springboot项目集成activiti-modeler工作流，页面设计器部署到项目中

本文主要是介绍springboot项目集成activiti-modeler工作流，页面设计器部署到项目中，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

接着上篇文章idea插件画流程图，这种方法在项目中会使用但是用起来感觉不方便，需要将吧bpmn、png文件保存在一个固定的路径下，部署此文件。

而本篇文章不需要，只需要在项目页面中画好流程，直接部署流程。具体操作需要用到

activiti源码，改动部分代码即可。这里是5.22.0版本，下载好的在下方链接直接下载就好。

https://pan.baidu.com/s/1MU_uALvU_nB1piNq3ihrJA?pwd=bovw

1、将Activiti-activiti-5.22.0\modules\activiti-webapp-explorer2\src\main\webapp下的三个文件放到resources的static中

2、将Activiti-activiti-5.22.0\modules\activiti-webapp-explorer2\src\main\resources的json文件放到resources的static中

3、Activiti-activiti-5.22.0\modules\activiti-modeler\src\main\java\org\activiti\rest\editor这两个文件夹下的java文件放到com.atxinxin.activiti下

整体目录结构（包名自己定义就好）

完成以上步骤，需要修改ModelEditorJsoRestResource.java、ModelSaveResource.java、StencilsetRestResource.java

添加@RequestMapping("/activiti-explorer/service")

例：

修改 StencilsetRestResource.java文件

@RestController
@RequestMapping("/activiti-explorer/service")
public class StencilsetRestResource {@RequestMapping(value="/editor/stencilset", method = RequestMethod.GET, produces = "application/json;charset=utf-8")public @ResponseBody String getStencilset() {InputStream stencilsetStream = this.getClass().getClassLoader().getResourceAsStream("static/stencilset.json");try {return IOUtils.toString(stencilsetStream, "utf-8");} catch (Exception e) {throw new ActivitiException("Error while loading stencil set", e);}}
}

在此所有文件修改完成。

接下来配置端口、数据源、等等

--- 先来activiti的数据源配置文件

/*** @author weixinxin* @Description actityti数据源配置* @Date 11:22 2023/07/06*/
@Configuration
public class ActitytiDataSourceConfig extends AbstractProcessEngineAutoConfiguration {@Bean(name = "activitiDataSource")@ConfigurationProperties(prefix = "spring.datasource")public DataSource activitiDataSource(){System.out.println("-------------------------");return new DruidDataSource();}@Beanpublic PlatformTransactionManager transactionManager() {return new DataSourceTransactionManager(activitiDataSource());}@Beanpublic SpringProcessEngineConfiguration springProcessEngineConfiguration() {SpringProcessEngineConfiguration configuration = new SpringProcessEngineConfiguration();configuration.setDataSource(activitiDataSource());configuration.setDatabaseSchemaUpdate(ProcessEngineConfiguration.DB_SCHEMA_UPDATE_TRUE);configuration.setJobExecutorActivate(true);configuration.setTransactionManager(transactionManager());return configuration;}}

--- application-dev.properties配置文件

server.port=9999
spring.datasource.validationQuery=select 1 from dual
spring.datasource.driverClassName = com.mysql.cj.jdbc.Driver
spring.datasource.url = jdbc:mysql://localhost:3306/activiti?useUnicode=true&characterEncoding=utf-8&useSSL=false&&allowPublicKeyRetrieval=true&serverTimezone=Asia/Shanghai
spring.datasource.password = 123456
spring.datasource.username= root# &nullCatalogMeansCurrent=true?????mybatis.mapper-locations=classpath:com/atxinxin/mapper/*.xml  #mybatis??
spring.activiti.check-process-definitions = false
#spring.activiti.database-schema-update=false
logging.file.name=log.log
logging.pattern.level=debugsecurity.basic.enabled=false

