流程定义和部署管理——部署

一、process-list.jsp页面中有部署的入口

		
提示：点击xml或者png链接可以查看具体内容！
		部署流程
		重新部署流程
	
	

		
部署新流程
		
支持文件格式：zip、bar、bpmn、bpmn20.xml
		

			
			
		
	

其中主要是两个：

/workflow/deploy，部署新流程；

/workflow/redeploy/all，重新部署所有流程；

二、部署新流程

上传zip、bar、bpmn、bpmn20.xml，然后部署新流程，部署完之后返回process-list页面。

ActivitiController中有

@RequestMapping(value = "/deploy")
    public String deploy(@Value("#{APP_PROPERTIES['export.diagram.path']}") String exportDir, @RequestParam(value = "file", required = false) MultipartFile file) {

        String fileName = file.getOriginalFilename();

        try {
            InputStream fileInputStream = file.getInputStream();
            Deployment deployment = null;

            String extension = FilenameUtils.getExtension(fileName);
            if (extension.equals("zip") || extension.equals("bar")) {
                ZipInputStream zip = new ZipInputStream(fileInputStream);
                deployment = repositoryService.createDeployment().addZipInputStream(zip).deploy();
            } else {
                deployment = repositoryService.createDeployment().addInputStream(fileName, fileInputStream).deploy();
            }

            List list = repositoryService.createProcessDefinitionQuery().deploymentId(deployment.getId()).list();

            for (ProcessDefinition processDefinition : list) {
                WorkflowUtils.exportDiagramToFile(repositoryService, processDefinition, exportDir);
            }

        } catch (Exception e) {
            logger.error("error on deploy process, because of file input stream", e);
        }

        return "redirect:/workflow/process-list";
    }

要点：

1、根据上传文件后缀调用不同的部署方法：

zip和bar调用

repositoryService.createDeployment().addZipInputStream(zip).deploy();

bpmn和bpmn20.xml调用

repositoryService.createDeployment().addInputStream(fileName, fileInputStream).deploy();

deploy()方法都返回Deployment接口实例，这个接口提供方法如下：

public abstract interface Deployment
{
  public abstract String getId();
  
  public abstract String getName();
  
  public abstract Date getDeploymentTime();
  
  public abstract String getCategory();
  
  public abstract String getTenantId();
}

2、根据部署ID查流程定义，然后导出图片文件到硬盘，简化之后代码调用如下：

List list = repositoryService.createProcessDefinitionQuery().deploymentId(deployment.getId()).list();
 for (ProcessDefinition processDefinition : list) {
    InputStream resourceAsStream = repositoryService.getResourceAsStream(processDefinition.getDeploymentId(), diagramResourceName);
 }

三、部署全部流程

部署四个流程，读deployments目录下的四个bar包，然后调用deploy()方法部署流程，导出流程图片，简化后代码如下：

InputStream resourceAsStream = repositoryService.getResourceAsStream(processDefinition.getDeploymentId(), diagramResourceName);
ResourceLoader resourceLoader = new DefaultResourceLoader();
String[] processKeys = {"leave", "leave-dynamic-from", "leave-formkey", "dispatch"};
for (String loopProcessKey : processKeys) {
    String classpathResourceUrl = "classpath:/deployments/" + processKey + ".bar";
    Resource resource = resourceLoader.getResource(classpathResourceUrl);
        InputStream inputStream = resource.getInputStream();
        if (inputStream != null) {
            ZipInputStream zis = new ZipInputStream(inputStream);
            Deployment deployment = repositoryService.createDeployment().addZipInputStream(zis).deploy();

            // export diagram
            List list = repositoryService.createProcessDefinitionQuery().deploymentId(deployment.getId()).list();
            for (ProcessDefinition processDefinition : list) {
               InputStream resourceAsStream = repositoryService.getResourceAsStream(processDefinition.getDeploymentId(), diagramResourceName);
            } 
         }
}

下面用一个类图来说明流程定义列表和部署遇到的接口和类，主要是围绕着RepositoryService展开的：