30);

FileItemFactory factory = new MonitoredDiskFileItemFactory(listener); 字串7

之后再注释掉

// upload.setSizeThreshold((int) getSizeThreshold(ac)); 字串6

// upload.setRepositoryPath(getRepositoryPath(ac));

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这个类就算写完了

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编写struts上传类 字串6

就用你原来编写的struts上传类 字串5

上传方法代码段示例：

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/**

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* 上传文件

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*/ 字串5

public ActionForward upload(ActionMapping mapping, ActionForm form,

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HttpServletRequest request, HttpServletResponse response)

throws Exception { 字串6

String path = getServlet().getServletContext().getRealPath("/");

log.info(">>>>>>>>>>>>>>>path:" path);

if (form == null) { 字串6

return mapping.findForward("success");