--- 启动类

/*** @author weixinxin* @Description 启动类* @Date 11:26 2023/07/06*/
@Slf4j
@SpringBootApplication(exclude = {org.springframework.boot.autoconfigure.security.servlet.SecurityAutoConfiguration.class, org.activiti.spring.boot.SecurityAutoConfiguration.class})
public class ActivitiDemlApplication {public static void main(String[] args) {SpringApplication.run(ActivitiDemlApplication.class, args);log.info("---- 启动成功 !! ----------");}}

以上就是所有的准备工作

接下来需要写测试类进行测试。

1、先创建模型，跳转到流程编辑页面

2、部署流程

3、启动流程

4、提交任务（完成任务）


/*** @author weixinxin_ext 2023-07-06**/
@Controller
@Slf4j
@RequestMapping("/activiti-explorer/service")
public class MyActivitiController {@Resourceprivate RepositoryService repositoryService;/*** @Description 创建模型* @author weixinxin* @Date 18:12 2023/6/30**/@RequestMapping(value = "/create")public void create(HttpServletRequest request, HttpServletResponse response) throws IOException {String id = "";String name = "出差申请-Travel approval process";String description = "出差申请-Travel approval process";String key = "travel_approval_process";ObjectMapper objectMapper = new ObjectMapper();ObjectNode editorNode = objectMapper.createObjectNode();editorNode.put("id", "canvas");editorNode.put("resourceId", "canvas");ObjectNode stencilSetNode = objectMapper.createObjectNode();stencilSetNode.put("namespace", "http://b3mn.org/stencilset/bpmn2.0#");editorNode.put("stencilset", stencilSetNode);Model modelData = this.repositoryService.newModel();ObjectNode modelObjectNode = objectMapper.createObjectNode();modelObjectNode.put("name", name);modelObjectNode.put("revision", 1);description = StringUtils.defaultString(description);modelObjectNode.put("description", description);modelData.setMetaInfo(modelObjectNode.toString());modelData.setName(name);modelData.setKey(StringUtils.defaultString(key));this.repositoryService.saveModel(modelData);this.repositoryService.addModelEditorSource(modelData.getId(), editorNode.toString().getBytes("utf-8"));id = modelData.getId();//一定要输出id，部署需要，刚接触activiti不知道这个id在哪里System.out.println("id ========= " + id);response.sendRedirect("/modeler.html?modelId=" + id);}/*** @param id * @Description 发布模型为流程定义* @Date 14:04 2023/07/06* @author weixinxin*/@RequestMapping("/deploy/{id}")@ResponseBodypublic void deploy(@PathVariable("id") String id) throws Exception {Model modelData = repositoryService.getModel(id);byte[] bytes = repositoryService.getModelEditorSource(modelData.getId());JsonNode modelNode = new ObjectMapper().readTree(bytes);BpmnModel model = new BpmnJsonConverter().convertToBpmnModel(modelNode);if (model.getProcesses().size() == 0) {log.error("数据模型不符要求，请至少设计一条主线流程。");}byte[] bpmnBytes = new BpmnXMLConverter().convertToXML(model);String processName = modelData.getName() + ".bpmn20.xml";repositoryService.createDeployment().name(modelData.getName()).addString(processName, new String(bpmnBytes, "UTF-8")).deploy();}/*** @param keyName * @Description 启动流程* @Date 14:03 2023/07/06* @author weixinxin*/@RequestMapping("/start/{key}")@ResponseBodypublic Object startProcess(@PathVariable("key") String keyName) {ProcessInstance process = processEngine.getRuntimeService().startProcessInstanceByKey(keyName);return process.getId() + " : " + process.getProcessDefinitionId();}/*** @param processInstanceId 流程实例id* @Description 提交任务* @Date 14:03 2023/07/06* @author weixinxin*/@RequestMapping("/run/{processInstanceId}")@ResponseBodypublic Object run(@PathVariable("processInstanceId") String processInstanceId) {Task task = processEngine.getTaskService().createTaskQuery().processInstanceId(processInstanceId).singleResult();System.out.println("task {} find " + task.getId());processEngine.getTaskService().complete(task.getId());return "SUCCESS";}
}

