Activiti集成Activiti Modeler

article/2025/11/9 16:45:23

Activiti6.0.0及以上版本与activiti-modeler的maven引用有冲突，解决方法参考
Activiti6.0.0及以上版本集成Activiti Modeler

1.下载源文件

activiti-5.22.0官方Demo

activiti5.22.0源码

2.copy源文件

（一）复制前端文件

解压activiti-5.22.0官方Demo

解压activiti-explorer.war

复制editor-app,diagram-viewer文件夹，以及modele.html到本地项目

（2）复制服务端文件

解压activiti5.22.0源码

复制ModelEditorJsonRestResource.java,ModelSaveRestResource.java,StencilsetRestResource.java到控制层文件夹下

3.添加maven引用

<dependency><groupId>org.activiti</groupId><artifactId>activiti-modeler</artifactId><version>5.22.0</version>
</dependency>

4.启动项目,访问modeler页面

http://localhost:8080/modeler.html

这里写图片描述

修改启动类，屏蔽登录功能

@SpringBootApplication
@EnableAutoConfiguration(exclude = {org.springframework.boot.autoconfigure.security.SecurityAutoConfiguration.class,org.activiti.spring.boot.SecurityAutoConfiguration.class,
})
public class DemoApplication {public static void main(String[] args) {SpringApplication.run(DemoApplication.class, args);}
}

再次访问modeler页面

这里写图片描述

处理 /activiti-explorer/service/model//json 请求的报错

该请求的控制类为ModelEditorJsonRestResource.java

@RequestMapping(value="/model/{modelId}/json", method = RequestMethod.GET, produces = "application/json")

在/public/editor-app/app-cfg.js文件中修改请求的地址

ACTIVITI.CONFIG = {//'contextRoot' : '/activiti-explorer/service','contextRoot' : '',
};

再次访问modeler页面

报错GET http://localhost:8080/model//json 404 ()
这是因为我们没有已经建好的model模型，无法查看

5.新建model

测试类

@Controller
@RequestMapping("model")
public class ModelTest {@RequestMapping("create")public void createModel(HttpServletRequest request, HttpServletResponse response){try{String modelName = "modelName";String modelKey = "modelKey";String description = "description";ProcessEngine processEngine = ProcessEngines.getDefaultProcessEngine();RepositoryService repositoryService = processEngine.getRepositoryService();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 = repositoryService.newModel();ObjectNode modelObjectNode = objectMapper.createObjectNode();modelObjectNode.put(ModelDataJsonConstants.MODEL_NAME, modelName);modelObjectNode.put(ModelDataJsonConstants.MODEL_REVISION, 1);modelObjectNode.put(ModelDataJsonConstants.MODEL_DESCRIPTION, description);modelData.setMetaInfo(modelObjectNode.toString());modelData.setName(modelName);modelData.setKey(modelKey);//保存模型repositoryService.saveModel(modelData);repositoryService.addModelEditorSource(modelData.getId(), editorNode.toString().getBytes("utf-8"));response.sendRedirect(request.getContextPath() + "/modeler.html?modelId=" + modelData.getId());}catch (Exception e){}}}

访问localhost:8080/model/create

这里写图片描述

处理http://localhost:8080/editor/stencilset?version=1523329753442请求的报错

在StencilsetRestResource.java中，我们项目中少了stencilset.json

@RestController
public class StencilsetRestResource {@RequestMapping(value="/editor/stencilset", method = RequestMethod.GET, produces = "application/json;charset=utf-8")public @ResponseBody String getStencilset() {//stencilset.json为Model中的工具栏的名称字符，这里在resources下面查找InputStream stencilsetStream = this.getClass().getClassLoader().getResourceAsStream("stencilset.json");try {return IOUtils.toString(stencilsetStream, "utf-8");} catch (Exception e) {throw new ActivitiException("Error while loading stencil set", e);}}
}

下载stencilset.json，并放置在resources目录下
再次访问localhost:8080/model/create

6.保存Model

这里写图片描述

处理http://localhost:8080/model/102503/save的报错

修改ModelSaveRestResource.java为

@RestController
public class ModelSaveRestResource implements ModelDataJsonConstants {protected static final Logger LOGGER = LoggerFactory.getLogger(ModelSaveRestResource.class);@Autowiredprivate RepositoryService repositoryService;@Autowiredprivate ObjectMapper objectMapper;@RequestMapping(value="/model/{modelId}/save", method = RequestMethod.PUT)@ResponseStatus(value = HttpStatus.OK)public void saveModel(@PathVariable String modelId, String name, String description, String json_xml, String svg_xml) {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);}}
}