Activiti结合Modeler 可视化操作界面
2024-06-01 18:39:35
为了更好的方便定义部署流程，需要把activiti功能放置在页面中。其中流程的设定是特殊麻烦的。需要集成其他工具进行使用
依赖：
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd"><modelVersion>4.0.0</modelVersion><parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>2.4.5</version><relativePath/> <!-- lookup parent from repository --></parent><groupId>com.jt</groupId><artifactId>ttestA</artifactId><version>0.0.1-SNAPSHOT</version><packaging>jar</packaging><description>Demo project for Spring Boot</description><properties><java.version>1.8</java.version></properties><dependencies><dependency><groupId>org.apache.xmlgraphics</groupId><artifactId>batik-transcoder</artifactId><version>1.7</version></dependency><dependency><groupId>org.apache.xmlgraphics</groupId><artifactId>batik-codec</artifactId><version>1.7</version></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-data-jdbc</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-jdbc</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web-services</artifactId></dependency><!-- springSecurity 依赖 --><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-security</artifactId></dependency><!-- mysql --><dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId><scope>runtime</scope></dependency><!--引入activiti的springboot启动器 --><dependency><groupId>org.activiti</groupId><artifactId>activiti-spring-boot-starter</artifactId><version>7.1.0.M6</version><!-- <exclusions>--><!-- <exclusion>--><!-- <artifactId>mybatis</artifactId>--><!-- <groupId>org.mybatis</groupId>--><!-- </exclusion>--><!-- </exclusions>--></dependency><dependency><groupId>org.activiti</groupId><artifactId>activiti-diagram-rest</artifactId><!-- exclusions:activiti-diagram-rest中含有security的jar包，导致访问springbott需要登录，此处剔除登录--><exclusions><exclusion><artifactId>spring-security-config</artifactId><groupId>org.springframework.security</groupId></exclusion><exclusion><artifactId>spring-security-core</artifactId><groupId>org.springframework.security</groupId></exclusion><exclusion><artifactId>spring-security-crypto</artifactId><groupId>org.springframework.security</groupId></exclusion><exclusion><artifactId>spring-security-web</artifactId><groupId>org.springframework.security</groupId></exclusion></exclusions><version>5.22.0</version></dependency><dependency><groupId>org.activiti</groupId><artifactId>activiti-json-converter</artifactId><version>6.0.0</version></dependency><dependency><groupId>org.activiti</groupId><artifactId>activiti-modeler</artifactId><version>5.22.0</version></dependency><dependency><groupId>org.projectlombok</groupId><artifactId>lombok</artifactId><version>1.18.20</version><scope>provided</scope></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-tomcat</artifactId><scope>provided</scope></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId><scope>test</scope></dependency></dependencies><build><plugins><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId></plugin></plugins></build></project>
application.yml配置：
server:port: 8091# Spring配置
spring:# activiti配置activiti:#自动更新数据库结构#1.flase：默认值。activiti在启动时，对比数据库表中保存的版本，如果没有表或者版本不匹配，将抛出异常#2.true： activiti会对数据库中所有表进行更新操作。如果表不存在，则自动创建#3.create_drop： 在activiti启动时创建表，在关闭时删除表（必须手动关闭引擎，才能删除表）#4.drop-create： 在activiti启动时删除原来的旧表，然后在创建新表（不需要手动关闭引擎）database-schema-update: true#activiti7默认不生成历史信息表，开启历史表db-history-used: true#记录历史等级 可配置的历史级别有none, activity, audit, full#none：不保存任何的历史数据，因此，在流程执行过程中，这是最高效的。#activity：级别高于none，保存流程实例与流程行为，其他数据不保存。#audit：除activity级别会保存的数据外，还会保存全部的流程任务及其属性。audit为history的默认值。#full：保存历史数据的最高级别，除了会保存audit级别的数据外，还会保存其他全部流程相关的细节数据，包括一些流程参数等。history-level: full# =============================#自动检查、部署流程定义文件check-process-definitions: false# asyncExecutorActivate是指activiti在流程引擎启动就激活AsyncExecutor,异步：true-开启（默认）、false-关闭
# async-executor-activate: true#流程定义文件存放目录,要具体到某个目录# process-definition-location-prefix: classpath:/processes/holliday/#process-definition-location-suffixes: #流程文件格式# - **.bpmn20.xml# - **.bpmnapplication:name: weixinZFdatasource:#高版本驱动使用driver-class-name: com.mysql.cj.jdbc.Driverurl: jdbc:mysql://127.0.0.1:3306/activiti?serverTimezone=GMT%2B8&useUnicode=true&characterEncoding=utf8&nullCatalogMeansCurrent=true&autoReconnect=true&allowMultiQueries=true#设定用户名和密码username: rootpassword: rootjackson:date-format: yyyy-MM-dd HH:mm:sstime-zone: GMT+8#SpringBoot整合Mybatis
mybatis-plus:#指定别名包type-aliases-package: com.jt.pojo#扫描指定路径下的映射文件mapper-locations: classpath:/mapper/*.xml#开启驼峰映射configuration:log-impl: org.apache.ibatis.logging.stdout.StdOutImpl #sql日志map-underscore-to-camel-case: true# 一二级缓存默认开始 所以可以简化