创建模型，流程编辑页面

以上完成测试类编写，开始测试

1、创建模型，跳转流程设计页面

http://localhost:9999/activiti-explorer/service/create

2、部署流程（id换成自己的）

http://localhost:9999/activiti-explorer/service/deploy/id

3、启动流程（key换成自己的）

http://localhost:9999/activiti-explorer/service/start/key

4、完成任务（流程实例id换成自己的）
http://localhost:9999/activiti-explorer/service/run/processInstanceId

1、当创建模型，跳转流程设计页面时，创建完成流程图点击保存会发现返回的状态码为400

http://localhost:9999/activiti-explorer/service/create

在看一下返回的信息

在ModelSaveResource.java中

后端接受参数,可以看到需要（MultiValueMap<String,String> values）

@RequestMapping(value = "/model/{modelId}/save", method = RequestMethod.PUT)@ResponseStatus(value = HttpStatus.OK)public void saveModel(@PathVariable String modelId, @RequestBody MultiValueMap<String, String> values)

前端传参（删除了许多，为了方便看需要哪些参数）可以看到（是 json_xml，svg_xml，name，descriotin）

json_xml: {"resourceId":"5007","properties":{}
svg_xml: <svg xmlns="http://www.w3.org/2000/svg" </svg>
name: 请假申请-Leave approval process
description: 请假申请-Leave approval process

这就需要我们来修改ModelSaveResource.java中的saveModel方法

/*** @Description 保存模型* @Date 15:52 2023/07/07* @author weixinxin*/
@RequestMapping(value = "/model/{modelId}/save", method = RequestMethod.PUT)@ResponseStatus(value = HttpStatus.OK)public void saveModel(@PathVariable String modelId,@RequestParam("json_xml") String json_xml,@RequestParam("svg_xml") String svg_xml,@RequestParam("name") String name,@RequestParam("description") String description) {try {Model model = repositoryService.getModel(modelId);ObjectNode modelJson = (ObjectNode) objectMapper.readTree(model.getMetaInfo());modelJson.put(MODEL_NAME, name);modelJson.put(MODEL_DESCRIPTION, description);model.setMetaInfo(modelJson.toString());model.setName(name);repositoryService.saveModel(model);repositoryService.addModelEditorSource(model.getId(), json_xml.getBytes("utf-8"));InputStream svgStream = new ByteArrayInputStream(svg_xml.getBytes("utf-8"));TranscoderInput input = new TranscoderInput(svgStream);PNGTranscoder transcoder = new PNGTranscoder();// Setup outputByteArrayOutputStream outStream = new ByteArrayOutputStream();TranscoderOutput output = new TranscoderOutput(outStream);// Do the transformationtranscoder.transcode(input, output);final byte[] result = outStream.toByteArray();repositoryService.addModelEditorSourceExtra(model.getId(), result);outStream.close();} catch (Exception e) {LOGGER.error("Error saving model", e);throw new ActivitiException("Error saving model", e);}}

按理说这是activiti的源码，传参和接受参数应该一样，但是为什么不一样需要找到前端的方法看一下，目前因为时间问题，没时间看，到时候有时间，找到原因我在补充吧！

看了一下原因，如果不想修改后端接受收参数，那就修改一下请求方式，

后端：put 修改为 post
@RequestMapping(value = "/model/{modelId}/save", method = RequestMethod.POST)
前端：static/editor-app/configuration/toolbar-default-actions.js文件中
$scope.save = function (successCallback)
这个方法的请求方式修改为post
$http({    method: 'POST',data: params,ignoreErrors: true,headers: {'Accept': 'application/json','Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8'},transformRequest: function (obj) {var str = [];for (var p in obj) {str.push(encodeURIComponent(p) + "=" + encodeURIComponent(obj[p]));}return str.join("&");},url: KISBPM.URL.putModel(modelMetaData.modelId)})
这样就不需要修改接收参数就可以保存流程模型了