Liferay7 BPM门户开发之45: 集成Activiti文件上传部署流程BPMN模型

开发文件上传，部署流程模板。

首先，开发jsp页面，deploy.jsp

<%@ include file="/init.jsp" %>

<h3>${RETURN_MESSAGE}</h3>

<h2><liferay-ui:message key="Deploy"/></h2>

<portlet:actionURL var="uploadURL" name="deployUploadAction">

                <portlet:param name="mvcRenderCommandName" value="/deployUploadAction" />

</portlet:actionURL>

<form action="${uploadURL }" method="post" enctype="multipart/form-data" style="margin-top:1em;">

            <input type="file" name="file" /><br>

            <input type="submit" value="Upload Model" class="btn" />

</form>

<hr class="soften" />

其中，上传form的action为portlet:actionURL，它的name就是在portlet类中的方法名，即deployUploadAction

接下来开发action代码

对应的上传处理代码段deployUploadAction：

public void deployUploadAction(ActionRequest actionRequest, ActionResponse actionResponse) throws Exception{

        UploadPortletRequest upr = PortalUtil.getUploadPortletRequest(actionRequest);

        String fileFieldName = "file";

        if (upr.getSize(fileFieldName) == 0)

        {

            throw new Exception("空文件!");

        }

        String fileName = upr.getFileName(fileFieldName);

        try {

            // 得到输入流（字节流）对象

            InputStream fileInputStream = upr.getFileAsStream(fileFieldName);//file.getInputStream();

            // 文件的扩展名

            String extension = FilenameUtils.getExtension(fileName);

            // zip或者bar类型的文件用ZipInputStream方式部署

            DeploymentBuilder deployment = repositoryService.createDeployment();

            if (extension.equals("zip") || extension.equals("bar")) {

                ZipInputStream zip = new ZipInputStream(fileInputStream);

                deployment.addZipInputStream(zip);

            } else if (extension.equals("xml")){

                // xml类型的文件

                deployment.addInputStream(fileName, fileInputStream);

            }

            deployment.deploy();

            _log.info(fileName +" deploy success!");

        } catch (Exception e) {

            _log.error(fileName + " error on deploy process, because of file input stream");

        }

        String message = "BPMN file upload success!";

        actionRequest.setAttribute("RETURN_MESSAGE", message);

    }