#打印mysql日志
logging:level:com.jt.mapper: debug链接: https://pan.baidu.com/s/1TD2Ie84TyREoNkioj54F4g
提取码: qwer
从上方链接，或者自己去官网网站下载源码
将文件粘贴到controller层
ModelEditorJsonRestResource
打开在线编辑器时加载指定模型到页面
import org.activiti.editor.constants.ModelDataJsonConstants;
import org.activiti.engine.ActivitiException;
import org.activiti.engine.RepositoryService;
import org.activiti.engine.repository.Model;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.node.ObjectNode;@RestController
public class ModelEditorJsonRestResource implements ModelDataJsonConstants {protected static final Logger LOGGER = LoggerFactory.getLogger(ModelEditorJsonRestResource.class);@Autowiredprivate RepositoryService repositoryService;@Autowiredprivate ObjectMapper objectMapper;@RequestMapping(value="/model/{modelId}/json", method = RequestMethod.GET, produces = "application/json")public ObjectNode getEditorJson(@PathVariable String modelId) {ObjectNode modelNode = null;Model model = repositoryService.getModel(modelId);if (model != null) {try {if (StringUtils.isNotEmpty(model.getMetaInfo())) {modelNode = (ObjectNode) objectMapper.readTree(model.getMetaInfo());} else {modelNode = objectMapper.createObjectNode();modelNode.put(MODEL_NAME, model.getName());}modelNode.put(MODEL_ID, model.getId());ObjectNode editorJsonNode = (ObjectNode) objectMapper.readTree(new String(repositoryService.getModelEditorSource(model.getId()), "utf-8"));modelNode.put("model", editorJsonNode);} catch (Exception e) {LOGGER.error("Error creating model JSON", e);throw new ActivitiException("Error creating model JSON", e);}}return modelNode;}
}
ModelSaveRestResource
保存流程图编辑器的信息
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.InputStream;import org.activiti.editor.constants.ModelDataJsonConstants;
import org.activiti.engine.ActivitiException;
import org.activiti.engine.RepositoryService;
import org.activiti.engine.repository.Model;
import org.apache.batik.transcoder.TranscoderInput;
import org.apache.batik.transcoder.TranscoderOutput;
import org.apache.batik.transcoder.image.PNGTranscoder;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpStatus;
import org.springframework.util.MultiValueMap;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseStatus;
import org.springframework.web.bind.annotation.RestController;import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.node.ObjectNode;@RestController
public class ModelSaveRestResource implements ModelDataJsonConstants {protected static final Logger LOGGER = LoggerFactory.getLogger(ModelSaveRestResource.class);@Autowiredprivate RepositoryService repositoryService;@Autowiredprivate ObjectMapper objectMapper;/*** 保存流程图编辑器的信息* @param modelId* @param name* @param description* @param json_xml* @param svg_xml*/@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(ModelDataJsonConstants.MODEL_NAME, name);modelJson.put(ModelDataJsonConstants.MODEL_DESCRIPTION, description);model.setMetaInfo(modelJson.toString());model.setName(name);model.setDeploymentId(null);Integer version = model.getVersion();version++;model.setVersion(version);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);}}
}
StencilsetRestResource
获取流程图编辑器的汉化文件
import org.activiti.engine.ActivitiException;
import org.apache.commons.io.IOUtils;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestController;@RestController
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("stencilset.json");try {return IOUtils.toString(stencilsetStream, "utf-8");} catch (Exception e) {throw new ActivitiException("Error while loading stencil set", e);}}
}
将官方网站的这几个文件cv到resources中
修改app-cfg.js的配置
ACTIVITI.CONFIG = {// 'contextRoot' : '/activiti-explorer/service','contextRoot' : '',
};配置WebSecurityConfig配置
因为包含security会让你填写账号密码，添加此配置跳过，不添加会让你输入账号密码，而且最后保存还会403
WebSecurityConfig
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.stereotype.Component;@Component
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {@Overridepublic void configure(HttpSecurity httpSecurity) throws Exception {httpSecurity.csrf().disable();}
}
新建model
ModelTest 通过此路径跳转到页面
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.node.ObjectNode;
import org.activiti.editor.constants.ModelDataJsonConstants;
import org.activiti.engine.ProcessEngine;
import org.activiti.engine.ProcessEngines;
import org.activiti.engine.RepositoryService;
import org.activiti.engine.repository.Model;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;@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http://localhost:8091/model/create
以上完成即可在可视化页面进行添加！
对模型操作的接口：
package com.jt.controller;import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.node.ObjectNode;
import lombok.extern.slf4j.Slf4j;
import org.activiti.bpmn.converter.BpmnXMLConverter;
import org.activiti.bpmn.model.BpmnModel;
import org.activiti.editor.constants.ModelDataJsonConstants;
import org.activiti.editor.language.json.converter.BpmnJsonConverter;
import org.activiti.engine.ProcessEngine;
import org.activiti.engine.ProcessEngines;
import org.activiti.engine.RepositoryService;
import org.activiti.engine.repository.Deployment;
import org.activiti.engine.repository.Model;
import org.apache.commons.io.IOUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.ByteArrayInputStream;
import java.io.OutputStream;
import java.net.URLEncoder;@RestController
@Slf4j
public class ssss {@Autowiredprivate RepositoryService repositoryService;/*** 导出指定模型xml 文件* @param modelId 模型的id* @param response*/@GetMapping(value = "export")public void export(@PathVariable String modelId, HttpServletResponse response) {try {Model modelData = repositoryService.getModel(modelId);BpmnJsonConverter jsonConverter = new BpmnJsonConverter();JsonNode editorNode = new ObjectMapper().readTree(repositoryService.getModelEditorSource(modelData.getId()));BpmnModel bpmnModel = jsonConverter.convertToBpmnModel(editorNode);BpmnXMLConverter xmlConverter = new BpmnXMLConverter();byte[] bpmnBytes = xmlConverter.convertToXML(bpmnModel);ByteArrayInputStream in = new ByteArrayInputStream(bpmnBytes);OutputStream outputStream = response.getOutputStream();IOUtils.copy(in, outputStream);String filename = bpmnModel.getMainProcess().getId() + ".bpmn.xml";response.setHeader("content-type", "application/octet-stream");response.setContentType("application/octet-stream;charset=UTF-8");response.setHeader("Content-Disposition", "attachment;filename=" + URLEncoder.encode(filename, "utf-8"));outputStream.flush();outputStream.close();} catch (Exception e) {log.error("导出model的xml文件失败：{}", e.getMessage(), e);}}/*** 根据Model部署流程*/@PostMapping(value = "deploy/{modelId}")public R<String> deploy(@PathVariable("modelId") String modelId) {try {// 获取模型Model model = repositoryService.getModel(modelId);ObjectNode objectNode = (ObjectNode) new ObjectMapper().readTree(repositoryService.getModelEditorSource(model.getId()));BpmnModel bpmnModel = new BpmnJsonConverter().convertToBpmnModel(objectNode);String processName = model.getName()+".bpmn20.xml";byte[] bytes = new BpmnXMLConverter().convertToXML(bpmnModel);// 部署流程Deployment deployment = repositoryService.createDeployment().name(model.getName()).addString(processName, new String(bytes,"UTF-8")).deploy();System.out.println("流程部署id----"+deployment.getId());return R.OK(deployment.getId());} catch (Exception e) {log.error("根据模型部署流程失败：modelId={}", modelId, e);return R.ERROR();}}/*** 模型删除* @param request*/@GetMapping("/delete")public Resp<String> delete(HttpServletRequest request){String processId = request.getParameter("processId");System.out.println("processId is:" + processId);
// if(StringUtils.isNotEmpty(processId)){
// return Resp.ERROR(CodeMsgEnum.ERROR);
// }Model model = repositoryService.getModel(processId);if(model!=null){System.out.println("指定模型存在");repositoryService.deleteModel(processId);}return Resp.OK_WITHOUT_DATA();}/*** 新增模型* @param request* @param response*/@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){}}}
以上即是activiti链接可视化的操作。如需其他详细的操作，比如项目应用，参考以下文章：
Activiti7工作流引擎_Mr_Jin.的博客-CSDN博客
看完点个赞是对博主的支持哦~
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